65 results about "Sandpit" patented technology

The invention solves the problems of low precision of the conventional method for identifying a golf course based on a medium-resolution remote-sensing image and high cost and narrow amplitude of the conventional method for identifying the golf course based on a high-resolution image and a high-spectrum image in the prior art, and provides a method for identifying the golf course based on a medium-resolution multispectral remote-sensing image. The basic concept of the method is that a target region of the golf course is obtained by identifying two basic elements, namely a fairway lawn and a water body, of the golf course according to a space co-occurrence characteristic combination; thematic information of a third basic element, namely a sandpit, in the target region is extracted; and therefore, whether the target region of a ball park is the golf course is judged by taking the single target region as a unit and taking level landscape indexes of the types of the fairway lawn, the water body and the sandpit in the target region and a level landscape index of the landscape of the whole target region of the golf course as distinctive characteristics of the ball park. The method has the advantages of high pertinency, high precision and low cost.

The invention relates to a momentum swing which is composed of swing ropes (4), a swing board (5), a support, a rail car (1), a sandpit, sand and a telescopic board. The sandpit is formed in the ground below the swing board (5) and filled with the sand, and safety is remarkably improved compared with that of a traditional swing. The upper ends of the swing ropes (4) move along with the rail car (1), the rail car (1) has multiple motion modes, and the swing has more enjoyment and thrill and the larger exercise amount compared with the traditional swing and has relatively large attraction to middle-aged and young people. The momentum swing contains rich physical content and shows colorful physical models, and in motion, the swing participates in the complex physical process, stimulates scientific interest, improves perceptual knowledge of physical phenomena, lays a foundation for sublimating perceptual knowledge into rational cognition and creates conditions for improving the scientific quality of citizens.

An activity enclosure and method of use thereof, the enclosure having a play area with a centrally located portion for parental observation of children at play. The enclosure has benches and barbecue grills, and radially-extending play segments that selectively include basketball, croquet, miniature golf, golf pool, paddleball, a sandpit, a Jungle Gym, and so forth. The central portion is covered to protect from the elements. The entire play area is fenced in and may comprise a variety of overall shapes (square, rectangle circle, etc.) with a central portion having radial play segments emanating therefrom. Game equipment with identifying names is provided to new home purchasers for utilizing on the play areas.

The invention discloses an arietinous piece forging method. The arietinous piece forging method comprises the following steps that (1) sorting and blanking are carried out, specifically, the head and tail of a blank are removed, and then blanking is carried out; (2) heating is carried out, specifically, a furnace is provided, the furnace loading temperature is not higher than 1000 DEG C, the furnace temperature needs to be maintained for two and half hours when reaching an initial forging temperature, and material sections are fed into the furnace in sequence, namely in the first-in first-out sequence; (3) forging extrusion is carried out, specially, the interval of main pressure heads is adjusted for upsetting extrusion after the blank is loaded to a die, and the main pressure heads return after the set stroke value is met; (4) punching ejection is carried out, specially, the interval of punch bits is adjusted to be suitable for punching formation, and the punch bits return after the stroke is met; and (5) cooling is carried out, specially, the final forging temperature of the forge is not lower than 800 DEG C, and the forge is placed in a sandpit to be slowly cooled.

The invention discloses a method for ecologically restoring an abandoned sandpit. The method for ecologically restoring the abandoned sandpit comprises the following steps: a, smoothing the land; b, preparing seedlings; c, digging holes and preparing soil; d, planting vetiveria zizanioides; e, managing the vetiveria zizanioides; and f, postprocessing. In the same year, the abandoned sandpit can be enabled to increase the organic matter of the shallow soil layer by 35%, the soil stickiness by 44% (represented by the number of soil particles), the microbial community by 20% and the soil water fixing capability by 10%, and decrease the water and soil loss by 30% and the sand dust by 30%; in such a way, the abandoned sandpit can basically reach the arable degree within 3-5 years; the technique for ecologically restoring the abandoned sandpit provided by the invention mainly adopts biological measures and certain auxiliary engineering measures; therefore, not only are the soil nutrient components improved, but also a good water and soil conservation effect is realized; moreover, the manufacturing cost is lower; and in addition, a good ecological environment improvement effect and a good visual effect are realized as well.

