14results about How to "Affect measurement accuracy" patented technology

The utility model relates to the technical field of compaction degree measurement, in particular to a roadbed compaction degree measuring device which comprises a frame, a first motor, an electric cylinder and a second motor, wheels are movably connected to the surface of the frame, a handle is fixedly connected to the surface of the frame, and a limiting groove is formed in the surface of the frame. Through the connection of the rack and the pull rope and the connection of the pull rope and the impact hammer, the supporting of the action position of the impact hammer on the frame is realized, and under the action of the storage bin, the measurement operation range and the performance of equipment are improved while the road surface is not damaged by filling gravel in the impact hammer and changing the action weight of the impact hammer; and under the connection of the impact hammer and the limiting plate, through the connection of the limiting plate and the sliding block and the sliding connection of the sliding block and the sliding groove, the effect of limiting and supporting the action angle when the impact hammer freely falls is achieved, and the impact hammer and the limiting cylinder are prevented from colliding to influence the measurement precision of the roadbed compactness.

The present invention discloses an ultrasonic gas meter module and an ultrasonic flowmeter using the gas meter module. The ultrasonic gas meter module includes: a flow channel upper shell, an air inlet guide structure, an air outlet guide structure, a transducer fixing frame, a transducer fixing cover plate, and a flow channel lower shell connected to the shell substrate of the flow channel upper shell. The air outlet end of the flow channel body and the air outlet guide structure, the transducer fixing frame and the connected transducer fixing cover plate are located in the inner cavity of the flow channel shell. The top wall of the flow channel shell is provided with an air outlet pipe connected to the inner cavity of the flow channel shell. The ultrasonic flowmeter includes: a gas meter shell, an air inlet valve arranged at the air inlet of the gas meter shell, and the aforementioned ultrasonic gas meter module horizontally installed in the gas meter shell; the flow channel shell divides the chamber in the gas meter shell into an air inlet cavity outside the flow channel shell and an air outlet cavity inside the flow channel shell. The ultrasonic gas meter module has a simple structure, convenient loading and unloading of each structure, stable assembly, and can be applied to ultrasonic gas meters of various specifications.

The invention relates to the technical field of detection, and provides aluminum alloy B-type cabin intermediate product precision detection equipment which comprises an operation table, a detection mechanism, a dust removal mechanism, a cleaning mechanism and a drying mechanism. The left side of the upper end of the operation table is fixedly connected with the detection mechanism, and the right side of the operation table is fixedly connected with the dust removal mechanism; the right end of the rear side of the operation table is fixedly connected with a cleaning mechanism, the left end of the rear side of the operation table is fixedly connected with a drying mechanism, and arc-shaped T-shaped transverse baffles are evenly distributed at the upper end of the operation table. Through the cooperation of the operation table and the detection mechanism, the precision of automatically and continuously detecting the arc-shaped T-shaped transverse baffle is achieved, the arc-shaped T-shaped transverse baffle needing to be detected only needs to be manually placed at the upper end of the arc-shaped clamping base at the right end of the front side, then the detected arc-shaped T-shaped transverse baffle is taken down from the upper end of the arc-shaped clamping base at the left end of the front side, and the detection efficiency is greatly improved. The difficulty of precision detection is reduced, the detection precision is high, and the efficiency is high.

The application provides a downhole optical fiber fixing device and a mounting method thereof. The optical fiber is fixed in the downhole through an outer pipe during well drilling. The outer pipe of the device is in contact with the well wall through a fixing part and a supporting part, so that the optical fiber is effectively protected from being damaged in the later carbon dioxide injection process. The device can fix the optical fiber at the central part outside the downhole casing, so as to prevent the optical fiber from being too close to the downhole casing or the outer well wall and forming measurement error, and affecting the measurement accuracy of the instrument. The included angle between the supporting part and the fixing part is adjustable, so that the downhole operation of different diameters can be met. Meanwhile, the fixing part and the outer pipe are detachably connected, so that the installation and the later disassembly are facilitated.

The present disclosure provides an opening and closing radar protection device, comprising a mounting frame, a protective cover, a driving device and a guide device, the driving device and the guide device are arranged on the mounting frame, one end of the guide device is connected with the protective cover, the other end of the guide device is connected with the driving device, the driving device is used for driving the guide device to move so that the protective cover rotates at the opening end of the mounting frame; the protective cover is used for closing the opening end of the mounting frame. The present disclosure also provides a material level measuring system. The present disclosure sets an opening and closing protection device to protect the scanning radar, reduces the influence of dust and other impurities on the use of the scanning radar, and improves the service life of the scanning radar and the measuring accuracy of the system.

