222results about How to "Affect accuracy" patented technology

The invention relates to the technical field of lens polishing, in particular to a polishing device for optical lens production. Comprising a workbench, the workbench is provided with two driving arms which are distributed up and down, and the driving arms are fixedly connected with polishing discs; and the rotating disc is rotationally connected to the workbench, the rotating disc is slidably connected with a plurality of clamping rods distributed in the circumferential direction, a second motor is installed on the workbench, and the rotating disc and an output shaft of the second motor are in transmission through a second transmission piece. According to the lens polishing device, lenses of different sizes are clamped through the clamping rods distributed in the circumferential direction, the existing mode that the lenses are fixed through glue is changed, the two polishing discs are used for polishing the upper sides and the lower sides of the lenses at the same time, the lens polishing efficiency is improved, and meanwhile the phenomenon that after one face of each lens is polished, glue residues exist on the other face is avoided; therefore, the precision of the lens in use is influenced.

The invention is applicable to the technical field of motor imagery classification, and provides a motor imagery classification method, device and equipment based on multi-view characteristics and a medium, the method comprises the following steps: performing group frequency spectrum filtering on an original electroencephalogram signal through a preset filter to obtain the multi-view characteristics of the original electroencephalogram signal; performing time domain convolution processing on the multi-view features to obtain multi-scale time information of the original electroencephalogram signal, and adding the multi-scale time information and the multi-view features to obtain combined features; dividing the combined features into a time window set according to a time dimension, wherein time windows in the time window set are not overlapped with each other; extracting a target time feature in each time window, and extracting a global dependency relationship of each time window edge time dimension through a Transform module; and completing classification of the motor imagery according to the global dependency relationship.

The utility model provides a probe cleaning device and wafer acceptance test equipment. The probe cleaning device comprises a gas inlet piece and a gas guide piece, and the gas inlet piece is used for providing cleaning gas; the air guide part is arranged above the probe card, an air inlet end of the air guide part is communicated with the air inlet part, an air guide channel is arranged in the air guide part and comprises a plurality of air outlet ends arranged at the bottom end part of the air guide part, and the air outlet ends correspond to tips of a plurality of probes in the probe card one to one; therefore, the clean gas sprayed out of the gas guide channel is blown towards the tip of the probe. According to the probe cleaning device, the tip of each probe can be independently purged, the cleaning efficiency and the cleaning effect of the probes are effectively improved, the probe card does not need to be disassembled, the effect of cleaning the probes in real time in the testing process is achieved, probe burning caused by short circuit of the tips of the probes can be effectively avoided, and the testing efficiency is improved. And meanwhile, the influence on the accuracy of a test result caused by contact resistance increase due to accumulation of metal scraps is avoided.

The utility model discloses a plate cutting machine with a deburring function, which relates to the field of plate cutting and comprises a support, a conveying belt is arranged at the top end of the support, a clamping device is arranged on one side of the top of the conveying belt, and a baffle device is arranged on one side of the top of the conveying belt. A noise reduction box connected with the support is arranged on one side of the top of the conveying belt, an electric box fixing plate is arranged on one side of the noise reduction box, a distance adjusting device matched with the noise reduction box is arranged on the top of the electric box fixing plate, and a rotating disc device is arranged at the bottom of the distance adjusting device. A control panel is arranged on one side of the conveying belt. The distance adjusting device and the rotating disc device are arranged, the distance between the rotating disc device and the surface of the conveying belt is adjusted according to the thickness of the acoustic board, and meanwhile the acoustic board is cut, deburred and dedusted through the rotating disc device.

