21results about How to "Prevent blasting" patented technology

According to the artificial chamber type high-pressure gas storage steel-rubber composite sealing structure and the construction technology, when rubber sealing layers at the lap joint position of the internal rubber sealing layers and the two ends of the internal rubber sealing layers are vulcanized with L-shaped rubber rings, and meanwhile after the L-shaped rubber rings are vulcanized through O-shaped rubber rings and pressing rings, a rubber layer full-sealing structure is formed inside; through the unwelded steel plate coiled material and the internal full-sealed rubber structure, the steel plate has a certain expansion and contraction amount, and the rubber also has a certain elongation percentage, so that the sealing performance of the chamber is ensured, and compared with a traditional steel tank or a full-sealed steel plate structure, the steel plate coiled material has a certain deformation amount in the aspect of structure; compared with a traditional integral welding structure, the steel plate is prevented from being exploded, the gas storage capacity is greatly improved, the structure is simpler in technology, large-diameter and large-length laying can be achieved, and the technology is more reasonable.

The invention discloses a film cutting device for a rice transplanting and film covering all-in-one machine, which comprises a first support beam, a second support beam, a first mounting plate, a second mounting plate, a hydraulic oil cylinder, a knife rest and a cutter, and the first support beam and the second support beam are connected with each other; one end of the hydraulic oil cylinder is hinged to the upper end of the second support beam, and the other end of the hydraulic oil cylinder is hinged to the tool rest which is hinged to the lower end of the second support beam; the first mounting plate and the second mounting plate are detachably connected, the second mounting plate is fixed on the first bracket beam, and the first mounting plate is detachably mounted on the rice transplanting and film mulching all-in-one machine; the strength of the first mounting plate is smaller than that of the first support beam and the second support beam. The first mounting plate is arranged as a safety device, bending deformation of the first support beam and the second support beam is avoided, the first mounting plate is easy to replace, the whole film cutting device does not need to be replaced, and the maintenance cost is reduced.

The invention relates to an air tightness detection device and detection method suitable for a straight-through stop valve, and relates to the technical field of valve detection. The device comprises a detection frame, an intelligent sensor fixed on the detection frame, a processing mechanism used for sealing, detecting, marking and painting stop valve bodies and a conveying part used for conveying the multiple stop valve bodies, and the processing mechanism comprises a sealing assembly, a detection assembly, a marking assembly and a painting assembly; the two sealing covers are movably arranged on the stop valve body, the first pressure sensor, the air pressure sensor and the forward funnel are fixed to the two sealing covers respectively, the synchronizing part is used for conducting synchronous adjustment on the two sealing covers, and the sealing part is used for sealing the forward funnel and the inner wall of the stop valve body. According to the invention, bidirectional blowing detection can be carried out on the stop valve body, the stop valve body can be accurately detected, and detection interference caused by the fact that blowing foreign matters in a certain direction of the stop valve hinder flowing of gas is avoided.

The invention provides an aircraft wheel brake assembly which comprises an aircraft wheel assembly, a brake assembly and a brake assembly. The piston seat is located on the interface side of the airplane wheel assembly, and a plurality of pistons are arranged on the piston seat; the brake disc assembly is fixed in the airplane wheel assembly, the brake disc assembly comprises a pressing disc, a brake disc mechanism and a plurality of first heat dissipation pieces, the disc face of one side of the pressing disc is attached to the brake disc mechanism, the disc face of the other side of the pressing disc is opposite to the piston seat, and the first heat dissipation pieces are arranged on the first heat dissipation pieces. The first heat dissipation piece is fixed to the other side disc face of the pressing disc and located between the adjacent pistons, and the first heat dissipation piece comprises a plurality of cooling fins extending out in the direction opposite to the side disc face of the pressing disc. According to the airplane wheel brake assembly, the heat dissipation effect of the airplane wheel brake device can be effectively improved.

