40results about How to "Protected from impact damage" patented technology

The object is to provide an axial air gap type electric motor in which even if a large force to some extent is added to the vertical direction to the rotor output axis, the bearings don't damage and its long lifetime is realized. The axial air gap type electric motor comprises a stator and two rotors each of which is configured almost with a discoid shape and which are arranged as facing an identical rotation axis (rotor output axis) with a fixed gap. Said stator has a stator core comprising multiple pole members connected annually and one of the bearings for fixing the rotor output axis is installed inside said stator configured annually and another bearing is installed on the rotor output axis between the outside of said rotor and the load connected.

The invention discloses a temperature resistance and heat absorption protection structure applied to the inside of a high temperature blasting hole. The temperature resistance and heat absorption protection structure comprises a blasting device, a water absorbent layer, a pervious material layer, an impervious material layer and a fire resistance and thermal insulation material layer. The pervious material layer enables the water absorbent layer to be fixed on the outer surface of the blasting device. An integrated structure formed by the blasting device, the water absorbent layer and the pervious material layer is placed into the impervious material layer, the fire resistance and thermal insulation material layer is arranged on the outer surface of the impervious material layer in a sleeving mode, and liquid is injected into the gap between the pervious material layer and the impervious material layer. The temperature resistance and heat absorption protection structure overcomes the defects that the potential safety hazards for blasting a high temperature burning area are large, and liquid in a temperature resistance and thermal insulation jacket is likely to run away under the condition that the outer layer structure is damaged, and the severe construction environment requirement at the field can be met; in addition, the structure is suitable for charging blasting with the temperature of the blasting hole being higher than 120 DEG C, and the structure not only is suitable for protecting detonating cords but also is suitable for industrial explosives.

The invention relates to an adaptive torque-balance differential pressure drill bit which comprises a reaming drill bit, a conversion connector, a pilot drilling bit and a torque transmission device, wherein the conversion connector, the pilot drilling bit and the torque transmission device are integrally connected. The reaming drill bit is positioned between the conversion connector and the pilot drilling bit and mounted on the outer side of the torque transmission device, the torque transmission device comprises a first transmission part, a transmission part, a second transmission part and a limit part, the first transmission part, the transmission part and the second transmission part are sequentially connected, the first transmission part is connected with the conversion connector, the second transmission part is connected with the pilot drilling bit, at least one stop part is arranged on the transmission device, the limit part is connected with the stop parts and arranged on a crown of the reaming drill bit, and a first elastic part matched with the stop parts is arranged between the stop part and the crown of the reaming drill bit and used for transferring part of rock breaking torque and buffering torque fluctuation of the reaming drill bit. According to the drill bit, torque fluctuation of the drill bit can be adaptively controlled in the drilling process, torsion impact vibration caused by sticking slip is relieved and even avoided in the drilling process, combination between the drill bit and a bottom drill tool is protected, and drilling is accelerated.

The invention relates to a self-tipping semi-trailer which comprises a frame, axles, an electric system and an air circuit system, wherein the frame is connected with the axles, and the electric system and the air circuit system are used for controlling power. A slippage device is arranged among the frame and the axles and comprises a guide rail, a sliding rail, positioning blocks and fixing pins, the guide rail and the sliding rail are connected with each other, the positioning blocks are arranged at two ends of the sliding rail, the fixing pins are used for fixing the guide rail and the sliding rail, the sliding rail is welded at the bottom of the frame, and the axles are fixed at the bottom of the guide rail. The self-tipping semi-trailer realizes larger inclination magnitude as compared with a frame directly inclined at the same height by a simple optimized structure, cargos are more conveniently and rapidly loaded and unloaded, a bearing platform and the cargos can be smoothly stressed and cannot be damaged due to impact, safety of the cargos, the semi-trailer and workers in the cargo loading and unloading process is guaranteed, loading and unloading efficiency and transporting efficiency are sufficiently improved, the cost of manpower and material resources is saved, and the self-tipping semi-trailer is applicable to the field of cargo loading, unloading and transporting, and particularly suitable for popularization and application in relevant fields of wreckers, emergency service vehicles and the like.