The invention relates to the technical field of environment monitoring, and discloses an expandable environment monitoring system device which comprises a supporting assembly and a meteorological monitoring assembly, the supporting assembly comprises a longitudinal supporting pipe, a rope, a spacing base plate, a longitudinal connector and an end, and the longitudinal supporting pipe, the longitudinal connector and the spacing base plate are sequentially connected from bottom to top to form a support; environmental parameters can be monitored, local or overall high-precision environmental parameter measurement in any size range can be realized, and the implementation is better; the shielding to the environment of the measured target is small, so that the environment information in a certain space is not lost; the multiple trapezoid environment monitoring structures are parallel and can form a plane trapezoid structure or an annular trapezoid structure, rigid fixing and flexible folding of the environment monitoring device are facilitated through the spacing base plates and the end elastic ropes, rapid folding and unfolding can be achieved, the supporting assemblies cannot move through end fixing when the environment monitoring device is unfolded, and the environment monitoring device is convenient to use. Therefore, full-coverage and full-surrounding monitoring of an environment monitoring area is realized.

The utility model discloses a weighing machine, which relates to the technical field of weighing, and comprises a control host, a weighing assembly is arranged on the front surface of the control host, a positioning assembly is arranged at the top of the weighing assembly, an extension assembly is arranged at one end of the positioning assembly, a conveyor is arranged on one side of the weighing assembly, and the conveyor is arranged on the other side of the control host. A second conveyor is arranged on the other side of the weighing assembly, supporting frames are arranged at the bottoms of the conveyor and the second conveyor, and the supporting frames correspond to the bottoms of the weighing assembly. According to the weighing machine provided by the utility model, the positioning of a product conveyed to the weighing platform is realized through the arranged positioning assembly, the second mounting frames and the positioning rods are driven to move on the outer wall of the lead screw through the arranged moving blocks, and the two second mounting frames are arranged in a staggered manner, so that the clamping and positioning of the product are realized in the moving process; and the product is moved to the middle of the weighing platform, so that the accuracy of the weighing data is prevented from being influenced by the position deviation of the product.

The invention relates to the technical field of rock drill testing, in particular to a rock drill connecting rod durability fatigue testing device and a testing method thereof. According to the technical scheme, the rock drill assembly comprises a first rock drill connecting rod, a second rock drill connecting rod is hinged to one side of the first rock drill connecting rod, and a rock drill base is hinged to one side of the second rock drill connecting rod. After the arc-shaped abutting block deflects, the lower surface of the arc-shaped abutting block extrudes the second pressure sensing block, and a worker can fully know the deformation positions of the first connecting rod connecting hole and the second connecting rod connecting hole through a computer; a height difference is generated between the height of the distance detection assembly and the height of the distance detection assembly when the bidirectional detection rod is in a normal state, and the distance detection assembly obtains change data through infrared rays, so that the data change of the change of the connecting position of the connecting rod is known, and the deformation data of the connecting rod under the action of two axial forces is accurately obtained. And the data precision is improved.

A rotary sludge high-efficiency drying device belongs to the field of sludge drying technology. The invention includes a base, a support seat fixedly installed on the top of the base, and a drying cylinder rotatably mounted inside the support seat. A sludge crushing mechanism is installed inside the drying cylinder. A drive seat is slidably mounted on the top of the base, and a feed cover is fixedly connected to the top of the drive seat. A discharge port is rotatably connected to the side wall of the drying cylinder, which, after being rotated and unlocked, is used to discharge the dried sludge. A cone-shaped nozzle periodically pierces and retracts from the sludge blocks located at the bottom of the drying cylinder. This piercing breaks the hard outer shell of the sludge, creating pores and cracks inside the sludge. High-temperature hot air can directly penetrate into the interior of the sludge blocks through these pores and cracks, significantly increasing the heat transfer contact area, improving the moisture evaporation rate in the initial drying stage, and shortening the residence time of the sludge in the drying cylinder, thereby improving the overall drying capacity and efficiency of the equipment.

