6results about How to "Protect the load" patented technology

The invention relates to a minimum voltage or loss voltage shunt trip device (1) for a circuit breaker (2). The trip device (1) comprises: a load block (7) electrically connected between the first terminal (3) and the second terminal (5), comprising a load (16) arranged to activate the circuit breaker (2); a protection module (9) comprising: a thyristor (27) and a varistor (29) for overvoltage protection, which are connected in series with one another and in parallel with the load block (7); and a first capacitor (33) connected in parallel with the varistor (29); a fusible element (15) and a first resistive line (11) connected in series with each other between the first terminal (3) and the protection module (9); and-a second resistive line (13) connected between the protection module (9) and the second terminal (5).

The application relates to the technical field of loader load support, and discloses a loader load support device, which comprises a load support frame, a horizontal rod is fixedly arranged at the top end of the inner wall of the load support frame, air cylinders are symmetrically arranged at the bottom of the horizontal rod, an inner hanging frame is connected to the output end of the air cylinders, a plurality of cantilevers are equidistantly arranged on the outer walls of the two sides of the inner hanging frame, and a group of bearing blocks are arranged at the two ends of the bottom of the load support frame. The device is quickly mounted on the loader through a hook, the inner hanging frame is driven to flexibly ascend and descend by the air cylinders, and loads of different heights can be adapted; the cantilevers are matched with anti-skid hooks, loads of various shapes can be stably fixed through multi-angle adjustment and hooking. Meanwhile, a damping system composed of damping springs and the bearing blocks can effectively absorb vibration impact during driving, and the safety of the load is protected. Stable bearing structures are formed by the horizontal rod, inner support rods and other components, the whole device is convenient to operate and functionally integrated, and the safety and applicability of the loader during load transportation are obviously improved.

A rotating sleeve (17), rock drilling machine (6) and method of manufacturing a rotating sleeve. The rotating sleeve is mountable around a shank adapter (8) of a rock drilling machine and comprises several internal teeth (22) provided with opposing first flank surfaces (32) and second flank surfaces (33) for transmitting rotation to the shank adapter. The internal teeth are provided with end reliefs (38, 39) comprising chamfers between the flank surfaces and end surfaces (34) of the teeth.

The utility model relates to the technical field of direct-current power supply application, in particular to a power test circuit, a power utilization module using the same, a controller and a power utilization system. The power test circuit comprises a power supply circuit, a control circuit and a switch circuit. The power supply circuit provides electric energy for the control circuit and the switching circuit; the control circuit judges the available power of the external direct-current power supply by detecting parameters such as no-load voltage and current and voltage during load operation; when it is detected that the load power requirement exceeds the power supply power, the control circuit sends an adjusting signal to the switching circuit, and the switching circuit reduces the output power or controls on-off according to the adjusting signal, so that it is guaranteed that the external direct-current power supply works continuously and stably, and overload damage is avoided. According to the circuit, the load can still obtain moderate power supply in a certain voltage and current range under the condition of insufficient power supply power, the external power supply is protected, the compatibility of electric equipment is improved, and the circuit has the advantages of being simple in structure, low in cost, diversified in application scene and the like.

This invention provides a hydraulically driven artificial muscle robotic arm module and a modular robotic arm. The robotic arm module includes joint links, a root muscle connector, a hydraulically driven artificial muscle, joint connectors, end muscle connectors, and tension springs. The joint links include four links. The joint connectors include a joint shaft, which is mounted on the first link assembly and the second link assembly. The root muscle connector includes a first root connecting block, a second root connecting block, a root support block, a connecting shaft, a root muscle fastening stud, and a root muscle fastening nut. The end muscle connector includes a first end connecting block, a long connecting shaft, an end support block, a second end connecting block, an end muscle fastening stud, and a second end fastening nut. The technical solution of this invention has significant advantages such as high modularity, compact structure, simple control, large joint torque output, and flexible load bearing.

The embodiment of the utility model provides a load protection circuit and an air conditioner, and the load protection circuit comprises a voltage processing circuit which is used for connecting two electrodes of a direct-current power supply, processing the line sequence voltage of the connected direct-current power supply, outputting a first processing signal, and / or outputting a second processing signal when the voltage of the direct-current power supply exceeds a preset voltage. Outputting a second processing signal; the two input ends of the control circuit are correspondingly connected with the two input ends of the voltage processing circuit respectively, the controlled end of the control circuit is connected to the output end of the voltage processing circuit, and the two output ends of the control circuit are used for being correspondingly connected with the positive electrode and the negative electrode of a load respectively. And connecting the negative electrode of the load with the negative electrode of the direct-current power supply, and disconnecting the direct-current power supply and the load according to the second processing signal. Overvoltage protection can be performed on the load, and adaptive adjustment can be performed when the positive and negative electrodes of the direct current power supply are reversely connected, so that the load can be protected.