The invention discloses a high school physics horizontal projectile motion demonstration device. The device comprises a first bracket, a base, a second bracket, a magnetic panel display screen, a working board, a magnetic ball, a shell, a groove, tension sensors and a display; the second bracket is arranged at the upper end of the base; the magnetic panel display screen is mounted to one side of the second bracket and is located above the base; the upper end of a telescopic rod is provided with the working board; the tension sensors are installed inside a protruding groove; the magnetic ball is disposed inside the groove; and the display is embedded into the front surface of the shell. The high school physics horizontal projectile motion demonstration device of the invention has the advantages of scientific and reasonable structure and safe and convenient use. According to the demonstration device, the telescopic rod is adopted, so that the working board can be fixed; a sandpit is adopted, so that damage to the base caused by the falling of the magnetic ball can be prevented, and therefore, damage to the appliance can be avoided; and a plumb line is set, so that whether the workingboard is level can be ensured, the accuracy and stability of the results of an experiment can be ensured; and the tension sensors are adopted, so that the results of the experiment can be more accurate.

The invention discloses a sandpit with a loosening function, and relates to the technical field of sports grounds. The sandpit with a loosening function comprises a sandpit body and a sand containing pit. The sandpit body is provided with the sand containing pit extending downwards. First sliding rails are correspondingly arranged on the two sides of the sand containing pit, and a shielding structure is arranged on the first sliding rails. The shielding structure is composed of two supporting rods, a connecting rod, a folding tent and a storage rod, wherein the supporting rods are located and slide in the first sliding rails, the connecting rod is arranged at the top ends of the supporting rods and located between the two supporting rods, and the folding tent is arranged on the connecting rod. The sandpit is simple and reasonable in structure, sand in the sandpit can be effectively loosened, the sand in the sandpit can be loosened in the shielding process, and the problem that the service life of a whole structure is affected by sand is solved.

The invention relates to the field of soil remediation, in particular to a soil remediation device. In order to solve technical problems in the prior art, the soil remediation device is provided. According to the technical scheme, the soil remediation device comprises a manual auxiliary pushing handle, a bottom-layer moisture soil spreading mechanism, a filling mechanism, a slabstone conveying-placing mechanism and the like, wherein a first power wheel stand and a third power wheel stand are sequentially connected with the lower part of a second rack plate. Through the soil remediation device,the layered landfill remediation of a sandpit is achieved; and specifically, moisture soil is uniformly spread on the bottom layer of the sandpit for bottom trough formation at first, the foundationof the sandpit is stabilized, the moisture soil is tightly combined with the side wall of the sandpit, the landfill operation on the sandpit is performed by using sand and stone which have the same soil quality as the surrounding environment, the sandpit subjected to the landfill operation is compacted by large slabstone for a long time, the soil quality of the sandpit is compressed and solidified, the remediation of the sandpit is completed, and the effect of preventing water and soil loss as well as protecting ecology is achieved.

The invention relates to a post-forging heat-insulating protective guard of a 2000T high-speed forging press. The guard is mainly used for performing post-forging heat treatment on forge pieces produced by the 2000T high-speed forging press. The heat-insulating protective guard comprises a sandpit (1), a protective guard (2) and a chain (3) with a lifting hook. The protective guard (2) is in a transverse semi-cylindrical shape. Fireproof heat-insulating materials (2.1) are paved on the inner wall of the protective guard (2). The protective guard (2) is buckled above the sandpit (1). The chain (3) with the lifting hook is arranged on the top of the protective guard (2). During moving, the protective guard is hung at the specified position by a travelling crane. The forge pieces are kept at a certain temperature in a tempering furnace and then pushed into the sandpit and covered by the protective guard, so a closed space is formed in the protective guard to achieve the similar effect of slow cooling in the tempering furnace. Therefore, the tempering furnace is used reasonably and the production efficiency is improved.

The invention relates to the field of sports equipment, in particular to a leveling device for a long jump sand pool. The leveling device comprises a support mechanism, a power mechanism for providingpower is installed on the support mechanism at the edge of the sand pool, and the power mechanism is connected with a screening mechanism for preliminarily cleaning sand in the sand pool; an arc-shaped baffle used for shielding the sand in the sand pool is installed on the outer side of the screening mechanism; a crushing mechanism for retreating the sand is arranged on one side of the screeningmechanism, and a sand flattening brush for flattening the cleaned sand is mounted at the bottom of the crushing mechanism; and the screening mechanism is connected with the power mechanism, and the screening mechanism and the crushing mechanism are driven by the power mechanism to rotate. The leveling device can crush and screen frozen or hardened sandy soil, the sand in the sand pool is cleaned,and the safety of the sand pool in use is guaranteed.

