3713results about How to "Easy to disassemble and replace" patented technology

The invention relates to a water body experiment apparatus and a water body experiment method. The apparatus comprises a sediment release unit, a culture unit, a control unit, a water body controlling system, and a water quality monitoring system. The sediment release unit, the culture unit, and the control unit are sequentially arranged adjacently. Each two adjacent units are connected with a baffle, such that an experiment box body with the three units communicating with each other is formed. The water body controlling system is used for regulating physical and chemical indicators of water body in the experiment apparatus. The water quality monitoring system is used for detecting the physical and chemical indicator values of water body, sediment, plankton and/or submerged aquatic plants in the experiment apparatus. According to the invention, sediment sampling, sediment pollutant releasing, and algae and submerged plant growing are effectively combined. With the apparatus, sediment release effect of different water environments can be simulated, and influences of different ecological projects (environmental-protection dredging projects and submerged aquatic plant restoration projects) upon water body eutrophication and water body pollution can be quantitatively studied.

The invention discloses a plate clamper platform for a falling weight impact test, and an impact speed measurement method. The plate clamper platform comprises a clamper structure, a supporting lifting structure and a laser sensor, wherein the clamper structure comprises a plate clamping device, a multi-angle rotation device and a clamper bottom plate, the multi-angle rotation device comprises wall plates, wall plate bolts and a bottom plate bolt, each wall plate is provided with a central hole and two arc-shaped grooves, the two arc-shaped grooves are symmetrically arranged relative to the central hole, clamping plates can rotate along the arc-shaped grooves after the wall plate bolts are completely loosened, the supporting lifting structure comprises a platform and a lifting driving device, the clamper bottom plate can rotate by adopting the bottom plate bolt as the center and can slidably move along a straight strip hole, and the laser sensor is arranged below the weight tray positioned on the periphery of a hammer head. With the plate clamper platform and the impact speed measurement method of the present invention, the composite material plate specimen can be tightly clamped, the multi-angle impact on the specimen can be achieved, and the speed change during the drop hammer falling and impact process can be real-timely measured.

The invention discloses an automatic rope distributing and discharging device of a winch, which comprises a speed-setting box and a rope discharging mechanism, wherein the rope discharging mechanism comprises a bidirectional screw, a ratchet shaft, a rope driving wheel, a rope pressing wheel and a slide block, the rope driving wheel is arranged on the ratchet shaft, the rope pressing wheel is correspondingly arranged outside the rope driving wheel, two sides of the rope pressing wheel are provided with compacting devices, the slide block is arranged on the bidirectional screw, and a ratchet pin is arranged between the rope driving wheel and the ratchet shaft. The invention has novel design, reasonable structure and high safety property, can not only lead a rope to be automatically sequentially distributed on a winding drum, can lead the rope to be forcedly driven out when placing the rope, and can be applied to various winches used under different conditions and environments.

The invention discloses an automatic robot hearth opening and blocking device which comprises a guide rail (1), a moving base (2), a specialized robot (3), a cable delivery mechanism (4), a combined tool rack (5) and a heat screen (10), wherein the guide rail (1) is arranged on the ground in the axial direction of a hearth (A); the heat screen (10) is arranged between the hearth (A) and the guide rail (1); the moving base (2) can move along the guide rail (1) forward and backward; the specialized robot (3) is arranged on the moving base (2); the cable delivery mechanism (4) is arranged on a side surface at the front end of the guide rail (1) and positioned behind the heat screen (10); the combined tool rack (5) is arranged on a side surface at the rear end of the guide rail (1). The automatic robot hearth opening and blocking device can realize automation of calcium carbide discharging operation such as hearth opening and clearing, drill rod discharging, and hearth blocking, and is convenient to dismantle, and replace highly consumable tools for opening the hearth.

The invention provides a multi-level damping grading yield metal damper comprising at least two annular damper bodies coaxially arranged in an inside and outside sleeving mode. An interval is arranged between the two adjacent annular damper bodies connected through a connecting base plate; the two annular damper bodies are used for being connected with a building structure; and when bent and deformed, the annular damper body relatively located in an inner ring preferentially yields than the annular damper body relatively located in an outer ring. The multi-level damping grading yield metal damper can produce the good damping energy dissipation effect in small earthquakes, middle earthquakes and large earthquakes simultaneously.

