32results about How to "Guaranteed bearer" patented technology

The invention discloses a safety protection method used for explosion and destruction of waste explosives. The waste explosives are arranged in a specific explosion and destruction apparatus. The specific explosion and destruction apparatus comprises a main body structure (1) arranged on a foundation structure (5). Both the main body structure (1) and the foundation structure (5) are made of reinforced concrete. A sandy soil protection layer (6) is arranged on the foundation structure (5) in the main body structure (1). A lining structure (7) is arranged on the inner wall of the main body structure (1). According to the method, shock waves generated by the explosives can be effectively absorbed and reduced through structural design, the destruction effect of fragments is controlled to prevent explosion fragments from flying off, and the service life of a facility is prolonged by replacing the lining.

The invention discloses a base made of composite materials. The base comprises an upper end cover and a lower end cover. The upper end cover comprises an upper annular end cover body and a big-end-down first cone arranged below the upper end cover body. The lower end cover comprises a lower end cover body and a big-end-up second cone arranged above the lower end cover body. A cylinder is arranged between the upper end cover and the lower end cover. The inner wall of the upper portion of the cylinder is in close fit with the outer wall of the first cone, and the inner wall of the lower portion of the cylinder is in close fit with the outer wall of the second cone. A reinforcing rib is arranged at the position, below the upper end cover, on the outer side of the cylinder. The upper end cover, the cylinder, the reinforcing rib and the lower end cover are all made of composite materials. In addition, the invention further discloses a manufacturing method of the base made of the composite materials. All the portions of the base made of the composite materials are made of the composite materials, and the base made of the composite materials has the advantages of being high in axial rigidity, good in heat stability under the space high-low temperature environment, small in negative quality, high in modularization degree, good in reliability, excellent in overall performance and the like.

A large box plate type communication cabin structure is geometrically divided into partition plates and outer plates from inside to outside, and a cabin space is divided into a lower cabin, a middle cabin and an upper cabin from bottom to top by two layers of horizontal plates. From the assembling relation, the lower cabin partition plate, the middle cabin partition plate, the two layers of horizontal plates and the south and north outer plates are not detachable, and an inner framework with the general assembly modularization manufacturability is formed. The upper cabin partition plate and the opposite floor are non-detachable, so that an antenna cabin structure with local general assembly modularization manufacturability is formed; ten east-west plates, the antenna cabin structure and the inner framework are mutually detachable; in the aspect of a force transmission system, large-mass loads of the communication cabin are mainly distributed on east, west, south, north and earth outerplates, and the large-mass dispersed loads are gradually concentrated from the outer plates and finally gathered to platform cabin connectors of the communication cabin. The communication cabin structure provided by the invention provides a cabin body outer surface load mounting area of up to 40m<2>, and ensures the connection requirements of large-area load, large-path transponders and large-areaload cabin heat dissipation.

The invention relates to the technical field of material surface engineering, and provides a method of electroplating a graphene-metal composite material plating layer by using complex pulses, a PCB and a motor. The method specifically comprises the steps: ionic liquid serves as electroplating liquid, graphene oxide is dispersed in the ionic liquid, and the ionic liquid further contains metal ions; and the graphene-metal composite material plating layer is deposited on a cathode substrate through current or voltage control pulses, wherein the current or voltage control pulses comprise a forward pulse period, a reverse pulse period and a pause period. The method is simple in process, low in cost, free of environmental pollution of traditional electroplating and capable of being applied to large-area coating or film production. The PCB comprises a base material plate and a bottom conductive wire. The graphene-metal composite material plating layer and the conductive wire are manufacturedthrough the method. According to the invention, the graphene-containing conductive wire is printed and wound on a PCB to form a brushless motor stator, so that a novel motor is provided.