The corn fruit biological information detection device comprises a bottom plate, a waste liquid collection box and a U-shaped detection seat, a detection cavity is formed in an inner cavity of the U-shaped detection seat, a detection optical fiber is arranged on the inner wall of the detection cavity, and a light source, a spectrograph, a single-mode tail fiber and a multi-mode optical fiber are arranged at the two ends of the detection optical fiber respectively. Side frames are installed at the top ends of the outer walls of the two sides of the U-shaped detection base, a top beam is installed between the adjacent side frames, a controller and a flushing mechanism are arranged on the top beam, the flushing mechanism comprises a U-shaped walking frame, a spray head is installed at the bottom of the U-shaped walking frame, and two sets of tooth-shaped plugging plates are arranged at the bottom of the detection cavity; through the action of the light source, the single-mode tail fiber, the spectrograph, the multimode optical fiber and the detection optical fiber, rapid detection of corn fruit biological information is achieved, rapid washing of the detection cavity after detection is completed is achieved, the situation that residual corn fruit extracting solution affects the accuracy of next-time biological information detection is avoided, and the detection efficiency is improved.

The invention discloses a cold rolling process of an aluminum-based silicon carbide coil material. The cold rolling process comprises the following steps: carrying out surface treatment and coiling on a hot-rolled coil material; after the protective film is removed online, cold rolling-annealing I circulation is conducted, the single-pass rolling reduction of cold rolling is 5%-10%, the unit tension is 10%-30% of the yield strength of the material, the speed is smaller than or equal to 15 m / min, heat preservation is conducted for 1-2 h at the temperature of 430-480 DEG C in annealing I, and the heating and cooling rate is smaller than or equal to 10 DEG C / min; then edge cutting is carried out to remove edge cracks; the heating and cooling rate of the annealing II is smaller than or equal to 8 DEG C / min, and the heat preservation time is shorter than that of the annealing I; performing surface treatment after annealing II; and finally, finished product cold rolling is conducted, the single-pass rolling reduction is 5%-8%, and the speed is 5-10 m / min. By means of optimized multi-pass small rolling reduction rolling, staged temperature control annealing and tension control, the technical problem that the aluminum-based silicon carbide composite material is prone to cracking and strip breakage in the continuous cold rolling process is solved.

The utility model belongs to the technical field of casting devices, and discloses a casting device for launching a fire extinguishing bomb. Comprising a base, a fixing seat, a rotating seat, a first adjusting assembly, a mounting plate, a connecting cylinder, an air storage tank, an air compressor, a battery and an electric valve, the electric valve is mounted in the connecting cylinder, a bottom plate is arranged in a launching cylinder, a placing groove is formed in the top of the bottom plate, and the outer side of the bottom plate is fixedly sleeved with a silica gel ring slidably connected with the launching cylinder; and an adjusting assembly II is connected between the gas storage tank and the mounting plate. The cavity between the launching cylinder and the bottom plate is rapidly expanded through compressed air, the fire extinguishing bomb is thrown, compared with the design of a spring, the throwing cost can be reduced, the first adjusting assembly and the second adjusting assembly are additionally arranged, multi-angle control over the launching cylinder is achieved, the inserting rod is additionally arranged on the base, the inserting rod is inserted into the ground, and the stability of the base is improved; and the influence of recoil force during casting on the accuracy of the casting angle is avoided.

The application discloses a kind of pipeline weld X-ray real-time imaging detection equipment, it is related to pipeline weld detection technical field, including equipment shell, the upper surface of the equipment shell left and right sides are fixedly connected with the positioning cylinder for clamping and limiting pipeline, and the upper surface of equipment shell is fixedly connected with ray emitter, and ray emitter is located between two groups of positioning cylinder, while the emission end of ray emitter is set upwards.The pipeline weld X-ray real-time imaging detection equipment, in the process of placing frame down, placing frame will drive the side limit rod down, limit rod drives gas supply plate to be synchronously lowered in fixed barrel, the volume of chamber above fixed barrel increases at this time, generates negative pressure suction, after the internal pressure of auxiliary box reduces, external air pressure pushes sealing plate to move, sealing plate drives adjusting block to move towards fixed block direction synchronously, and cooperates fixed block to complete the automatic clamping and limiting of imaging film side.

