90results about How to "Avoid collision wear" patented technology

The invention relates to a structure of a reversing valve. The reversing valve comprises a control reversing valve and an action reversing valve, and two groups are matched to realize flow velocity variable control over a pressure medium. Compared with the prior art, the structure of the reversing valve has the advantages that: through a design of a second valve rod and two overflow valves, when a piston moves to be about to contact the end of a piston cylinder, the reflux quantity of the pressure medium is reduced, and the motion resistance of the piston is increased, so that the motion velocity of the piston is reduced, the piston slowly touches the end of the piston cylinder, the piston and the end of the piston cylinder are prevented from being collided and worn when the piston moves at a high speed, the service life of the piston cylinder is effectively prolonged, and the operation safety and stability of the piston cylinder are ensured simultaneously.

The invention discloses an undercarriage of an unmanned plane. The undercarriage comprises the unmanned plane, wherein the left side and the right side of the bottom end of the unmanned plane are respectively provided with a first connecting plate; second connecting plates are connected with first inner plates by convex blocks; undercarriages are arranged at the centers of the bottom ends of the second connecting plates; the centers of the inner sides of second inner plates are respectively provided with a supporting rod block; a plurality of first stopping blocks are arranged between the inner walls of the supporting rod blocks; first sliding rods are arranged between the first stopping blocks; the outer walls of the first sliding rods are respectively connected with a first sheathing plate in a sheathing manner; and second supporting rods are arranged at the centers between the inner sides of the first sheathing plates. According to the undercarriage disclosed by the invention, whenthe unmanned plane lands, by matching of the first connecting plates and the second connecting plates, the undercarriage can support the unmanned plane which is ready to land; and by buffering of thedevice, the unmanned plane is prevented from generating impact with the ground to avoid causing internal damage when in landing, and the failure of flying of the unmanned plane due to faults caused byimpact is effectively avoided.

The invention discloses a channel gate for hydraulic engineering, which comprises a gate body, a supporting seat and two deicing devices, wherein the two deicing devices are correspondingly arranged on the front side and the rear side of the supporting seat and each comprise a driving motor, a rotating screw rod and a deicing head, the driving motors are positioned on the top surface of the supporting seat, the top ends of the rotating screw rods are connected with the driving motors, and the deicing heads sleeve the rotating screw rods. The mounting method comprises the following steps: (1) preparing construction; (2) installing a channel gate; (3) installing a winch; and (4) and running in a trial mode. The channel gate is simple in structure, the gate body can be more conveniently mounted through the design of the supporting seat, and the structure of the channel gate is firmer and more reliable; and meanwhile, through the design of the deicing devices on the two sides of the gate body, when the surface of the channel gate is frozen, deicing is performed on the two sides of the channel gate, so that the channel gate can be normally used in cold and frozen seasons, and the channel gate is more convenient to use.

The invention discloses an air valve bridge and an engine comprising the air valve bridge. The air valve bridge comprises an air valve bridge body which is provided with a main piston cavity, an executing pin installing cavity, a main piston arranged in the main piston cavity, and an executing pin arranged in the executing pin installing cavity; an elastic piece is arranged between the executing pin and the executing pin installing cavity; under the action of the elastic force of the elastic piece, the lower end of the executing pin stretches out of the executing pin installing cavity; the air valve bridge body is provided with a first oil drainage channel communicating with the main piston cavity; and a second oil drainage channel with one end communicating with an oil returning cavity of the engine is formed in the executing pin. Due to the arrangement, the air valve bridge is provided and can solve the technical problems that collision and abrasion happen to a sealing device and the air valve bridge, and the arrangement of the sealing device is difficult.

The invention provides an elasticizer cooling device which is characterized by comprising a cooling box, a cooling roller, refrigeration fans, rotating shafts, a supporting frame and a base. The cooling roller is arranged in the cooling box, the refrigeration fans are arranged on the upper side and the lower side of the cooling roller, the rotating shafts are arranged at two ends of the cooling roller, the other end of each rotating shaft is connected at the upper end of the supporting frame, and the lower end of the supporting frame is connected with the base. Compared with the prior art, theelasticizer cooling device is reasonable in structure, air cooling is mutually combined with water cooling, cooling efficiency is improved, silk threads can be fixed by the aid of a cooling channel,shake of the silk threads caused by wind is prevented, collision abrasion is avoided, the cooling roller can rotate by the aid of the rotating shafts, and entering, exiting and advancing of the silk threads are facilitated.

The invention discloses a multi-layer sleeve structure which comprises an external sleeve and a neck bush; a port of the neck bush is provided with a buffer segment, the buffer segment coats the port of the external sleeve; an anti-skid device is arranged between the external sleeve and the neck bush; the anti-skid device comprises a plurality of grooves arranged on the external sleeve, and the corresponding flanges arranged on the neck bush; the anti-skid device comprises a plurality of flanges arranged on the external sleeve, and the corresponding grooves arranged on the neck bush; the flanges take the shape of arc, rectangle or triangle, the grooves are the corresponding shapes; the external sleeve is made of steel material and the neck bush is made of aluminum material. The multi-layer sleeve structure causes steady and reliable integration of the external sleeve and the neck bush and avoids directly impacting the working face in operation, so as to prolong the service life.

