8results about How to "Check tightness" patented technology

This invention discloses an electromechanical brake with a venting device, comprising an actuator assembly, which includes a motor reduction housing, an ECU housing, and an ECU cover. The front end of the ECU housing is sealed to the ECU cover with adhesive, and the back end of the ECU housing is fixedly connected to the motor reduction housing, with a sealed connection between the back end of the ECU housing and one end of the motor reduction housing. The other end of the motor reduction housing is fixedly connected to one end of the clamp body, and the other end of the motor reduction housing is sealed to one end of a piston cylinder on the clamp body at its output end. A dustproof sealing element is provided at the other end of the piston cylinder. A venting device is installed on the back of the ECU housing, located in the gap between the ECU housing and the motor reduction housing. This venting device ensures the balance of internal and external air pressure in the electromechanical brake, thereby preventing excessive air pressure in the internal cavity of the electromechanical brake from damaging its sealing structure.

The utility model discloses a kind of safety valve individual test equipment, belong to safety valve detection technical field, including setting oil tank, test pump and safety valve to be measured, the oil outlet of oil tank is connected by first pipeline with the import of test pump intercommunication, the outlet of test pump is connected by second pipeline with the import of three-way pipe fitting;The first outlet of three-way pipe fitting is connected by third pipeline with the import of safety valve to be measured intercommunication, the outlet of safety valve to be measured is connected by fourth pipeline with the oil return flange of oil tank intercommunication, forms test loop;The second outlet of three-way pipe fitting is connected by fifth pipeline with the oil return port of oil tank intercommunication, forms oil return empty path;Switching valve assembly for oil return empty path and test loop switching is provided on three-way pipe fitting.The utility model has realized the operability of safety valve individual test, with the advantage that flexibility is high, meet the test demand of DV and DS series structure safety valve.

The utility model relates to cylinder cover oil atomizer bush detection technical field, concretely is a kind of cylinder cover oil atomizer bush detection two valve cylinder head press tool, including oil atomizer copper bush, first support plate and second support plate.The utility model is connected by latch bolt and bolt washer, bolt washer can be sleeved in the surface of latch bolt, then latch bolt is installed on the surface of first support plate by first slot, so that latch bolt is installed into positioning groove inside, so that latch bolt passes through second slot, oil atomizer copper bush, first support plate, second support plate and latch bolt can be fixed together by nut, oil atomizer copper bush can be supported in water, copper bush cover can be installed at copper bush mouth, gas nozzle can be installed at outer thread sleeve, oil atomizer copper bush is placed in water, gas nozzle is connected with gas source, if bubble is generated in water, then it can prove that oil atomizer copper bush is damaged, reach the effect that oil atomizer copper bush sealability can be conveniently detected.

The application discloses a lithium battery packaging airtightness detection equipment and a detection method thereof, relates to the technical field of lithium battery packaging airtightness detection, and comprises an operation table, a battery shell and a gas inlet device for inputting detection gas, further comprises a fixed cylinder for receiving the gas inlet device, a piston plate slidingly arranged in the fixed cylinder and driven by gas pressure, an adjusting unit drivingly connected with the piston plate and used for simulating a damaged state of the battery shell sealing, and a limiting unit drivingly connected with the piston plate and used for cooperating with the adjusting unit to change the sealing state of the battery shell. The application simulates the damaged state of the sealing gasket through the interaction of the upper magnet and the lower magnet, realizes the effect of detecting the sealing performance of the lithium battery shell after being used for a period of time, and observes whether the dye leaks through the cooperation of the transparent mark frame arranged on the battery shell and the fluorescent dye, so that the airtightness of the battery shell is detected.

The utility model discloses an automobile oil seal aluminum gasket sealing performance detection device comprising a rack, a detection bench is arranged on the rack, and a valve oil seal is arranged on the detection bench; the top of the rack is provided with a detection mechanism, the output end of the detection mechanism is provided with a connector, the connector is in interference connection with the valve oil seal, and the size of the connector can be selectively set; and a main control device is arranged on one side of the rack. According to the device, the size of the connector can be selectively set, and under the synergistic effect of the driving assembly, the connectors of different sizes can be conveniently disassembled and assembled so as to adapt to sealing performance detection of valve oil seals of different sizes; the sealing performance of the valve oil seal can be detected according to the air pressure change in the sealing cover through a pressure sensor in the detection mechanism and matching with the main control device.

This invention relates to the field of subway air conditioning testing technology, specifically disclosing an air conditioning pipeline sealing test device, comprising: a sealing cover, an inflation port, a vent, an electronic pressure gauge, and a connecting pipe. Two sealing covers are provided; one sealing cover has an inflation port communicating with its inner cavity at its front bottom, and the other sealing cover has a vent port communicating with its inner cavity at its front bottom. The electronic pressure gauge is positioned at the front top of one of the sealing covers, and its inner cavity is connected to the inner cavity of the sealing cover. The connecting pipe is located at the front middle of the sealing cover, and its inner cavity is connected to the inner cavity of the connecting pipe. This device can quickly and accurately detect the sealing performance of subway air conditioning pipelines and rapidly locate the leak point when a leak is detected, improving testing efficiency and accuracy while reducing maintenance costs and time.

The utility model discloses equipment for monitoring thermal expansion of epoxy resin adhesive in real time, which comprises a closed container and a heating device, the heating device is used for heating a sample in the container, the container is filled with colored liquid, and the container can be used for monitoring liquid level change and temperature change; the liquid temperature monitoring device can monitor the temperature of liquid in real time, distilled water harmless to human bodies can be adopted as the liquid, the environment is not affected, and the liquid temperature monitoring device has the outstanding advantages of being simple, practical and easy to popularize.