The utility model relates to an adjustable supporting device for automatic welding of a cylindrical shell of a heat exchanger, which comprises two rails laid on the ground, two groups of supporting mechanisms are arranged on the two rails, each group of supporting mechanism comprises a fixed support crossing the two rails, a screw rod is arranged in the fixed support and is perpendicular to the rails, and the fixed support is connected with the screw rod. Two ends of the screw rod are rotatably connected with the fixed bracket, one end of the screw rod is provided with a hand wheel, and two ends of the screw rod are provided with threads with opposite screwing directions; a sliding rail parallel to the lead screw is arranged at the top of the fixed support, two sets of sliding supports are symmetrically installed on the sliding rail and are in threaded connection with the two ends of the lead screw respectively, and riding wheels are installed at the upper ends of the sliding supports. Rollers rolling along the two rails are arranged at the bottom of the fixed bracket, and a locking mechanism is arranged on the fixed bracket and is used for locking the position of the fixed bracket on the rails; according to the automatic welding device, adaptability is improved, and the automatic welding device can adapt to automatic welding of cylinders with different lengths and different diameters.

This application provides an axial clearance measuring device for ball screw pairs. It uses a top-down nut clamping structure and a screw clamping structure to vertically position the nut and screw of the ball screw pair to be tested. Compared to existing measuring structures that use a clamping structure where the screw and nut are placed laterally, this avoids the problem of inaccurate measurement results caused by center offset due to the lateral placement of a long screw. This application uses a U-shaped fixed clamping block and a U-shaped rotating clamping block in the screw clamping structure, forming an interlocking plug-in structure. A shrinkage slit is provided on the first clamping arc to ensure that the screw clamping structure can effectively clamp any part of the long screw. This avoids the problem of dimensional errors in the long screw during processing affecting the clamping effect and thus the measurement results.

The invention relates to a portable cast-in-place pile hole bottom sediment thickness detection device. The detection device comprises a transportation plate trailer and a thickness detection assembly, a winding mechanism is arranged on the transportation plate trailer, one end of the winding mechanism is fixedly connected with the thickness detection assembly, and the thickness detection assembly comprises a bearing mechanism, a leveling mechanism, a detection mechanism and a moving mechanism; the bearing mechanism serves as a supporting mechanism of the whole detection assembly, the leveling mechanism adjusts the levelness of the detection mechanism and the bearing mechanism, the detection mechanism is used for detecting the sediment thickness, and the moving mechanism is used for driving the whole detection assembly to move. The overall flexible movement of the device is realized through the transportation plate trailer, the winding mechanism can stably lower the detection assembly into a cast-in-place pile hole, the detection assembly can be leveled in the hole through the leveling mechanism, the detection assembly is convenient to move through the moving mechanism, the heavy detection assembly does not need to be manually carried or dragged, and the detection efficiency is improved. The problems that existing equipment is large in size, and manual position adjustment is inconvenient are solved.

This utility model relates to the field of copper wire cold welding technology and discloses a multi-directional synchronous pressure device for a copper wire cold welding machine, a welding platform, a welding support arm fixedly installed on one side of the top of the welding platform, and a limiting mechanism provided inside the welding platform; the limiting mechanism includes a sliding bracket, which is slidably connected inside the welding platform, and a hydraulic rod is fixedly installed on one side of the outer wall of the sliding bracket. This utility model, through the design of a moving plate, a fixed frame, a support shaft, a connecting block, a pressure plate, and a limiting ring, achieves a synchronous pressure clamping effect on the copper wire in multiple directions, avoiding rotation or shaking under force, which would affect the accuracy and quality of welding and cause misalignment. At the same time, it can adjust the displacement of the moving plate according to the diameter of the copper wire, so that the pressure plate rotates, which is suitable for pressure fixing copper wires of different diameters, further improving applicability.

The utility model relates to the field of metal part machining, in particular to a welding device for laser metal part machining. Comprising a box body, a box door, a welding mechanism, a transmission rod, a driving mechanism, a driving gear and the like, a box door is arranged on the box body, a welding mechanism is arranged on the top of the inner side of the box body, a transmission rod is rotatably arranged in the box body, a driving mechanism used for rotating the transmission rod is arranged in the box body, two driving gears are slidably arranged on the transmission rod, the transmission rod can drive the two driving gears to rotate, and air cylinders are arranged on the two sides in the box body. Pistons of the two air cylinders are connected with the two connecting frames respectively. The driving mechanism drives the transmission rod to rotate, so that the metal part is turned over, the welding mechanism can weld the metal part at different angles, a metal plate does not need to be repeatedly disassembled and fixed, and the welding efficiency is improved.