The utility model discloses a bending-resistant electronic wire harness, which comprises a wire harness main body supported by a supporting assembly, the wire harness main body comprises a core wire and a shielding layer, the shielding layer is arranged on the outer surface of the core wire in a wrapping manner, and a flame-retardant layer is fixed on the outer surface of the shielding layer. A waterproof layer is mounted on the outer wall of the flame-retardant layer in a sleeving manner, and the outer surface of the waterproof layer is wrapped with a hard wear-resistant layer; the supporting assembly comprises a U-shaped base, a connecting rod and a center plate, and the connecting rod is integrally formed on the outer wall of the center plate. According to the utility model, the U-shaped seat can play a role in supporting the wire harness main body from inside to outside after the wire harness main body is wound into a roll, so that the wire harness main body is prevented from being bent in the transportation process and a protection role is provided, and the relative distance between the buckle I and the buckle II can be adjusted by the one-way rack and the one-way buckle; and the wire harness main body is hooped by using the buckle I and the buckle II, so that the wire harness main body is prevented from being exploded after being wound.

The application discloses a kind of thick clothing folding holding type automatic bagging equipment and bagging method, the equipment includes rack, conveying mechanism, width folding mechanism, bag opening and bagging mechanism, forming die, bag pressing and holding mechanism, length folding and bagging mechanism and control system.Width folding mechanism includes folding plate assembly, and folding plate assembly is kept in pressure or covering state after completing width direction folding.Open bagging mechanism opens packaging bag, and packaging bag is sleeved outside forming die by bag supporting jaw;Bag pressing and holding mechanism presses packaging bag on forming die, and length folding and bagging mechanism again folds the clothing into packaging bag.The equipment can reduce the risk of thick clothing folding deviation, folding and bagging, and improve the stability and operation efficiency of thick clothing continuous folding and bagging.

The utility model discloses a steel strand anti-explosion device, and relates to the technical field of steel strand winding and unwinding, the steel strand anti-explosion device comprises a first frame body, a second frame body is arranged behind the first frame body, a plurality of blocking rods are arranged between the end of the first frame body and the end of the second frame body, and the blocking rods are arranged on the first frame body and the end of the second frame body. Connecting pieces are arranged outside the two ends of the blocking rod correspondingly, the two ends of the blocking rod are fixed to the first frame body and the second frame body through the connecting pieces correspondingly, the first frame body and the second frame body each comprise a first scaffold pipe, a second scaffold pipe, a third scaffold pipe and a fourth scaffold pipe, one end of the second scaffold pipe is welded and fixed to the surface of one side of the first scaffold pipe, and the other end of the second scaffold pipe is welded and fixed to the surface of the other side of the first scaffold pipe. According to the scheme, the problems that when an existing steel strand is wound and unwound, external protection is lacked, the strand explosion phenomenon is prone to occurring in the winding and unwinding process, stability is poor, rearrangement is needed, time and labor are wasted, the structure is complex, the input cost is high, and installation and maintenance are inconvenient are solved.

The present invention provides a method for blasting the broken top after the working face frame, and relates to the technical field of blasting the roof of the goaf. The method for blasting the broken top after the working face frame includes: when the working face starts to be mined, when the phenomenon of the suspended top after the working face frame appears, the blasting distance of the working face inclination, the blasting distance of the working face strike, the blasting depth and the angle of the blasting hole are determined, and a blasting hole is drilled at the front end of the hydraulic support and on the side of the flume close to the working face; the blasting hole is divided into a mud sealing section and a charge charging section, and mud sealing operations and charge charging operations are performed respectively; based on the strength of the roof, the blasting type is selected and the blasting is implemented. The method can blast the suspended top after the frame is dropped, without the need to additionally strengthen the support of the working face and the flume, the cost is low, and the pressure relief effect is good; the method has little impact on normal production, and can effectively avoid excessive blasting and redundant blasting, the blasting range is small, and the damage is small; the method drills the blasting hole at the front end of the hydraulic support, which is safer than drilling the blasting hole in the goaf.

The invention relates to the technical field of semiconductors, in particular to a photoresist removal method and equipment, a control method and a control circuit. The removing method comprises the following steps: arranging a wafer to be processed above a heating disc in a photoresist removing chamber; the wafer to be processed is subjected to an ion implantation process; controlling the to-be-processed wafer to lift until the temperature of the to-be-processed wafer reaches a first temperature, and performing a hardened layer removal process of the photoresist; the first temperature is 5-50 DEG C lower than the transition point temperature; wherein in the hardened layer removal process, the wafer temperature corresponding to the fastest change of the photoresist removal rate is the transition point temperature. According to the method, the problem of explosion caused by too high etching rate in the hardened layer removal process can be avoided, the problem of too low etching rate can also be avoided, the uniformity in the hardened layer removal process can also be ensured, and the yield and the productivity in the photoresist removal process after ion implantation are improved.

