356 results about "Square cylinder" patented technology

The invention discloses a combined iron core type three-phase reactor and a winding device thereof, and belongs to the technical field of reactor processing, the combined iron core type three-phase reactor comprises a winding assembly, one side of the winding assembly is sequentially provided with a height limiting assembly, a core loading assembly and a switching assembly, and the same sides of the winding assembly, the height limiting assembly, the core loading assembly and the switching assembly are jointly provided with a pay-off assembly; the winding assembly comprises a first sliding table, a first mounting plate is mounted at the sliding end of the first sliding table, a winding motor is mounted on the side, close to the height limiting assembly, of the upper end of the first mounting plate, a positioning circular plate is mounted at the end of a driving shaft of the winding motor, and a plurality of winding positioning rods used for being matched with different core sections are arranged on the positioning circular plate. According to the bobbin assembly device, the switching assembly is used for installing the end of an enameled wire on the winding assembly before a new coil square barrel is wound, automatic winding and installation of bobbin components are achieved, bobbin assembly can be conducted on similar special-shaped core bodies, and the overall working efficiency is improved.

The utility model relates to the technical field of double-sided plate grinding machines, in particular to an intelligent grinding device of a double-sided plate grinding machine, which comprises a bottom box, a U-shaped frame, a conveying roller and a grinding roller, a U-shaped frame is connected to the upper surface of the bottom box, conveying rollers are rotationally arranged on the inner walls of the bottom box and the U-shaped frame in a penetrating mode, and grinding rollers are rotationally connected to the positions, close to the conveying rollers, of the inner walls of the bottom box and the U-shaped frame. According to the intelligent grinding device of the double-face plate grinding machine, a workpiece is lifted through a lifting air cylinder, after the workpiece is centered, an edge grinding motor is started to drive an edge grinding roller to grind the edge of the workpiece back and forth, then the workpiece is reset and rotated by 90 degrees, the other two edges are ground, and then the intelligent grinding device of the double-face plate grinding machine grinds the edge; according to the intelligent grinding device of the double-face plate grinding machine, the cabinet door is opened, the sleeve is pushed, the grinding roller is pulled to be pulled down, the square column at the end of the grinding roller needing to be replaced is inserted into the inner square barrel, then the sleeve is loosened to fix the grinding roller, and then the grinding roller is rapidly replaced through the intelligent grinding device of the double-face plate grinding machine.

The utility model belongs to the technical field of waste gas treatment, and particularly relates to RTO multi-chamber heat storage oxidizing combustion treatment equipment which comprises a base, a plurality of heat storage chambers and a combustion chamber, the heat storage chambers and the combustion chamber are all fixedly installed on the upper side of the base, a plurality of square barrels are installed on the upper side of the base, and ventilation barrels communicated with one another are arranged among the square barrels. An air inlet barrel is fixedly arranged on the side wall of the square barrel located on the right side, two baffles are fixedly arranged on the lower side of each heat storage chamber, ventilation holes are formed in the baffles, cover plates are installed on the front sides and the rear sides of the interiors of the square barrels, and control assemblies matched with the cover plates are arranged on the front sides and the rear sides of the interiors of the square barrels. Waste gas is blown into the device through an air inlet barrel, under the control of an independent control assembly, the cover plates on the front side and the rear side slide independently, ventilation holes for air inlet and exhaust of a combustion chamber are continuously replaced, and therefore the six cover plates are alternately used, and meanwhile the multiple heat storage chambers are alternately used; therefore, the service lives of the cover plate and the regenerative chamber are prolonged.