This utility model relates to the technical field of pipette holders, and discloses a pipette holder including a base. A rotating rod is rotatably connected to the top of the base, and a rotating handle is fixedly connected to the top of the rotating rod. A fixed plate is fixedly connected to the outer top side of the rotating rod. Multiple guide blocks are fixedly connected inside the fixed plate, and protective sleeves are fixedly connected to the bottom of each guide block. A pipette assembly is disposed inside the protective sleeve. A rotating disk is fixedly connected to the bottom of the rotating rod, and multiple slots are formed inside the rotating disk. A fixed ring is fixedly connected to the inner right side of the base, and a sliding groove is formed on the inner bottom side of the fixed ring. With this utility model, users no longer need to search among numerous pipettes; they can quickly rotate the required pipette to a convenient position, greatly saving operation time and improving experimental efficiency.

The utility model discloses a urine sample transfer device which comprises a rectangular bottom plate and a right fixing side plate fixed at the top of the right end of the rectangular bottom plate, a left fixing side plate is fixed at the top of the left end of the rectangular bottom plate, and a lower fixing plate is connected between the center of the right fixing side plate and the center of the left fixing side plate. An upper fixing plate is arranged above the lower fixing plate, a plurality of transfer anti-falling protection devices are additionally arranged at the rear end of the upper fixing plate, and the protection devices located right behind the multiple sets of sample tube inserting holes can be rapidly buckled and fixed to the corresponding positions when urine sample tubes are inserted into the urine sample tube inserting holes to be transferred. The pressing fixing strip is tightly pressed at the top end of the sample tube sealing end cover through the soft protection pad, in the transferring process, the soft protection pad provides moderate pressure, the sample tube is prevented from loosening and toppling over, the sealing performance and stability of a sample are guaranteed, the environment is prevented from being polluted, and the detection result is prevented from being influenced; the fixing clamping block is buckled to the bottom of the front end of the upper fixing plate, and installation can be rapidly completed.

The invention discloses a pressure-controllable clamping and dipping device and method for rock sample cementing treatment, and belongs to the technical field of rock sample tests. The device consists of a radial centering pressurizing module, an independent heating container and a hydraulic control system, the independent heating container and a saucepan with a built-in thermometer are fixed on a base, and a heating wire is arranged at the bottom of the base. An annular hydraulic oil groove is integrated in the base and connected with an internal pushing rod through multiple sets of hydraulic oil pipes, a sample contact plate is installed at the tail end of the pushing rod, and a supporting block is arranged on the outer side for positioning. The radial centering and pressurizing module is erected above the circumferential centering and pressurizing module; and an internal pushing rod is connected with the pressure transmission plate and the sample contact plate. A manual hydraulic pump is connected with an oil pump pressurization connector through a quick connector, a hydraulic oil pipe is provided with a high-precision pressure gauge and a control valve, a separator is laid in a sample contact area, and all the components cooperate to achieve cementing treatment of a rock sample at constant temperature and constant pressure.

The utility model discloses a safety helmet ultraviolet ageing test box, include: test box and fixed establishment, the test box inside is provided with ultraviolet lamp, the test box inside is provided with base, fixed establishment includes fixed bolster, is used for the clamping fixed safety helmet's spacing clamping plate and is used for the adjustment clamping degree's adjustment arc plate, the fixed bolster is installed at the base top, the utility model discloses a fixed establishment is set up, not only can the safety helmet clamping fixed to the test box inside, guarantees the stability of safety helmet in the test box, avoids the safety helmet in the test process because of the shaking and leads to the uneven ultraviolet irradiation, and can in the process of safety helmet clamping fixed, according to the clamping degree of fixed establishment to safety helmet is adjusted to the safety helmet in different test scenes, to guarantee the stability of safety helmet under different test scenes.

