32results about How to "Shock effective" patented technology

The invention discloses a rock burst preventing method for a blast and injection of water-coupled softened coal body, and is suitable for rock burst disaster prevention of coal mining, and in particular to rock burst prevention of a tight and hard coal bed which is hard to inject water to soften. The method disclosed by the invention comprises the following steps: firstly, constructing water injection holes and blast holes in a coal wall of a lane, wherein the water injection holes and the blast holes are alternately formed, that is, the blast holes are formed between two adjacent water injection holes; then performing loose blasting on the coal body through the blast holes to relieve the pressure of the coal body and form blast gaps in the coal body; and then injecting water into the coal body in the water injection holes to soften the coal body. Gaps are distributed by taking the blast holes as the center in coal body blast, so that the water injection property of the coal body is increased. After blast, the coal body is injected with water, so that the water injection resistance is reduced and the water injection rate is increased; the coal bed which is originally hard to inject water, or even is hardly injected with water to soften, is injected with water to soften, so that the rock burst disaster is effectively prevented. The method is simple to operate, safe and practical and good in pressure relieving effect.

A display panel and a display apparatus are provided. The display panel comprises a plurality of film layers, and is characterized in that the display panel further comprises at least one buffer layer, at least one buffer layer is arranged on any film layer of the plurality of film layers, and a plurality of movable particles are arranged in the at least one buffer layer, and the thickness of thebuffer layer is not less than the thickness of the particles arranged in the buffer layer. When the display panel is impacted, the particles in the buffer layer move, part of the impacting energy is converted into the kinetic energy of the particles, and then part of the impacting energy is released, and then the stress is reduced, and the impacting of the display panel is effectively cushioned. Therefore, when the display panel is impacted, the particulate matter effectively improves the impact resistance of the display panel. As with that display device of the display panel of the present application, the impact resistance is likewise enhance.

The invention provides a system for preparing recycled aggregate from waste concrete on basis of particle impact crushing. Concrete blocks enter a crusher through a conveyor belt for being crushed, then the crushed concrete blocks are screened to be concrete particles through a first vibrating screen, the concrete particles enter a heating furnace to be heated, and the heated concrete particles enter an air abrasion chamber through a first feeding port and are transmitted to a position below an outlet of a particle accelerator by a crawler belt; the air abrasion chamber is further provided with a second feeding port, and air abrasion particles enter the air abrasion chamber from the second feeding port and are lifted by a lifting device to enter the particle accelerator; and the air abrasion particles sprayed out of the particle accelerator collide with the concrete particles, and then mortar on the surfaces of the concrete particles are stripped, so that the high-quality recycled aggregate is prepared.

The invention discloses a front axle of quadricycle, comprising vehicle frame and steering knuckles, which are set on two front wheels respectively. Connecting bodies are hinged on steering knuckles respectively. Elastic support body is set on the vehicle frame. Two ends of elastic support body are hinged with connecting bodies on two front wheels respectively. Adjustable support bodies are hinged between the vehicle frame and connecting bodies. The invention can relief shake impact to quadricycle by road surface effectively in using quadricycle so as to guarantee driver drives and controls quadricycle effectively.

The invention discloses a mountain landslide defending system which comprises a blocking wall with the L-shaped cross section, a sliding limiting groove formed in the front-back direction for left-right limiting of the blocking wall, and damping devices arranged on the rear side of the blocking wall. When the blocking wall is impacted by landslide gravels to slide backwards, the damping devices are used for forwards supporting the blocking wall and provides damping force. The slidable blocking wall is arranged at the slope toe, when a slope landslides, the sliding gravels impact the blocking wall, and the blocking wall is made to slide backwards under the damping force of the damping devices; and accordingly the impact force of the falling gravels on the blocking wall can be greatly reduced, it is guaranteed that the blocking wall bears small uniform impact force and is prevented from being damaged, effective blocking of the falling gravels is guaranteed, and the safety of a road surface is improved. Meanwhile, the construction area of the blocking wall is small, the finished blocking wall can be directly installed and then provided with the damping devices, the installation construction period is short, the cost is low, the structure is simple, and installation is easy.