The invention discloses a sand making and washing integrated production line. The production line comprises a bar feeder, a crusher, a sand washing pool, an elevator, a vibrating screen and a conveying belt, wherein a jaw crusher feeding hopper is further arranged at the upper end of the bar feeder and fixedly connected with the bar feeder. Through improving the structure and steps of a traditional sand washing and sand making production line, the sand making and washing integrated production line can solve the following problems that an existing sand making and sand washing production line issimple in process, blockage is easy to happen at a feeding port, no auxiliary workbench or transfer stock bin is arranged during feeding, and if the working speed of mechanical work at rear end of the production line cannot keep up with the working speed of front section in the conveying process, raw material congestion is likely to happen; and meanwhile, a traditional sand-making crushing mode is single and cannot be changed along with different raw material conditions, and in the using process, a conveying belt structure is fixed, and raw material conveying cannot be carried out at different positions.

The invention discloses a novel civil construction mortar stirring device which comprises a screening device, a stirring device and a containing device. A sand pool, a power chamber and a screening chamber are arranged on the screening device, the sand pool is arranged on the right side of the screening device, the interior of the sand pool is connected with a conveying belt through a support, andthe power chamber is arranged in the middle of the screening device. The screening chamber is arranged on the left side of the screening device, the stirring device is placed on the left side of thescreening device, and the containing device is placed on the left side of the stirring device. According to the novel civil construction mortar stirring device, coarse, medium and fine screening and stirring can be easily carried out on the mortar for constructional engineering.

The invention discloses a track folding dynamic self-retracting type sandpit circulating self-supporting leveling device which comprises a sand surface connected dynamic balance circulating leveling mechanism, a folding portable guide track and a continuous crossing stable walking mechanism, and the continuous crossing stable walking mechanism is clamped on the folding portable guide track in a rolling mode. The sand surface connected dynamic balance circulating leveling mechanism is fixedly arranged on the upper wall of the continuous crossing stable walking mechanism in a penetrating mode. The invention belongs to the technical field of sports goods, and particularly provides a track folding dynamic self-retracting type sandpit circulating self-supporting leveling device which applies a self-service principle and a dynamic characteristic principle to automatic leveling of uneven positions on the surface of a sandpit to achieve intelligent dynamic leveling of the surface of the sandpit. According to the folding portable guide rail, the segmentation principle is applied, the turnover performance of sandpit leveling equipment is improved, the maintenance cost of the equipment is reduced, and the service life of the equipment is prolonged.

The invention provides a sand washing machine. The sand washing machine comprises a sand washing pool, a supporting frame fixedly connected to the sand washing pool, a rotating wheel rotatably connected to the supporting frame and a motor driving the rotating wheel to rotate. The rotating wheel comprises a rotary shaft erected to the supporting frame, a circular screen mesh connected to the rotaryshaft through a supporting rod and a plurality of separation plates fixedly connected to the peripheral surface of the screen mesh and parallelly arranged in the circumferential direction, a plurality of screen plates are fixedly connected with the position between every two adjacent separation plates, first through holes are formed in the screen mesh, and second through holes are formed in the screen plates. According to the sand washing machine, the multiple separation plates and the screen plates are arranged, the first through holes are formed in the screen mesh, the second through holesare formed in the screen plates, therefore the screen mesh and the screen plates enable mud in sand to pass through when the rotating wheel rotates, sand washing is thorough, the sand washing efficiency is improved, and rework does not need to be conducted.

The invention discloses coal-bed gas well flow-back fluid environment-friendly treatment equipment, and relates to the technical field of flow-back fluid treatment, the coal-bed gas well flow-back fluid environment-friendly treatment equipment comprises two bases preset on the ground; the two sand collecting pools are respectively fixed on the upper end surfaces of the two bases; the sand discharging bin is fixed between the two sand collecting pools, a liquid inlet is formed in the position, close to the top, of one side of the sand discharging bin, a liquid outlet is formed in the position, close to the bottom, of the other side of the sand discharging bin, and valves are installed on the liquid inlet and the liquid outlet correspondingly; the fixed shaft is fixed between the two sand collecting pools and penetrates through the sand discharging bin and the sand collecting pools, and a synchronous wheel is rotationally arranged at the end, located in one of the sand collecting pools, of the fixed shaft; the rotating motor is fixed outside one of the sand collecting pools and is connected with the synchronous wheel through a synchronous belt; and the sand discharging assembly is coaxially arranged on the fixing shaft, is located in the sand discharging bin and is fixed to the synchronous wheel through a plurality of connecting columns which are circumferentially arranged.