The invention discloses a chip image registration method, device and equipment, and relates to the technical field of image processing, and the chip image registration method comprises the steps: obtaining a preset overlapping ratio, and calculating and obtaining a preset overlapping region of adjacent chip images according to the preset overlapping ratio; according to the matching similarity in the preset overlapping area, obtaining the actual overlapping rate of the chip image; and according to the actual overlapping ratio, registering the adjacent chip images to obtain a target chip image. Through the above mode, according to the preset overlapping rate, the actual overlapping rate is obtained in the preset overlapping region according to the similarity, so that registration is completed according to the actual overlapping rate in the subsequent matching process, the size of the overlapping region in the registration process is accurate, and the phenomenon that the registration accuracy is poor in the subsequent registration process is avoided. And due to the fact that the calculation amount is increased due to the too large area and information loss is caused due to the too small area, the registration efficiency is improved, and the registration precision requirement is met.

The invention discloses a packaging process for high-precision pressure sensor processing, and relates to the technical field of pressure sensor packaging, and the packaging process comprises an outer shell, a conveying and cleaning mechanism, a conveying and drying mechanism and a collecting device; the overall packaging process is comprehensive and reasonable in design, and the preparation work is comprehensive to guarantee the foundation; the chip cleaning and drying integrated equipment is high in integration, all parts cooperate to ensure that the chip is clean, a high-quality chip is provided for subsequent packaging, the process is simplified, efficiency is improved, and pollution is reduced; the chip mounting and bonding control parameters are accurate, the encapsulation measures are proper, and the stability is enhanced; curing post-treatment and aging screening are strictly controlled, and reliable performance of the sensor is ensured; the collecting device facilitates chip management, improves operation convenience and production efficiency, assists automatic large-scale production, and remarkably improves sensor packaging quality and performance through the whole process.

The utility model discloses a detection device for a tungsten filament mold, which relates to the technical field of tungsten filament mold detection and comprises a detection base, a detection groove is arranged in the middle of the detection base, and a fixing mechanism for fixing the tungsten filament mold is arranged in the detection groove. The fixing mechanism comprises a fixing block and three screws. The top of the detection base is provided with a light supplementing mechanism which is used for supplementing light when optical image detection is carried out on the tungsten filament mold, and the light supplementing mechanism comprises a mounting seat and a sliding ring. And the three clamping blocks move towards the direction of the tungsten filament mold until the clamping blocks make contact with the outer surface of the tungsten filament mold, and then the tungsten filament molds of different sizes can be clamped and fixed through the fixing mechanism. In addition, by arranging the light supplementing mechanism, light supplementing can be conducted on the detection environment through irradiation of a light supplementing lamp, the situation that the accuracy of optical image detection of the tungsten filament mold is affected due to insufficient light conditions is avoided, and the detection accuracy is improved.

The invention relates to the field of vernier calipers, and discloses an internet of things vernier caliper which comprises a caliper body, a vernier scale, a digital display module, a first outer measuring claw and a second outer measuring claw, the vernier scale is slidably mounted on the caliper body, the first outer measuring claw is mounted on the caliper body, the second outer measuring claw is mounted on the vernier scale, and the digital display module is mounted on the vernier scale. The digital display module is used for displaying and recording measured numerical values; the horizontal adjusting unit is fixedly arranged on the first outer measuring claw; according to the internet of things vernier caliper, by arranging the horizontal adjusting unit, when length measurement needs to be carried out on objects with sharp ends such as needles and nails, the objects needing to be measured are manually placed on the horizontal adjusting unit, and the horizontal adjusting unit adjusts the objects to be detected to be in a horizontal state; and the condition that the object is inclined and the measurement accuracy of the vernier caliper is influenced due to the fact that the vernier caliper clamps the object unstably because the contact area between the sharp end part of the object and the vernier caliper is small is avoided.

