14results about How to "Avoid impact" patented technology

This invention provides a control valve structure for a pneumatic nail gun, including a valve body and a valve chamber. The valve chamber is divided into a low-pressure chamber, a high-low pressure switching chamber, and a high-pressure chamber. A pressure relief hole is provided on the inner wall of the low-pressure chamber, and a pressure supply hole for controlling the nail gun's nailing operation is provided on the inner wall of the high-low pressure switching chamber. A sliding sleeve and a valve stem are provided within the valve chamber, with the valve stem moving through the three chambers. The valve stem has a low-pressure seal for sealing the low-pressure chamber and the high-low pressure switching chamber, and a high-pressure seal for sealing the high-low pressure switching chamber and the high-pressure chamber. A vent hole is provided on the valve body. When the vent hole is open, the gas drives the sliding sleeve to move along the valve body axis, simultaneously pushing the valve stem to move, thus achieving the nailing operation. A reset element is provided on the valve stem. When the vent hole is closed, the reset element is used to reset the valve stem, and the nail gun does not nail. This invention eliminates the need for manual trigger control of the nail gun, instead using pneumatic machine control to switch between nailing and non-nailing states, saving labor costs.

The utility model discloses an anti-falling safety rope, relates to the technical field of safety ropes, and aims to solve the problems that when a worker accidentally falls off in the high-altitude operation process, the worker is subjected to inertia, so that the worker is subjected to large impact force, and the safety of the worker is influenced. According to the technical scheme, the safety rope is provided with a supporting frame, the top and the bottom of the supporting frame are each provided with two through holes, a winding roll is rotationally connected into the supporting frame, and the side wall of the supporting frame is provided with a through groove which enables the safety rope to be wound around the winding roll and is communicated with the through holes. Through the arrangement of the driving assembly and the limiting teeth, when a worker falls down, movement of the safety rope can be limited in time, the worker is prevented from being impacted, the safety of the worker is improved, meanwhile, the safety rope can be made of aramid fibers, the strength and abrasion resistance of the safety rope can be improved, and the safety of the worker is improved. The firmness of the safety rope is further improved, and the safety rope is prevented from being broken.

The utility model provides a kind of light supporting device for steeply inclined thin coal seam belongs to coal mining technical field, the light supporting device for steeply inclined thin coal seam includes side support frame in both sides, light supporting assembly is set between side support frame, light supporting assembly includes supporting bottom plate and supporting net in both sides, one side of supporting net is connected with steel chain, another side is connected with steel chain, electric winch is set on side support frame, one end of steel chain is connected with supporting net, and the other end is fixedly connected with the reel of electric winch by ring buckle;Side support frame includes stand, crossbeam and inclined strut, trapezoidal bottom plate is set in the bottom of stand, crossbeam is fixedly connected with stand by bolt, one end of inclined strut is connected with stand, and the other end is connected with bottom plate;Multiple groups of sliding slots are set on crossbeam, pulley is rotatably set in sliding slot, steel chain is wound around pulley;The utility model can solve the problem that dynamic support demand cannot be met.

The utility model provides a kind of building facade photovoltaic module, it is related to solar energy technical field, the building facade photovoltaic module includes frame, installation slot, photovoltaic board, support cylinder, connecting groove, support frame, spring, mounting bracket, pulley, suspension, pivot, line wheel, extension plate, main shaft, winding wheel is provided on main shaft, the back side of frame is provided with motor, the output end of motor and main shaft are all provided with gear mutually engaged, further include the connecting rope for connecting photovoltaic board and winding wheel, one end of connecting rope is fixedly connected with photovoltaic board, the other end of connecting rope is fixedly connected with winding wheel after passing pulley and line wheel, this kind of building facade photovoltaic module can be installed to building facade, and multiple photovoltaic boards can be driven to overturn simultaneously by a motor, so that cost can be reduced, installation difficulty is reduced, and photovoltaic board can be overturned to the inside of frame by certain angle, so that photovoltaic board can avoid the impact of hail etc., and it is beneficial to protect photovoltaic board.

