159results about How to "Guaranteed test results" patented technology

The invention relates to the technical field of image processing, in particular to a lumbar vertebra osteoporosis auxiliary detection method and system based on an X-ray film. The method comprises the following steps: acquiring a lumbar vertebra X-ray film image; in combination with shape distribution of edge lines in the lumbar vertebra X-ray film image, determining a vertebral body area; based on the difference condition of the position distribution of each pixel point and the similar pixel points thereof, obtaining the influence degree value of skeleton overlapping on each pixel point; obtaining a difference index corresponding to each pixel point in the centrum region according to the difference between each pixel point in the centrum region and the standard gray level of the normal centrum region; and in combination with the influence degree value and the difference index, obtaining a lumbar vertebra osteoporosis evaluation value, and further obtaining an accurate auxiliary detection result of the lumbar vertebra osteoporosis. The accuracy of the judgment result of the suspected osteoporosis condition is improved.

The utility model belongs to the technical field of coating testing, and discloses a super-hydrophobic coating water impact resistance testing device which comprises a sample table, a water storage pond, a peristaltic pump, a buffer cup and a support, a sample is placed on a supporting seat of the sample table, the supporting seat is obliquely arranged and adjustable in angle, the sample table is placed in the water storage pond, the sample is located above the water storage pond, and the peristaltic pump is arranged on the supporting seat. The peristaltic pump is respectively connected with a water inlet pipe and a water outlet pipe, the peristaltic pump can pump water in the water storage tank into the water outlet pipe through the water inlet pipe, the buffer cup is arranged perpendicular to the sample table, the water outlet pipe is connected to the top of the buffer cup, the buffer cup can flow water to the top of a sample, and the buffer cup is arranged on the support in a position adjustable mode. The angle between the sample and the test water flow can be changed through the supporting seat, the water is recycled through the water storage tank, and the problem of water flow pulse generated by directly using the peristaltic pump is solved through the buffer cup.

The invention provides a water-rich environment rock shear force testing device, and belongs to the field of rock shear tests. Comprising a left half box body and a right half box body which move mutually and can be spliced into a box body, the inner bottom walls of the left half box body and the right half box body are obliquely arranged, a sediment storage box communicates with a stirring box through a communicating pipe, the stirring box further communicates with a water inlet pipe, the water inlet pipe communicates with the stirring box and the box body, and the water outlet end of a water outlet pipe communicates with the stirring box. The water inlet end of the water outlet pipe is communicated with the box body, an experimental sample is installed between the lower shear box assembly and the upper shear box assembly, the upper shear box assembly provides shear force for the upper shear box assembly, and the lower shear box assembly provides shear force for the lower shear box assembly. When a test is started, the left half box body and the right half box body move in opposite directions, so that the space for loading an experiment sample is increased, the test is facilitated, sediment can be added into the stirring box through the sediment storage box, and after water and the sediment are mixed, the experiment condition under the water quality state containing impurities can be simulated.

The utility model discloses a universal testing machine which comprises an outer shell, an adjustable light source is fixedly arranged at the top in the outer shell, a bearing plate is arranged at the bottom in the outer shell, an adapter plate, an illuminometer, a power supply module and a product automatic starting-up mechanism are fixedly installed on the bearing plate, heating blocks are symmetrically and fixedly arranged on the upper side of the bearing plate, and the heating blocks are connected with the adapter plate. The heating block is fixedly arranged on the bearing plate through an inverted-L-shaped support, and a metal baffle is further fixedly arranged on the upper side of the bearing plate. According to the utility model, the adjustable light source is used to calibrate the light sensor, the infrared light emission source is placed at a position higher than the sensor to detect the PIR, the function of the ultrasonic sensor can be detected, and the whole testing machine can test more performances and has strong applicability.