The utility model discloses a minimum reflux valve suitable for a high-pressure ammonium pump, which is used for a production device in chemical fertilizer and chemical industry, and aims to solve the cavitation phenomenon of the valve and achieve long-period on-line safe operation. Comprising a valve body and valve element assembly, a filler assembly and a fastening assembly. The valve body and valve element assembly comprises a lower valve body, a valve seat, a valve element and a valve body. An outlet runner is arranged at the upper end of the valve seat; the outlet flow channel is provided with two layers of outlet flow channels, and the two layers of outlet flow channels are provided with different numbers of small overflowing holes; the lower end of the valve body is provided with a bolt hole and is provided with a bolt; a bolt hole is formed in the upper end of the valve body, and a bolt is installed in the bolt hole. The upper part of the valve body is a filler box body; a filler bin is arranged in the filler box body; the packing assembly comprises a packing assembly body, a packing gland and a packing pressing plate. The fastening assembly comprises a nut and a filler bolt; and the valve body and the lower valve body are fixed through a nut.

The invention discloses fire-fighting steel cylinder strength detection equipment which comprises a base, a supporting vertical rod arranged at the top of the base, a detection mechanism used for detecting the air pressure strength of a fire-fighting steel cylinder, and a top plate arranged at the bottom of the detection mechanism, the labeling mechanism is used for labeling unqualified fire-fighting steel cylinders, and the scrubbing mechanism is used for removing garbage on the side walls of the fire-fighting steel cylinders. The invention relates to the technical field of fire-fighting steel cylinder strength detection. When the connecting circular plate drives the first pneumatic telescopic pipe to press downwards, the fire-fighting steel cylinder can be detected through cooperation of the first pneumatic telescopic pipe, the laser transmitter and the air pressure sensor, and the situation that the fire-fighting steel cylinder explodes due to the fact that the air pressure exceeds the upper limit borne by the fire-fighting steel cylinder when a high-pressure air pump conveys excessive air into the fire-fighting steel cylinder is avoided; meanwhile, the side wall of the fire-fighting steel cylinder can be scrubbed, and the situation that garbage attached to the side wall blocks light output by the laser transmitter and influences the equipment detection precision is avoided.

The utility model relates to a cloud computing equipment cabinet device which comprises a cabinet body, placing plates are fixedly connected in the cabinet body at equal intervals, sliding grooves are formed in the two sides of the inner wall of the cabinet body and located above the placing plates, sliding rods are fixedly connected in the sliding grooves, two sliding blocks are connected to the outer sides of the sliding rods in a sliding mode, one sides of the sliding blocks are rotationally connected with connecting rods, and the connecting rods are connected with the connecting rods in a sliding mode. And a clamping plate is rotationally connected between the two corresponding connecting rods, an empty groove is formed in the position, located on one side of the containing plate, in the cabinet body, and cooling fans are installed and connected in the empty groove at equal intervals. The cabinet has the advantages that the cabinet can adapt to cloud computing devices of different sizes, the devices are prevented from shaking in the cabinet body, the safety of the devices is protected, the heat dissipation system can effectively reduce the temperature in the cabinet body through cooperation of the air inlet, the heat dissipation fan, the heat dissipation holes and the air outlet, it is guaranteed that the cloud computing devices operate in a proper temperature environment, and the service life of the cloud computing devices is prolonged. And the service life of the equipment is prolonged.

The invention belongs to the technical field of underground mining, and relates to a steeply inclined thin ore body medium-length hole open field system and a mining method. A plurality of chambers are arranged in the moving direction of the ore body in each stage, the adjacent chambers are provided with columns, and the tops of the chambers are provided with top columns; and the ore body area surrounded by the middle columns and the top columns is the ore body in the chamber. According to the method, the chambers are arranged along the trend of the ore body, segmentation is not needed any more, the upper stage, the lower stage and the top cutting layer are communicated through the stage ramps, the stage horizontal complex ore removal structure is simplified, and the mining preparation work amount is greatly reduced; the chamber is reasonable in structure, anchor rods are driven into the top columns on the upper portion in the top cutting space for top protection supporting, and the safety of rock drilling operation of workers and ore removal operation of a carry-scraper is guaranteed. The two-section type parallel deep hole rock drilling in the undercutting space and the roof cutting space is adopted, so that the ore breaking efficiency is improved, and the problems of blasting and lean loss caused by the blast hole deviation rate of stage deep holes are solved; the remote-control carry-scraper is adopted for ore removal, so that the recovery efficiency of the thin ore body is improved to a great extent, and the labor intensity is reduced.

