279results about How to "The installation structure is stable" patented technology

The invention discloses an attitude standard deviation estimation and correction method of a star sensor and a payload. The attitude standard deviation estimation and correction method comprises the following steps of 1, according to payload characteristics, determining a location formula of an incident light vector of a payload and building a payload error model with payload standard deviation, 2, according to star sensor characteristics, building a star sensor error model with star sensor standard deviation, 3, through the payload, determining measured deviation by observation data of a known target and corresponding star sensor measured data, and building a payload and star sensor standard deviation measurement equation according to the measured deviation, the payload standard deviation and the star sensor standard deviation, 4, carrying out estimation of the star sensor or payload standard deviation according to the payload and star sensor standard deviation measurement equation, and 5, correcting the star sensor or payload measured data by the estimated standard deviation. The attitude standard deviation estimation and correction method can reduce star sensor and imaging payload attitude standard deviation and improve imaging quality and an image positioning precision.

The invention discloses a stone floor surface construction method, and belongs to the field of building construction. According to the technical scheme, the method comprises the following steps: performing construction preparation, cleaning the base course, elevation locating, snapping line, performing trial splicing and trial arrangement, paving leveling course mortar, paving stone panels, pouring cracks, wiping joints, maintaining, sticking skirting boards, waxing, and performing effective construction on the stone floor surface. The construction scheme is effectively improved, and the method has the advantages of improving the overall connection effect and prolonging the service life.

The invention relates to a cam controller with mechanical limit, forced disconnection and dynamic monitoring functions. The cam controller comprises a cam shaft; cam assemblies are arranged on the cam shaft; a pressure spring is arranged between adjacent cam assemblies; each cam assembly comprises a shaft housing, an external cam sheet and an internal cam sheet; each group of the cam assemblies is correspondingly provided with a switch; the cam controller is characterized in that in at least two groups of cam assemblies, the internal sides of two end surface gear rings of the internal cam sheet are provided with a first limit device and a second limit device; the internal side of the end surface gear ring of the external cam sheet is provided with a third limit device capable of rotating relative to the first limit device; and the internal side of the end surface gear ring of the shaft housing is provided with a fourth limit device capable of rotating relative to the second limit device; a code disc is arranged on the cam shaft; a photoelectric sensor is arranged at one side of the code disc; and at least two switches are quick action switches. The cam controller provided by the invention limits the rotary angle of the cam, and can dynamically monitor the movement state of the cam, so as to realize forced disconnection.

There is provided an accessory mounting device for a saddle riding type vehicle. An accessory mounting device for mounting a navigation device on a fuel tank comprises a base body on which the navigation device is mounted, and permanent magnets caused to stick to the fuel tank and thus allowing the base body to be mounted thereon. The permanent magnets are provided on the base body via spherical joints. In this sense, the permanent magnets are caused to stick to the fuel tank in a manner such that directions thereof are changed depending on a shape of the fuel tank, thus obtaining a stable mounting structure. Further, since there is no need to provide flexible members around the permanent magnets, an excellent durability is achieved. Furthermore, the base body comprises a bracket for holding the car navigation device, and an angle of the bracket can be adjusted.

The invention provides a mounting structure for an automobile door lock, and belongs to the technical field of automobiles. The mounting structure solves the problems that a door handle and door lock pull wires of an automobile cannot be assembled easily and time and labor are consumed in the prior art. The mounting structure for the automobile door lock comprises door lock pull wires, a door handle, a fixed base and a door guard board which is mounted on an automobile body. The door guard board is provided with a mounting cavity, the door handle is located on one side of the door guard board and hinged to the door guard board, and the other side, facing the door guard board, of the mounting cavity is opened. The fixed base is arranged in the mounting cavity, and the fixed base is provided with sliding columns in a sliding mode. The door handle is fixedly connected with a shifting piece which can drive the sliding columns to slide on the fixed base when the door handle is pulled, and one end of each door lock pull wire is connected to the corresponding sliding column. The mounting structure for the automobile door lock has the advantage of being convenient and fast to mount.

The invention discloses a modularized electric field for a VOC (Volatile Organic Compound) treatment device. The modularized electric field comprises two negative plates which are arranged oppositely on left and right sides, wherein at least one negative barrel is vertically fixed between the two negative plates; the negative plates are provided with openings at positions over against the mouths of the negative barrels; coaxial positive rods are inserted into the negative barrels; at least one coaxial circular positive sheet is arranged on each positive rod in a sleeving way; gaps are reserved between the outer circle of each positive sheet and the inner walls of the negative barrels; short linings are arranged between adjacent positive sheets in a cushioning way; long linings and inner nuts are arranged on the positive sheets on the outermost side in a press fitting way; a positive plate is arranged on the outer side of each negative plate; the two ends of the positive rods pass through corresponding positive plates and are locked through outer nuts; an insulating column is arranged between each negative plate and the positive plate on the outer side of each negative plate in a cushioning way. By adopting the modularized electric field for the VOC treatment device, a formed electric field has higher and more uniform strength.