The invention discloses a triceps brachii stretching exercise training device, and belongs to the technical field of sports equipment, the triceps brachii stretching exercise training device comprises a bottom cylinder, two sliding grooves formed in the upper surface of the bottom cylinder and a holding rod slidably connected with the inner walls of the two sliding grooves, and two reciprocating threads are formed in the outer surface of a straight rod rotationally connected with the inner wall of the bottom cylinder. According to the device, through body fluctuation, a pull rope drives a first piston plate to move up and down in a first square cylinder under the action of body fluctuation of a trainer, so that a nut drives two holding rods to get close to each other and then get away from each other, the distance between the two hands of the trainer is automatically adjusted in the training process, and the training difficulty of the device on triceps brachii muscles is increased; the protruding block is discontinuously in contact with the piston rod, so that the piston rod moves up and down on the inner wall of the piston cylinder, water in the water tank flows into the air bag, the mass of the air bag on the back of the trainee is continuously increased, then the weight training effect on the trainee is achieved, and the effect of the device on the triceps brachii muscle of the trainee is further improved.

The utility model discloses a mechanical movement telescopic unit of an LED display screen, and belongs to the technical field of LED display screen equipment. Comprising a C-shaped first aluminum alloy shell and a C-shaped second aluminum alloy shell, the first aluminum alloy shell and the second aluminum alloy shell are in mortise and tenon fit to form a square cylinder, a stepping motor is installed in the cylinder, and a center telescopic pipe used for installing an LED display screen is arranged in the cylinder in a sliding mode. The stepping motor is used for driving the central telescopic pipe to do circulating telescopic motion in the cylinder body; according to the utility model, the structure is simpler, the production and manufacturing cost is lower, all the parts are connected into a whole in a splicing manner, the disassembly and assembly are convenient, and the maintenance cost is low.

The present invention relates to the technical field of watertight doors, specifically a marine stable watertight hydraulic door, which includes a door panel and a door frame hinged to one end of the door panel. A square tube frame is fixed on one side of the door panel. After the door is closed, the square tube frame and the door frame are in sealing contact, and a plurality of bolt fixtures are connected between the door frame and the square tube frame. The bolt fixtures are arranged on the square tube frame and elastically snap into the grooves opened on the door frame. A bolt rack is in contact with the side of the door frame facing away from the square tube frame. The watertight door of the present invention has a normal mode, a watertight mode, and a fireproof mode. In the fireproof mode, the watertight door cannot be easily opened, and the crew cannot push the handle L bar without knowing the fire situation. In this way, the crew can know that there is a fire on the other side of the door and avoid the safety problem of the fire spreading outward after opening the door.

The present application belongs to the technical field of granulating device, and particularly relates to a carbon nanotube dry granulating device, which comprises a machine body, a feeding mechanism arranged at the upper port of the machine body, a cutting and guiding mechanism arranged between a rolling mechanism and a whole-grain mechanism, a guiding square cylinder fixedly connected below two supporting guide plates, a guiding cavity formed in the guiding square cylinder, wherein the upper port of the guiding cavity is located below the symmetrical rollers, a triangular distributing block is fixedly arranged in the lower port of the guiding square cylinder, a discharging cavity is formed between the two side slopes of the triangular distributing block and the side wall of the guiding cavity, at least two sliding grooves are formed in the left side wall of the guiding square cylinder and communicate with the guiding cavity, a sliding plate is slidingly arranged in each sliding groove, and a cutting knife is arranged on the right end surface of each sliding plate. The present application can improve the effect of the whole-grain mechanism on rolling and pressing the small pieces after cutting into granules, thereby improving the efficiency of processing and forming of the carbon nanotube in the dry granulating device.

This invention relates to a high-reliability ring main unit, comprising: an outer casing assembly, the outer casing assembly including an outer casing, a receiving cavity, a first communication channel, and a flow channel. The receiving cavity is formed on the inner side of the outer casing, and several first communication channels are recessed on one side of the inner side of the receiving cavity. Several flow channels are recessed on the inner bottom wall of the first communication channel, and the flow channels intersect with the horizontal plane. Through the use of a ventilation assembly and an exhaust assembly, outside air passes through a square cylinder, successively passing through a first sieve, a second absorbent cloth, and another second sieve, finally entering the receiving cavity. Dust in the air is blocked by the first sieve, and moisture in the air is removed by the second absorbent cloth, preventing moisture in the air from affecting the normal operation of the equipment inside the receiving cavity. Hot air in the receiving cavity is pushed out through the second exhaust channel, the first exhaust channel, and the intermediate cavity, thus cooling the equipment inside the receiving cavity.