The invention provides an explosion-proof valve type selection method for a battery pack, electronic equipment and a storage medium, and the method comprises the steps: obtaining the ventilation volume needed when a box body where the battery pack is located generates the maximum temperature difference before an explosion-proof valve is opened; the gas production rate of the battery pack after the anti-explosion valve is opened is obtained; according to the ventilation volume and the gas production rate, the explosion-proof valve of the battery pack is selected, so that the selected explosion-proof valve not only can balance the pressure difference inside and outside the box body, but also can quickly relieve pressure to prevent explosion, the explosion-proof effect of the explosion-proof valve is improved, and the safety of the battery pack is further improved.

The invention relates to the field of bending machines, and discloses a steel coil roll shaft device for a stamping bending machine, which comprises a bracket, one end of the bracket is rotatably connected with a rotating frame, the inner wall of the bracket is provided with a fixing assembly, the bottom end of a rotating rod I is fixedly connected with a gear I, and the outer wall of a gear II is fixedly connected with an outer gear ring I; third gears are fixedly connected to the two ends of the first connecting rod, a second bevel gear is rotatably connected to the top end of the arc steel plate, moving blocks are fixedly connected to the two sides of the second moving frame, a plurality of first springs are arranged at the bottom end of the first fixing block, and first rotating wheels are rotatably connected to the outer walls of the moving blocks; steel coils are placed on the outer walls of the multiple arc steel plates, and a limiting assembly is arranged on the outer wall of the support. The steel coil is jointly supported by the four arc steel plates, the second rotating blocks are rotated, the second rotating blocks indirectly drive the four second moving frames to move inwards, first rotating wheels on the moving blocks and second rotating wheels on the rotating frames make contact with the two sides of the steel coil, and the effect of preventing the steel coil from disengaging is achieved.

This invention belongs to the field of gas control technology and relates to an integrated anti-blocking device and method for gas drainage boreholes, including a coal borehole wall support structure, a rock borehole section sealing structure, and a connector that fixes the two together. The coal borehole wall support structure includes multiple connecting pipes and at least one screen pipe arranged between the connecting pipes. Multiple metal supports are fixedly connected to the outside of the screen pipe. One end of the metal support is fixed to the screen pipe, and the other end is connected to the screen pipe through a second elastic element. Under normal conditions, the metal support is close to the screen pipe. The non-fixed end of the metal support is provided with a spherical buckle that is locked into the buckle opening of the screen pipe. A spherical top pin that can move axially is provided inside the screen pipe at the position corresponding to the spherical buckle. The spherical top pin is connected to an unhooking lead extending to the outside of the borehole. Pulling the unhooking lead can cause the spherical top pin to push out of the spherical buckle, causing the metal support to expand outward under the action of the second elastic element. The rock borehole section sealing structure includes a sealing pipe and a rear end bag and a front end bag fitted on it.

The present invention discloses a two-way press-fit die for an inlaid joint bearing, comprising a mandrel and two sets of press-fit dies arranged opposite to each other, each set of press-fit dies respectively comprising: an inner ring stop block; an outer ring stop block; and a press-fit base plate, which can be slidably connected between the inner ring stop block and the outer ring stop block, a first reset member is provided between the inner ring stop block and the press-fit base plate, and a second reset member is provided between the outer ring stop block and the press-fit base plate, when the inner ring stop block and the outer ring stop block are respectively pressed against the inner ring end face and the outer ring end face of the joint bearing, the press-fit base plate can overcome the reset force of the first reset member and the second reset member under the action of external force and continue to slide to press the bushing between the inner ring and the outer ring of the joint bearing. The present invention has high press-fitting efficiency, which can improve the efficiency by more than double compared with the traditional press-fitting die, has stable press-fitting quality, and improves the service life of the joint bearing.