The invention discloses straw feed crushing equipment. The straw feed crushing equipment comprises a housing, a first crushing roller arranged in the housing, and a second crushing roller matched withthe first crushing roller; a dewatering device is arranged below the first crushing roller and the second crushing roller, the dewatering device comprises a dewatering basket, a driving piece used for driving the dewatering basket to rotate and a discharging pipe connected with the dewatering basket, and the discharging pipe is matched with the driving piece. The straw feed crushing equipment canrapidly throw out moisture on crushed straw, then the straw is in a half-dry state, moisture on the straw is greatly reduced, and the quality of stored straw powder and feed can be easily ensured.

The invention discloses an integrated tempering and cleaning frame and a tempering and cleaning method for glass. The integrated tempering and cleaning frame comprises a main frame and a support frame, the support frame is detachably arranged below the main frame, the main frame comprises a tempering frame body, a tempering pipe device and an upper cleaning rubber rack, and the support frame is provided with a U-shaped bracket and a lower cleaning rubber rack. A tempering frame and a cleaning frame which are used in the tempering and cleaning process of the glass are integrated into an integrated clamping fixture, and the number of clamping fixtures used in the tempering and cleaning process is reduced to make the process more convenient; without transferring the glass one by one manually, simple operation only needs to be conducted on the integrated clamping fixture to make the tempering and cleaning frame to rotate, so that the operation time is saved, the working efficiency is improved, and the manpower cost is reduced; meanwhile, big actions do not need to be conducted on the glass, the collision and damage to the glass are avoided, and the glass is better protected.

A multi-layer sleeve structure comprises an external sleeve and an internal lining; a non-slip device is equipped between the external sleeve and the internal lining; the non-slip device comprises a plurality of grooves equipped on the external sleeve and corresponding flanges equipped on the internal lining; the non-slip device also comprises a plurality of flanges equipped on the external sleeve and corresponding grooves equipped on the internal lining; the flanges are arc, rectangular or triangular ones and the shapes of the grooves are matched figures; the external sleeve is made of steel material and the internal lining is made of aluminum material. With the present invention, the combination of the external sleeve and internal lining is stable and firm and direct impact on the working face is avoided in operation, which prolongs the service life.

The invention discloses a portable power maintenance box. The portable power maintenance box comprises a back plate, wherein a first box body and a second box body are respectively hinged with the left side and the right side of the back plate through hinges; the bottom part of the back plate is fixedly connected with a bottom plate; a support plate is fixedly connected between the two sides of aninner wall of the first box body; the inner part of the first box body and the lower part of the support plate are connected with a tool box in a sliding manner; a baffle plate is fixedly connected between the two sides of the inner wall of the first box body and is connected with the upper part of the support plate; a partition plate is fixedly connected between the rear side of the inner wall of the first box body and the baffle plate; and the top part of the support plate and the right side of the partition plate are fixedly connected with a limiting plate. The invention relates to the technical field of power maintenance equipment. The portable power maintenance box has a sufficient internal space for putting maintenance tools, so that collision and abrasion between the tools can be ensured, the maintenance box still can be carried during high-altitude operations, and thus, the maintenance box is very convenient to use, and moreover, the use comfort level of maintenance personnelcan be obviously improved.

Disclosed is a novel logistics container storing and locking device. The novel logistics container storing and locking device is used for locking a logistics container (2) in a container storage groove (101) in a logistics shelf (1). A locking loading part (3) which is fixedly connected with the logistics shelf (1) and is internally provided with a hollow cavity (30) is arranged at the bottom of the container storage groove (101). Two bendable locking arms (21) distributed in a left-right-symmetry mode are integrally arranged on the rear end face of the logistics container (2) and are used for being inserted into the hollow cavity (30) of the locking loading part (3) through elastic deformation. An elastic component (391) is arranged on the front end face of the locking loading part (3) and is used for achieving a buffering function when the two bendable locking arms (21) are inserted into the hollow cavity (30) of the locking loading part (3) through elastic deformation.

The invention discloses a warehouse liquified petroleum gas cylinder valve transporting device. The warehouse liquified petroleum gas cylinder valve transporting device comprises a plurality of transporting blocks and connectors, connecting openings are formed in the positions, close to the middle, of the peripheries of the outer surfaces of the transporting blocks correspondingly, gas cylinder valve storing cavities are formed in the positions, close to the center, of the outer surfaces of the front ends of the transporting blocks, anti-collision silica gel layers are cemented to the peripheries of the inner surfaces of the gas cylinder valve storing cavities, and positioning holes are formed in the positions, close to the edge corners, of the outer surfaces of the front ends of the transporting blocks. By arranging a series of structures, the appropriate set number of transporting blocks can be selected and assembled according to the actual demand in the using process of the warehouse liquified petroleum gas cylinder valve transporting device, gas cylinder valves are stored separately and singly, collision and abrasion between the gas cylinder valves in the transporting process are avoided, the transporting process is stable, after being transported to a warehouse, the gas cylinder valves do not need to be arranged and stored again, the time and physical strength of workers are saved, the working efficiency is improved, and the use process is optimized.