An installation structure for the impeller of turbine compressor features that the hub of vane wheel has multiple fins formed on its external circumference, a join hole with a projected part on its bottom and the first join part on its inner surface, and the motor shaft has a join axle on its end face for inserting it in said hole, which has a slot on its end face for matching with said projected part and the second join part on its external circumference for matching with the first join part. Its advantages are reliable joint and easy assembling.

The invention discloses a building stone hanger, comprising a stone plate, a retainer, a connector and a mounting plate; a back bolt is arranged in the retainer and passed through the retainer into the stone plate, two ends of the retainer are provided with horizontally downward protrusions respectively, one side of the connector close to the retainer is provided with two L-section blocks, the blocks are in clamped connection with the protrusions, a through hole is arranged in the connector, the mounting plate is arranged at the outer side of the connector, the section of the mounting plate is L-shaped, a toothed plate is welded to the top of the connector, the mounting plate is provided with straight teeth corresponding to the toothed plate, an anchor bolt is passed through the toothed plate and the mounting plate, the surface of the stone plate is provided with semicircular cavities, and the outer side of the stone plate is coated with a polyvinyl chloride coating. The building stone hanger has firm structure, the surface of stone is resistant to corrosion, and the building stone hanger is convenient to assemble.

The invention discloses a key lifting switching device, which comprises a keycap, a telescopic assembly, a switching mechanism and a pair of frames. The key cap is positioned above a bearing plate; the switching mechanism opens and closes a key signal corresponding to the lifting and descending motions of the keycap; the pair of frames is not contacted with each other and is oppositely arranged and provided with cavities; the corresponding bottom edges of the both frames can be arranged in first and second chute assemblies on both sides of the bearing plate in a sliding mode respectively, and the corresponding tops of the both frames are pivoted with first and second pivoting assemblies on both sides of a symmetry axis at the bottom of the keycap; synchronization sliding components for causing the pair of frames to synchronously lift and descend are arranged by passing through the cavities of the pair of frames; the bottom edges of the synchronization sliding components are pivoted in a third chute assembly on the bearing plate; the top edges of the synchronization sliding components are pivoted in a third pivoting assembly at the bottom of the keycap; and the bottom edges and the top edges of the synchronization sliding components are parallel to arm components of the two frames. The invention simplifies the structure of the key lifting switching device and improves the assembly clamp and the assembly process so as to further improve the production efficiency of the keyboard and the qualification rate of the finished product.

The invention relates to the technical field of repairing equipments for hydraulic engineering canal slopes, in particular to an upright counterweight lightweight mobile cofferdam. The upright counterweight lightweight mobile cofferdam comprises a main frame and a water retaining panel, wherein a support plate is fixed between a cross beam and a side beam, studs are vertically mounted on the support plate and respectively extend outwardly, counterweight clamping slots are formed in adjacent studs, a plurality of independent counterweight blocks are hung in each counterweight clamping slot, positioning columns are arranged on two sides of each counterweight block, sliding vertical grooves are formed in both sides of each counterweight clamping slot, a limit groove is formed in the side wall, close to the water retaining panel, in each sliding vertical groove, the positioning columns can slide down along the sliding vertical grooves and are clamped in the limit grooves, bolt holes are formed on the front sides of the counterweight clamping slots, and the inner ends of fixes bolts penetrate through the bolt holes to be propped against the counterweight blocks; the rear vertical surface of the main frame and the outer lateral side of a side frame are wading walls, light water retaining panels are mounted on the wading walls, the inner sides of the water retaining panels surround waterproof working cavities, and skirt-type waterproof rubber pads are mounted on the lower edges of the water retaining panels. The upright counterweight lightweight mobile cofferdam disclosed by the invention can be quickly mounted and disassembled, is adjustable in weight of counterweight bodies and can adapt to various working conditions.

The present invention discloses a support fitting of double tubular bus bars, and relates to the convertor station direct current field fitting technology field. The objective of the invention is to solve the problems that the connection between the tubular bus bar on a direct current transformer station and a tubular bus bar on a capacitor tower is complex in operation and the connection structure is unstable so that the accidents easily happen. The support fitting comprises a support frame a first tubular bus bar hoop and a second tubular bus bar hoop, the central axis of the first tubular bus bar hoop is horizontally arranged, the first tubular bus bar hoop is slidingly connected with the support frame along the extension direction of the central axis itself, the central axis of the second tubular bus bar hoop is vertically arranged, and the second tubular bus bar hoop is hinged on the support frame through a hinging structure. The support fitting of double tubular bus bars is configured for the converter station direct current field.