The invention discloses an inner embedding tooth and outer gear coupler type double-layer drill rod, which comprises a double-layer drill rod body, wherein the double-layer drill rod body comprises an outer pipe, an inner pipe, an upper joint, a lower joint, an upper sealing ring and a lower sealing ring; the inner pipe and the outer pipe are arranged in the same axial direction; a gap is formed between the inner pipe and the outer pipe; the upper joint is arranged at the upper end of the outer pipe; the lower joint is arranged at the lower end of the outer pipe; the upper joint and the lower joint are respectively and fixedly connected with the outer pipe to form a bearing structure of the drill rod; the upper sealing ring and the lower sealing ring are respectively positioned in the upper joint and the lower joint of the drill rod and are connected with the inner pipe to form an inner layer structure of the drill rod; inner embedding teeth are arranged inside the upper joint along the circumferential direction; outer embedding teeth are arranged outside the lower joint along the circumferential direction; the outer periphery of the upper joint and the outer periphery of the lower joint are provided with outer gears in the same structures; an inner gear sleeve sleeves the outside of the outer gear of the lower joint. The drill rod provided by the invention is used as an engineering drilling machine drill rod, is used for power transmission and airlifting reverse circulation fluid transmission, and has the advantages that the bearing is safe, the fast dismounting can be realized, and the double-layer sealing is reliable.

In order to handle a wind turbine blade between the ground and a rotor of an electric generator mounted on a nacelle (15) at the top of a tower (10), the blade (25) is retained in a support (40) thatis mounted on a trolley (30) arranged against the tower. The trolley is moved and guided along the tower using at least one cable (32, 33) which is angled in such a way as to apply a force having a horizontal component in the direction of the tower to the trolley.

The invention discloses an automatic scoring system for martial art competitions and a scoring method thereof. The invention belongs to the field of martial art competition scoring. The invention discloses an automatic scoring system for martial art competitions and a scoring method thereof. Actual hitting force and the like are fed back into actual data through the sensor, and scoring is carriedout in cooperation with the scoring condition of a referee; scoring results are more accurate, errors are reduced, a contact force net and a bubble partition wall are distributed, the action range andstrength of the striking force are effectively recorded, the score can be judged more accurately according to the striking force of the pressure sensor, the accuracy of the scoring system for the martial art competition is effectively improved, and when being hit, the plurality of spherical force-reducing bubbles move to a certain extent to present a micro dynamic state, so that the action rangeof the force can be expanded, the absorption of the hitting force is realized, the local force of the hitting force acting on the body of the player is effectively reduced, the player is effectively protected from being easily injured, and the potential safety hazard is reduced.

The invention discloses a reinforcing treatment structure for a tunnel middle-lower portion karst cave and a construction method of the reinforcing treatment structure. The treatment structure comprises a tunnel; karst caves located on one side and the lower portion of the tunnel in the horizontal direction; and a rubble layer, a gravel layer, concrete, a reinforcing beam, a sprayed concrete layer, a local anchor rod and a cartridge anchor rod are arranged in the lower karst cave of the tunnel from bottom to top in sequence, wherein the reinforcing beam is connected between the concrete and an inverted arch of the tunnel, the sprayed concrete layer is connected between the horizontal karst cave and the tunnel, the local anchor rod is connected between the horizontal karst cave and a rock mass, and the cartridge anchor rod is connected between the tunnel and the rock mass. According to the reinforcing treatment structure, the lower karst cave of the tunnel is filled with the rubble layer and the gravel layer, so that the bearing of the bottom of the tunnel and the construction progress are guaranteed; through the arrangement of the reinforcing beam, the concrete filling layer below the inverted arch of the tunnel can be reinforced, and the reinforcing beam has buffering and weakening effects on asymmetric acting force; and by arranging the sprayed concrete layer, on one hand, connection between the karst cave and the tunnel is strengthened, and on the other hand, contact between the boundary of the karst cave and the rock mass is strengthened.

The invention discloses a novel aluminum alloy cable bridge frame. The novel aluminum alloy cable bridge frame comprises a bridge frame body, a split supporting structure, a bridge cover, a first heatdissipation structure, a plate frame, reinforcing structures, a second heat dissipation structure and a moisture absorption and damp-proof structure. According to the novel aluminum alloy cable bridge frame, interior separation and indirect reinforcing support of a U-shaped groove plate are realized through the split supporting structure; while different cables can be placed in a classified mode,the interior of the U-shaped groove plate is reinforced; due to the arrangement of reinforcing ribs, the situation that the bending positions of side plates of the U-shaped groove plate are deformeddue to external force is effectively avoided; the overall pressing reinforcement on the side surfaces of the U-shaped groove plate is realized through the reinforcing structures; rapid heat dissipation cooling in the bridge frame body is ensured through the first heat dissipation structure and the second heat dissipation structure; meanwhile, dust filtering is also taken into consideration; and efficient moisture absorption drying of the interior can be realized through the moisture absorption and damp-proof structure, so that all-directional protection of a cable is realized, the maintenanceburden of personnel is reduced, and the service life of the cable is prolonged.