The present invention relates to a fatigue testing device for a mechanical arm applied to the field of mechanical arm detection, comprising a body and a material block, a mechanical arm is installed on the top of the body, and the body is located at both ends of the mechanical arm and is respectively fixedly connected with a right platform and a left platform, a side of the body located at the bottom end of the left platform is provided with a left testing cavity, the bottom end of the left testing cavity is fixedly connected with a sleeve, the inside of the sleeve is slidably connected with a lifting rod, the top end of the lifting rod is fixedly connected with the bottom end of the left platform, when the mechanical arm is tested, the material block is grabbed by the mechanical arm and moved back and forth on the right platform and the left platform, which can simulate the real load of the mechanical arm in the actual application scene, so that the testing effect of the mechanical arm is more accurate, and at the same time, the displacement deviation of different parts of the mechanical arm can be obtained through a single left distance sensor, a large number of sensors are subtracted while ensuring the testing effect, and the cost is reduced while the stability of the test result is improved.

The utility model discloses an electric toothbrush acting force testing device, and relates to the technical field of electric toothbrushes. Comprising a workbench, a mold assembly is arranged on one side of the workbench, an adjusting clamping assembly is arranged on the front side of the workbench, the adjusting clamping assembly comprises a containing groove formed in the workbench, the containing groove is transversely formed, a U-shaped plate is slidably arranged in the containing groove, and a two-way screw is rotatably inserted between two opposite vertical plates of the U-shaped plate; the two-way screw is symmetrically sleeved with sliding blocks, and U-shaped blocks are fixed to the sliding blocks. By adjusting the arrangement of the clamping assembly, when an electric toothbrush needs to be clamped and tested, the two U-shaped blocks are moved to a proper distance, then the clamping blocks are controlled to clamp the electric toothbrush, and the U-shaped plates integrally drive the electric toothbrush to move, so that the electric toothbrush is clamped at multiple points by the device, and the testing efficiency is improved. The clamping stability of the electric toothbrush is improved, and the testing effect is guaranteed.

The invention relates to the technical field of semiconductors, and relates to a test structure, a chip typesetting pattern and a test method.The test structure comprises a test pad and a probe card, the test pad comprises a first edge and a second edge which are distributed in parallel and a third edge and a fourth edge which are distributed in parallel, and a first included angle is formed between the first edge and the third edge; the probe card comprises a probe arm and a test probe, the probe arm comprises a connecting surface, and the test probe is connected with the connecting surface; the orthographic projection of the test probe on the first reference surface and the orthographic projection of the connection surface on the first reference surface form a second included angle; the connecting surface comprises a side edge, a third included angle is formed between the orthographic projection of the test probe on the second reference surface and the orthographic projection of the side edge on the second reference surface, and the first included angle, the second included angle and the third included angle are all larger than 0 degree and smaller than 90 degrees; the first reference surface is any plane perpendicular to the connecting surface and parallel to the side edge, and the second reference surface is any plane parallel to the connecting surface. The test structure can reduce the width of the cutting channel and improve the yield.

The invention discloses a test device for vehicle gauge semiconductor chip packaging, and relates to the field of chip test equipment.The test device comprises a test host, a test module and a bearing table are installed on the test host, a push broach used for testing is installed on the test module, and an integrated seat is installed on the bottom side of the test module; the device further comprises a pressing protection device, the pressing protection device is installed on the bottom side of the integrated base, the push broach is located in the pressing protection device, and the pressing protection device is used for protecting the push broach. It needs to be explained that in the embodiment of the invention, the push broach is integrally sealed through the two lower protection boxes and the two upper protection boxes, the problem that the push broach is collided or eroded by the external environment due to long-term exposure is avoided, and the safety of the push broach is effectively guaranteed; in addition, when the test module is reset, the cleaning brush rotates to clean the push broach, cleanliness of the push broach is guaranteed, and then the test effect of the push broach is guaranteed.

The invention provides a digital liquid drop micro-fluidic chip system and a bacteria detection method, and relates to the technical field of microbiological detection, the digital liquid drop micro-fluidic chip system comprises a micro-fluidic liquid drop generation chip, a micro-fluidic liquid drop fusion chip and a micro-fluidic liquid drop reaction chip. The bacterium detection method comprises the step of carrying out bacterium detection on a sample by using the digital droplet micro-fluidic chip system. The digital droplet micro-fluidic chip system and the bacterium detection method have the advantages of high detection flux, high stability, high sensitivity, rapidness, low cost and the like, are suitable for simultaneous detection of various bacteria in unknown samples, and can be used in the fields of environmental microorganism detection, food-borne pathogenic bacterium detection, clinical pathogenic bacterium diagnosis and the like.