The invention relates to a filter cloth fixing structure based on a pressing ring and a filter plate system using the filter cloth fixing structure. The filter cloth fixing structure based on the pressing ring comprises a press filter plate body and an installation groove, and a through hole is formed in the middle of the press filter plate body. The installation groove is formed in the press filter plate body in a surrounding mode and comprises an outer edge groove body and an inner edge groove body, the outer edge groove body is formed in the outer edge side of the press filter plate body in a surrounding mode, and the inner edge groove body is formed in the inner edge side of the press filter plate body and is close to the through hole. The installation groove comprises a fixing cavity and a transition cavity, wherein the section width of the fixing cavity is larger than that of the transition cavity, the fixing cavity is formed in the inner side of the installation groove, and the transition cavity is formed in the outer side of the installation groove. By means of the filter cloth fixing structure based on the pressing ring, the stability in the filter cloth installation process is greatly improved, and the phenomenon that filter cloth is likely to loosen due to long-term use is avoided; meanwhile, the filter cloth is convenient to replace, the maintenance cost is low, and the working efficiency of equipment is improved.

The invention discloses a circulating water purification system and method applicable to lakes. The system comprises a water purification device and ecological floating plates, wherein a connecting device is arranged between every two ecological floating plates; the water purification device comprises a base and a water purification chamber; the water purification chamber is arranged on the base; and the water purification chamber is sequentially provided with a filtering and flocculating chamber, a negative oxyanion electrolysis release chamber, a membrane bioreaction chamber and an oxygen aeration chamber which are sequentially arranged from left to right. The method comprises the following steps: (a) preparing for construction; (b) constructing a temporary cofferdam; (c) pumping water in the construction area; (d) building the water purification device; (e) installing the ecological floating plates; (f) installing a water supply device; and (g) carrying out water conditioning. The system is simple, feasible, scientific and convenient, has the advantages of environment friendliness, no pollution, low cost and high efficiency, and can implement accurate control. The treated lake water is clean and pollution-free. The system well solves the problem of lake water pollution.

The invention discloses an antenna and an elastic support element thereof. The elastic support element comprises a base, an elastic arm and a support frame, wherein the elastic arm comprises a straight arm segment and a cantilever segment; the straight arm segment obliquely extends upwards from the base; the cantilever segment extends towards the direction far away from the straight arm segment from the top end of the straight arm segment in an arc bending manner; and the support frame is arranged between the base and the elastic arm and is provided with a bearing part which is propped againstthe straight arm segment and/or the cantilever segment to support the elastic arm when the elastic arm elastically deforms towards the direction in which the support frame is located under external pressure. According to the elastic support element, a sectional design is adopted by the elastic arm, so that the flexibility is high; the support frame is provided with the bearing part correspondingto the elastic arm, so that the support effect is good; and the buffer capacity of the elastic support element on impact of external force is high through coordination of the support frame and the bearing part.

The invention discloses a storage device of a refrigerator. The storage device of the refrigerator comprises a storage box and a mounting frame, the top of the storage box is provided with a fetch opening, the mounting frame is arranged on the inner side of a refrigerator door and provided with a storage cavity, the storage box and a supporting part used for bearing the storage box are arranged in the storage cavity, the supporting part comprises a first end and a second end, the first end is hinged to the wall of the storage cavity, the second end is capable of turning around the first end to get in and out of the storage cavity, and the storage cavity is provided with a first clamping position for clamping the second end of the supporting part. The storage box and the supporting part are in detachable connection so as to fix the storage box into the storage cavity when the second end of the supporting part is clamped at the first clamping position. The invention further discloses a refrigerator. The storage box of the refrigerator is steady in mounting structure and convenient to turn over to make it pretty convenient for article storing and fetching.

The invention discloses a wall decoration board mounting structure which aims to overcome the defects that wall decoration boards are not stable in dry hanging installation, low in strength and inconvenient to replace. The wall decoration board mounting structure comprises a mounting keel connected to a wall in a fastened mode and wall decoration boards connected to the mounting keel, wherein the mounting keel comprises top and bottom keels and a plurality of vertical keels, the vertical keels are connected between the two top and bottom keels located on the upper portion and the lower portion at intervals, the vertical keels are of a U-shaped structure opening to the wall, a plurality of inserting holes are formed in the outer surfaces of the bottoms of the U-shaped vertical keels, mounting clamping strips are connected to the edges of the left side and the right side of the surface, facing the mounting keel, of each wall decoration board and are provided with a plurality of buckles, the buckles penetrate through the inserting hole and are connected with elastic clamping seats in a clamped mode, and the elastic clamping seats are arranged in the vertical keels. According to the wall decoration board mounting structure, the wall decoration boards are firm in structure, high in strength and convenient to detach and replace in dry-hanging mounting.