The luggage with the external storage function comprises a luggage body, square cylinders are arranged on the outer wall of the luggage body and located on the two sides of the luggage body, square columns are arranged in the square cylinders in a sliding mode, one ends of the square columns are provided with connecting springs, and the other ends of the square columns are connected with the connecting springs. One end of each connecting spring is fixedly connected with the inner wall of the square cylinder, hanging holes are formed in the square columns, hanging rods are arranged in the hanging holes, storage boxes are arranged at the bottoms of the hanging rods, avoiding holes are formed in the two side faces of the square cylinder, and the hanging rods are located in the avoiding holes. A user can pull a pull ring to enable a hanging hole in a square column to be separated from a square cylinder, and at the moment, a hanging rod can be hung in the hanging hole, so that the storage box and the luggage box body are hung and placed, and the storage box and the luggage box body are convenient to take.

The utility model discloses a quick and uniform mortar stirring device for building construction, which relates to the field of building construction and comprises a tank body, a top cover is arranged at the top of the tank body, a stirring component is arranged at the bottom of the tank body, feeding pipes are connected to the left side and the right side of the top cover, two discharging pipes are connected to the bottom of the tank body, and electromagnetic valves are connected to the outer walls of the discharging pipes. A clamping groove is formed in the top of the tank body. Non-caked mortar raw materials are filtered through the filter sieve hopper, the caked mortar raw materials are located at the bottom of the filter sieve hopper, the electric telescopic rod is used for pulling the connecting plate, the connecting plate pulls the square rod, the square rod slides in the square cylinder, the square rod is used for pushing the grinding head, and the grinding head is driven by the motor to rotate. According to the mortar stirring device, the grinding head extends into the filter sieve hopper, the second motor is used for driving the grinding head to rotate, and the grinding head can be used for grinding and crushing caked mortar raw materials at the bottom of the filter sieve hopper, so that the mortar stirring efficiency and quality can be effectively improved.

The utility model relates to server base technical field discloses a spliced server base structure, including the placement board, the top fixedly connected with square cylinder no.

The utility model discloses a hydraulic turning plate car unloader driven by steering wheels to walk, which comprises a chassis, one end of the chassis is provided with a hinge seat, one end of the hinge seat is hinged with a turning platform, two sides of the turning platform are fixedly welded with fixing frames, one side of each fixing frame is hinged with a platform oil cylinder, and the other side of each fixing frame is hinged with a hydraulic cylinder. The platform oil cylinders are hinged to the two sides of the surface of one end of the chassis, square cylinders are fixedly connected to the two sides of the surface of one end of the overturning platform, square rods are slidably mounted in the square cylinders, limiting rods are fixedly connected to the front side surfaces of the square rods and the square cylinders, counter bores are formed in the square rods, and the counter bores are fixedly connected with the limiting rods. The automobile wheel limiting device is flexible and convenient to move, high in adaptability and particularly suitable for places with complex road conditions and high precision requirements, meanwhile, the limiting rods are connected through the square rods and the square barrels, automobile wheels can be limited and supported, and safety and stability during unloading are guaranteed.

The utility model discloses a numerical control lathe precision detection device, which relates to the technical field of numerical control lathes and comprises an operation table, a fixed seat is fixedly arranged at one end of the top of the operation table, a movable seat is slidably arranged at the other end of the top of the operation table, and a circular ring is rotatably arranged on one side, close to the movable seat, of the fixed seat. A square cylinder is fixedly connected to the inner circle of the circular ring, a sliding column is slidably arranged at the end, away from the circular ring, of the square cylinder, a square plate is slidably connected to the interior of the square cylinder, a pressure sensor is fixedly connected to the face, back to the sliding column, of the square plate, and the pressure sensor abuts against the inner wall of the square cylinder. According to the precision detection device for the numerical control lathe, by arranging the square cylinder, the sliding column, the pressure sensor and other structures, multiple times of center calibration detection can be carried out on a cylindrical blank piece, the machining precision is improved, the cylindrical blank piece does not need to be taken down from the lathe, calibration can be carried out in multiple times of machining, and the working efficiency of the numerical control lathe can be improved.

