5results about How to "Avoid undervoltage" patented technology

The utility model discloses a riveting press for a transmission shaft with a quick-change connector, and relates to the field of machining and assembling. Comprising a riveting press body, a riveting press working device, a riveting head, a sliding buckle, a limiting column and a pressure sensor. The riveting head is installed below the riveting press working device, the riveting press working device and the riveting head are connected through the sliding buckle, rapid disassembly and assembly of the riveting head are achieved, the limiting column is used for fixing the riveting head, riveting stability is ensured, manual installation errors are reduced, and replacement efficiency is improved. The pressure sensor is arranged below the riveting head, the pressure value in the riveting process can be monitored in real time, the pressure sensor is in linkage with the control box for feedback adjustment, it is ensured that the pressure of each riveting point is consistent, and the riveting quality and the product reliability are improved.

The application provides a paper pressing elastic structure and a paper shredder. The paper pressing elastic structure comprises a first seat, a second seat, a first elastic member and a second elastic member. The top end of the first seat is configured to be close to a cover plate; the top end of the second seat is located in the first seat and is configured to be movable upward relative to the first seat; the top end of the first elastic member is configured to be close to or contact the cover plate, and the bottom end of the first elastic member is arranged on the top end of the second seat and is limited in the horizontal direction by the first seat; the top end of the second elastic member abuts against the bottom end of the second seat, and the bottom end of the second elastic member is configured to be arranged on a paper pressing plate of the paper shredder; and the stiffness coefficient of the first elastic member is smaller than the stiffness coefficient of the second elastic member. By reducing the stiffness coefficient of the first elastic member at the upper level, the first elastic member can provide a larger stroke amount compared with the second elastic member under the same pressure, so that the pressure on the bottom layer of paper can be reduced in the case of multiple papers, and the friction between the papers when the rollers are rubbing the papers can be reduced, thereby facilitating the rollers to rub the papers.

The invention relates to the technical field of fluid control, in particular to an electric control prefill valve and a control method thereof.The electric control prefill valve comprises a valve body, a priority valve, an electromagnetic valve, a pressure sensor and a selector valve, the valve body is provided with a main oil way, a prefill opening and an unloading opening, the priority valve, the electromagnetic valve and the selector valve are sequentially arranged along the main oil way and communicate with one another, and the prefill opening communicates with the priority valve; an oil return port of the electromagnetic valve is communicated with the unloading port; the pressure sensor comprises a lower limit sensor and an upper limit sensor; the sensing end of the lower limit sensor is communicated with the main oil way; the upper limit sensor is vertically arranged above the valve body, and the sensing end of the upper limit sensor is communicated with the main oil way. The hydraulic system has the advantages that the hydraulic system pipeline is simplified, the leakage risk is reduced, the hydraulic pressure at the working oil port can be adjusted according to the actual situation, and the energy utilization efficiency, the response speed and the reliability of the braking system are remarkably improved.

The utility model relates to a pre -compression damping device for precision equipment transportation belongs to transportation damping technical field, the utility model discloses a damping unit, the damping unit includes the upper steel sheet and lower steel sheet of opposite setting, is equipped with the damping pad between the upper steel sheet and lower steel sheet, is equipped with the pre -tensioning piece for adjusting the pre -compression amount between the upper steel sheet and lower steel sheet. The utility model is through the semi -closed cavity for the constraint polyurethane foaming board can only occur vertical direction's deformation, thoroughly solves the lateral rheology problem, through the pre -compression technology matching equipment weight distribution, and the different pre -compression amount is added to the damping unit of different position in array, makes all damping units to best working condition cooperation stress, avoids local overload failure.

This utility model discloses a synchronous crimping device for terminals at both ends, including a base and a crimping module. The crimping module includes a pressure-applying device, an upper die head, and a lower die base. The upper die head includes two die pieces arranged side by side, each die piece fixed to a corresponding mounting base. The mounting base is located at the lower pressing end of the pressure-applying device, and an elastic balancing pad is provided between the mounting base and the lower pressing end to balance the crimping force when the die pieces are pressed against the lower die base. In this utility model, the upper die head, including two die pieces arranged side by side, can simultaneously crimp two terminals at the same end of the wiring harness, improving crimping efficiency; and the elastic balancing pad provided between the mounting base and the lower pressing end can balance the crimping force when the die pieces are pressed against the lower die base, improving crimping quality.