The invention belongs to the technical field of dispensing valves, and particularly relates to an impact-free type piezoelectric injection dispensing valve. The piezoelectric injection dispensing valve comprises a valve body, a valve seat and a push rod; the valve body is fixedly connected with the valve seat; a nozzle is installed at the bottom of the valve seat; a first liquid storage cavity isarranged inside the valve seat; a piezoelectric driving mechanism is arranged at the center of the valve body; the upper end of the push rod abuts against the piezoelectric driving mechanism. and thelower end thereof penetrates through the first liquid storage cavity and is in clearance fit with a second liquid storage cavity which is arranged inside the nozzle; a first flow channel is arranged inside the push rod; and the first liquid storage cavity, the first flow channel and the second liquid storage cavity communicate with each other. Compared with the prior art, the piezoelectric injection dispensing valve realizes dispensing operation in an impact-free manner, a firing pin is replaced by the push rod so collision and impact of the nozzle and the firing pin are avoided, the precisionand efficiency of dispensing are improved, maintenance cost is greatly saved, service life of the device is improved, injection of glue solution containing solid granules is realized, the phenomenonof partial heating of the device is reduced, and the phenomenon of leakage of the glue solution is prevented.

The invention relates to the technical field of unmanned aerial vehicle information acquisition, and in particular relates to an information acquisition unmanned aerial vehicle convenient for mounting a camera. The unmanned aerial vehicle comprises an unmanned aerial vehicle body, a lifting mechanism, a camera shooting mechanism, a telescopic mechanism, an abutting mechanism, a guide mechanism and a locking mechanism. The lifting mechanism is controlled by the unmanned aerial vehicle body, so that the unmanned aerial vehicle body flies, real-time state and information can be collected under the action of the camera shooting mechanism, detection by workers is facilitated, the camera shooting mechanism can be propped against under the action of the abutting mechanism, and shaking is prevented; meanwhile, under the action of the telescopic mechanism, mounting and dismounting of different camera shooting mechanisms are facilitated, meanwhile, the practicability of the unmanned aerial vehicle body is also improved, when the telescopic mechanism is adjusted, the telescopic mechanism is stably adjusted under the action of the guide mechanism, and after adjustment is completed, under the action of the locking mechanism, the guide mechanism can be limited, so that the telescopic mechanism is more stable and does not loosen.

The invention discloses a floor brush device for a dust collector. The floor brush device for the dust collector comprises a brush body, rear wheel devices, a base plate and front wheel devices, wherein the front portion of the brush body is connected with a suction groove, the middle of the brush body is provided with a suction hole, the suction groove is mutually communicated with the suction hole, a clamping block is arranged on one side of the bottom of the brush body, a connecting hole is further formed in the bottom of the brush body, and shaft holes are formed in two sides of the rear portion of the brush body. The rear wheel devices are arranged on two sides of the rear portion of the brush body, the rear portion of the base plate is provided with a connecting shaft, the connecting shaft is connected to the connecting hole in a pivoted mode, and a convex block is arranged on one side of the base plate and is clamped and connected to the clamping block. The front wheel devices are arranged at the front portion of the brush body. Collision and abrasion caused by unstability when the floor brush device moves can be effectively avoided by means of the front wheel devices and the rear wheel devices of the floor brush device for the dust collector, and the floor brush device for the dust collector is safe, reliable, quick and convenient to dismount, stable in movement and long in service life.

The invention discloses automatic purification packaging equipment of a PCB. A stirring motor is connected with stirring blades through stirring rods in a driving mode; the stirring blades are accommodated in a stirring barrel; at least a part of the stirring rods are accommodated in the stirring barrel; the outer side wall of the bottom of the stirring barrel is provided with a first cleaning spray head; the first cleaning spray head is arranged above a support frame; the spraying direction of the first cleaning spray head faces the support frame; a defoaming spray head is communicated with adefoaming barrel through a defoaming pipe; the defoaming spray head is accommodated in the stirring barrel; the defoaming spray head is arranged on the top of the stirring barrel; the cleaning barrelis communicated with the stirring barrel through a cleaning pipe; a clear water barrel is communicated with the stirring barrel through a clear water pipe; and each of the defoaming pipe, the cleaning pipe and the clear water pipe is provided with an electric valve respectively. The end, communicated with the stirring barrel, of the cleaning pipe is provided with a first atomizing nozzle, the first atomizing nozzle is accommodated in the stirring barrel, the end, communicated with the stirring barrel, of the clear water pipe is provided with a second atomizing nozzle, and the second atomizingnozzle is accommodated in the stirring barrel.