The invention discloses a spirally ascending multi-space structural system. The spirally ascending multi-space structural system comprises a spirally ascending outer steel mesh, a polygonal steel frame connected to the inside of the outer steel mesh, and a set of core cylinders connected between the polygonal steel frame and a ground foundation;the outer steel mesh is a tubular structure composedof polygonal rods; an outer surface layer is connected with the outer surfaces of the outer steel mesh and the polygonal steel frame, wherein the polygonal steel frame is arranged in a corridor mannerbetween the outer steel mesh. According to the spirally ascending multi-space structural system, a flexible and multi-layered space structure is constructed by setting the outer space steel mesh in aspirally ascending manner, so that the overall rhythm of a building is beautiful, the outer space steel mesh is a polygonal tubular space, the smooth operation of the interior is ensured,and the external meandering design is highlighted; at the same time the interconnected design has a modern meaning, the overall design of the structure and the choice of steel structure are reasonable, and implementation is easy.

A multi-services IP bearer system having QoS assurance and the implementing method thereof, it includes at least : a switching function unit, which supports the resource scheduling and isolation, and support to match the specific service with the specific network resource and forward the specific service using the specific network resource; and resource control function unit, which controls and manages the resource scheduling of switching function unit, and downward-transfer the resource scheduling and the allocation rule as well as the mapping relation of the resource and the service to switching function unit. The logic networks loaded service by the bearer system are separated each other, QoS of various services is not affected from other services, and it can receive QoS feedback of the service network, schedule the resource in the IP bearer system, and improve the QoS assurance for services.

The invention provides a method for laying an epoxy resin layer of a vertical bearing structure of an independent liquid tank. The method mainly comprises the steps: a plurality of jacking bolts are screwed into ends of the jacking bolts through corresponding threaded holes in a lower panel to be higher than the lower panel so as to reach the theoretical thickness of the epoxy resin layer; a stainless steel plate is placed at the ends of the jacking bolts, and the upper surface of the stainless steel plate is made to be flushed with a mounting locating line by adjusting the jacking bolts; a supporting adjusting device is arranged, and the independent liquid tank is lifted to an upper panel to be in contact with the supporting adjusting device; the supporting adjusting device is adjusted to enable layer wood to be tightly attached to the stainless steel plate; and through laying holes in the lower panel, liquid-state epoxy resin is injected into a cavity, and the liquid-state epoxy resin is stopped from being injected into the cavity until the liquid-state epoxy resin flows out of the edge of the stainless steel plate. According to the method for laying the epoxy resin layer, the method is not limited by the construction height and narrow space, and the laying thickness can be adjusted according to the actual construction precision; and it can be ensured that the layer wood can be tightly attached to the stainless steel plate.

The invention provides a construction method of a high-speed railway asphalt graded broken stone foundation bed. The construction method comprises the following steps of construction preparation, spreading of permeable asphalt and / or adhesive asphalt, mixing of asphalt graded broken stone, transportation of the asphalt graded broken stone, paving of the asphalt graded broken stone, compaction of the asphalt graded broken stone and maintenance of the asphalt graded broken stone. The invention also provides the high-speed railway asphalt graded broken stone foundation bed prepared by the method.The asphalt graded broken stone foundation bed prepared through the construction method serves as a new high-speed railway subgrade structure form, subgrade filler can be saved, the subgrade bearingcapacity and the waterproof and drainage capacity are improved, the subgrade service life is prolonged, and the asphalt graded broken stone foundation bed has wide application prospects and remarkableeconomic and social benefits.

The invention discloses a horizontal guide device of a polar crane. The horizontal guide device of the polar crane comprises outer clamping plates, a horizontal wheel I, a journey guide block, a horizontal wheel II, an inner clamping plate I, an inner clamping plate II, a small disc spring group, a shear pin and a big disc spring group, wherein the inner clamping plate I, the inner clamping plate II and the journey guide block are hinged in the middle of the outer clamping plate through pin shafts; the horizontal wheel I is connected at a big angle part of the inner clamping plate I through a wheel shaft; the horizontal wheel II is connected at a big angle part of the inner clamping plate II through a wheel shaft; another acute angle part of the inner clamping plate I is hinged with one end of the small disc spring group 11 through the pin shaft; the shear pin is arranged in the small disc spring group; and another acute angle part of the inner clamping plate II is hinged with the other end of the small disc spring group through the pin shaft. The horizontal guide device of the polar crane is provided with the small disc spring group with the shear pin so as to increase the limit bearing load of the device and avoid deformation of disc spring components, still can be used normally after an earthquake, and is suitable for a nuclear power station.