The invention discloses network communication equipment for multimedia teaching. The network communication equipment for multimedia teaching comprises a base, a groove is formed in the middle of the bottom of the base, and a positioning device is arranged at an inner cavity of the groove. A drive shaft is connected to the right sides of stand columns in a penetrating mode. Fixed columns are fixedly connected to the tops of the opposite sides of telescopic columns. A transverse plate is fixedly connected to the bottoms of the fixed columns. A sliding groove is formed in the middle of the top ofthe transverse plate. Transverse strips are movably clamped to the two sides of an inner cavity of the sliding groove. Side plates are fixedly connected to the opposite sides of the transverse strips. The transverse strips are sleeved with springs. Through cooperative use of the base, the groove, idler wheels, a bottom plate, a limiting plate, an adjusting rod and an adjusting plate, the problemthat a traditional projector is not convenient to move to another classroom for teaching is solved, and through cooperative use of the stand columns, the telescopic columns, a motor, the drive shaft,clamping strips and gears, the problem that the height of a multimedia teaching device cannot be conveniently adjusted is solved.

A power-operated toilet paper dispensing device for automatically providing a desired quantity of existing toilet paper as needed by a user may include a housing adapted to be affixed to a support surface. Further, the device may include a plurality of spindles situated within the housing. Each of the spindles may receive and support a corresponding roll of toilet paper. A mechanism may be included for automatically and independently rotating each of the spindles along a corresponding first rotational path defined within the housing. Such a mechanism may be automatically responsive to a triggering event such that a first one of the spindles automatically and independently articulate along the corresponding first rotational path while a second one of the spindles remains statically disposed at a fixed position within the housing. Additionally, the automatically and independently rotating mechanism may automatically detect the triggering event at a location exterior of the housing.

The invention discloses a three-section synchronous hidden slide rail, which comprises a mobile track, a middle track, a fixed track and a damping mechanism. The three-section synchronous hidden slide rail is characterized in that an upper rack and an upper roller holder provided with a roller are arranged between the mobile track and the middle track; a split lower roller holder provided with a roller is arranged between the middle track and the fixed track, and a rack is arranged on the surface of the lower roller holder; a gear component is engaged between the upper rack and the lower roller holder, and the gear component controls the mobile track and the middle track for synchronous or staggered operation according to the magnitude of acting force; the damping mechanism is assembled on the fixed track. According to the three-section synchronous hidden slide rail, a gear A and a gear B of the gear component are tightly matched and assembled with a polygonal hole through a polygonal column, when the acting force is smaller than a constant value, the synchronous operation is implemented; when the acting force is greater than the constant value, the polygonal hole is expanded, the two gears slip and rotate, and the mobile track and the middle track run separately. The gear component, the upper rack and the lower rack are guaranteed to be matched at correct positions, so that the slide rail can be continuously used, and thus the racks and the gears are difficult to damage.

The invention provides a hose cleaning robot and relates to the field of pipeline inner wall crawling robots. In order to meet the requirements for crawling and cleaning of the inner wall of a hose, the robot for crawling on and cleaning the inner wall of the hose is designed. The robot comprises an upper fixing mechanism, a lower fixing mechanism and a middle heading mechanism. The two fixing mechanisms are located at the two ends of the middle heading mechanism respectively to achieve the fixing effect. The middle heading mechanism is in charge of connecting a whole machine, pushes the upper fixing mechanism to move forwards and pulls the lower fixing mechanism to ascend. Both the upper fixing mechanism and the lower fixing mechanism are designed as slider crank mechanisms to achieve the expanding, fixing, shrinking and separating functions. Curved face supporting boards driven by the upper fixing mechanism form a bud shape when folded, so that a road is opened; and when unfolded, the curved face supporting boards make tight contact with the inner wall of the hose to achieve the fixing effect. The two ends of a supporting board of the lower fixing mechanism are provided with telescopic rods, so that linear motion of the supporting board is guaranteed, and the supporting board is supported stably when fixed. A lead screw slider module is adopted for designing the middle heading mechanism, so that the heading function is achieved.