The utility model discloses a novel tool setting structure for a numerically-controlled machine tool, which relates to the technical field of numerically-controlled machine tools and comprises a workbench, a mounting plate rotatably mounted on one side of the workbench, a tool setting gauge mounted on the mounting plate through bolts, a worm gear fixedly mounted on a rotating shaft of the mounting plate, a worm rotatably mounted on one side of the workbench, and a worm mounted on the other side of the workbench. A worm is installed on the workbench and meshed with the worm gear, a second motor is fixedly installed on the side, provided with the installation plate, of the workbench, the output end of the second motor is fixedly connected with one end of the worm, a fixing plate is fixedly installed on the side, provided with the installation plate, of the workbench, and a rotating plate is rotationally installed on the fixing plate. The second motor is used for driving the worm to rotate, the worm drives the worm gear to rotate, the worm gear drives the mounting plate and the tool setting gauge to rotate by 90 degrees, and therefore the tool setting gauge is hidden and stored on one side of the workbench, the space of the workbench cannot be occupied, and a tool cannot be cracked up.

The utility model relates to the technical field of scales, in particular to foldable portable garbage weighing and recycling equipment, which comprises slides forming a weighing equipment body, a bracket and sensing modules arranged below four end parts of the bracket, a control module and a battery module are arranged below the slides, the slides are divided into a left slide and a right slide, and the left slide and the right slide are connected with the bracket. The lower ends of the positions, close to each other, of the left support and the right support are hinged through an elastic piece, and abutting strips are arranged on the upper sections of the left support and the right support. When the left support and the right support are unfolded, the elastic piece contracts, the two abutting strips make contact, the left support and the right support are folded, the elastic piece is unfolded, and the two abutting strips are separated and arranged in parallel. Existing weighing equipment is divided, the supports are hinged through the elastic pieces, so that the two sides of the weighing equipment can be folded and unfolded, the abutting strips guarantee the structural stability after the weighing equipment is unfolded, and the situation that the precision of weighing data is affected due to the fact that the connecting positions of slides are concave inwards in the weighing process is avoided.

The utility model provides an environment monitoring device for tunnel safety, which comprises a shell, an air inlet flow channel, a semiconductor detection unit, a control panel and a power supply module, the outer wall of the air inlet flow channel is in a circular truncated cone shape and can gather and accelerate air flow, so that the semiconductor detection unit can obtain gas data more efficiently and accurately, and the detection efficiency and sensitivity are improved; in the filter piece connected with the air inlet flow channel, the filter screen can intercept impurities, pollution to the detection unit, influence on result accuracy and reduction of element loss are avoided, and the threaded connection of the connecting cylinder facilitates maintenance; the anti-vibration pad at the bottom of the shell supports the air inlet channel, external vibration influence is reduced, looseness of internal components is reduced, and stable work of the device is guaranteed; the warning lamp is electrically connected with the controller and the like, and warning signals can be sent out in time when abnormity is detected, so that rapid processing is facilitated, and the early warning capacity is improved. According to the device, efficient and accurate detection, stable operation and timely early warning are realized, and the tunnel safety monitoring level is improved.

The utility model relates to the technical field of relay manufacturing, and discloses a novel yoke moving spring riveting mechanism which comprises a rack, a conveying table, a tool, a clamping module and a riveting module. The conveying table is arranged on the rack and provided with a conveying channel used for being in butt joint with and communicating with an external conveying mechanism, and a riveting station is arranged on the conveying channel. The tool is in sliding connection with the conveying channel of the conveying table, and is used for accommodating the yoke assembly and the movable spring assembly and the contact terminal which are arranged on the yoke assembly, and limiting the yoke assembly; the clamping module is arranged on the rack, is opposite to the riveting station in position and is used for clamping or loosening the yoke assembly on the riveting station; the riveting module is arranged on the rack, located above the riveting station and used for pressing the movable spring assembly and the contact terminal on the riveting station downwards so as to rivet the yoke assembly, the movable spring assembly and the contact terminal into a whole. The automatic riveting machine can solve the problems of how to automatically input workpieces to be riveted and automatically output riveted workpieces.