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

The invention provides a collision protecting device of a power battery pack body. The collision protecting device comprises a first mounting plate and a second mounting plate, wherein the first mounting plate is arranged above the second mounting plate, the second mounting plate slides along the lower surface of the first mounting plate, the first mounting plate is fixed on an auxiliary frame, and the second mounting plate is connected with a vehicle body bracket.The first mounting plate (namely upper mounting plate) is mainly used for forming a plane on the bottom of the vehicle, the second mounting plate (namely lower mounting plate) is mainly used for separating from a vehicle body after collision with a barrier, so a sliding rolling log is formed between the barrier and the whole vehicle, the whole vehicle slides relative to the barrier, and through the whole sliding and friction process, the direction of the impact force is changed continuously and the impact force is reduced.

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 a flushing preventing valve with a single hydraulic prop, and belongs to the technical field of roadway supporting of a coal mine. The flushing preventing valve has a flushing preventing function, can quickly absorb impact energy, and has a function of lifting and lowering the prop, a function of preventing flushing and absorbing energy in a static-pressure and dynamic-pressure manner and a remote control function. The flushing preventing valve comprises a left valve body and a right valve body, wherein a left division plate and a right division plate are arranged in the left valve body and the right valve body; a control valve element is arranged in the left valve body and the right valve body and comprises an ejector rod, a throttling supporting piston, a buffering piston, a guiding body and a spring; a through hole of the left division plate is blocked by the left end of the ejector rod; the right end of the ejector rod is arranged in a through hole of the right division plate; the throttling supporting piston and the buffering piston are respectively arranged on the left side and the right side of the ejector rod; a prop liquid injecting opening is formed in the side wall of the left valve body; the guiding body is arranged in the right valve body and consists of a chassis and a guiding barrel; an ejector pin is arranged on the left end surface of the chassis; a right valve body bonnet is arranged at the right end of the right valve body; and a handle fixing seat is arranged on a pressure-adjusting rotating wheel and is hinged to the handle.

The protective cover includes frame and dust prevention curtain, supporting rack on the frame. Frame and supporting rack together form an open type cover body to accommodate TV set. Winding shaft and rotation control set of the winding shaft are setup on the frame, and one end of the dust prevention curtain is fixed on the winding shaft. The frame structure of the dust prevention curtain provides enough rigidity to protect TV set from impact. Decoration picture can be printed on or cleaning brush can be setup on the dust prevention curtain. Thus, the dust prevention curtain possesses effects of protection and dust prevention as well as function of decoration. The invention is suitable to liquid crystal, plasma (LCD, flat) TV, or back projection TV.

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.

The invention discloses an anti-impact energy absorber for a hydraulic support, and belongs to the technical field of roadway supporting equipment. The anti-impact energy absorber for the hydraulic support comprises an upper cylinder cover, a cylinder barrel and a lower cylinder cover which are sequentially connected from top to bottom, a spring, an upper piston, an energy absorption box and a lower piston are sequentially arranged in the cylinder barrel from top to bottom, a first through hole is formed in the middle of the upper piston, emulsion enters the upper portion of the upper piston through the first through hole, the lower cylinder cover is fixedly connected with a liquid discharging pipe, the upper portion of the liquid discharging pipe penetrates through the lower piston and extends into the energy absorption box, a second through hole is formed in the top of the liquid discharging pipe, and a third through hole is formed in the upper portion of the side face of the liquid discharging pipe. The anti-impact energy absorber for the hydraulic support is separated from the hydraulic support, the pressure of impact load on the hydraulic support can be reduced when rock burst occurs, the pressure of a hydraulic support column is within the bearable range of the support column, the supporting performance and the energy absorption and anti-impact capacity of the hydraulic support are improved, and the stability of a roadway is maintained.

The invention discloses an interstage cold separation structure of a carrier rocket. The interstage cold separation structure comprises a front cabin body, a rear cabin body, and a separation spring assembly. The tail end of the front cabin body is connected with a separation spring ejector rod support. The front end of the rear cabin body is connected with the tail end of the front cabin body through an interstage separation connection unlocking device; and the rear cabin body is connected with a separation spring support base corresponding to the position of a separation spring ejector rod bracket; the interstage separation connection unlocking device is used for locking the front cabin body and the rear cabin body and unlocking the front cabin body and the rear cabin body after receiving a separation instruction. The separation spring assembly is elastically supported between the separation spring support base and the separation spring ejector rod bracket and is provided with an elastic piece for providing a separation impulse for the front cabin body and the rear cabin body. Since the separation spring assembly is arranged between the front cabin body and the rear cabin body, when the interstage separation connection unlocking device is disconnected under fire work, the elastic piece of the separation spring assembly generates an acting force for driving the front cabin body and the rear cabin body to be away from each other, so that the separation speed of the front cabin body and the rear cabin body is increased, and the safety during rocket body separation is improved.