The invention discloses a high-temperature superconducting magnet liquid nitrogen zero-evaporation cooling system. Liquid nitrogen is selected to be used as cooling media, a thermosyphon principle is utilized, and in addition, a superconducting magnet is cooled in a way of forming a refrigerating machine installing dewar, a magnet cooling dewar, a liquid nitrogen communication pipeline and an evaporation nitrogen gas communication pipeline into a sealed circulation system. The high-temperature superconducting magnet liquid nitrogen zero-evaporation cooling system solves the problems that in the liquid nitrogen direct soaking cooling mode, liquid nitrogen needs to be regularly supplemented, in the large-cooling-capacity direct cooling mode, the superconducting magnet cooling effect is poor, in the forced convection circulation cooling, a high-price low-temperature nitrogen pump needs to be adopted, and the cost is high. The temperature of cooling media of liquid nitrogen is controllable, conditions are provided for studying the performance of high-temperature superconducting magnets at the specific temperature. The system has the advantages that the refrigerating machine and the superconducting magnet are placed in a separated way, the damage to the refrigerating machine caused by superconducting magnet superconducting loss is avoided, and the safety is improved. The superconducting magnet and a current lead wire form a whole body which can be directly hung out from or hung into the magnet cooling dewar, and the dismounting, the mounting and the replacement are convenient.

The invention relates to a cigarette mainstream smoke on-line analysis device and a cigarette mainstream smoke on-line analysis method. The device comprises a smoking machine and an atmospheric pressure chemical ionization tandem mass spectrometer. The on-line analysis method comprises the steps that: when the cigarette is smoked, mainstream smoke is collected into a mainstream smoke collection bottle; the smoke sample is directly introduced into the atmospheric pressure chemical ionization tandem mass spectrometer through a feeding valve, and is subjected to fast analysis. Compared with a traditional cigarette mainstream smoke analysis method, the smoking machine and the sample collection and introduction device have the advantages of simple structure and convenient operation. The sampling bottle of the smoking machine is connected to an ion source of the mass spectrometer through a capillary, such that sample direct introduction can be realized. Only a few seconds are needed from cigarette smoking to feeding and analysis. The sensitivity is high, and repeatability is good. The method and the device are suitable for on-line analysis of organic compounds in single-suction and suction-by-suction cigarette mainstream smoke.

The invention discloses a high-pressure controllable slide-valve type mechanical combined sealing system. The system comprises a controllable slide valve stationary seal assembly and a rotating mechanical seal assembly; the controllable slide valve stationary seal assemble comprises a slide valve gland (13), a slide valve (11) and a tapered shaft sleeve (12) sheathed on a shaft shoulder, the tapered shaft sleeve (12) is positioned inside the slide valve gland (13), the slide valve (11) which is partially positioned in a flange (16) is hermetically connected with the tapered shaft sleeve (12) in a sliding way, and the flange (16) is provided with a pressure source channel I (161) and a pressure source channel II (162) which are respectively used for controlling the slide valve (11) to slide leftwards or slide rightwards; the rotating mechanical seal assembly comprises a rotating seat (9) which is fixedly connected with a shaft sleeve (10), a rotating ring (17) and a stationary ring (7) which are closely jointed on a seal face and the like. The sealing system can help greatly reduce and avoid leakage of dangerous fluid and serious accidents.

The invention relates to a production process for an electric toothbrush, in particular to a production process for an electric toothbrush casing. The production process comprises the steps that firstly spraying is conducted, specifically, a shading light oil layer is sprayed on the front or the reverse of a transparent decorating part; secondly laser engraving is conducted, specifically, the laser engraving technique is adopted and the a needed shape is hollowed out on the shading light oil layer; thirdly electroplating is conducted, specifically, a metal layer or a metallic oxide layer is vacuum plated on the front of the transparent decorating part; fourthly injection molding is conducted, specifically, a transparent soft rubber layer is injected on the light source region of an electric toothbrush handle; and fifthly assembling is conducted, specifically, the transparent decorating part is assembled on the transparent soft rubber layer and the reverse of the transparent decorating part is attached to the transparent soft rubber layer. According to the production process, processing risk sharing is achieved; the loss cost caused by processing errors is lowered; and the implicit glowing effect is achieved, and the lighting effect is even and gentle.

A partial discharge detection test platform of a medium-voltage switch cabinet comprises a metal cabinet, a fault model, three conducting rods and a signal detecting unit. The conducting rods are symmetrically vertically arranged in the metal cabinet, each conducting rod is formed by an upper conducting rod body and a lower conducting rod body, the upper ends of the upper conducting rod bodies penetrate through the top of the metal cabinet to be connected with wiring columns while the lower ends of the same are connected with the fault model the upper ends of the lower conducting rod bodies are connected with the fault model while the lower ends of the same are connected with the metal cabinet. The signal detecting unit comprises a ultrasonic wave sensor, a ultrahigh frequency sensor, a TEV (transient earth voltage) sensor, Rogowski coils, high-voltage probes, and a power-frequency high-voltage source, wherein the ultrasonic wave sensor and the ultrahigh frequency sensor are arranged near a square hole of the metal cabinet and respectively connected with a first digital oscilloscope and a second digital oscilloscope, the TEV sensor is adhered on the outer surface of the metal cabinet and connected with the second digital oscilloscope, the Rogowski coils are coiled on the lower conducting rod bodies, the high-voltage probes are arranged on high-voltage inlet wires of the insulator wiring columns, the Rogowski coils and the high-voltage probes are all connected with the first digital oscilloscope, and the power-frequency high-voltage source is connected with the wiring columns. The partial discharge detection test platform of the medium-voltage switch cabinet is capable of simulating partial discharging in the real switch cabinet, convenient to move and operate, considerable in insulation distance, and good in safety.