The invention belongs to the field of coal mine tunnel support technology, and relates to an adjustable double-resistance energy-absorption anti-impact hydraulic support frame, in particular to an adjustable double-resistance energy-absorption anti-impact hydraulic support frame applied to a coal mining area with deep impact ground pressure. The adjustable double-resistance energy-absorption anti-impact hydraulic support frame carries out abdicating and pressure relief through hydraulic safety valves under a static load condition and carries out abdicating and shock absorption through energy-absorption top beams under a dynamic load condition. The adjustable double-resistance energy-absorption anti-impact hydraulic support frame comprises a front top beam, a rear top beam, connection bodies and hydraulic support pillars, wherein the front top beam and the rear top beam are respectively composed of an upper box-type beam, a lower box-type beam, upper friction plates and lower friction plates, a plurality of the upper friction plates are vertically arranged at the lower end of the upper box-type beam, a plurality of the lower friction plates are vertically arranged at the upper end of the lower box-type beam, a plurality of through holes are formed in each upper friction plate, a plurality of second through holes are formed in each lower friction plate, fastening bolts are respectively arranged in the through holes and the second through holes, the hydraulic support pillars are arranged under the top beams, and the connection bodies are respectively arranged between two oil cylinders of the hydraulic support pillars at the same side of the front top beam and the rear top beam.

The invention discloses an attached type totally-enclosed safety protection shed for overpass highway hanging basket construction. A hanging basket is included; a bottom plate is arranged at a lower beam end of the hanging basket; a plurality of electricity-proof plates are arranged at the lower end of the bottom plate; vertically-placed damping pieces are arranged between a hanging basket upper cross beam and the bottom plate, side plates are arranged on two sides of the bottom plate, a water tank and a warning lamp are fixedly connected to lower ends of the electricity-proof plates, a watercollecting groove is formed in the bottom plate and communicated with the water tank through a water inlet pipe, and drainage pipes are arranged on two sides of the water tank. A base is welded on a cross beam at the bottom of a hanging basket; the base is welded with short rods and long rods; the short rods and the long rods are connected with the electricity-proof plates through bolts; the two sides of the bottom plate are fixedly connected with the lower ends of side plates through connecting blocks and the large bolts, and the upper ends of the side plates are connected with side rods of the hanging basket through connecting plates and bolts; detachable connection of construction building materials can be achieved through bolt connection, secondary or multiple cyclic utilization can beachieved, such that raw materials are saved, and the environment is protected.

The invention discloses a throwable scout robot comprising a car module and motion modules mounted on two sides of the car module. The car module is made of rubber, driving motors are mounted on two sides of the car module and drive transmission mechanisms composed of belts and transmission wheels so as to transmit power, and motion wheel trains on the transmission mechanisms can rotate. The driving motors and the transmission mechanisms are arranged in grooves of the car module. The motion modules and the car module are connected through skirts of the car module and connecting main boards of the motion modules, so that flexible connection is realized. The car module is provided with a plurality of form cavities used for mounting task loads inside. The throwable scout robot has the advantages of compact structure and the advantages that impact caused by falling can be resisted by its structure so as to prevent damage and complete subsequent scout tasks within a throwing height range (throwing height of an object of 2kg is approximate to 6 meters) of a normal adult.

The invention provides pressure stabilizing and laminating water supply equipment. An air holding cavity and a piston positioned in the air holding cavity are arranged above an opening of a pressure laminating tank. By using the transmission principle of the piston, when the water supply equipment is halted or power fails, the air holding cavity is closed by the piston, so that the water fluid shock wave generated by a downstream pipeline is effectively prevented from downwards moving to the pressure laminating tank, and a water pump and a motor system in the pressure laminating tank are protected from being damaged by the water fluid shock wave. When the water supply equipment is restarted, a certain pressure is generated in the pressure laminating tank; and when the pressure is greater than the water pressure in the air holding cavity, the piston is opened, and the water fluid in the pressure laminating tank flows to the downstream pipeline so as to meet the water using requirements of downstream users.

The invention discloses a heavy type plate feeder, and belongs to the technical field of mining machines. The heavy type plate feeder comprises a base, cross beams, caterpillar track guide wheel seats, caterpillar track guide wheels, a raw mineral material conveying mechanism and a caterpillar track wheel shaft. The raw mineral material conveying mechanism comprises a pair of caterpillar track plate traction chains and a set of caterpillar track plates, a pair of caterpillar track wheels is sleeved with the caterpillar track plate traction chains, and a caterpillar track tensioning mechanism is arranged at the right end of the base. The heavy type plate feeder is characterized in that every two cross beams arranged on the upper portion of the base are adopted as a group, cross beam limiting frames are fixed to the base, a shock pad barrier strip and shock pads are further arranged on the base, the two ends of each cross beam are arranged on the shock pads, and shock pad blocking and protecting mechanisms are fixed to the positions corresponding to the shock pads. The caterpillar track tensioning mechanism comprises a support cross beam, a first support cross beam longitudinal arm, a second support cross beam longitudinal arm, an adjusting screw rod, a spring and an adjusting nut. The heavy type plate feeder is beneficial for protecting the raw mineral material conveying mechanism, the cross beams and the base against impact failures, and a caterpillar track wheel bearing pedestal can be reliably tensioned and located at the adjusted position.