The present invention provides a method, device and storage medium for feedback of position change of an RTK base station, wherein the RTK base station continuously receives satellite signals and obtains observation data according to the satellite signals; the observation data received within the specified observation time is uploaded to a designated online precise single-point positioning server, and the single-point positioning information of the RTK base station is downloaded from the online precise single-point positioning server; the position of the RTK base station is judged to be changed according to the single-point positioning information of the RTK base station, and if changed, the change information is sent to the designated management personnel terminal. The basic data uploaded by the present invention is more accurate, the single-point positioning information of the RTK base station is obtained by solving the online precise single-point positioning server, the single-point positioning information of the RTK base station is used to judge whether the RTK position has changed, and the management personnel can be notified in time, so as to obtain accurate feedback when the spatial position of the RTK base station changes abnormally, so as to avoid affecting the user's measurement accuracy and delaying the measurement work due to the change of the base station position.

The utility model discloses a level gauge for land surveying and mapping, which comprises a level gauge main body, an objective lens assembly is arranged on one side of the level gauge main body, an auxiliary assembly is arranged on the lower side of the objective lens assembly, the objective lens assembly comprises an objective lens barrel and a mounting cover, the objective lens barrel is arranged on the level gauge main body, and the mounting cover is arranged on the outer side of the objective lens barrel. According to the utility model, when the objective lens is replaced, the baffle plate can be inserted into the insertion hole, so that the baffle plate is utilized to seal the opening of the objective lens barrel, and the objective lens can be conveniently replaced. And dust in the external environment is prevented from penetrating through the objective lens cone to enter the level gauge to influence the measurement precision of the level gauge in the process of replacing the objective lens.

The invention relates to the technical field of clip-on ammeters, in particular to a clip-on ammeter for residual current detection, which comprises a residual current handheld meter body and a residual current sensor, and a connecting wire is arranged between the residual current handheld meter body and the residual current sensor. The structure of a fixed annular jaw and the structure of a movable annular jaw are optimally designed, a jaw closing mechanism is integrated at the closed position of the end of the jaw and combined with a negative pressure attaching assembly, it is ensured that the jaws are completely and tightly attached when closed, and the problems that tiny gaps exist, consequently, a magnetic circuit is incomplete, and the uniformity and measurement precision of a magnetic field are affected are solved; and the annular protective cover plate is matched with the inner side tong head magnetic core mechanism, so that gap compensation at the magnetic core mounting cavities on the inner sides of the fixed annular jaw and the movable annular jaw is met, mounting protection of the magnetic core assembly can be achieved, and auxiliary heat dissipation of the magnetic core assembly in the working state can be assisted.

The present invention discloses a through-type wheelset detection device and a wheelset detection method, belonging to the field of vehicle engineering technology. A through-type wheelset detection device comprises: a first outer mounting box, a first inner mounting box, a second inner mounting box and a second outer mounting box which are sequentially arranged in a spaced relationship along the track transversely; a first high-speed 2D digital laser sensor and a second high-speed 2D digital laser sensor are arranged in the first outer mounting box, a third high-speed 2D digital laser sensor is arranged in the first inner mounting box, a fourth high-speed 2D digital laser sensor is arranged in the second inner mounting box, and a fifth high-speed 2D digital laser sensor and a sixth high-speed 2D digital laser sensor are arranged in the second outer mounting box. The present invention can accurately obtain the center coordinates and radius of the wheel, the wheel shape parameters and the inner distance of the wheelset through simple measurement and calculation, and has a simple overall structure, reliable principle and high calculation accuracy.

The utility model relates to the technical field of test clamps, and discloses a magnetic type fixed multifunctional test clamp, which comprises a test clamp, one side of the top end of the test clamp is provided with a placing groove, one side of the placing groove is communicated with a detection groove, the other side of the detection groove is communicated with a material groove, and the test clamp is provided with a positioning mechanism. According to the technical scheme, materials needing to be detected are concentrated in the transparent rectangular box by an operator and placed in the material groove to correspond to the transmitting end of the photometer, the operator needs to extrude the abutting block before the materials are placed in the material groove, so that the spring connected with the outer wall of the abutting rod in a sleeving mode is in a compressed state, and after the material box is placed in the material groove, the abutting block is pressed. An operator loosens the abutting block, the abutting block is extruded on the side wall of the material box through the extrusion force of the spring on the outer wall of the abutting rod, one end of the material box is firmly extruded on the side wall of the material groove, it is guaranteed that materials can be kept stable and firm when the photometer detects the materials in the material box, and the photometer is practical and suitable for wide application and popularization.