The invention relates to the technical field of medical instruments, and belongs to a gastroenterology sampling, detecting and sealing device which comprises a tube body, a blanking cap and a cylinder, the blanking cap and the cylinder are both arranged on the tube body, the blanking cap and the cylinder are alternately used, and the tube body is detachably connected with the blanking cap and the cylinder through fixing assemblies; the bottom end of the cylinder is provided with a scraping component for scraping substances on the surface of the sample; a sampler is arranged in the pipe body and comprises a sampling barrel, the sampling barrel is arranged in the pipe body in a sliding mode, a piston plate is arranged in the sampling barrel in a sealing and sliding mode, and the sampling barrel is in transmission fit with the piston plate through a connecting piece; the sampling barrel is matched with the scraping assembly; and a reset assembly is arranged in the pipe body and is connected with the sampling barrel. The first push handle is pushed to push the sampling barrel to move downwards, the shifting piece is pushed to be opened in the downward moving process of the sampling barrel, substances on the surface of a sample are pushed away through the shifting piece, the sampling barrel is directly inserted into the sample which is not polluted, the sample is extracted, the quality of the sample is improved, and the detection result of the sample is further guaranteed.

The invention relates to the technical field of cleaning equipment, in particular to an underwater cavitation jet experiment table with a modular base, which comprises a water tank support frame, a transparent water tank is arranged in the water tank support frame, and a sliding table is arranged at the top of the water tank support frame in the vertical direction; the injection control device is mounted on the sliding table to move in the vertical direction, and comprises a shutter assembly and a nozzle assembly; the test piece impact table assembly is used for fixing a test piece, the test piece impact table assembly is located in the transparent water tank and installed in a bottom-sitting mode, and the test piece impact table assembly comprises a modular base, an impact table and a test piece limiting plate located above the impact table. The sliding table is used for driving the injection control device to move, so that experiment requirements of different target distances are met; the shutter piece can be released or closed through automatic program control, the test time of different test pieces is accurately controlled, and the test effect is guaranteed.

A chip crystal grain high-temperature test clamp comprises a crystal grain placing area which is provided with a common plate, a plurality of crystal grains are placed in the upper end face of the common plate, and a plurality of probes in contact with crystal grain anodes are further arranged above the common plate; the circuit arrangement area is provided with a burn-in board, a fuse is arranged on the burn-in board, and the burn-in board is connected with the probe through a wire; wherein each crystal grain is provided with one fuse and one probe; and each probe in contact with the crystal grains is connected with the fuse through a lead. The test fixture is simple in structure and easy to operate, unqualified crystal grains can be accurately and quickly found, and normal test results of other crystal grains are not affected; all the crystal grains are detected before packaging, so that the later packaging quality can be ensured; the test period can be shortened, and the test risk can be reduced. The utility model further provides production equipment provided with the test fixture.

The utility model relates to the technical field of concrete compressive strength detection, in particular to a concrete detection device for building construction, which comprises a rebound apparatus body, a bouncing rod is arranged in the rebound apparatus body, a fixing cylinder synchronously sliding with the bouncing rod is slidably arranged on the outer surface of the rebound apparatus, and the fixing cylinder is connected with the bouncing rod through a pressing assembly. The pressing assembly is used for being tightly attached to the elastic striking rod, so that the elastic striking rod drives the fixing cylinder to slide synchronously, and a sliding sealing assembly is arranged at the end, away from the pressing assembly, of the fixing cylinder. By arranging a fixing cylinder, a supporting block, a pressing assembly and a sliding sealing assembly, the inner wall of a flexible conical ring is tightly attached to an elastic rod, dust can be prevented from entering the rebound apparatus body through a gap between the elastic rod and the rebound apparatus body, the dust is effectively prevented from affecting the precision of the apparatus, and the detection result of the apparatus is ensured; and meanwhile, extra resistance is not applied when the rebound apparatus is pressed, so that the labor intensity of workers is effectively reduced.