The invention discloses a mechanical flat cart device with a bumping impact buffering effect. The mechanical flat cart device comprises a main plate frame, a group of damping springs are connected to the upper portion of the main plate frame, a group of insertion rods are welded to the lower portion of a loading plate which covers top ends of the damping springs, a resilience button is mounted on the lower portion of each insertion rod, and each insertion rod is penetratingly provided with a retaining ring. The upper portion of the loading plate is hinged to a framework through a hinge, a handle is detachably connected to one end of the main plate frame, two ends of the lower portion of the main plate frame are matched with mounting frames through two groups of spring dampers respectively, the bottom of each mounting frame is in rotational fit with a wheel carrier through a bearing, and a wheel is rotationally mounted on each wheel carrier. The mechanical flat cart device with the bumping impact buffering effect has advantages that impact force resulted from bilateral collision and vertical bumping can be effectively buffered so as to reduce probability of breakage of goods on the loading plate, a great protective function is achieved, and the goods placed on the loading plate can be prevented from slipping off the loading plate in bumping.

The invention discloses a fixed support of a fuel filter and an automobile. The fixed support comprises a cover and a connecting piece. The fuel filter is fixed to the cover. The cover comprises a bearing portion which is used for bearing the fuel filter. The bearing portion can at least cover one parallel projection plane of the fuel filter. The cover is fixed to a fuel tank of the automobile through the connecting piece. According to the fixed support of the fuel filter of the automobile, the bearing portion is used for bearing the fuel filter; due to the fact that the bearing portion can at least cover one parallel projection face of the fuel filter in terms of the area, the bearing portion can at least protect the face, close to the ground, of the fuel filter in practical use; when sundries on the ground are pressed to fly due to external force and impact on the fuel filter in the use process of the automobile, the bearing portion isolates the fuel filter from the sundries, a protection coasting of the fuel filter can not fall even when bearing impact caused by the sundries, the phenomenon of oil leakage caused by breakdown can not occur, and therefore the fuel filter is effectively protected.

The invention discloses an impact-resistant self-cleaning material transfer point rubber chute lining plate. The lining plate is composed of a rubber lining plate wall and chutes and characterized inthat the rubber lining plate wall is formed by combining a plurality of rubber lining plate bodies end to end and fixed on the wall of the chute through T-shaped bolts; each rubber lining plate body is a double-H-shaped whole body and is formed by composite vulcanization of high-performance rubber and a reinforced fabric framework and composed of a base plate, a bearing plate and binding rib strips; bolt holes are formed in the base plates and fixed on the wall plates of the chutes through the bolts; groove patterns are arranged on the surfaces of the bearing plates in the material feeding direction, and each bearing plate is internally provided with an aramid mesh cloth framework layer; the binding rib strips are connected between the base plates and the bearing plates. The lining plate solves the problem that existing devices are easily destroyed and attached to materials, can be widely applied to transfer points of various transportation material industries, can bear large impact load, has high impact resistance, high wear resistance and a certain self-cleaning capability, and is convenient to install, maintain and replace and high in product service life.