The invention discloses a long jump sand loosening device and a long jump sand loosening system. The long jump sand loosening device is used for conducting sand loosening treatment on a sandpit of long jump movement and comprises a transverse photoelectric sensor, a longitudinal photoelectric sensor, a sand loosening device, a lifting mechanism, a moving mechanism and a main control circuit, wherein the transverse photoelectric sensor comprises a transverse light emitter and a transverse light receiver; the longitudinal photoelectric sensor comprises a longitudinal light emitter and a longitudinal light receiver; the sand loosening device comprises a sand loosening mechanism, which comprises a connecting part and a sand loosening part connected with the connecting part; the lifting mechanism is used for driving the sand loosening mechanism to move in the vertical direction; the moving mechanism is used for driving the sand loosening mechanism to move in the horizontal plane; the main control circuit is electrically connected with the transverse photoelectric sensor, the longitudinal photoelectric sensor, the sand loosening device, the lifting mechanism and the moving mechanism andcalculates the long jump distance according to the transverse photoelectric sensor and the longitudinal photoelectric sensor. According to the technical scheme, the sand loosening efficiency can be improved.

The invention relates to the technical field of ecological restoration, and discloses a desert tree planting device capable of automatically discharging and preventing collapse for ecological restoration. The desert tree planting device comprises a machine body, the upper side of the machine body is provided with a material containing box, the lower side of a tripod is rotatably connected with a second connecting rod, the lower side of the second connecting rod is rotatably connected with a poke rod, a first swing rod is fixedly connected to the lower side of a first rotating shaft, a first movement chamber is slidably connected to the outer side of the first swing rod, first sliding rods are rotatably connected to the upper side and the lower side of the first swing rod, a reinforcing rod is arranged on the upper right side of each first sliding rod, and a second movement chamber is slidably connected to the outer side of the reinforcing rods. According to the desert tree planting device capable of automatically discharging and preventing the collapse for the ecological restoration, the reinforcing rods are intermittently pushed to move towards the outer side, and then the reinforcing rods move back and forth under the action of spring assemblies of the reinforcing rods, so that a sandpit is compacted, and the effects that reinforcing can be conducted and the sandpit is not prone to collapse are achieved through the structure.

The invention belongs to the technical field of covering sand platforms, and particularly relates to a covering sand table device for long jump. The covering sand table device comprises a covering drive device and a fixed device. After a sandpit is used, the covering sand table device is transferred to the edge of the sandpit; then the fixed device is fixed; one end of a thin film is fixed on thefixed device; the covering drive device is placed on the upper side of the sandpit; and then the covering drive device is manually pulled to extend the thin film in the covering drive device outwardsto cover the sandpit, so that the influence on the use by athletes due to the fact that rainwater falls into the sandpit to cause caking and hardening of sand in the rainy weather during the non-usingprocess is prevented. During use, the covering drive device is pulled manually to retract the thin film in the covering drive device inwards to expose the sandpit.

The invention discloses a forging method of a hanger. The forging method of the hanger comprises the following steps that (1) sorting and blanking are carried out, specifically, the head and tail of a blank are removed, and then blanking is carried out; (2) heating is carried out, specifically, a furnace is provided, the furnace loading temperature is not higher than 1000 DEG C, the furnace temperature needs to be maintained for two and half hours when reaching an initial forging temperature, and material sections are fed into the furnace in sequence, namely in the first-in first-out sequence; (3) forging extrusion is carried out, specially, the stroke of main pressure heads of sliding blocks is set, the interval of the main pressure heads is adjusted for upsetting extrusion after the blank is loaded to a die, and the main pressure heads return after the set stroke value is met; (4) punching ejection is carried out, specially, an upper sliding plate is moved to the punching station, the interval of punch bits is adjusted to form an inner hole, and then the punch bits return; and (5) cooling is carried out, specially, the final forging temperature of the forge is not lower than 800 DEG C, and the forge is placed in a sandpit to be slowly cooled.