The invention relates to the technical field of concrete detection, in particular to a recycled concrete sample compressive strength testing device which is arranged to conveniently clamp and fix the center of a recycled concrete sample, so that the testing result of the recycled concrete sample is ensured. Comprising a workbench, a fixing frame, a strength testing device, a fine adjustment device and a clamp assembly, the fixing frame is installed at the top end of the workbench, the strength testing device is installed at the top of the fixing frame, and the fine adjustment device is installed at the top end of the workbench; the clamp assembly comprises a placing table, two first two-way screws, two clamping plates, four first sliding blocks, two second two-way screws, four clamping plates, four second sliding blocks, two belt wheels, a belt, a motor and a mounting frame, the placing table is connected with the fine adjustment device in a matched mode, and the four first sliding blocks are mounted on the front sides and the rear sides of the bottom ends of the two clamping plates correspondingly; the motor is mounted at the inner end of the mounting frame which is mounted on the right rear side of the bottom end of the placement table.

The present invention provides a low-temperature and high-speed test fixture, comprising a body component and a test mechanism, wherein the body component comprises a frame, a supply module, a cam pressing module, a material taking module and a base; the test mechanism comprises a refrigeration plate, a flexible soft board, a motherboard, an RF detection module, a daughter board, a refrigeration motor and a storage plate; a supply module is installed in the middle of the upper surface of the frame, and the bottom of the supply module penetrates the inner wall of the frame and is installed with a cam pressing module. The present invention reversely places the soft board to be tested in the storage plate through the cam pressing module, and then uses the adsorption hole to adsorb and fix the soft board, then cools the soft board through the refrigeration plate, and then transfers the soft board through the flexible soft board, and then performs high-frequency testing on the soft board through the RF detection module, so that the soft board can be tested at low temperature and high speed, thereby reducing the influence of high temperature on the soft board, ensuring the test effect, and improving the test efficiency.

A feeding and weighing system for spirally conveying tobacco shreds comprises a hopper with an opening in the top, a stepping motor, a weighing tray and an electronic balance, a vertical frame is arranged on one side of the electronic balance, the hopper and the stepping motor are fixedly installed on the vertical frame at intervals, the hopper is located above the electronic balance, and a rotating shaft is horizontally and rotationally installed at the bottom in the hopper; one end of the rotating shaft is rotatably installed on one side plate, away from the electronic balance, of the hopper in a penetrating mode and is in transmission connection with a motor shaft of the stepping motor, a discharging port is formed in the lower side portion of one side plate, close to the electronic balance, of the hopper, the other end of the rotating shaft extends to the discharging port, and spiral conveying blades spirally arranged in the axial direction are fixedly installed on the rotating shaft; the conveying direction of the spiral conveying blade faces the discharging port in the axial direction of the rotating shaft, and the weighing tray is placed on the electronic balance. The full-automatic tobacco filling machine is high in weighing precision and weighing efficiency, capable of improving tobacco filling efficiency, high in mechanization degree, low in labor intensity and low in labor cost, tobacco shred pollution is avoided, and test results are guaranteed.

The utility model discloses a phased array ultrasonic detection device for pipeline cracks. The phased array ultrasonic detection device comprises a moving structure and a detection structure, the moving structure comprises two rails and a connecting plate, and the two rails are parallel to each other; two ends of the connecting plate are fixedly connected with the two rails respectively; a guide rail groove is formed in each guide rail along a straight line; the detection structure comprises a detection frame body, two roller groups, an encoder and an ultrasonic probe; the two roller groups are symmetrically and rotatably arranged on the left side and the right side of the detection frame body, and each roller group is accommodated in one guide rail groove; the encoder is arranged on the detection frame body, and a code wheel of the encoder is in contact with the surface of one track; an ultrasonic probe is arranged at the front end of the detection frame and located between the two rails. When the pipeline crack detection device is used for detecting the pipeline crack, the ultrasonic probe linearly moves on the pipeline along the guide rail groove and does not swing greatly, so that the detection result is guaranteed.