The invention belongs to the technical field of wastewater treatment devices,and in particular relates to an aeration device for recycled plastic particle wastewater. The aeration device comprisesa base, an aeration cylinder is arranged on the base, a motor is arranged at bottom of aeration cylinder, an output shaft of the motor upwards penetrates through the bottom of the aeration cylinder and extends upwards; a clamping block is arranged at the top of the output shaft, a shaft sleeve is arranged on the periphery of the output shaft, a limiting block wrapping the clamping block is arranged atthe top of the shaft sleeve, a conical liquid guide piece is fixedly arranged outside the limiting block, a plurality offixing rings are arranged on the periphery of the shaft sleeve and connected with a stirring rod and a floating ball, a lifting ring is fixed to the bottom of the stirring rod, and the bottom of the lifting ring is connected with a suspender; a limiting piece is arranged at thebottom of the shaft sleeve, and an annular bulge matched with the limiting piece is arranged at the bottom of the aeration cylinder; an annular through groove is formed in the aeration cylinder; the annular through groove is inwards communicated with anair pipeline and aninflation pipe. Compared with the prior art, the aeration device has the advantages that the aeration device is simple and reasonable in structure and easy to maintain, and wastewater in the aeration cylinder is uniformly mixed, so that the dissolved oxygen is in full contact with the wastewater.

The invention provides an active impact resistance mechanism and a mobile terminal. The active impact resistance mechanism comprises a plurality of electromagnetic relays and a front housing. The plurality of the electromagnetic relays are arranged on the front housing. The electromagnetic relay comprises a pedestal, a spring, a support bar, an armature, and an electromagnet and a cushion. One endof the spring, one end of the support rod and one end of the electromagnet are successively fixed on the base. The other ends of the spring and the support rod and one end of the cushion are successively connected to the armature. The other end of the spring and one end of the cushion are fixedly connected to the armature. The other end of the support rod is in shaft connection with the armature.The active impact resistance mechanism and the mobile terminal can realize protection of an electronic device and avoid damages to the electronic device during usage or a reliability test.

The invention discloses a hydrogen fuel cell stack test board convenient to disassemble and assemble, which comprises a first test board and a third test board, and is characterized in that the tops of the inner cavities of the first test board, the second test board and the third test board are fixedly connected with top frame columns; bottom connecting buckles are fixedly connected to the frontface and the back face of the top of the bottom plate and located in inner cavities of the first test board, the second test board and the third test board. The invention relates to the technical field of hydrogen fuel cell stack test equipment. According to the hydrogen fuel cell stack test board convenient to disassemble and assemble, through arrangement of the top frame column and the side frame columns, the top frame column and the side frame columns can be inserted and clamped through cooperation of the top connecting buckles and the side connecting buckles, and through arrangement of theconnecting supporting rods and the telescopic rods; therefore, the top frame column and the side frame columns can be clamped and fixed through the connecting supporting rods in cooperation with thetelescopic rods and the balls, and fixation between the top frame column and the side frame columns is enhanced.

The invention belongs to the field of oil production equipment for oil fields, and particularly relates to a side-mounted sucker rod centralizer. A side face of a centralizer body is provided with a skewed groove and two axial straight grooves, wherein a fixing device which can fix the centralizer body on a sucker rod is mounted in the centralizer body, the fixing device structurally comprises a sliding sleeve, a wave spring washer and a taper sleeve which are arranged from the top down, the side faces of the three are all provided with axially through notches, a section, which corresponds tothe fixing device, of the inner side of the centralizer body is provided with a bar-shaped projection, and the notches of the side faces of the sliding sleeve and the wave spring washer are just filled up with the bar-shaped projection. The conventional nylon centralizer is improved, so that a series of problems, such as 'the probability of sucker rod separation is increased due to the increased number of joint connections', 'the conventional nylon centralizer can be easily worn and broken', 'the conventional nylon centralizer can easily slide on the sucker rod' and 'the conventional nylon centralizer cannot be arranged at any position of the sucker rod accordi The invention discloses a continuous medium- and noncontinuous medium-based Impact-reducing separator for pyrotechnic separation.After gunpowder explodes, a high-energy stress wave is transferred from a solid continuous medium into a multi-path noncontinuous medium of a particle system to destroy the arrangement state of the particle system and form the reconstruction of a contact force of the particle system, so that kinetic energy produced by impact is converted into elastic energy and heat energy of the particle system,blocking the rapid transfer of the high-energy stress wave in the continuous medium. By creating a continuous-noncontinuous medium contact model, establishing a bond effect-based peridynamic method taking long-range force characteristic and 'boundary effect' into consideration and applying the model to analyze the impact reduction effect of the pyrotechnic separator, the impact-reducing separatorcan achieve an obvious impact reduction effect on the basis of less added mass, thus ensuring that the design requirement can be met by pyrotechnic separation structure connection rigidity and fundamental frequency.ng to the requirement of actual operation', are solved.