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 discloses a ventilated dustproof protection plate for an automobile engine. The protection plate comprises a protection plate body, wherein a plurality of mounting and positioning holes are formed in an outer lateral end surface of the protection plate body; air inlet pipelines are arranged at the bottom of the protection plate body; upper ends of the air inlet pipelines communicate with the inner part of the protection plate body; a dustproof cover is also arranged at the upper end of each air inlet pipeline; an air guiding plate body is mounted between each air inlet pipeline and the protection plate body; a plurality of air guiding plates which are obliquely mounted are arranged on each air guiding plate body. Through the manner, the protection plate disclosed by the invention can protect the engine from being damaged due to collision, and can perform heat dissipation on the engine through the wind speed generated when the automobile runs; the protection plate is compact in structure, dustproof, and convenient to mount.

The invention discloses a novel unmanned aerial vehicle with fan blade protection covers. The novel unmanned aerial vehicle comprises an unmanned aerial vehicle body and high-speed motors fixedly mounted on the unmanned aerial vehicle body. A fan blade is arranged at the upper end of each high-speed motor. A clamp groove is formed in the side face of each high-speed motor. Rod joints are arranged in each clamp groove. A mounting rod is arranged on each rod joint. A protection ring is arranged on the heads of the mounting rods of each high-speed motor. A protection cover is arranged on each protection ring. Each rod joint comprises a sphere and a barrel. A first mounting hole is formed in each barrel, and second mounting holes are formed in the side face of each protection ring. According to the novel unmanned aerial vehicle with the fan blade protection covers, the protection rings are additionally mounted on the outer portions of the fan blades, and the fan blades can be effectively protected against impact damage of foreign bodies; meanwhile, the protection covers are arranged at the upper ends of the protection rings in a sleeving manner, and tree leaves and other sundries can be prevented from falling into the protection rings and influencing rotation of the fan blades; and safety is high, and practicality is good.

The invention relates to a bearing device capable of meeting safe falling off of a fall-off type flywheel. The bearing device is composed of a bottom plate, a welding tray, an engaged tray, a dampingplate, damping pins and the like. The bearing device is compact in structure, and is firmly fixed under the flywheel by a welding and engaged mode. When an overspeed accident occurs to a main pump driving motor of a nuclear power plant, the fall-off type flywheel falls off, the copper damping pins which are arranged on the surface of the bearing device are in contact with and friction with the flywheel, through the loss of the copper damping pins, the flywheel is safely slowed down to stop, and the function of bearing the flywheel is achieved. After the main pump driving motor stops safely, the damping pins can be replaced and the bearing device can be reinstalled and put into use, so that the maintenance time and maintenance cost after the nuclear power plant accident are reduced greatly.With the construction and popularization of nuclear power plants and the use of civil high rotary inertia, high safety vertical asynchronous motors in more fields, the bearing device capable of meeting the safe falling off of the fall-off type flywheel can be widely used in the nuclear power, chemical industry and other fields, and broad application fields and market prospects are achieved.

The present invention provides an oxygen concentrating device easy to assemble and able to reduce production costs. The oxygen concentrating device (101) comprises a plurality of components including an adsorbing tube (102) storing adsorbent capable of selectively adsorbing nitrogen contained in material air, a storing tank (103) for temporarily storing concentrated oxygen gas generated in the adsorbing tube (102), a gas transferring means (104) for transferring material air, concentrated oxygen gas or exhaust gas, a solenoid valve (106) for opening / closing or switching a gas flow path connected to the adsorbing tube (102), and a control means (108) for controlling the gas transferring means and / or the solenoid valve, resin supports (109) for positioning and supporting the plurality of components at specified locations, and a plurality of resin covers (110) covering the outer sides of the supports (109), the supports (109) being formed by injection molding.

The invention relates to a built-in type safety valve. The built-in type safety valve comprises a valve body, a valve blade and a spring pressure setting device. The built-in type safety valve is characterized in that the valve blade is of a circular barrel type structure which is upwards opened, wherein a valve blade sealing surface which is salad to a valve seat sealing surface is arranged on the upper end surface of the circular barrel; the spring pressure setting device is mounted in an inner cavity of the circular barrel, and the spring pressure setting device comprises an adjusting sleeve, a piston, a piston rod and a spring; an inner hole of the adjusting sleeve is in sealing fitting with the outer circle surface of the piston rod; a sealed spring cavity is formed among the upper end surface of the piston, the lower end surface of the adjusting sleeve, the outer circle surface of the piston rod, and the inner wall of the circular barrel of the valve blade, and a spring is mounted in the spring cavity; a pressure chamber is formed between the lower end surface of the piston and the bottom part of the circular barrel of the valve blade, and the pressure chamber communicates with an inner chamber of a tank body through the center of the piston rod and a pressure guide hole in the valve body; and the spring cavity communicates with the outer side of the tank body through breathing holes in the piston rod and the valve body. The built-in type safety valve has the advantages of being long in service life, accurate in setting pressure, small in water hammer, reliable in sealing performance, and small in mounting space.

