4results about How to "Prevent rollback" patented technology

This invention discloses an integrated fruit and vegetable buffering, grading, and netting device, comprising: a buffering mechanism, a feeding mechanism, a conveying mechanism, a grading mechanism, a netting mechanism, and a fruit unloading mechanism; the buffering mechanism can store multiple fruits and vegetables; the feeding mechanism can import fruits and vegetables picked by a harvester into the buffering mechanism; the conveying mechanism can output fruits and vegetables from the buffering mechanism; the grading mechanism is located on the conveying path of the conveying mechanism and can detect the outer diameter of the fruits and vegetables for grading; the netting mechanism includes a fruit-supporting assembly, a mechanism core, a netting sleeve, a power assembly, and a cutting net assembly; the fruit-supporting assembly can receive the fruit from the conveying machine. The invention proposes an integrated fruit and vegetable buffering, grading, and netting device, which can grade and net fruits and vegetables harvested by a harvester. The device includes a main body, support parts, and adjustment components. The main body is vertically positioned above the fruit-supporting component. Several support parts are rotatably connected to the lower end of the main body. The adjustment components can drive the support parts to rotate outward or inward according to the outer diameter of the fruits and vegetables to adjust the size of the net opening. A power component can drive the net to move downward along the main body to place the net on the fruits and vegetables. A net-cutting component is located between the main body and the fruit-supporting component and can cut the net. A fruit-unloading mechanism can discharge the fruits and vegetables netted by the netting mechanism.

The utility model discloses adjustable length sectional type ribbon, and the utility model discloses a plurality of jack on the ribbon body provides flexible length selection, and the cooperation structure of plug -in rod and jack realizes the mechanical locking of ribbon body, and spring drive plug -in rod automatic insertion jack, need not manual operation to complete locking, and press moving plate can be unlocked, and the operation is simple and quick, after the plug -in rod insertion jack, can effectively prevent the ribbon body to the direction of through -hole no.

The application discloses a foundation pit slope protection and reinforcement device for civil engineering, which comprises at least one slope protection plate, at least one fixed plate, at least one movable plate, two reverse pushing mechanisms, at least one one-way mechanism, an X-shaped connecting rod frame, at least one connecting rod, a first long rod, four butt joints, a second long rod and at least one sliding block. The reverse pushing mechanism, the fixed plate and the movable plate are arranged to effectively support the collapse point in time from the initial small-range collapse according to the characteristics of the foundation pit collapse, the timely support of the collapse point can effectively prevent the collapse of the whole surface of the foundation pit, and the large number of casualties and property losses can be avoided. Furthermore, the first long rod, the second long rod and all the connecting rods are arranged to link all the one-way mechanisms to extend and preventively support the whole pit wall, maintain the shape of the foundation pit, disperse the support force of the single reverse pushing mechanism or the one-way mechanism and increase the overall bearing capacity of the pit wall.

This application discloses a data rollback method, a memory, an electronic device, and a storage medium. Relating to the field of storage, the method is applied to a memory and includes: in response to a snapshot creation instruction, generating snapshot data corresponding to the target data and a primary snapshot mapping table for orienting the snapshot data; constructing a secondary mapping table for orienting the location of the primary mapping table, where the primary mapping table is used to orient the target data; and in response to a data rollback instruction, switching the mapping update operation from the primary mapping table to the primary snapshot mapping table based on the secondary mapping table, and obtaining the snapshot data for data rollback. This application directly switches the mapping update operation from the primary mapping table, which requires data scanning to obtain the data to be recovered, to the primary snapshot mapping table, which can directly locate the snapshot data, for data rollback based on the secondary mapping table. This avoids lengthy data scanning and improves data rollback speed through a hierarchical mapping table.