The invention provides a solid granular food precipitating-filtering device, which comprises a filtering water tank. In the filtering water tank, from top to bottom, a first filter plate, a second filter plate, a third filter plate, a fourth filter plate, and a flow equalizing disc are arranged. The device also comprises a vibration rod and a vibration motor. The vibration rod is vertically arranged in the filtering water tank. The lateral wall of the filtering water tank is provided with a fixing part that is connected to the vibration rod. The upper end of the vibration rod stretches out thefiltering water tank. The lower end of the vibration rod extends to a position lower than the fourth filter plate. The vibration motor is arranged on the upper end of the vibration rod. A first spring and a second spring sleeve the vibration rod. The first spring is arranged between the second filter plate and the third filter plate. The upper end and the lower end of the first spring are abuttedon the second filter plate and the third filter plate respectively. The second spring is arranged between the third filter plate and the fourth filter plate. The upper end and the lower end of the second spring are abutted on the third filter plate and the fourth filter plate respectively.

The invention discloses an ore smelting device and an ore smelting system, and relates to the technical field of ore processing.The ore smelting device comprises a smelting mechanism, a feeding mechanism and an adjusting mechanism, the feeding mechanism can guide and adjust raw materials entering the smelting mechanism, and the adjusting mechanism can adjust the raw materials entering the smelting mechanism; the adjusting mechanism can be used for carrying out auxiliary smelting adjustment on raw materials which are being smelted; and the smelting mechanism comprises a charging barrel, the feeding mechanism is arranged on the charging barrel, the adjusting mechanism is arranged in the charging barrel, and the adjusting mechanism is arranged at the position below the feeding mechanism. The limiting support plate is arranged on the inner adjusting plate, so that one end, far away from the limiting support plate, of the inner adjusting plate falls under the influence of gravity, the adjusted inner adjusting plate forms an inclined shape, namely an inclined plane capable of moving upwards when the inner adjusting plate is adjusted by the limiting support plate, and the effects of effectively changing the position of a raw material in smelting, adjusting or assisting the smelting progress and the like can be achieved.

The invention discloses a side slope protecting device which comprises a blocking wall and a damping device, wherein the cross section of the blocking wall is in an L shape, and the damping device is arranged on the rear side of the blocking wall. In the process that the blocking wall is impacted by landslide sand and gravels and accordingly slides backwards, the damping device is used for supporting the blocking wall forwards and providing damping force. By arranging the blocking wall capable of sliding at the slope toe, when the slope surface slips, the falling sand and gravels impact on the blocking wall, so that the blocking wall slides backwards under the damping force of the damping device, the impact force of the falling sand and gravels on the blocking wall can be greatly reduced, the effect that the blocking wall is subjected to uniform and small impact force is guaranteed, damage of the blocking wall is avoided, the effect that the falling sand and gravels are effectively blocked is guaranteed, and the safety of the road surface is improved. Meanwhile, the construction area of the blocking wall is small, the damping device can be directly placed and installed after the finished damping device is manufactured, the installation period and construction period are short, the cost is low, the structure is simple, and installation is easy.

The invention provides a roller-type composite plate and a method for manufacturing the same. The method includes: using a mixer to stir silicon gel; stirring first powder and the silicon gel for 5 to 20 min to form a first mixture at least including the first powder and the silicon gel; stirring the first mixture and second powder for 5 to 20 min to form a second mixture; at least adding solvent into the second mixture to form a slurry type reaction product; removing bubble from the reaction product; coating the reaction product on a isolation medium at temperature of 80 to 140 DEG C; and curing and drying the reaction product to form the composite plate. Hardness of the roller-type composite plate is in the range from 50 to 70Shore A and thickness of the roller-type composite plate is in the range from 1 to 2mm.