The present invention relates to a method, device and system for reducing a call drop rate in the field of the audio business field in the long-term evolution system. The method comprises: receiving a UE context releasing request sent or ERAB releasing indication information by an eUB, when the UE context releasing request sent or ERAB releasing indication information carries special identification, remaining the BGR bearing, and the special identification is used for indicating to remain the GBR bearing. Correspondingly, the present invention further discloses a method, device and system for reducing a call drop rate. The method, device and system for reducing the call drop rate can effectively reduce the call drop rate of the UE in the VoLTE business and improve the user experience.

The invention discloses a lightweight lifting device suitable for linear walking. The lightweight lifting device comprises a guide rail assembly, a wire dragging assembly, a walking trolley and an electric hoist, the guide rail assembly and a concrete girder of a house are installed through expansion screws, the wire dragging assembly and the side face of the guide rail assembly are installed, and the walking trolley is in rolling connection with the guide rail assembly. The electric hoist is fixedly connected with the walking trolley, so that the labor intensity is greatly reduced; the spliced guide rail is more flexible, and the installation mode saves space; and the electric hoist is firmly fixed, and compared with a traditional electric hoist which is completely exposed outside, hoisting is safer.

The invention belongs to the field of frame wharfs, and particularly relates to a flexible connecting structure of an overhead vertical frame wharf and an overhead ramp wharf, which comprises a simple support plate, a bottom beam, a polyurea cushion layer, frame columns, a deflector rod, a rotating shaft B, a universal joint and a telescopic rod, a groove with an inverted trapezoidal cross section is formed in the top of the bottom beam; when a moderate earthquake or an intensity earthquake occurs, relatively large relative displacement is generated between the overhead vertical frame wharf and the overhead slope ramp wharf, and the simple support plate moves upwards along the inclined plane C or the inclined plane D of the bottom beam groove under the action of tension or pressure at the two ends; rigid connection between the overhead vertical type frame wharf and the overhead slope ramp wharf is automatically relieved, structural safety is guaranteed, and the purposes that in the three-level targets of earthquake fortification, middle earthquakes can be repaired, and large earthquakes do not fall down are achieved.

The invention discloses a single-driving translating-overturning device. The single-driving translating-overturning device comprises a translating-driving assembly, a translating-overturning platform and a translating sliding table assembly, wherein the translating-driving assembly is connected with the translating-overturning platform through a translating draw-bar piece in order to drive the translating-overturning platform to translate in a pulling way; the translating sliding table assembly is used for overturning the translating-overturning platform during translating of the translating-overturning platform; the translating sliding table assembly comprises a guide rail and a guide wheel which are matched with each other; the guide rail is arranged along a translating path of the translating-overturning platform; the guide rail comprises a rising segment which is arranged in a slope form; the guide wheel is fixed on the translating-overturning platform in order to drive the translating-overturning platform to translate along the guide rail; the translating draw-bar piece is hinged to the translating-overturning platform through an overturning-hinging piece; the translating-overturning platform is gradually overturned towards a translating direction by taking an overturning-hinging point as a center when the guide wheel slides gradually upwards through the rising segment of the guide rail. The single-driving translating-overturning device has the advantages of simple and compact structure, low space occupation, low use cost and high control accuracy.

The invention discloses a waste explosive exploding and destroying device. The waste explosive exploding and destroying device comprises a main structure (1) and an outer protection wall (3) which are arranged on a foundation structure (5); the main structure (1) comprises a top wall (11) of a spherical crown structure and a side wall (12) of a cylindrical structure; a plurality of inlets and outlets (4) are formed in the side wall (12), the outer protection wall (3) is arranged at the position, right facing the inlets and outlets (4), of the outer portion of the main structure (1), and a plurality of exhaust holes (2) are formed in the top wall (11). Impact waves generated by explosives can be effectively absorbed and relieved, the damage effect of fragments is controlled, the explosive fragments are prevented from flying out, and the service life of the device is prolonged by replacing a lining.