The application belongs to the technical field of sensing, and discloses a preparation method of a high-stability wearable lactic acid biosensor based on Prussian blue analogues. The method comprises the following steps: (1) constructing a three-electrode sensor array on a flexible substrate through a screen printing technology; (2) sequentially depositing gold nanoparticles and a PB-NiHCF composite catalytic layer on the surface of a working electrode through a cyclic voltammetry method; (3) finally obtaining the sensor by curing under the condition of 4 DEG C and avoiding light after layer-by-layer modification of a chitosan-carbon nanotube conductive layer, lactic acid oxidase and a diffusion-limiting membrane. The sensor significantly improves the stability under physiological pH conditions through the synergistic catalytic effect of PB-NiHCF, the linear detection range reaches 30 mM, the sensitivity is 223.94 nA mM ‑1 cm ‑2 , and the sensor is suitable for real-time monitoring of sweat lactic acid.

The invention discloses a performance detection device for wire and cable production and a use method thereof, and relates to the field of test equipment. A base is horizontally and movably arranged on the test bed, a hollow stand column is fixedly installed on the base, a stand pipe is arranged on the front side of the stand column, a punch hammer is arranged in the stand pipe in a sliding mode, magnetic hanging lugs are installed on the upper portions of the left side and the right side of the punch hammer, the magnetic hanging lugs penetrate out of the stand pipe respectively, and supporting shafts are fixedly installed on the magnetic hanging lugs respectively. The support shaft is detachably connected with a weight; the left side and the right side of the driving block are each provided with a connecting frame, the connecting frames penetrate out of the stand columns, the connecting frames are bent and extend to the positions above the magnetic attraction hanging lugs, and electromagnets matched with the magnetic attraction hanging lugs in a magnetic attraction mode are fixedly installed on the connecting frames. The device has the beneficial effects that the weight of the punch hammer is adjusted by increasing or decreasing the weight, the punch hammer slides along the vertical pipe to conveniently pick up the punch hammer and release an impact cable, the automation level is improved, and the use flexibility and convenience are improved.

The present invention discloses a vertical variable force loading system and a frame lateral force testing method under vertical loading conditions, the system comprises a reaction frame, a ground beam, a loading device, a sliding device, a loading force conversion device and a steel wire rope, the frame to be tested and the slide rail are both arranged on the ground beam, the sliding device and the loading force conversion device are arranged on the slide rail, a plurality of loading devices are arranged on the top of the frame to be tested, one end of the steel wire rope passes around the pulley on the reaction frame and is connected to a weight, the other end passes around the pulley on the sliding device, the pulley on the loading device, the loading force conversion device in turn, and is finally fixed on the fixed pile of the ground beam, in addition, a lateral loading device is arranged on the side of the reaction frame facing the frame to be tested. Under the action of the loading system, the component is subjected to a stable vertical force, which overcomes the deficiency of using a cylinder to apply a vertical force in the prior art.

The invention relates to a solid-state battery pressurization test device and system. The device comprises a sealing box and a pressurization test module, the sealing box is used as a water-free oxygen environment for the pressurization test of the to-be-tested battery; operation gloves are arranged on the sealing box and are used for assembling a to-be-tested battery in the sealing box; the pressurization test module is arranged in the sealing box and comprises a shell, a clamp assembly, a pressurization assembly and a positioning assembly; the clamp assembly is used for fixing the assembled to-be-tested battery; the pressurizing assembly is arranged on the shell and is used for applying preset pressure to the to-be-tested battery on the clamp assembly; and the positioning assembly is used for positioning the to-be-tested battery on the clamp assembly and butting the to-be-tested battery with the pressurizing assembly. In the embodiment of the invention, the whole process of the battery pressurization test is completed by controlling each component by the control module in the sealing box, the sealing problem does not need to be considered, the material for sealing the battery and the time for sealing the battery are saved, and the battery test efficiency is improved.