The utility model provides a roll burst prevention device and a winding device, the roll burst prevention device comprises an abutting piece and a supporting piece, the abutting piece is used for abutting against the edge of a strip-shaped material, and the supporting piece is used for supporting the abutting piece; the abutting piece is provided with an arc-shaped section, and the arc-shaped section is used for increasing the contact area with the strip-shaped material. According to the rolling and bursting prevention device in the embodiment, only the abutting piece and the supporting piece are used, and the supporting piece is generally and directly arranged on the ground and supports the abutting piece. The abutting piece abuts against the edge of the strip-shaped material, so that the rigidity of the strip-shaped material is overcome, and the strip-shaped material is prevented from being exploded. In the unwinding process, the strip-shaped material is generally close to a circle. The arc-shaped section can ensure that the strip-shaped material has a larger contact area when being in sliding contact with the abutting piece, so that the surface of the strip-shaped material is prevented from being damaged. Finally, the purpose of the device which is simple in structure and capable of preventing the strip-shaped materials from being exploded in the winding process can be achieved.

The utility model discloses a combined type grinding wheel grinding structure which comprises a wheel disc, a center installation ring is fixedly installed in the center position of the wheel disc, two pairs of fan-shaped bottom plates are installed on the wheel disc, fan-shaped grinding wheels are installed on the two pairs of fan-shaped bottom plates respectively, inner metal wire meshes are arranged in the fan-shaped grinding wheels, and the inner metal wire meshes are arranged on the inner metal wire meshes. The utility model relates to the technical field of grinding wheels, a traditional integrated disc grinding wheel is manufactured into the grinding wheel formed by combining two pairs of fan-shaped grinding wheels, a gap is reserved between the two pairs of fan-shaped grinding wheels, in the high-speed running process, the fan-shaped grinding wheels are arranged on the fan-shaped bottom plate, the fan-shaped bottom plate is arranged on the fan-shaped bottom plate, and the fan-shaped bottom plate is arranged on the fan-shaped bottom plate. The gap can meet the requirement for volume change caused by high-temperature expansion, when the grinding wheel is subjected to external force, the two pairs of fan-shaped grinding wheels are usually only damaged independently and cannot be damaged suddenly and integrally, and the situation that a grinding wheel exploding piece component splashes is greatly reduced.

The invention belongs to the technical field of blood collection, and particularly relates to a blood transfer storage device which comprises a bag body, one end of the bag body is provided with a blood transfusion tube and a filling tube, the blood transfusion tube is in threaded connection with a first tube cover, the filling tube is in threaded connection with a second tube cover, one side of the bag body is provided with an air bag and a box body, and the air bag is connected with two second pipelines. The box body is fixed to the surface of the bag body, an air bag is arranged in the box body, the two ends of the air bag are connected with first pipelines penetrating through the box body respectively, and the first pipelines are connected with the ends of the corresponding second pipelines. According to the automobile bumping prevention device, when bumping occurs, the air bag can bear part of pressure, air in the air bag can sequentially enter the second pipeline and the first pipeline and finally enter the air bag, the air bag can expand, pressure is buffered, and therefore the air bag is prevented from being exploded due to the fact that the air bag is seriously pressed, and when the automobile runs stably, the air bag can be contracted to the original state; therefore, the blood bag placed on the lower layer can be effectively prevented from being exploded due to overlarge pressure.

The utility model relates to the field of abrasive wheel cutting blade structures, in particular to an abrasive wheel cutting blade structure which is safe to use. The technical problems that most grinding wheel cutting blade structures are only provided with clamping installation structures, blasting is prone to occurring, and the safety performance is low are solved. According to the technical scheme, the grinding wheel cutting disc structure safe to use comprises a grinding wheel cutting disc equipment body. By arranging the anti-explosion protection cooling assembly, an anti-explosion protection effect can be achieved on the cutting blade, meanwhile, the grinding wheel cutting blade which is being cut can be cooled in time, the problem that a blade or an appliance is damaged due to the fact that the temperature is too high is solved, and the anti-falling assembly can be installed in a reinforced mode according to needs. The grinding wheel cutting tool is stably fixed in a multi-layer mode, a blade is prevented from sliding off to cause injury to people, the reinforced buffering cutting assembly has high strength and high toughness, the high-quality grinding wheel cutting blade can reduce accident risks, and fragment splashing, smoke dust and sparks in the cutting process are reduced.