The utility model discloses a cutter tooth welding quality detection device for a diamond saw blade, which comprises an operation table, a U-shaped seat is arranged at the top of the operation table, a threaded rod is rotatably arranged on the U-shaped seat, a placing assembly is arranged on the threaded rod, an L-shaped plate is arranged on one side of the U-shaped seat, a hydraulic cylinder is arranged on the top wall of the L-shaped plate, an extrusion column is arranged at the bottom of the hydraulic cylinder, and a cutter tooth is arranged on the extrusion column. According to the utility model, the periphery of the saw blade teeth to be detected can be covered by the square cylinder, so that the cutter teeth falling off in the detection process are left in the square cylinder, and after one saw blade is detected, the square cylinder is rotated to an inclined state by the motor II, so that the cutter teeth in the square cylinder can slide into a collecting barrel in the collecting cabinet, and the cutter teeth are collected in the detection process; the trouble that fallen cutter teeth are accumulated on the operation table and need to be cleaned regularly is avoided, and the welding quality of the cutter teeth of the saw blade is easy and convenient to detect.

The utility model discloses a high-flow continuous and stable cementing powder adding system for tailing filling. A plurality of flow-aiding gas discs which are uniformly distributed in the circumferential direction are mounted on a conical cylinder of an ash bin. An annular air supply pipe which is arranged on the periphery of the conical cylinder in a surrounding mode and used for being externally connected with a high-pressure moisture removal air source is connected with the air inlet end of each flow-aiding air disc. And the lower port of the conical cylinder is connected with a star-shaped feeder through a hydraulic electric flashboard. A conveying auger and a metering auger located below the conveying auger are arranged below the star-shaped feeder. And the lower end of the star-shaped feeder is connected with a conveying auger through a discharging square cylinder with a flaring structure. And a rubber hose is connected between the blanking pipe of the conveying auger and the receiving pipe of the metering auger. The adding system further comprises a front end sensor and two rear end sensors. By means of the airflow blowing effect and the effects of the star-shaped feeder and the conveying screw, large-flow uniform and stable adding of the cementing powder for filling is achieved, the problem that the cementing powder is arched in the ash bin can be well solved, and smooth discharging of the cementing powder from the ash bin is achieved.

The invention relates to the technical field of automobile part processing equipment, discloses a small-head oil hole detection device for connecting rod production, and aims to solve the problem that a hole wall detection result of a small-head oil hole is affected due to the fact that a detection rod is affected by external impurities. Through the arrangement of the blocking mechanism, during use, the cylinder and the square cylinder are arranged on the two sides of the small-head oil hole, then the detection table extends into the small-head oil hole, the detection operation is completed by utilizing the axial contact between the detection rod on the detection table and the inner wall of the small-head oil hole, and in the process, the cylinder and the square cylinder are pressed on the two side faces of the small-head oil hole, so that the detection efficiency is improved. Through the actions, the amount of external impurities entering the small-head oil hole is reduced, so that the hole wall detection result of the small-head oil hole is not easily influenced.

The utility model discloses a bottle washing machine for veterinary drug production, which relates to the field of cleaning equipment and comprises a processing cavity, a bottle washing device and a bottle washing device. The number of the clamping pieces is multiple, and the multiple clamping pieces are arranged on the outer side of the square cylinder in the circumferential direction; each clamping piece comprises a placing rod and two clamping blocks, and the two clamping blocks are connected to the square cylinder in a sliding mode; the placing rod is located under the two clamping blocks and vertically moves on the square cylinder. The medicine bottle cleaning device solves the problem that an existing device cannot be suitable for cleaning medicine bottles of different sizes, the two clamping blocks slide on the square cylinder to be adjusted, the placing rod moves on the square cylinder to be adjusted in position so as to adapt to the medicine bottles of different sizes, and the application range of the device is widened.

