34results about How to "Avoid head-to-head" patented technology

The invention discloses an anti-seismic assembled stair supported by a sliding connection between an upper end and a lower end. The stair comprises a horizontally arranged platform, an obliquely arranged upper ladder beam with a high left end and a low right end, and an obliquely arranged lower ladder beam with a low left end and a high right end, wherein the upper ladder beam and the lower ladderbeam are of assembled steel concrete combined structures, a platform beam is arranged at the bottom of the left side of the platform along the front-rear horizontal direction, a plurality of supportcorbels are arranged on the platform beam, the front side part of the right end of the upper ladder beam is connected with at least two support corbels through a front sliding connection support assembly, and the rear side part of the right end of the lower ladder beam is connected with at least two support corbels through a rear sliding connection support assembly. The stair has light weight, strong stability of the steel concrete combined structure, good damping and sliding regulation effects, and can avoid the generation of cracks or even fractures caused by stresses generated between the upper ladder beam and the lower ladder beam and the platform.

The invention belongs to the technical field of building equipment, and in particular relates to a secondary stirring device with good protection performance for building. The secondary stirring device aims at solving the problems of low protection performance of a stirring rod, low stirring efficiency and poor stirring effect. The secondary stirring device comprises a bottom plate. A water tank and a tank body are welded to the top outer wall of the bottom plate, and a water pump is fixed on the top outer wall of the water tank by bolts. A first motor is fixed on the top outer wall of the tank body by bolts, and a first transmission rod is welded to the bottom of an output shaft of the first motor. The secondary stirring device can drive the stirring rod to rotate by a hinge when a hard object is encountered, and the angle is adjusted avoid hard contact with the object. The safety of the stirring rod is improved, the stirring device can spray water during the stirring, the stirring efficiency is improved, and the stirring device can spray water to clean the tank body after stirring to facilitate next use. The stirring device can drive a second transmission rod and stirring bladesto rotate to stir raw materials again, and the stirring effect of the device is improved.

The invention belongs to the field of plate processing, and particularly relates to a plate cutting device capable of achieving automatic stabilization and self-cleaning. The plate cutting device comprises a workbench, two symmetrically-arranged placement blocks are fixedly connected to the workbench, a support is fixedly connected to the workbench, two symmetrically-arranged reciprocating lead screws are rotatably connected to a portion between the support and the workbench, sleeves are connected to the reciprocating lead screws in a threaded manner, and a frame is fixedly connected to a position between the two sleeves. According to the plate cutting device capable of achieving automatic stabilization and self-cleaning, through cooperation of a first linkage mechanism, a second linkage mechanism and a driving mechanism, a cutting knife and a pressing plate can be matched with air suction fan blades to synchronously work, and therefore it is guaranteed that the pressing plate presses a wood board in the cutting process, the wood board is kept stable, and manpower consumption is avoided; and meanwhile, in the cutting process, chippings generated by air suction of the air suction fan blades can be utilized, and therefore the situation that the chippings fly randomly and pollute the surrounding environment is avoided.

The invention relates to a double-effect damage prevention roller treatment device. Treatment plates provided with spring rods are arranged on the side wall of a roller, and springs of the treatment plates can be compressed, so that gaps between the treatment side wall on the periphery of the roller and roller teeth are larger; a plurality of groove holes are formed in the treatment roller, the roller teeth are embedded in the groove holes, and the springs and sleeves are arranged on the lower portions of the roller teeth; and the roller teeth can retract into the groove holes when bearing thelarge external force action, accordingly damage of the roller teeth due to overlarge external force is avoided, and thus the roller teeth can be preserved. After chunks of materials or materials beyond the treatment capacity of the roller are discharged from the roller, the springs push the roller teeth out of the groove holes again, the tooth top faces of the roller teeth are higher than the outer edges of the groove holes, and treatment work conforming to the treatment capacity of the roller is conducted. In addition, the springs with different maximum elastic force can be further replacedaccording to the different treatment materials, so that the adaptability of the roller is further improved.

The invention discloses an anti-seismic assembled stair supported by a fixed upper end and a slidably connected lower end. The stair comprises a horizontally arranged platform, an obliquely arranged upper ladder beam with a high left end and a low right end and an obliquely arranged lower ladder beam with a low left end and a high right end, wherein the upper ladder beam and the lower ladder beamare of assembled steel concrete combined structures, a platform beam is arranged at the bottom of the left side of the platform along the front-rear horizontal direction, a plurality of support corbels are arranged on the platform beam, the front side part of the right end of the upper ladder beam is connected with at least two support corbels through a sliding connection support assembly, and therear side part of the right end of the lower ladder beam is fixedly connected with at least two support corbels. The stair has light weight, strong stability of the steel concrete combined structure,good damping and sliding regulation effects, and can avoid the generation of cracks or even fractures caused by stresses generated between the upper ladder beam and the lower ladder beam and the platform.