The utility model relates to the technical field of engineering construction detection, in particular to a mobile inclinometer, which comprises an inclinometry probe rod and an acquisition host, a controller, a tilt angle sensor, a lithium battery and a wireless communication module are arranged in the inclinometry probe rod, and the tilt angle sensor, the lithium battery and the wireless communication module are connected with the controller. The wireless communication module is used for establishing communication connection between the collecting host and the inclination measuring probe rod, a cable is detachably connected to the upper end of the inclination measuring probe rod, two guide wheel sets are arranged on the inclination measuring probe rod, two mud scraping assemblies are symmetrically arranged on the side wall of the lower end of the inclination measuring probe rod, and the mud scraping assemblies are arranged on the side wall of the lower end of the inclination measuring probe rod. The mud scraping assembly is located below the guide wheel set at the lower end and vertically corresponds to the guide wheel set, the end, away from the inclinometry probe rod, of the mud scraping assembly is matched with a guide groove of an inclinometry guide pipe, and a damping assembly is arranged at the lower end of the inclinometry probe rod. According to the utility model, the wireless communication module, the mud scraping assembly and the damping assembly are arranged, so that the measurement precision of the inclinometry probe rod can be effectively ensured.

The utility model discloses a kind of tool for measuring the runout of rotating parts, related to detection equipment field.The tool for measuring the runout of rotating parts, including test tool support, the test tool support is connected with equipment to be measured, multiple laser sensors are installed on the test tool support, the driving end of the equipment to be measured is connected with rotating part, and multiple the laser sensors are outside rotating part.The tool for measuring the runout of rotating parts, by test tool support, laser sensor is fixed on gearbox housing, the runout of rotating part can be measured in real time in the whole vehicle operation process.Test data can be directly corresponding with whole vehicle operation state signal, accurately reflect the runout characteristics of part under actual working condition, solve the problem that static measurement is disjointed with whole vehicle actual state.

The utility model discloses a magnetic railing ruler reading head testing device, which belongs to the technical field of reading head testing, and comprises a base, the upper surface of the base is fixedly connected with a side plate, the side surface of the side plate is fixedly connected with a guide rod, the side surface of the guide rod is slidably connected with a sleeve, the lower surface of the sleeve is fixedly connected with a mounting block, and the mounting block is fixedly connected with the side plate. And the side surface of the mounting block is movably connected with a mounting shaft. The clamping semi-ring is far away from the positioning column by rotating the inclined rod, the reading head is convenient to mount and dismount, and the inclined rod can drive the L-shaped plate to reciprocate back and forth in the rotating process, so that the wiping block can wipe the surface of the reading head, and dust on the surface of the reading head is prevented from affecting the measurement precision of the reading head; and the rotating roller enables the sleeve not to be in direct contact with the base when the sleeve moves on the guide rod, the rotating roller can rotate when the sleeve moves to enable the sleeve to move smoothly, surface abrasion is avoided, the rotating roller can be taken down for replacement, and the service life of the device is prolonged.

This utility model discloses an online monitoring device for marine methanol consumption, including a turbine flow meter body. A first flange is mounted on the surface of the turbine flow meter body. A second flange is threadedly connected to the surface of the first flange using a bolt assembly. A filter tube is connected to the surface of the second flange. A third flange is connected to the other side of the filter tube. A limiting groove is formed on the inlet end surface of the third flange. A limiting post is connected to the surface of the limiting groove. A rubber block bonded to the inner wall of a connecting lug is engaged with the surface of the limiting post. The surface of the connecting lug is fitted into the surface of the limiting groove and is connected to the inlet end surface of the filter screen cylinder. This utility model, through the cooperation of the filter tube installed on one side of the inlet end of the turbine flow meter body and the filter screen cylinder engaged within the filter tube, intercepts large particulate impurities in methanol, preventing them from directly entering the turbine flow meter body, causing wear, and thus affecting the methanol measurement accuracy.