30results about How to "Avoid uneven loading" patented technology

The invention relates to a quantitative rock soil ore loading station, which is a device capable of loading bulk cargos into a railway wagon by a hopper. The quantitative geotechnical ore loading station comprises a steel structure frame, and a conveying belt machine head arranged at the topmost end of the steel structure frame, wherein a buffer bin with a double-wing radial gate, which is arranged on the steel structure frame, is arranged below the conveying belt machine head, and a quantitative bin with a double-wing radial gate, which is connected with the steel structure frame by a weighing device, is arranged below the buffer bin; and a swing type chute with a radial gate, which is arranged on the steel structure frame, is arranged below the quantitative bin, and an anti-wear gratingis respectively arranged on the inner walls of the oblique bin plates of the buffer bin and the quantitative bin. The anti-wear gratings allow the gratings in the bin wall plates to be filled with materials after loading and protect the bin wall plates, and the curvilinear motion formed by the closing of the swing type radial gate can effectively prevent large-particle materials from being stuck and ensure the closing of the gate; and the swing type chute with the radial gate can effectively control rock soil material flow and prevent the rock soil from vertically falling down to cause too great impact on the wagon.

The invention provides a force transmission device which is formed by two semi-disc-shaped components. The two semi-disc-shaped components have the predetermined thickness, and can be combined together to form a cylinder. Grooves penetrating through the semi-disc-shaped components in the thickness direction are formed in the respective combination faces of the two semi-disc-shaped components. After the two semi-disc-shaped components are combined, the two grooves are combined to form a combination hole in smooth transition. The combination hole can be buckled to an installing hole of a tension sensor. In the installing process, the side wall, located in the installing hole, of the combination hole and the inner wall of the installing hole are closely matched in a face contacting mode. External grooves are formed in the respective outer arc parts of the two semi-disc-shaped components in the outer circumferential direction. When the two semi-disc-shaped components are combined to form the cylinder, the external grooves in the two semi-disc-shaped components are in smooth transition in the outer circumferential direction of the cylinder, the sections of the external grooves are of arc shapes, and when installed, steel wire ropes are installed in the external grooves in the mode of being matched with the external grooves.

The invention discloses a moving mechanism locking device and a locking method based on the inverse flexoelectric effect. The locking device includes a support rod arranged on a base, a sensitive unit and a plurality of arc-shaped metal blocks; the support rod is vertical Set on the base, the sensitive unit is a ring structure, which is horizontally set on the top of the support rod; several metal blocks are evenly arranged on the outer ring of the sensitive unit; the outer rings of several metal blocks are provided with annular insulating strips; There is a gap between the ring and the cup inner shell of the rotating device; the sensitive unit is made of flexible dielectric material, and the inner and outer sides of the sensitive unit are respectively plated with inner metal electrodes and outer metal electrodes. The invention is based on the flexoelectric effect in the crystal electromechanical coupling effect, and realizes the position locking of the moving parts. Compared with traditional electromagnets, mechanical buckles or locking screws, it is simple to use, easy to disassemble and assemble, and does not require complicated mechanical structures.

The present invention proposes a fast underground excavation construction method for large-span shallow-buried tunnels, in which, the large section of the large-span tunnel is decomposed into multiple small-section forms by using the middle partition wall and cross braces, and the tunnel is segmented and batched and intermediate prefabricated Excavation by leaving the core soil column reduces the difficulty of full-section excavation of long-span tunnels. Excavation is carried out from the pilot pits on both sides of the upper vault first, which can effectively use the soil arch support effect at the top of the tunnel, and can also be used as a construction channel for subsequent excavation; synchronous and symmetrical excavation on both sides can maintain the force balance during excavation and avoid Uneven stress; the reserved core soil column can be used as the supporting point for the whole construction process to prevent the overall instability and damage of the tunnel; the temporary support of the middle partition and cross brace can ensure the collapse of the top and the expansion and extrusion damage of the side wall and bottom , the supporting structure and construction method proposed by the present invention are safe and practical, with reasonable steps, simple construction, low operation difficulty and efficient process.

The method belonging to CDMA mobile communication area includes following steps. A package data service node (PDSN) selects and joins a cluster group. Each PDSN broadcasts timed or not timed information of own cluster. PDSN records information from other PDSN onto 'cluster PDSN table' and 'cluster MS table'. When a user is switched in a PDSN, the PDSN queries cluster MS table first. If the user is found in the table, the PDSN recommends the user to PDSN just switched in; otherwise, the MS is a new user. PDSN queries cluster PDSN table for new user. A PDSN with most light load is found. The new user is recommend to a PDSN with most light load. The invention realizes load balancing and intelligent selection between PDSNs in cluster so as to prevent unnecessary switching and reduce communication discontinuity in moving procedure.

The invention discloses a gear and rack lifting device. The gear and rack lifting device comprises a driving gear box, a driving gear assembly, a driven gear assembly and an installation rack. The driving gear box, the driving gear assembly and the driven gear assembly are all installed on the installation rack. The driving gear box comprises a driving gear. The driving gear assembly comprises a first external gear, a second external gear and a first climbing gear. The first external gear, the second external gear and the first climbing gear are connected together in sequence in a coaxial manner. The first external gear is engaged with the driving gear. The driven gear assembly comprises a driven external gear and a second climbing gear. The driven external gear and the second climbing gear are connected together in a coaxial manner. The driven external gear is engaged with the second external gear. The first climbing gear and the second climbing gear are arranged side by side. Both the first climbing gear and the second climbing gear are used for being engaged with pile leg racks. According to the gear and rack lifting device, the bearing capacity of a gear and rack lifting systemis improved, and the manufacturing cost and maintenance cost are reduced.

The invention discloses a method for weighing and loading granular goods, in particular the method for weighing and loading coal. In the method, a device consisting of a surge bin, a quantitative bin, a quantitative bin hopper steelyard, a program controlled (PLC) electric automatic control system and a computer monitoring system is adopted. The granular goods are loaded by the method which comprises the following steps of: weighing the weight of goods in the quantitative bin by using the quantitative bin hopper steelyard; controlling hydraulic flat discharge gates of the surge bin and the quantitative bin; and closing a hydraulic flat discharge gate of a lower hopper of the surge bin after opening for 3 to 5 seconds when the quantity of the granular goods in the quantitative bin displayed on the quantitative bin hopper steelyard reaches vehicle loaded quantity. The method makes the loading quantity of a truck bed reach the standard of the vehicle loaded quantity, reduces punishment for contract breach and artificial supplement caused by the deficiency of loaded goods, and improves the accuracy of vehicle loaded goods quantity.