38results about How to "Simple and stable structure" patented technology

The invention discloses a drilling device for geotechnical engineering investigation, relates to the technical field of geotechnical construction, and mainly aims to solve the problem that the depth of drilling rock and soil is not prone to being controlled. The drilling device comprises a fixing frame, a drill pipe and a lifting mechanism for driving a drill bit to drill, the fixing frame is composed of three supporting vertical rods in triangular distribution and side connecting rods allowing the three supporting vertical rods to be connected and fixed to one another, a fixing table plate and an installation frame are arranged on the upper sides of the side connecting rods, the lifting mechanism comprises a screw and a drilling motor, an adjusting screw is further arranged on the installation frame, an installation plate is arranged on the adjusting screw, a pressure sensor is arranged at the upper end of the installation plate, a pressing plate is arranged on the bottom wall of theadjusting screw, and the edge side of the installation plate is slidably connected to the rod wall of the installation frame. According to the drilling device for geotechnical engineering investigation, the structure is simple, stable and firm, the drilling depth can be adjusted and accurately controlled, the simpleness, convenience and rapidness are achieved, disassembly can be achieved, carryingis convenient, and the practicability is high.

The invention relates to a manufacturing method for an all-fiber temperature sensor based on fiber core mismatch attenuators, and belongs to the technical field of manufacture of optical fiber sensors. The method includes the steps that an optical fiber fusion splicer discharges electricity twice so as to conduct fusion splicing on single-mode optical fibers placed in a staggered mode, the two fiber core mismatch attenuators are formed, and then a new sensing structure is formed through processing of the optical fiber fusion splicer and an optical fiber tapering machine. Optical path differences meeting conditions can be generated through the fusion splicing structure and optical fibers, and the Mach-Zehnder interference condition is met. When external temperature, the refractive index and other conditions change, the effective optical path differences of the sensing part optical fibers change, and then a through transmission spectrum drifts. The whole structure of the sensor is easy to manufacture, and the mechanical strength and sensitivity are high; the single-mode optical fibers are adopted, cost is reduced, the influence of cross sensitivity of a traditional optical fiber sensor is avoided, accuracy is improved, and the detection result has good repeatability.

The invention relates to a railway industry and electricity integrated electric switch device with a central locking polar integrated control unit. A high-strength anti-retreating moving lock mechanism, an integrated visible lock checking expression mechanism, a closed oil immersion overload unloading double speed transmission mechanism, a double speed, rapid stopping and high-efficiency permanent magnet direct-current motor and the like are integrated to form a compact non-squeezable central locking electric switch machine, wherein the high-strength anti-retreating moving lock mechanism is composed of a ball iron box seat/a heavy-duty bearing/an upper rack moving lock rod/a short and thick tooth crest lock; a lock checking rod/a direct-acting contact expression switch/a four-head lock checking block/a spiral starting disk/an axial quick-acting ring which are flatly placed and connected by body separation form the integrated visible lock checking expression mechanism; the closed oil immersion overload unloading double speed transmission mechanism integrates a 2K-H displacement and variable level differential transmission shaft with multiple tooth differences and short teeth, a stopping output wheel shaft with an eccentric bushing hammer; the compact central locking electric switch machine which can not be squeezed, a lengthened rail brace slide plate ( base rail/ switch tie) central multi-lug insulation hinge, a crank and straight linked arm and a linked switch rail and point rail form an industry and electricity integrated squeezable and non-squeezable unit by means of a zero-clearance sleeved elasticity group pin and a double-port microgap hinge, low speed turnout unitization of single opening and single action, double slip separated action, hump double action and the like is achieved, a intermediate speed and high speed turnout switch rail and a point rail are synchronous in sections and combined with combination unitization to form the safe, reliable, advanced, adjustment-free, protection-free and industry and electricity assembled power-driven turnout of the whole transmission and whole spreading central locking electrode control device.

The invention discloses a cylinder cover system capable of adjusting the compression ratio for an engine. The cylinder cover system comprises a main cylinder cover, a movable cylinder cover, an air inlet valve, an air exhausting valve and an acting part, wherein the main cylinder cover is connected with a piston cylinder body and provided with an air inlet passage and an air exhausting passage; the movable cylinder cover is arranged in the main cylinder cover and provided with a secondary air inlet passage and a second air exhausting passage corresponding to the air inlet passage; the space between the movable cylinder cover and a piston in the piston cylinder body is a combustion chamber; the air inlet valve and the air exhausting valve are arranged in the movable cylinder cover and used for sealing or opening the secondary air inlet passage or the secondary air exhausting passage; the acting part is connected with the movable cylinder cover and acts to drive the movable cylinder cover to move vertically. The compression ratio can be changed without moving the whole cylinder cover, and an original air distribution system does not need to be changed.

The invention relates to a conjoined frame, which comprises an outer frame and an inner panel, wherein the outer frame is provided with a central through hole and peripheral side surfaces around the central through hole; the inner panel is provided with at least one penetrating hole which is arranged at intervals; the inner panel is in clamped connection to the peripheral side surfaces; and the penetrating holes are exposed through the central through hole. Preferably, clamping claws are arranged at the inner sides of the peripheral side surfaces, and the side surface of the inner panel is provided with fasteners which are in clamped connection with the clamping claws. Guide tongues are arranged at the inner sides of the peripheral side surfaces towards the direction of the inner panel, the side surface of the inner panel is provided with reinforcing bars which are bent to extend towards the direction of the central through hole, and the reinforcing bars are inserted between the inner sides of the peripheral side surfaces and the guide tongues and the guide tongues supports against the inner panel. The supporting ribs are arranged at the inner sides of the peripheral side surfaces and support against the inner panel. At least part of the edge of each penetrating hole is provided with a clamped connection surface. The circumference of each penetrating hole is provided with positioning holes. The conjoined frame disclosed by the invention has the advantages of smart design, concise structure, stability, firmness, reduced production cost, wide application scope and suitability for large-scale popularization and application.

The invention discloses a spectral measurement device based on a reflective random diffraction sheet and a test method. The spectral measurement device comprises the reflective random diffraction sheet, a collimation focusing element and an optical detector, wherein the reflective random diffraction sheet comprises a substrate and a diffraction grating unit plated with a reflective film; the collimation focusing element is located at one side of the reflective random diffraction sheet, incident light passes through the collimation focusing element to become parallel light, the parallel light illuminates the reflective random diffraction sheet and is reflected by the reflective random diffraction sheet to obtain zero-level diffracted light and first-level diffracted light, the zero-level light is converged after passing through the collimation focusing element, and the first-level diffracted light forms a speckle pattern after passing through the collimation focusing element; and the optical detector is located at the side, away from the reflective random diffraction sheet, of the collimation focusing element and is used for receiving the speckle pattern. The device is high in spectral resolution, high in light energy utilization rate, compact in structure and small in size.