The invention discloses a transmission method for MICH channel, combining uplink pilot frequency, downlink pilot frequency in single carrier frame, and middle protection interval to form short time slot, wherein the method also comprises: first sending channel estimation code on each code channel of each subframe during short time slot, then sequentially sending MBMS notification to indicate corresponding bits. Meanwhile, the invention also discloses a device for realizing MICH channel transmission, a method and a device for processing MICH channel carrying information; by using the invention, the MICH can be carried during short time slot, and the integrity of notification indicator can be ensured while supporting short time slot carried MICH.

The invention discloses a logical support structure and an anti-collision device for an offshore structure, wherein the logical support structure includes a bearing part, a fixing part, a diagonal brace and a linear spring; the bearing part and the fixing part are arranged in parallel; the diagonal The support includes a first diagonal brace and a second diagonal brace. The first diagonal brace and the second diagonal brace are arranged in pairs. One ends of the two first diagonal braces are respectively hinged to the two ends of the bearing part, and the other ends face the opposite side. The direction is inclined, and one end of the two second diagonal braces is respectively hinged at the two ends of the fixed part, and the other end is inclined in the opposite direction, and the other ends are respectively hinged with the other end of the corresponding first diagonal brace; the linear spring is set Between the load-bearing part and the fixed part, and its two ends are respectively hinged at the intersection of the first diagonal brace and the second diagonal brace; the application has high stiffness in the initial state, and when the load of the supporting structure reaches a certain threshold, the structural stiffness The reduction can not only ensure the implementation of normal operation, but also reduce the impact contact force under impact conditions.

The invention discloses a urea tank fix structure for rear passenger car comprising a supporting structure, a fixing urea tank bracket, a fixing strap and fixing bolt nut, wherein the supporting structure and the fixing urea tank bracket are L-shaped structures, and the L-shaped supporting structure forms a closed fixing structure with the bus body. The invention has the advantages that: The fixing structure adopts L-shaped fixed urea tank bracket and L-shaped fixed urea tank bracket to ensure that the urea tank is positioned and fixed in multiple directions, meanwhile, the fully threaded bolts at the two ends of the fixing strap and the fixing holes reserved at the two ends of the fixing urea tank bracket form a closed fixing structure, thereby improving the fixing stability of the ureatank; Each part of the fixing structure is independent of each other, and each part is connected and fixed by bolts and nuts, so as to ensure the installation and positioning effect of the urea tank,and meanwhile, the installation and fixing efficiency is improved by bolt fixation; The fixed structure is firm and durable, has good social benefits, and is suitable for popularization and use.

The invention discloses an automatic scoring system for martial arts competitions and a scoring method thereof, which belongs to the field of scoring for martial arts competitions. An automatic scoring system for martial arts competitions and a scoring method thereof uses a sensor to record actual hitting strength, etc. The actual data is fed back and scored in accordance with the referee's scoring situation, so that the scoring results are more accurate and the error is reduced. According to the hitting force of the pressure sensor, the judgment of scoring is more accurate, which effectively improves the accuracy of the scoring system of martial arts competitions, and when hit, multiple spherical force-reducing bubbles will move to a certain extent with each other to present micro-dynamics , so that the range of action of the force can be expanded and the impact force can be absorbed at the same time, thereby effectively reducing the force of the impact force on the upper part of the player's body, effectively protecting the player from injury and reducing safety hazards.

The invention discloses an inner embedding tooth and outer gear coupler type double-layer drill rod, which comprises a double-layer drill rod body, wherein the double-layer drill rod body comprises an outer pipe, an inner pipe, an upper joint, a lower joint, an upper sealing ring and a lower sealing ring; the inner pipe and the outer pipe are arranged in the same axial direction; a gap is formed between the inner pipe and the outer pipe; the upper joint is arranged at the upper end of the outer pipe; the lower joint is arranged at the lower end of the outer pipe; the upper joint and the lower joint are respectively and fixedly connected with the outer pipe to form a bearing structure of the drill rod; the upper sealing ring and the lower sealing ring are respectively positioned in the upper joint and the lower joint of the drill rod and are connected with the inner pipe to form an inner layer structure of the drill rod; inner embedding teeth are arranged inside the upper joint along the circumferential direction; outer embedding teeth are arranged outside the lower joint along the circumferential direction; the outer periphery of the upper joint and the outer periphery of the lower joint are provided with outer gears in the same structures; an inner gear sleeve sleeves the outside of the outer gear of the lower joint. The drill rod provided by the invention is used as an engineering drilling machine drill rod, is used for power transmission and airlifting reverse circulation fluid transmission, and has the advantages that the bearing is safe, the fast dismounting can be realized, and the double-layer sealing is reliable.