The invention provides a non-excavation detection device for a grounding grid of a power transmission tower, and belongs to the technical field of detection devices.The system comprises a detection module, a hardware development module, a software development module and a device module, and the detection requirement is obtained, the detection target and range are determined, and a corresponding measurement scheme is designed; the hardware module selects a proper measurement module for signal acquisition, the software module realizes data processing and analysis, and finally feeds back a result to a user, so that non-excavation and real-time detection is realized in the whole process, the safety and the effectiveness of the grounding grid are ensured, potential safety hazards caused by power failure and excavation are avoided, the safety of equipment and personnel is ensured, and the safety of the equipment and the personnel is ensured. The detection result is rapidly obtained, the detection time is shortened, the working efficiency is improved, and the measurement precision and reliability are improved.

The present invention discloses a test device for automotive semiconductor chip packaging, which relates to the field of chip testing equipment, including a test host, on which a test module and a load platform are installed, on which a push knife for testing is installed, and on the bottom side of the test module is installed an integrated seat; it also includes a clamping protection device, which is installed on the bottom side of the integrated seat, and the push knife is located in the clamping protection device, and the clamping protection device is used to protect the push knife. It should be noted that in the embodiment of the present invention, the push knife is completely enclosed by two lower protective boxes and two upper protective boxes to avoid problems such as long-term exposure of the push knife to collision or erosion by the external environment, thereby effectively ensuring the safety of the push knife; in addition, when the test module is reset, the cleaning brush is rotated to clean the push knife, ensuring the cleanliness of the push knife, thereby ensuring the test effect of the push knife.

The utility model discloses a cabin monitoring real-time alarm device which comprises a box body, a control panel is installed on the front face of the box body, a voice broadcast device is installed on the front face of the box body, an oxygen concentration monitor is installed on the inner bottom wall of the box body, and air outlet grooves are formed in the left side face and the right side face of the box body. The inner wall of each air outlet groove is fixedly connected with a shielding net, and the inner wall of the box body is fixedly connected with a partition plate. According to the device, through cooperation of the box body, the partition plate, the mounting cylinder, the fan, the oxygen concentration monitor, the control panel and the voice broadcaster, the concentration of gas around the oxygen concentration monitor and the concentration of outside gas can be the same through work of the fan, so that the oxygen concentration detection result is guaranteed, the oxygen concentration can be displayed through the control panel, and the device is convenient to use. Parts of people with diseases can inhale oxygen in time, and when the oxygen concentration is limited, the voice broadcaster can give an alarm, so that all passengers can inhale oxygen in time.

The invention relates to the technical field of mechanical performance detection, and discloses a horizontal tension test tool, which solves the problem and comprises a ground, a test box is arranged at the top of the ground, a hydraulic rod is arranged at the left end of the test box, a movable screw rod is in meshed connection with the right end of the test box, and two clamping blocks are arranged in the test box. A pouring block is slidably connected to the interior of the clamping block at the right end, a cable is fixed to the left end of the pouring block, a plurality of clamping heads are slidably connected to the left end of the cable, a cable positioning pipe is slidably connected to the exteriors of the clamping heads, and a positioning block is fixed to the left side of the cable positioning pipe through the clamping pipe; the positioning block is in sliding connection with the clamping block at the left end; by rotating the clamping handle, the nut can move leftwards, so that the clamping head moves rightwards under the action of the screw tube, a cable can be clamped, the stability of equipment is ensured, the clamping effect is ensured, and the subsequent test effect is ensured.

The utility model relates to the technical field of charging test, and discloses a battery simulation test circuit, which comprises a simulation battery unit, a monitoring unit and a discharging unit, and is characterized in that the simulation battery unit is used for being connected with a mainboard, and a charging module on the mainboard is used for charging the simulation battery unit to enter a charging test; one end of the monitoring unit is connected with the simulation battery unit, the other end of the monitoring unit is connected with the mainboard, and the monitoring unit is used for monitoring battery information when the charging module performs charging test on the simulation battery unit; and one end of the discharging unit is connected with the simulation battery unit and the mainboard, and the discharging unit is used for discharging the electric quantity of the simulation battery unit according to a control instruction which is sent by the mainboard and corresponds to the battery information. The battery simulation test circuit disclosed by the utility model not only can replace a real battery and save the test cost of using battery materials, but also can quickly discharge so as to quickly put into the next round of charging test, thereby improving the test efficiency of the charging module.