The utility model relates to the technical field of helmet production, in particular to a paint spraying device for helmet production, which comprises a base plate, the left side of the top of the base plate is fixedly connected with an automatic detection mechanism, the automatic detection mechanism comprises a U-shaped frame, the top of the U-shaped frame is fixedly connected with a second electric push rod, and the top of the base plate is fixedly connected with a top frame. Through cooperation of the collecting box, the draught fan, the conveying pipe, the collecting square barrel and the mounting plate, the waste paint collecting function is achieved, firstly, the draught fan is started through the controller, and under the action of suction force of the draught fan, raised paint mist enters the collecting box from the collecting square barrel, passes through the conveying pipe and finally enters the collecting box to be adsorbed and blocked in the box by the adsorption filter plate; the mechanism can effectively collect and treat raised paint mist generated by paint spraying, so that the situation that the surrounding environment is polluted due to the fact that the paint mist drifts around can be prevented, and meanwhile the situation that the drifting paint mist hurts the respiratory system of a worker can be avoided.

The invention provides a vehicle framework structure. In the vehicle frame structure, a bracket couples a side member and a cross member. And the side components are aluminum square cylinder components. The transverse component is an iron square cylinder component. The bracket is provided with an abutting wall and a pair of clamping flanges. The abutting wall abuts against a tube end portion of a vehicle width direction end of the cross member. The pair of clamping flanges extends from the abutting wall to the outer side of the width direction of the vehicle and clamps the side surface member in the vertical direction.

The utility model discloses a monitoring device for building foundation settlement, which relates to the technical field of foundation settlement monitoring and comprises a bottom plate, an upright post fixedly connected to the upper side of the bottom plate, a limiting piece fixedly connected to the outside of the upright post, a rotating sleeve rotationally connected to the outside of the limiting piece, and a gear ring fixedly connected to the outside of the rotating sleeve. A rotating mechanism is installed outside the stand column, a plurality of sets of annularly-arranged fixing rods are fixedly connected to the outer portion of the rotating sleeve, a connecting cylinder is fixedly connected to the tail end of each fixing rod, a fixing square cylinder is fixedly connected to the tail end of each connecting cylinder, and a monitoring mechanism is installed on the inner side of each fixing square cylinder. According to the device, a sliding rod is automatically driven to make contact with a foundation through a balancing weight, settlement data are directly read through a graduated scale on a fixed square cylinder, the monitoring process is greatly simplified, convenience is improved, and meanwhile the settlement data can be accurately measured in the mode that the telescopic length of a connecting cylinder is adjusted and a motor drives a gear and a gear ring to rotate in a meshed mode. Different monitoring points can be flexibly covered, and omnibearing monitoring of foundation settlement is realized.

The application relates to the field of crane technology and discloses a large-scale steel structure hydraulic lifting device which comprises a hydraulic support, a slide rail connected to one end of the hydraulic support, a steel frame connected to the lower end of the slide rail, a circular frame installed at the lower end of the steel frame, a hook connected to the lower end of the circular frame, a supporting device installed in the steel frame, a detection device connected to the lower end of the supporting device, a second fixing device installed at the lower end of the detection device and a first fixing device installed at one end of the detection device. The first magnet plate and the second magnet plate are driven to slide downwards by the square cylinder, so that the first magnet plate and the second magnet plate can contact the steel structure, the steel structure is magnetically adsorbed, when the steel structure shakes, the first magnet plate and the second magnet plate are magnetically adsorbed and fixed on the steel structure, the first slide column is used as the support, and the shaking of the steel structure is reduced.

The utility model discloses a data center humidifying device which comprises a rectangular shell, an inserting groove is formed in the rectangular shell, the inner wall of the inserting groove is connected with a wet film entity in a sliding mode, a quick release mechanism is arranged on the front face of the rectangular shell, a spraying mechanism is arranged in the rectangular shell, and a strip-shaped spraying nozzle is installed on the face, close to the wet film entity, of a vertical plate. The end, away from the strip-shaped spraying nozzle, of the hose fixedly communicates with a connecting pipe. Through the arranged spraying mechanism, comprehensive and uniform water replenishing for a wet film entity is achieved, the problem that water replenishing of a wet film in a traditional humidifying device is not uniform is effectively solved, the humidifying effect and efficiency are improved, a motor drives a lead screw to rotate, a first sliding block is driven to move in a square cylinder, and the water replenishing efficiency is improved. Furthermore, the strip-shaped spraying nozzle can uniformly spray the wet film entity, so that each part of the wet film can be quickly and uniformly replenished with water.