The invention discloses a spirally ascending multi-space structural system. The spirally ascending multi-space structural system comprises a spirally ascending outer steel mesh, a polygonal steel frame connected to the inside of the outer steel mesh, and a set of core cylinders connected between the polygonal steel frame and a ground foundation;the outer steel mesh is a tubular structure composedof polygonal rods; an outer surface layer is connected with the outer surfaces of the outer steel mesh and the polygonal steel frame, wherein the polygonal steel frame is arranged in a corridor mannerbetween the outer steel mesh. According to the spirally ascending multi-space structural system, a flexible and multi-layered space structure is constructed by setting the outer space steel mesh in aspirally ascending manner, so that the overall rhythm of a building is beautiful, the outer space steel mesh is a polygonal tubular space, the smooth operation of the interior is ensured,and the external meandering design is highlighted; at the same time the interconnected design has a modern meaning, the overall design of the structure and the choice of steel structure are reasonable, and implementation is easy.

Disclosed is an application method of a detachable carrying device. The detachable carrying device comprises a stressed component, an outer barrel, an inner column, steel balls, bolts and a supporting component. After the bolts on the lower portion of the outer barrel are loosened and detached, the steel balls are pressed out from bolt holes under gravity pressure of the inner column and a lubricating effect of lubricating oil. After the steel balls in the outer barrel respectively slide out from the bolt holes on the bottom layer, the inner column naturally descends in the outer barrel and then does not support the stressed component naturally, so that materials can be reused, and furthermore, safe and long-term carrying is guaranteed. The application method of the detachable carrying device can be widely applied to the field of construction of buildings.

The invention discloses an inspection door opening and closing mechanism. The inspection door opening and closing mechanism comprises a cross beam, a rotating assembly, a hoisting arm, a hoisting assembly and an inspection door; and the rotating assembly is arranged on the cross beam, the hoisting arm is L-shaped, the upper end of the hoisting arm is a vertical part, the lower end of the hoistingarm is a horizontal part, the upper end of the hoisting arm is rotatably matched with the rotating assembly, the hoisting assembly is arranged at the lower end of the hoisting arm, and the inspectiondoor is matched with the hoisting assembly. According to the scheme, a fixed hoisting rotary structure is adopted, bearing of the weight of the inspection door is guaranteed through the bearing crossbeam and the rotating assembly, and meanwhile the rotating flexibility after bearing can be guaranteed; a sliding type pin shaft structure can be adopted at the joint of the inspection door opening and closing mechanism and the inspection door, displacement is carried out along with opening of the inspection door, and the function of pulling out the inspection door while rotating is achieved; andworkload and time for opening and closing are greatly reduced, and frequent observation and maintenance on site are facilitated.

The invention discloses a logistic supporting structure and an anti-collision device for an offshore structure. The logistic supporting structure comprises a bearing part, a fixing part, inclined struts, and a linear spring; the bearing part and the fixing part are arranged in parallel; the inclined struts comprise first inclined struts and second inclined struts, the first inclined struts and thesecond inclined struts are respectively arranged in pairs, one ends of the two first inclined struts are hinged to the two ends of the bearing part correspondingly, the other ends of the two first inclined struts incline in the opposite direction, one ends of the two second inclined struts are hinged to the two ends of the fixing part correspondingly, the other ends of the two second inclined struts incline in the opposite direction, and the other ends of the two second inclined struts are hinged to the other ends of the corresponding first inclined struts; and the linear spring is arranged between the bearing part and the fixing part, and the two ends of the linear spring are hinged to the intersection points of the first inclined struts and the second inclined struts respectively. The supporting structure has high rigidity in the initial state, when the bearing capacity of the supporting structure reaches a certain threshold value, the structural rigidity is reduced, implementationof normal operation can be ensured, and the impact contact force can be reduced under the impact working condition.