The utility model relates to the technical field of detector, concretely is a card warping degree detector, including base and detection part, still including spacing part and pressing part, spacing part is located on the base upper surface, is used for fixing card on the base, pressing part also is located on the base upper surface, and is located spacing part middle part, is used for pressing card on the base, spacing part includes fixed spacing assembly and sliding spacing assembly, fixed spacing assembly is L type, is used for the preliminary restriction card, the utility model discloses through setting left baffle and front baffle, carries out the restriction to the two sides of card adjacent, right baffle between adjustable and left baffle distance, can limit the other side of card, and also facilitate taking and placing card, the crank of rotation presses down card in middle part, further fixes card, and will not lead to card deformation, guarantees detection result. The detector simple structure, low price, be favorable to cost control.

The present invention discloses a sand and dust recovery device for a Martian wind tunnel, which can realize the centralized recovery of sand and dust without changing the original aerodynamic profile and flow field parameters of the Martian wind tunnel, effectively improving the recovery efficiency and reducing the recovery workload. The device includes an exhaust regulating valve, a sand and dust filter tank and a vacuum pump, and also includes a partition. The partition is installed in the vacuum container of the Martian wind tunnel, and the partition divides the inside of the vacuum container into two, forming two relatively independent chambers. The installation position of the partition coincides with the plane where the outlet of the wind tunnel in the test chamber is located. The test chamber where the wind tunnel is located is provided with a main exhaust port flange, which is connected to the main exhaust pipe; the top of the recovery chamber is provided with an auxiliary exhaust port flange, which is connected to the auxiliary exhaust pipe. After the main exhaust pipe and the auxiliary exhaust pipe are connected outside the vacuum container, they are connected to the inlet of the sand and dust filter tank through the exhaust regulating valve. The outlet of the sand and dust filter tank is connected to the vacuum pump, and the outlet of the vacuum pump is directly discharged to the atmosphere through the exhaust pipe.

The present invention provides a rock shear force test device for a water-rich environment, belonging to the field of rock shear test. The device comprises a left half box and a right half box that can move mutually and be assembled into a box, the inner bottom walls of the left half box and the right half box are both inclined, a sediment storage box is connected to a mixing box through a connecting pipe, a water inlet pipe is also connected to the mixing box, the water inlet pipe connects the mixing box and the box, the water outlet end of the water outlet pipe connects the mixing box, the water inlet end of the water outlet pipe connects the box, and the experimental sample is installed between a lower shear box assembly and an upper shear box assembly, the upper shear force assembly provides shear force for the upper shear box assembly, and the lower shear box assembly provides shear force for the lower shear box assembly. When the test starts, the left half box and the right half box are moved toward each other, thereby increasing the space for loading the experimental sample, which is convenient for the test, and sediment storage boxes can be used to add sediment to the mixing box, and after mixing water with sediment, the experimental condition under the water quality state containing impurities can be simulated.

The utility model provides a glove hole small door structure of a high and low temperature box door body, which comprises a door body, a mounting hole is arranged in the middle of the door body, the upper side and the lower side in the mounting hole are respectively provided with a window glass, a stainless steel component is arranged between the upper window glass and the lower window glass, and a glove hole is formed in the stainless steel component. A blocking door is hinged to the door body and located on the side edge of the mounting hole. Compared with the prior art, the sealing door has the following beneficial effects that the sealing door is free of cold leakage in the low-temperature operation process of equipment, a user test piece is free of frosting, the product performance is stable, the energy consumption of the equipment is effectively saved, the cold leakage of the inner box needs to be balanced by the power output of the compressor according to the law of conservation of energy, and the service life is prolonged. A white silica gel plate adopted in the existing technical scheme is denatured under a low-temperature condition, and is damaged after being repeatedly used by a user, so that cold leakage at glove holes is serious, and the test of test pieces and products of the user is influenced.