The utility model discloses a junction box cover with a bunching function, which relates to the technical field of bunching of junction box covers, and comprises a box cover, the box cover is provided with a sliding groove, a sliding block and two first springs are arranged in the sliding groove, the sliding block is connected with a square seat, the square seat is provided with a limiting ring and a spring seat, the limiting ring is connected with a square cylinder, and the spring seat is connected with a spring. The square seat is connected with a fixing mechanism, the spring seat is connected with a second spring, the limiting ring is connected with a shifting rod, and the square seat is further provided with a limiting mechanism. By arranging the fixing mechanism, the deflector rod and the second spring, the wire bundling effect can be effectively improved, by arranging the limiting mechanism, a wire can penetrate through the fixing mechanism more conveniently, the wire bundling efficiency is improved, when the wire is pulled by external force, the protruding block drives the limiting ring and the deflector rod to stretch the second spring, and the wire bundling effect is improved. The elastic force of the second spring can reduce the impact force borne by the wire, part of the pulling force can be transmitted to the first spring, and the first spring buffers the pulling force borne by the wire.

The utility model relates to the technical field of vehicle-mounted microphone production, in particular to a plastic sheet placing and screening device. Comprising a machining table, a linear vibration feeder is fixedly installed on the upper surface of the machining table, a conveying frame is fixedly installed on the upper side of the linear vibration feeder, a screening mechanism is arranged at one end of the conveying frame and comprises a butt joint frame fixedly connected to one side of the conveying frame, and a through groove is formed in one side of the butt joint frame. In the process of conveying the plastic sheets through the butt joint frame and the conveying frame in a vibration mode, if the opposite-type optoelectronic switches detect that the directions of the plastic sheets are wrong, the blowing pipe blows the plastic sheets with the wrong directions into the square barrel through the through groove and the opening, and the plastic sheets in the square barrel are conveyed outwards in a vibration mode and fall into the collecting frame to be treated in a centralized mode conveniently. In this way, the plastic sheets with the correct delivery direction are screened out for sponge pad attaching work, plastic sheet defective products with the wrong sponge attaching positions are avoided, and the production quality of the plastic sheets is improved.

The invention discloses a water conservancy and hydropower engineering construction slope protection excavation device which comprises an excavator body, a supporting frame is arranged above the excavator body, the two sides of the supporting frame are symmetrically and rotationally connected with first threaded rods, the first threaded rods are in threaded connection with a transverse frame, and the side face of the transverse frame is fixedly connected with a square cylinder. A second threaded rod can be controlled to rotate, a supporting column is driven to extrude a sliding block, then gas in a square barrel is triggered to push a rack to slide, an electric push block is driven through a gear and belt transmission to push a scraping plate out of a cutting groove in the side face of a pressing plate, automatic scraping operation is conducted on the surface of the pressing plate, and scraped soil directly falls into a soil collecting box to be treated in a unified mode. The process does not need manual intervention, sticky soil on the pressing plate can be removed in real time, the working face, making contact with slope soil, of the pressing plate is always kept flat, and the problems that due to the fact that the pressing plate is uneven, pressing force is uneven, and soil falls are solved fundamentally.

The invention belongs to the technical field of pavement slab seam measurement, and particularly relates to a tool for concrete pavement slab seam measurement, which comprises a measurement square cylinder, two clamping blocks are movably connected to the lower surface of the measurement square cylinder, and two limiting grooves matched with the clamping blocks are formed in the lower surface of the measurement square cylinder. The opposite sides of the two clamping blocks are fixedly connected with measuring plates, and the opposite sides of the two measuring plates are provided with measuring holes. The concrete pavement slab joint measuring tool not only has the functions of automatic measurement and measured data correction, but also has the function of automatically cleaning the to-be-measured area of the slab joint, manual tedious operation is not needed, the measurement error is reduced, the convenience and efficiency of slab joint measurement are improved, the labor intensity of workers is reduced, and the working efficiency is improved. The accuracy of measured data is also improved, the specific condition of the concrete pavement slab seam can be more accurately judged, and the use reliability of the measuring tool is improved.