The invention relates to a vehicle safety belt, a pyrotechnic safety belt pretensioner and a flexible strip-shaped drive element. The drive element (12) comprises a piston and a flexible strip-shapedmain body, the piston is formed at the first end, facing a pyrotechnic device (10), of the main body, the piston is in interference fit with a tubulous shell (11), and the main body is in clearance fit with the tubulous shell (11). The main body comprises a flexible strip-shaped metallic framework and a plastic body which is arranged on one side of the metallic framework and connected with the metallic framework in a locked mode, the metallic framework is provided with notches which are arranged in rows in the longitudinal direction at intervals and located in the middle in the transverse direction, concave parts facing inwards in the radial direction are formed in at least one part of the notches, and therefore teeth which are arranged in rows in the longitudinal direction at intervals and located in the middle in the transverse direction are formed.

The invention relates to an anti-damage roller treating device. A treating roller is provided with a plurality of groove holes; roller teeth are buried in the groove holes; the lower portions of the roller teeth are provided with springs and sleeves; and when the effect of large external force is applied to the roller teeth, the roller teeth can retract into the groove holes, and therefore it is avoided that because the external force is too large, the roller teeth are damaged, and the roller teeth are protected against damage. When a large material or a material exceeding the treating capacity of the roller is discharged out of the roller, the roller teeth are ejected out of the groove holes by the springs again, the tooth top faces of the roller teeth are made to be higher than the outeredges of the groove holes, and the treating work conforming to the treating capacity of the roller is performed. Besides, springs with different maximum elastic force can be replaced according to different treated materials, and the adaptability of the roller is made further improved.

The invention provides a feed screw nut pair, a safety transmission device and a lifting mechanism, and belongs to the field of micro transmission devices. The feed screw nut pair comprises a screw rod, a nut, and a protection mechanism which is arranged in a feed screw hole, wherein the protection mechanism comprises a mounting hole, an elastic element and a marble; the mounting hole is formed inthe feed screw hole, and is dead against the outer surface of the screw rod; both the elastic element and the marble are accommodated in the mounting hole; and the elastic element is used for supplying elastic force, so that the marble extends out of the mounting hole to be pressed inside a threaded groove of the screw rod. When the axial load of the nut is too large, the elastic element is compressed by the marble to exit from the threaded groove, so that the nut is separated from the screw rod, the nut falls to the bottom end of the screw rod, the screw rod is in an idle state, and a safetyprotection effect can be achieved when the feed screw nut pair is matched with the transmission assembly and/or the driving device. The invention also discloses a safety transmission device and a lifting mechanism using the feed screw nut pair.

The invention belongs to the field of public facilities, and particularly relates to a garbage can capable of achieving dry-wet separation and automatic lid opening. The garbage can comprises a can body, the can body is fixedly connected with a transmission ground, the side wall of one side of the can body is fixedly connected with a liquid collecting can, a support is fixedly connected between the can body and the liquid collecting can, and a transmission cavity is formed in the support. According to the garbage can capable of achieving the dry-wet separation and automatic lid opening, by means of the gravity of a human body, a double-trigger switch acts, automatic lid opening can be achieved, meanwhile, electrorheological fluid can be converted between solid and liquid, a cover plate canbetter press garbage and close the can body, meanwhile, a sliding plate can be matched with the cover plate to move, waste liquid in the can body is sucked, dry-wet separation is achieved, a degradation cylinder can be matched with material scattering to realize pretreatment of the waste liquid and avoid irritant gas generated by fermentation of the waste liquid, and in addition, the device is powered by solar energy, so that the cost of additionally laying a circuit is avoided.

The invention relates to a double-effect anti-damage rolling drum smashing device. A plurality of treatment plates provided with spring rods are arranged on a rolling drum side wall, springs of the treatment plates can be compressed, and therefore gaps between the rolling drum peripheral treatment side wall and rolling drum teeth can be larger; a plurality of slotted holes are formed in the treatment rolling drum, and the rolling drum teeth are arranged in the slotted holes in a buried mode; and the springs and sleeves are arranged on the lower portions of the rolling drum teeth, the rolling drum teeth can retract to the interiors of the slotted holes under the effect of large external force, further the rolling drum teeth can be prevented from being damaged due to the over large externalforce, and therefore the rolling drum teeth can be kept to be intact. The multiple treatment plates matched with the treatment rolling drum are arranged on the rolling drum peripheral treatment side wall, the treatment plates are fixedly connected to the rolling drum peripheral treatment side wall through the spring rods, and the springs in the spring rods can be compressed. In addition, springs with different maximal elastic force can be replaced according to different treatment materials, and therefore the adaptability of the rolling drum is further improved.