The utility model discloses a friction plate punch -die of quick material can retreat, relates to punch -die technical field, including base, one side fixedly connected with rack of base, one side fixedly connected with rack of rack, the top fixedly connected with cylinder of rack. The utility model adopts above -mentioned structure, installs the through rod through in the both sides of lifting plate, and the through hole is seted up in the lower mould base, after the upper die holder and lower mould base are contacted by the lifting plate, the through rod passes through the through hole and is contacted with transmission assembly, and transmission assembly makes the work of push material subassembly, and makes the push material block of push material subassembly to be received into lower mould base, when the friction piece shaping ends, transmission assembly no longer receives the pressure, and the push material block is pushed to the friction piece and moves upward by the reset of push material subassembly, and the external driving device such as cylinder, electric push rod is discarded, can cut down the initial purchase cost of mould greatly, reduces production operating cost, also avoids the impact force because of the speed too fast, prevents the mould damage.

This invention addresses the shortcomings of existing chemical fiber cutting devices, which, except for short cuts of carbon fiber and glass fiber where length precision is not critical, typically employ fixed-length cutting mechanisms and guillotine-type cutters, requiring manual feeding of the cutter after each cut. To reduce the repetitive process of manually pulling the fiber bundle from the cut surface to the fixed end after cutting, this invention designs a cutting disc mechanism for chemical fiber cutting, comprising: a circulating clamping device for conveying the chemical fiber to a fixed length; clamping and tightening rails located on both sides of the clamping part of the circulating clamping device for adjusting the clamping part; a movable cutting disc device located inside the circulating clamping device, on the upper side of the conveying plane; and a movable support device located inside the circulating clamping device, on the lower side of the conveying plane, cooperating with the movable cutting disc device to cut the chemical fiber held by the circulating clamping device.

The utility model discloses water adding equipment for producing premixed concrete, which comprises a bottom plate and a stirring box, the upper surface of the bottom plate is fixedly connected with a fixed rod, the fixed rod is internally provided with a groove, the inner surface of the groove is slidably connected with a sliding block, the inner surface of the sliding block is in threaded connection with a lead screw, and the lead screw is in threaded connection with the stirring box. The upper surface of the lead screw is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with the lead screw, the positions of a water spraying plate and a nozzle can be adjusted to proper positions according to the height of materials in the stirring box, and the situation that water falls from the top to generate large impact force is avoided; according to the stirring box, materials are prevented from splashing to the ground and equipment around the stirring box, so that the cleanliness of a production site is kept, the diffusion of pollutants is reduced, the workload of cleaning the surrounding environment is reduced, water can be conveniently added into the stirring box, and the labor intensity of manually moving a water pipe or a water bucket is reduced.

The utility model discloses a cable connecting device, which relates to the technical field of cables and comprises a connecting pipe, cable fixing assemblies are fixedly connected to the front side and the rear side of the connecting pipe respectively, an insulating ring is fixedly connected to the middle of the interior of the connecting pipe, and a conductive terminal is fixedly connected to the interior of the insulating ring. Elastic buffer assemblies are arranged on the front side and the rear side of the conductive terminal. According to the utility model, through the arrangement of the cable fixing assembly, an operator can conveniently complete the installation and disassembly work of a cable, and at the same time, the device can adapt to cables with different external diameter specifications in a certain range, thereby improving the use flexibility and applicability of the device; the conductive terminal can absorb and buffer external impact or instant impact force generated by cable plugging and unplugging operation, thereby effectively reducing the occurrence probability of faults such as poor contact and wire fracture caused by plugging and unplugging impact, and ensuring that a tight and stable contact state is always kept between the cable and the conductive terminal.

The utility model discloses a special bearing platform for aluminum coil storage, which comprises a base, the front end and the rear end of the inside of the base are respectively provided with three sliding grooves, the sliding grooves are distributed at equal intervals, second threaded rods are fixedly arranged inside the sliding grooves, connecting seats are sleeved outside the second threaded rods, the connecting seats and the sliding grooves are limited in a sliding mode, and the connecting seats are connected with the sliding grooves in a sliding mode. The upper end of the connecting base extends to the position above the base, a movable plate is fixedly arranged at the upper end of the connecting base, the portion, located outside the connecting base, of the second threaded rod is sleeved with a first nut, and a limiting strip is fixedly arranged on the side, close to the center position of the base, of the movable plate and is in sliding fit with the base. An aluminum coil is arranged at the upper end of the limiting strip, the center position of the aluminum coil is of a hollow structure, and the structure solves the problems that a limiting mechanism is difficult to adjust, and the fixing effect of the aluminum coil is not good enough.