The invention discloses an assembly type mounting frame for building electromechanical equipment, and relates to the technical field of mounting frames, the assembly type mounting frame comprises two square cylinders and two supporting rods corresponding to the two square cylinders respectively, the cross sections of the two supporting rods are square, the square cylinders are slidably arranged on the corresponding supporting rods in a sleeving mode, and the square cylinders are arranged on the square cylinders in a sleeving mode. The four side faces of the square barrel are each provided with an inclined opening communicating with the interior of the barrel, an inclined supporting rod is slidably inserted into each inclined opening, and a plurality of inclined grooves linearly distributed at equal intervals in the vertical direction are formed in the four side faces of the supporting rod. A plurality of inclined blocks which are linearly distributed at equal intervals in the inclined direction of the inclined supporting rod are fixed to the plate face of the inclined supporting rod, and the inclined supporting rod is connected with the inclined grooves in the corresponding side faces of the supporting rod in a meshed mode through the inclined blocks. In the dynamic process of adjusting the overall height of the machine frame, the inclined supporting force provided by the inclined supporting rod is dynamically adjusted in a relevance mode along with the change of the combined length of the supporting rod and the square barrel, and the structure stress requirement at the current height is met all the time.

The utility model discloses a height-adjustable iron stand bunk bed which comprises a lower bed board, an upper bed board is arranged above the lower bed board, an adjusting mechanism is arranged between the lower bed board and the upper bed board, and the adjusting mechanism comprises a first adjusting piece, a second adjusting piece and a transmission rod. The first adjusting part and the second adjusting part are arranged in the middles of the two sides between the lower bed board and the upper bed board respectively, the transmission rod is arranged between the first adjusting part and the second adjusting part, the first adjusting part and the second adjusting part are the same in internal structure, and the first adjusting part comprises a top box, an adjusting square cylinder and an adjusting column; the top box, the adjusting square cylinder and the adjusting column are sequentially arranged from top to bottom. The height of the double-layer bed with the iron stand can be adjusted, practicability is improved, and therefore the problems that when the double-layer bed with the iron stand is used, the height requirements of different users cannot be met, and installation limitation of a non-standard space cannot be met are solved.

The invention relates to the technical field of permeable concrete, and discloses a test method for the permeability coefficient of permeable concrete, wherein the method comprises the following steps: immersing a test piece in water for 24 hours; sealing four peripheral sides of the test piece by a membrane layer; placing the test piece in the middle of a cylinder cavity; inserting the lower part of a square cylinder into a water tank; and obtaining the permeability coefficient of the permeable concrete by a formula. By using the above method, water can be prevented from penetrating from the contact surface between the test piece and the square cylinder during the test, resulting in errors in the test data, thereby improving the efficiency and further improving the accuracy of the test results.

The invention discloses an electrode embedded quartz assembly and a manufacturing method thereof, and relates to the field of quartz assemblies, the electrode embedded quartz assembly comprises a mounting cylinder and a driving rod rotatably mounted in the mounting cylinder; a moving square cylinder is slidably mounted in the mounting cylinder, a connecting piece is fixedly mounted at the lower end of the moving square cylinder, and a negative plate is mounted at the lower end of the main quartz plate in a clamping manner. According to the electrode embedded quartz assembly and the manufacturing method thereof, the detection process can be completed when the internal liquid level of a device to be detected changes by arranging two groups of negative plates with different sizes, and the accuracy of liquid level detection by a sensor can be ensured by arranging two groups of negative plates in each group; the movable square cylinder can move downwards in the mounting cylinder, so that the main quartz plate drives the negative plate to move downwards, the height position of the negative plate is changed, the quartz plate is suitable for devices with different liquid levels, and the application range of the quartz assembly is greatly expanded.