The invention discloses an impact-resistant bus duct, which comprises a conductor, an inner shell and an outer shell arranged sequentially from the inside to the outside, the conductor is covered with an insulating layer, and the inner shell is filled with radiation cross-linked flame-retardant Polyolefin insulating plastic, there are several spherical supports between the inner shell and the outer shell. In the solution of the present invention, a plurality of spherical supports composed of two large and small elastic spheres are arranged between the outer shell and the inner shell. When the outer shell is impacted by an external force, the spherical supports are compressed to produce elastic deformation, absorb the impact force received and react to the impact force The source, the elastic material filled between the outer shell and the inner shell, and the flame-retardant elastic material filled in the inner shell, the entire bus duct has high strength and certain elasticity, and has good impact resistance, so that the bus duct is free from impact damage , it is worth popularizing and applying.

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 provides a solar energy shinning badminton. The solar energy shinning badminton comprises feather pieces, a badminton head and a coil, the feather pieces are coiled into a cone-frustum ring through the coil; the feather pieces and the badminton head are detachably connected into a whole through a threaded connector; the badminton head is provided with a shinning body; the shinning body is electrically connected with a solar cell panel; the solar cell panel adopts a semi-spherical plastic shell as a carrier, surrounds the upper portion of the badminton head and is arranged on theside wall of the outer periphery of the badminton head; the solar cell panel is fixedly installed on the side wall of the outer periphery of the semi-spherical plastic shell; the outer side of the solar cell panel is wrapped by an elastomer layer; the elastomer layer is provided with multiple through holes providing transmitting light for the solar cell panel. The solar energy shinning badminton provides convenience when people play the badminton at night; the badminton head can be detached and replaced; solar energy is used for supplying power to the shinning body, so that energy saving and consumption reduction are realized; the service life of the badminton is easily prolonged.

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 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 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 vibration damping and energy dissipation limiting device for a water diversion steel pipe bearing of a hydropower station. The device aims at solving the problems that the transverse deflection of a steel pipe of the existing built power station is excessive, and buttress concrete is cracked up by a limiting baffle easily. The vibration damping and energy dissipation limiting device comprises an anti-collision plate arranged on the inner side face of a buttress, wherein a limiting landing leg is arranged between the anti-collision plate and a supporting ring of a water diversion steel pipe; one end of the limiting landing leg is fixed on the supporting ring; the other end of the limiting landing leg is a free end; and a vibration damping pad is mounted at the free end. With the adoption of the device, transverse loads of the bearing and the steel pipe due to an earthquake effect and a water shock wave in the steel pipe are reduced greatly; earthquake damages are reduced; the harmful excessive deflection generated by the steel pipe is limited effectively; and the adverse effects due to the fact that a transverse limiting design gap of the steel pipe is difficult to guarantee caused by a steel pipe mounting error during a construction process are eliminated.

The invention belongs to the field of bridge flood control devices, and particularly relates to a bridge flood control device. The bridge flood control device comprises a machine body, wherein bridge pier protection components are arranged on the two sides, which face the water flow direction, of the machine body respectively, water supply pressurization components are arranged in the directions, away from the ground, of the bridge pier protection components, bridge floor fixing components are arranged in the directions, away from the ground, of the water supply pressurization components, pressurizing backflushing components are arranged on the sides, away from the ground, of the bridge floor fixing components, a water level detection rod is slidably arranged between the bridge pier protection components on the two sides of the machine body, and a floating block is fixedly arranged on the side, close to the ground, of the water level detection rod.

A shippable liquid storage and dispense device comprising a collapsible liner disposed within a container, the shippable liquid storage and dispense device having a Dispensing head, suitable for handling oxygen and moisture sensitive materials. The dispense head includes a pressurized gas passage, a pressurized gas valve, a liquid passage, a liquid valve, a lined gas passage, and a lined gas valve, each of which may have an associated quick connect fitting. The dispensing head remains attached to the container during inert gas purging, liner filling, container shipping and liquid dispensing. During shipment of the coupled dispensing head and container, a pressurized inert gas may be maintained in the liner, covering the liquid-containing material. The container may have an extended chime to provide a protective area that accommodates the entire dispensing head.

The invention relates to a bridge deck pavement structure based on the high-performance rubber concrete, which comprises a rubber cement concrete cast-in-place layer, an SBR modified emulsified asphalt waterproof layer and an asphalt concrete surface layer which are laid on a bridge deck from bottom to top, and a single-layer two-way reinforcing mesh is preset in a tension region of the rubber cement concrete cast-in-place layer. The bridge deck pavement structure has the beneficial effects that the bridge deck pavement structure has good anti-seepage and anti-cracking performance, proper strength and good economic and technical benefits, when the bridge deck pavement structure is applied to engineering, the deformation resistance and the driving comfort can be improved, a beam body is protected against the rain erosion frost heaving effect, the service life of the bridge deck pavement structure is prolonged, and the maintenance and later maintenance cost is reduced.

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.