The utility model relates to the technical field of coal mines, in particular to a blast hole sealing device for coal mine underground top cutting blasting, which is characterized in that the top of a top frame is fixedly connected with a top plate, the top of the top plate is fixedly connected with a hydraulic oil cylinder through a bolt, and an output shaft of the hydraulic oil cylinder penetrates through the top plate and is fixedly connected with the top of a fixed plate; a plurality of supporting rods are fixedly connected to the bottom of the fixing plate, the extending ends of all the supporting rods sequentially penetrate through the top of the top frame and the side wall of the bearing cylinder, and an annular plate is fixedly connected to the bottom of the fixing plate. Through the design of the supporting rod and the inserting rod, connection between the hole sealing device and the inner wall of the blast hole is firmer, the problem that traditional hole sealing materials such as yellow mud fail to be sprayed out due to axial impact force generated by explosive explosion is solved, and therefore the overall stability and sealing performance of blast hole sealing are improved; the whole device can be tightly attached to the inner wall of the blast hole, and stability is achieved through a mechanical structure instead of a loose hole sealing agent.

The utility model relates to utilize the technical field of dewatering of arc screen, especially, relate to a kind of electric beating device for coal preparation plant arc screen, including drive unit, rotating mechanism and beating mechanism, the beating mechanism includes spring and horizontal beating pole, its core technical scheme lies in, rotating mechanism drives beating mechanism to move along motion locus, in the process of being lifted to beating mechanism, its own weight makes spring be compressed to store energy;When beating mechanism falls back to the lowest point of its motion locus, horizontal beating pole impacts arc screen.The utility model can also adjust the pre-tightening force of spring by the first adjusting mechanism including upper spring adjusting plate and lower spring adjusting plate, and adjust the depth of beating by adjusting the length of vertical beating pole as second adjusting mechanism.Solve the problems of easy clogging of arc screen, damage equipment and affect product quality in the prior art.

The utility model discloses a novel wall bushing stripping tool, including mould and the wall bushing that needs to separate in the mould, the fixed hole is opened to the mould bottom, the stripping tool includes frock frame, pulling mechanism and mould positioning mechanism, and the pulling mechanism and mould positioning mechanism are oppositely arranged on frock frame. The utility model relates to the technical field of dismounting frock, and the frock integrates the automatic hoist, the lifting rotating mechanism and the locking assembly, realizes the mechanization operation from mould positioning, locking to bushing pulling, separates, shortens single piece stripping time, and effectively promotes overall production efficiency. Through coaxial opposite setting of pulling mechanism and mould positioning mechanism, it is ensured that pulling force is stably applied along the wall bushing axis, the lateral force and impact force produced by traditional knocking, prying and other modes are avoided, the damage of the wall bushing and mould in the stripping process is effectively prevented, and the product yield and mould service life are significantly improved.

The utility model relates to the technical field of transmission devices, in particular to a high-rotating-speed gear transmission device which comprises an upper cover, an inner gear cylinder, a lower cover and a transmission assembly. The lower portion of the upper cover is connected with an inner tooth cylinder through a bolt, the lower portion of the inner tooth cylinder is connected with a lower cover through a bolt, and a transmission assembly is arranged in the upper cover, the inner tooth cylinder and the lower cover. The transmission assembly comprises an upper supporting frame rotationally connected to the inner wall of the upper cover through a needle bearing, and a driving bevel gear a is rotationally arranged on the inner wall of the upper supporting frame in a penetrating mode through the needle bearing. According to the gear transmission device with the high rotating speed, teeth on the driving bevel gear a, the transmission bevel gear a, the driving bevel gear b, the transmission bevel gear b and the inner wall of the inner tooth cylinder are all helical teeth, during meshing, impact force caused by sudden contact is avoided, and transmission is more stable; according to the high-rotating-speed gear transmission device, all parts are subjected to heat treatment, meanwhile, the heat dissipation capacity is improved through the heat dissipation fins on the outer sides of the upper cover, the inner tooth cylinder and the lower cover, and the high-rotating-speed gear transmission device is higher in high-temperature resistance and wear resistance.