85results about How to "Prevent deformation or even damage" patented technology

The invention provides an electric winch device of a fire fighting vehicle and belongs to the technical field of fire fighting vehicles. The fire fighting vehicle comprises a pair of vehicle frame girders. The electric winch device comprises an electric winch, a rope guide and a controller, and is characterized by further comprising an electric winch box, a winch base fixing plate and a winch base, wherein the electric winch box is arranged between the pair of vehicle frame girders, an opening is formed in the right side of an electric winch box cavity, the rope guide is arranged on a winch box cavity bottom plate and corresponds to the center of the opening, the winch base fixing plate is located in the electric winch box cavity, corresponds to the left position of the rope guide and is fixed to the winch box cavity bottom plate, the controller is arranged on the upward side of the winch base fixing plate and corresponds to the lower side of the winch base, the winch base is arranged on the winch base fixing plate in a pivoted mode, and the electric winch is arranged on the winch base and is connected with the vehicle-mounted controller in an electrical control mode. Deformation even damage happening to the electric winch in the obstacle removal process is avoided; the structure is simple, and safety is guaranteed; the electric winch device can be reliably fixed to the pair of vehicle frame girders of the vehicle and quickly carried by the vehicle.

The invention discloses a pipeline through-double-layer-wall sound insulation structure and a construction method, and belongs to the technical field of through-wall pipeline construction. The structure achieves sound insulation and sound reduction of the pipeline through-wall. The pipeline through-double-layer-wall sound insulation structure comprises a first casing pipe and a second casing pipe component which arranged outside the pipeline in a sleeving mode, the second casing pipe component comprises an independent first casing pipe body and an independent second casing pipe body, the first casing pipe body is fixed to the fixed wall, the second casing pipe body is fixed to a floating wall, and the second casing pipe body and the floating wall synchronously move. A first sound absorption material layer is arranged between the outer wall of the pipeline and the inner wall of the first casing pipe, and a metal hose joint is arranged at the end, close to the floating wall, of the pipeline. In the construction process, the fixed wall and the floating wall are firstly constructed, the first casing pipe body and the second casing pipe body are buried, the first casing pipe and the pipeline horizontally penetrates through the first casing pipe body and the second casing pipe body in sequence, and the metal hose joint is located at the end close to the floating wall. Finally, the first sound absorption material layer is arranged. The structure can prevent the pipeline in the floating wall from deforming, and the sound insulation and sound reduction effects of pipeline through-wall can be met. The construction method is easy and convenient to operate and shortens the construction period.

The invention relates to a cross-linked polyethylene insulated cable. The cross-linked polyethylene insulated cable includes a positioning core located at the center of the cable, four cross-linked polyethylene insulating sleeves, a tubular metal inner sheath, a tubular buffer protective sleeve and a tubular outer sheath; a space between the metal inner sheath and the four cross-linked polyethylene insulating sleeves is filled with a thermal conduction insulation layer; a thermal conduction protective layer is arranged between the metal inner sheath and the buffer protective sleeve; and a plurality of metal wires which form a structure shaped like a Chinese character "pin" are embedded in the thermal conduction protective layer. With the cross-linked polyethylene insulated cable adopted, a technical defect of sharp deformation or deviation of conductor bundles in an ordinary cross-linked polyethylene insulated cable under external forces such as distortion, torsion, folding, bending and cutting can be eliminated, and normal work of the conductor bundles and subsequent installation and construction can be ensured. Under the effects of the thermal conduction insulation layer, the metal inner sheath, the thermal conduction protective layer and the metal wires, the cable is high in heat dissipation efficiency and excellent in heat transfer effect, the service life of the cable can be prolonged.

The invention relates to the field of clutches, in particular to a clutch assembly of a crane power device. The technical problem to be solved is to provide a clutch assembly of a crane power device with rapid heat dissipation, increased contact area of ​​clutch plates and large shock absorbing stroke. The technical embodiment of the present invention is: a clutch assembly of a crane power device, including a flywheel, a friction disc, a shock absorbing mechanism, a fixed box, an extruding mechanism, a third spring and a clutch plate; the extruding mechanism is arranged in the fixed box , the fixed box is fixedly connected with the flywheel, the friction disc and the shock absorbing mechanism are respectively set to two, the flywheel and the extruding mechanism are respectively provided with a friction disc and a shock absorbing mechanism, and the two friction discs are respectively connected to the flywheel and the extruding mechanism in rotation , the two friction discs are fixedly connected with the two shock absorbing mechanisms, and the two friction discs clamp the clutch plate through the pressing force of the third spring on the pressing mechanism. The invention realizes the rotation buffering of the friction disc and the clutch plate through the damping mechanism.