3results about How to "Achieve pumping" patented technology

The present application relates to the technical field of concrete pump truck, and particularly discloses an automatic adjusting method of a concrete pumping hydraulic system, which comprises an executing assembly, an oil supply assembly and an adjusting assembly. The reverse synchronous movement of a first hydraulic cylinder and a second hydraulic cylinder in the executing assembly is realized through the oil supply assembly. In this process, if the moving distances of the first piston and the second piston are synchronous, the total oil volume of the first communicating cavity composed of the small cavity of the first hydraulic cylinder and the small cavity of the second hydraulic cylinder is a constant value a. If it is found that the moving distances of the first piston and the second piston are asynchronous, the total oil volume of the first communicating cavity changes to b, then the amount of oil in the small cavity of the first hydraulic cylinder can be increased through the first adjusting assembly, or the amount of oil in the small cavity of the second hydraulic cylinder can be reduced through the second adjusting assembly, so as to make b approach a and the moving distances of the first piston and the second piston tend to be synchronous.

This invention belongs to the field of building material testing technology, specifically relating to a mechanical sensing-type asphalt admixture preparation shear strength testing device. It includes a fixed frame with a test chamber fixedly connected inside. A drive unit is fixedly connected to the upper end of the test chamber, providing driving force for the device. A mixing unit is fixedly connected to the middle of the drive unit, used for mixing asphalt and admixtures. A shearing unit is fixedly connected to the lower end of the drive unit, used for testing the shear strength of the mixture formed by the asphalt and admixtures. The shearing unit includes a mounting base, shear blades, a separating ring, and a layering block. The mounting base is fixedly connected to the drive unit, and multiple shear blades are provided, with each shear blade fixedly connected to the outer edge of the mounting base. This invention ensures stable high-speed operation through a three-blade symmetrical inclined design, integrating mixing and shearing functions, effectively improving the uniformity of material mixing and the accuracy and reliability of shear testing.

The utility model discloses a NDIR module detection device with multichannel relates to gas detection technical field, including equipment shell, the surface of equipment shell is equipped with the secondary detection gas hole, and the edge of equipment shell is equipped with the air inlet cavity, and the surface of equipment shell is installed with waterproof air permeable membrane, and the air inlet cavity is installed with air inlet mechanism, and air inlet mechanism includes setting in the air inlet cavity mechanism shell body, and the bottom of mechanism shell body is equipped with the main detection gas hole, and the one -way air outlet valve is installed in the main detection gas hole, and the piston plate is swinged and installed in the mechanism shell body, and the air inlet is equipped with in the piston plate, and the drive mechanism is installed in the mechanism shell body, and air inlet mechanism still includes setting in the one -way air inlet valve of air inlet and the sealing strip of fixed mounting in the edge of piston plate. This NDIR module detection device with multichannel, through air inlet mechanism and drive mechanism cooperation uses, can pump the outside gas into equipment shell and carry out detection fast, has improved the response speed of detection.