The invention discloses a multifunctional ecological water diversion device. The multifunctional ecological water diversion device sequentially comprises a water inlet part, a first-stage desilting part, a second-stage desilting part and a water outlet part along the water diversion direction; at least one front gate and a floating object intercepting device are arranged in the water inlet part; at least one rear gate and a filtering and adsorbing device are also arranged in the water outlet part; the first-stage desilting part comprises an annular outer shell and a flow guide ring arranged inthe outer shell; the flow guide ring is a C-shaped flow guide ring concentric with the annular outer shell; a notch of the flow guide ring is formed in the downstream face; a sand gathering pool is formed in the C-shaped flow guide ring; the second-stage desilting part comprises a desilting shell and a sand collecting pool which can be taken out through external force; the desilting shell at thejoint of the second-stage desilting part and the first-stage desilting part is a necking part; and the section shape of the sand collecting pool in the horizontal direction is consistent with that ofthe desilting shell. The device not only can effectively remove toxic and harmful substances such as large floating objects, silt and heavy metals in a channel, but also can realize multi-condition application in different water use scenes.

The invention discloses a sand pit for sorting garbage and loosening sand. The sandpit comprises a pit body, a lifting cavity with an upward opening is formed in the pit body, a collecting cavity is formed in the pit body, and the collecting cavity is located on the left side of the lifting cavity; the left side wall and the right side wall of the upper portion of the lifting cavity communicate with collecting cavities with the lower side walls inclined to the lifting cavity and provided with upward openings correspondingly, the lower side wall of the overturning cavity on the left side communicates with a falling cavity, and the falling cavity communicates with the collecting cavities. Through the arrangement of a scraping plate, after the sand pit is used, the scraping plate moves leftwards to level the sand pit.

The invention discloses a mining and separating method for riverway dredged materials and belongs to the technical field of environmental protection engineering and building material collection. The mining and separating method takes the riverway dredged materials as raw materials and comprises the following steps that S01, the raw materials are pumped out of a riverway by utilizing a sand pump and are conveyed to a floating body through a pipeline; S02, natural sand and stones are separated through vibrating screens, and the natural sand is conveyed to a sand pit; S03, the stones are separated into large-particle stones with the partical size being larger than 4 cm and small-particle stones with the partical size being less than and equal to 4 cm after being screened; S04, the large-particle stones and the small-particle stones are conveyed to a sand making machine to be prepared into sand after being crushed correspondingly, and then the sand is conveyed to the sand pit; and S05, thesand inside the sand pit is conveyed to a sand field by utilizing the sand pump. By means of the mining and separating method for the riverway dredged materials, the natural sand and the machine-madesand are obtained by mining and separating the riverway dredged materials, the natural sand is fine and smooth in hand feeling and large in bearing capacity and is a good building material, the machine-made sand of different partical sizes can be prepared, and the natural sand and the machine-made sand both can be used in highway, railway, hydropower, metallurgy and other industries.

The dehumidification device comprises a sand pit and is characterized in that a variable-speed motor is arranged in the sand pit, a rotating shaft is installed on the variable-speed motor, an installation sleeve is installed on the rotating shaft, the rotating shaft is connected with a plurality of rotating columns through meshing assemblies, each rotating column is slidably connected with a dehumidification plate, and the dehumidification plates are arranged on the sand pit. End covers are mounted on the dehumidification plates, and the dehumidification plates are filled with hot sand. The dehumidification plate moves in the freedom degrees of the three axes, the temperature of the plywood can be more uniform, and water on the surface and in the plywood can be removed more quickly.

The present invention relates to a method for identifying the cold resistance of grapes based on frost climate chamber-greenhouse sand storage culture. The method comprises the steps of S1, collectingnormally-growing and disease-free annual mature branches as test branches on January 5 to 10; S2, putting all the test branches into a frost climate chamber, and performing dark environment treatmentfor 10-12 hours under the conditions that the temperature is -24 DEG C to -26 DEG C and the relative humidity is 60-65%; S3, transferring the test branches treated with the frost climate chamber intoa sunlight greenhouse for sand storage culture, horizontally burying the test branches into the position of 10-12 cm below the surface of a sand pit, performing complete watering once, covering the surface of the sand pit by a light-pervious plastic mulching film, controlling the relative humidity and the temperature of the position of 10-12 cm below the surface of the sand pit to be not lower than 60% and 15-20 DEG C, and enabling the sand pit to be exposed to light from 7:30-8:30 a.m. to 14:30-15:30 p.m. each day; and S4, identifying the cold resistance, wherein the test branches are takenout after sand storage culture of 35-40 days, and the germination rate is subjected to statistics and serves as a judgment index of the cold resistance. The frost climate chamber and the greenhouse are combined for sand storage culture, and by investigating the germination rate of the branches, the cold resistance of the ultra-large-population (ten thousand or above) grapes is quickly and accurately identified.