The invention discloses an external locking type hinge and a shower door. The external locking type hinge comprises a movable seat, a fixed seat and a rotating shaft assembly, wherein the movable seatand the fixed seat are respectively connected with a movable door and a fixed door; the rotating shaft assembly is mounted between the movable seat and the fixed seat; the fixed seat is provided witha fixed main body and at least two first locking pieces; the fixed main body is correspondingly provided with at least two mounting holes; one end of each first locking piece fixedly penetrates through the corresponding mounting holes, and the other end of each first locking piece is used for being connected with the fixed door; the movable seat is provided with a movable main body and at least two second locking pieces; the movable main body is correspondingly provided with at least two mounting holes; and one end of each second locking piece fixedly penetrates through the corresponding mounting holes, and the other end of each second locking piece is used for being connected with the movable door. The external locking type hinge is convenient to mount outside the shower room, simple instructure and more attractive in overall appearance.

The invention relates to a multi-stage anti-damage roller smashing device. A treating roller is provided with a plurality of groove holes; roller teeth are buried in the groove holes; the lower portions of the roller teeth are provided with springs and sleeves; and when the effect of large external force is applied to the roller teeth, the roller teeth can retract into the groove holes, and therefore it is avoided that because the external force is too large, the roller teeth are damaged, and the roller teeth are protected against damage. The treating roller is sequentially divided into a plurality of different areas according to the marching direction of a machined material; each area is internally provided with the corresponding groove hole, the corresponding roller tooth, the corresponding sleeve and the corresponding spring, and the sleeve and the springs are matched with the roller teeth; and the springs in different areas have different maximum elastic force. Besides, the springswith different maximum elastic force can be replaced according to different treated materials, and the adaptability of the roller is made further improved.

The invention specifically discloses a flame welding gun fixing frame used for a welding robot. The flame welding gun fixing frame comprises a frame body, a supporting rod used for supporting a flame welding gun, two stretching springs positioned at left and right sides of the supporting rod and a snap joint which is welded at the lower end of the supporting rod for fixing a welding mouth of the flame welding gun, wherein the upper part of the frame body is formed with a connecting part which is fixedly connected with a welding robot body; the upper end of the supporting rod is movably hinged on the middle part of the frame body; and the two stretching springs are fixedly arranged between the frame body and the supporting rod respectively. In a length direction of the supporting rod, at least two rubber tubes used for the flame welding gun and a clamp unit for holding and collecting are further fixedly arranged; and the upper end of the supporting rod is provided with a triangular pointer tip. The flame welding gun fixing frame can effectively shorten action time or manual correction and regulation time of the welding robot, and improves the production efficiency; and collision of the welding mouth and a workpiece is avoided, and the service life of the welding mouth is prolonged.

The invention discloses a pedestrian crossing voice prompt column with buffering and anti-collision functions, and belongs to the technical field of pedestrian crossing voice prompt columns. The voiceprompt column comprises a base. A first rotating ball is movably arranged in an inner cavity of the first rotating groove. A column body is movably arranged at the top of the second rotating ball. Asecond rotating groove matched with the second rotating ball is formed in the middle of the bottom side wall of the column body. The bottom side wall of the supporting spring is connected with the topside wall of the base. The outer side wall of the column body is movably sleeved with a buffer air bag. Force bearing plates are evenly arranged on the outer sides, away from the column body, of thebuffer air bags. According to the device, the first rotating ball rotates in the inner cavity of the first rotating groove, and the second rotating ball rotates in the inner cavity of the second rotating groove, so that the column body inclines in the opposite direction, the collision with an attacking object is avoided, the buffering and anti-collision effects are achieved, damage to electronic devices in the inner cavity of the column body is avoided, and the service life of the device is prolonged.

The invention discloses a rotary distributor capable of uniformly distributing materials. In the rotary distributor capable of uniformly distributing the materials, a base plate is provided with a horizontal supporting surface; the distributing bin is supported on the supporting surface, and a feeding port is formed in the top cover; the rotating shaft penetrates through the chassis and extends into the accommodating space; the conical material distributor is arranged in the material distribution bin and below the material inlet, and the conical material distributor is connected with the rotating shaft to rotate along with the rotating shaft; the scraper is of an S-shaped structure, the first end of the scraper is connected with the rotating shaft, the second end opposite to the first end extends towards the side wall, and the hardness of the scraper close to the first end is larger than that of the scraper close to the second end. The at least one material distributing and discharging opening penetrates through the chassis in the accommodating space and is positioned below the part, close to the second end, of the scraper; the air blowing cleaning device is arranged on the material distribution bin so as to sweep air towards the chassis. The rotary material distributor capable of uniformly distributing the materials can improve the material distribution uniformity and improve the material distribution efficiency.