The invention discloses a flush toilet employing wastewater as a water source. The flush toilet comprises: a toilet base having a bowl; a water tank arranged on the toilet base, wherein a partition inside the water tank divides the same into a wastewater zone and a clear water zone below the same, the wastewater zone is connected with a wastewater incoming pipe, and the clear water zone is connected with a clear water incoming pipe; a flushing device for charging water in the water tank into the bowl; a cleaning device for charging a cleaner into the water tank when the flushing device performs flushing and for controlling the water in the clear water zone to rush into the wastewater zone to dissolve the cleaner during flushing. The water tank is divided into the wastewater zone and the clear water zone; it is guaranteed that water left in the bowl finally is clear water, and scaling of the toilet bowl is avoided. The wastewater zone is cleaned to avoid scaling of the wastewater zone.The cleaning device helps effectively prevent insufficient or excessive dissolution of Jie Ce Bao (a toilet bowl cleaner), good cleaning force is guaranteed, and the cleaner is utilized efficiently.

The invention discloses a device for dredging a pipe blocked by initial setting cement paste and a construction method, and relates to the technical field of cement pouring, the device comprises a base provided with a supporting plate at the top, a clamping mechanism arranged on the supporting plate and used for clamping a cleaned pipe, and the clamping mechanism comprises an installation buffering part, two clamping plates and two anti-skid rubber mats. The sounding pipes needing to be cleaned can be fixed to the same position through the clamping mechanism, the sounding pipes are kept stable and not prone to generating relative movement in the process of being impacted and cleaning the interiors, damage to the interiors of the sounding pipes due to movement is avoided, cement solidified in the sounding pipes can be effectively impacted through the impact mechanism, and the cleaning efficiency is improved. The overall mechanism is simple and convenient to use, the flushing pipe flushes water from the top, the water pumping pipe is connected with the low-pressure pump and bound with the balance weight to extend to the dredging portion, the internal cleaning effect is achieved, and the cleaning difficulty of workers is reduced.

The invention belongs to the field of water conservancy projects, and particularly discloses an environment-friendly greening type slope protection device for water conservancy. The environment-friendly greening type slope protection device comprises a protection embankment, a first-stage protection slope, a slope protection channel, a second-stage protection slope and an anti-impact protection structure, wherein the first-stage protection slope, the slope protection channel, the second-stage protection slope and the anti-impact protection structure are distributed on the protection embankment, the first-stage protection slope is arranged on the lower portion of the protection embankment, the first-stage protection slope is a slope protection brick layer, and mud blocking blocks are distributed on the slope protection brick layer at intervals; the slope protection channel is straight and is arranged between the first-stage protection slope and the second-stage protection slope, a soilslope protection net is distributed on the slope protection channel, and grass planting bags are laid on the soil slope protection net; and the second-stage protection slope is arranged on the lateralupper portion of the protection embankment and comprises a soil shaping layer, a rubber anti-corrosion protection layer and a flow slowing layer, and the soil shaping layer, the rubber anti-corrosionprotection layer and the flow slowing layer are sequentially distributed from inside to outside. According to the environment-friendly greening type slope protection device, safety protection of theprotection embankment is achieved through the first-stage protection slope, the slope protection channel, the second-stage protection slope and the anti-impact protection structure, and the safety protection performance of the protection embankment is improved.