The present invention relates to a roof structure for buildings, especially houses, buildings and/or dwellings. The structure comprises; at least a connecting element (2) in the form of a profiled member fixable to the bearing structure and provided with a plurality of conductor elements (10), consecutively aligned along the connecting element (2); a plurality of roofing elements (4) in the form of tiles, which are connected to the connecting element (2) and which each bear at least a photovoltaic module (6); in connection with the terminals of the photovoltaic module (6) the conductor elements (10) enable a series electrical connection to be established between two adjacent roofing elements (4) consecutively arranged in rows (13, 14) in a main development direction (3).

The invention relates to a direction changing sensor capable of simultaneously measuring a direction changing angle and a torque. The direction changing sensor comprises an input shaft (4), an output shaft (8), a torsion bar (5), a first signal round disk (1), a second signal round disk (2) and a third signal round disk (3). One end of the torsion bar (5) is connected with the input shaft (4), and the other end is connected with the output shaft (8); the first signal round disk (1) is connected with the input shaft (4); the second signal round disk (2) and the third signal round disk (3) are connected with the output shaft (8); the three signal round disks are gears made of a ferromagnetic material; the outer peripheries of the three signal round disks are provided with magnetic resistance convertor assemblies (7); and each magnetic resistance convertor assembly (7) comprises three magnetic induction sensors which are respectively arranged at the outer peripheries of the three signal round disks. By utilizing the three signal round disks which are gears made of the ferromagnetic material, the direction changing sensor can simultaneously finish the conversion and measurement of the direction changing torque and the direction changing angle, has simple structure and is convenient for operation.

The invention relates to a stirring device of an ice cream machine. The stirring device comprises a stirring shaft and a stirring blade fixed on the outer surface of the stirring shaft, wherein the stirring blade comprises two groups of flaky blades arranged along the axial direction of the stirring shaft and a stripe blade arranged at the tail end of the stirring shaft. The stirring device further comprises a scraper assembly arranged between the two groups of flaky blades, wherein the scraper assembly comprises a first mounting seat and a scraper arranged on the first mounting seat, and the scraper is in pinned connection with the first mounting seat; in the limited range of the first mounting seat, the scraper slides in a way of contacting the first mounting seat and rotates by taking the back of the scraper as a shaft. By using the stirring device of the ice cream machine, delivery and scraping of slurry can be completed independently, the position of the scraper can be adjusted according to the clearance between the stirring device and the wall of a stirring cylinder so that the scraper can be clung to the inner wall of the cylinder and scrape all slurry, and therefore, a series of problems caused by the clearance between the stirring device and the inner wall of the cylinder are overcome, and the stirring device has the effects of being good in scraping effect, strong in thrust and convenient for changing the scraper.

The invention discloses a fixed-length cutting device for a stainless steel tube. The fixed-length cutting device for a stainless steel tube comprises a cutting platform and a cutting head group, andfurther comprises a length determining assembly and a clamping assembly; the left side end of the cutting platform is provided with an opening groove, a cutting panel is arranged in the opening groove, and a material collecting box is arranged under the cutting panel; and the length determining assembly comprises a fixed side plate, positioning screws and a positioning pressing plate, the fixed side plate is located over the left end of the opening groove and fixedly connected with the top face of the cutting platform, the positioning screws are symmetrically arranged on the front side and theback side of the fixed side plate, and the two ends of the positioning pressing plates are arranged on the two positioning screws in a sleeving mode separately. According to the fixed-length cuttingdevice for the stainless steel tube, the structure is simple, the practicability is high, operation is easy, use is convenient, not only can the cutting rate and the cutting precision of the stainlesssteel tube be improved, but also the cutting length standard can be guaranteed every time only through one time of cutting length measurement, the manual labor intensity is effectively reduced, the error rate brought by each time of manual measurement is decreased, and resources and the cost are saved.