The invention discloses an anti-air impact hydraulic system and a control method for a rock drill. It comprises a hydraulic pump station, the hydraulic pump station is connected with a forward feed oil pipe and a reverse feed oil pipe through a feed reversing valve; The shock reversing valve is connected with the shock oil pipe and the low pressure shock oil pipe; a first hydraulic control reversing valve is installed on the oil circuit behind the shock oil pipe, and the hydraulic control end of the first hydraulic control reversing valve passes through the first hydraulic control oil pipe Connected with the forward feed oil pipe, the first hydraulic control reversing valve is connected with the impact oil cylinder; the forward feed oil pipe is connected with the feed oil cylinder through the first reversing valve and the second reversing valve. The hydraulic system controls the impact of the rock drill by the size of the feed pressure, so as to ensure that the rock drill will not run dry, prolong the service life of the equipment and reduce the energy loss.

The invention relates to the technical field of clinical medicine, in particular to a method for improving liquid medicine mixing safety. The method comprises the steps of: S1, adding different drugsinto a medicine bottle at the same time; S2, putting the medicine bottle of S1 into an oscillator; S3, utilizing the oscillator in S2 to mix the drugs in the medicine bottle; and S4, at the end of drug mixing in S3, taking the medicine bottle down. Compared with the traditional hand-operated oscillation, the method provided by the invention can significantly improve the sufficiency and safety of drug mixing, and the use effect is good.

The invention discloses a dynamic simulation device for rock strong impact damage. The device comprises a variable-frequency motor and an impact rotating head, wherein the variable-frequency motor isfixedly mounted on the outer side of the front end of the impact rotating head; an elastic impact rod is arranged at the lower end of the impact rotating head; a fixed sleeve is arranged on the periphery of the outer side of the lower end of the elastic impact rod; and an upper side shell is arranged on the periphery of the outer side of the fixed sleeve. The dynamic simulation device for the rockstrong impact damage is driven by the variable-frequency motor, so that the impact rotating head is conveniently driven to impact the elastic impact rod, and the rock impact state is effectively simulated. In addition, data effects of different impact forces can be effectively obtained according to the frequency conversion state; a pressure detection mechanism on the outer side effectively obtains impact pressure, so that the impact pressure is conveniently converted into the damage degree caused by impact; and an axial circumferential pump mechanism effectively ensures the overall pressure state, so that measurement is enabled to be more accurate. The overall device is simple, and thus the personnel are facilitated to simulate, control and use.

The invention relates to the technical field of oil, and discloses an oil storage tank for oil storage. The oil storage tank comprises a tank body, an oil outlet assembly is arranged on one side of the lower portion of the tank body, a fixing column is fixedly connected to the middle of the top end of the interior of the tank body, the outer surface of the fixing column is movably sleeved with a movable scraping plate, a scraping plate inner block is fixedly connected to the interior of the movable scraping plate, the scraper inner block is close to the fixing column, a movable assembly is movably sleeved in the fixing column, a movable inner block is fixedly connected in the movable assembly, a through hole is formed in the lower portion of the fixing column, and a stirring assembly is movably sleeved on the outer surface of the fixing column located below the movable scraping plate. According to the oil storage tank, the fixing column is arranged in the tank body, and the fixing column is movably sleeved with the movable scraping plate, so that the movable scraping plate is always kept in a state of being flush with the liquid level of oil, the outer ring of the movable scraping plate can effectively clean oil attached to the inner wall of the tank body along with the descending of the liquid level of the oil, and oil waste is prevented.

The invention discloses a rock drill anti-air strike, anti-jamming energy-saving hydraulic system and a control method, which include a hydraulic pump station, and the hydraulic pump station is connected with a forward feed oil pipe and a reverse feed oil pipe through a feed reversing valve; The hydraulic pump station is connected to the impact oil pipe and the low-pressure impact oil pipe through the impact reversing valve; a first hydraulic control reversing valve is installed on the oil circuit behind the impact oil pipe, and the liquid control end of the first hydraulic control reversing valve passes through The first hydraulic control oil pipe is connected to the forward feed oil pipe, and the first hydraulic control reversing valve is connected to the impact oil cylinder; the forward feed oil pipe is connected to the feed oil cylinder through the first reversing valve and the second reversing valve connected. The hydraulic system controls the impact of the rock drill with the feed pressure, so as to ensure that the rock drill will not run dry, prolong the service life of the equipment, and reduce energy loss.

The present application provides a display panel and a display device. A display panel comprising a plurality of film layers, characterized in that the display panel further comprises at least one buffer layer, at least one buffer layer is arranged on any film layer of the plurality of film layers, and at least one buffer layer is provided with several movable particles, the thickness of the buffer layer is not less than the thickness of the particles set in it. When the display panel is impacted, the particles in the buffer layer move, converting part of the impact energy into the kinetic energy of the particles, and then release part of the impact energy, thereby reducing the stress and effectively reducing the impact on the display panel. buffer. Therefore, when the display panel is impacted, the particles effectively improve the impact resistance of the display panel. The impact resistance of the display device using the display panel of the present application is also enhanced.

The invention discloses an anti-collision handrail with antibacterial function and a use method thereof, relates to the technical field of handrails, and aims to solve the problem of poor antibacterial performance of the existing anti-collision handrails. Corner fixing parts are arranged on both sides of the armrest shell, a first transparent outer cover and a second transparent outer cover are respectively arranged between the corner fixing parts, and a front plate is arranged at the front end of the first transparent outer cover and the second transparent outer cover , the rear ends of the first transparent outer cover and the second transparent outer cover are provided with a rear plate, the upper and lower ends of the inner cavity are provided with a fixed rod, and a sliding sleeve is installed on the outside of the fixed rod, and the fixed Both sides of the outside of the rod are provided with first springs, an installation box is arranged at the middle position inside the inner cavity, and a timing power supply and a single-chip microcomputer are respectively arranged in the inside of the installation box, and the inside of the first transparent outer cover is fixedly arranged There are atomizing nozzles, and several atomizing nozzles are provided, and the rear end of the rear plate is provided with a support seat.

The invention relates to cotton spinning processing equipment, in particular to a sound insulation cotton opener of a car sound insulation felt. The opener comprises a housing, a conveying mechanism, a tearing mechanism, and a cleaning mechanism. The conveying mechanism, the tearing mechanism, and the cleaning mechanism are arranged in the housing. A slackening mechanism comprises a high-pressure air spaying nozzle, an ice-making and ice-breaking mechanism and a feed blocker. The air-spraying direction of the high-pressure air spaying nozzle is horizontally tangent to the top of a discharge end of a needle plate conveying belt; the ice-making and ice-breaking mechanism comprises an ice-making member and an ice-breaking member; the ice-making member is communicated with the ice-breaking member; the feed blocker is located on the air-spraying direction of the high-pressure air spaying nozzle. The sound insulation cotton opener of the car sound insulation felt is used to solve the problem that in the prior art, the opener slackens by using high-pressure air flow, which causes insufficient releasing of fiber blocks and aims to provide the opener capable of enhancing the slackening strength of the airflow.

The invention discloses a mountain landslide defending system which comprises a blocking wall with the L-shaped cross section, a sliding limiting groove formed in the front-back direction for left-right limiting of the blocking wall, and damping devices arranged on the rear side of the blocking wall. When the blocking wall is impacted by landslide gravels to slide backwards, the damping devices are used for forwards supporting the blocking wall and provides damping force. The slidable blocking wall is arranged at the slope toe, when a slope landslides, the sliding gravels impact the blocking wall, and the blocking wall is made to slide backwards under the damping force of the damping devices; and accordingly the impact force of the falling gravels on the blocking wall can be greatly reduced, it is guaranteed that the blocking wall bears small uniform impact force and is prevented from being damaged, effective blocking of the falling gravels is guaranteed, and the safety of a road surface is improved. Meanwhile, the construction area of the blocking wall is small, the finished blocking wall can be directly installed and then provided with the damping devices, the installation construction period is short, the cost is low, the structure is simple, and installation is easy.