68results about How to "Reduced risk of slippage" patented technology

The invention discloses a fire-reconnoitering and fire-extinguishing robot. The fire-reconnoitering and fire-extinguishing robot comprises a caterpillar chassis, a fire-extinguishing water cannon anda reconnoitering mechanism, wherein the fire-extinguishing water cannon and the reconnoitering mechanism are arranged on the caterpillar chassis; the caterpillar chassis is composed of a chassis body,a chassis shell, a suspension cross beam, driving wheels, a driven wheel set, support belt wheel sets, bearing wheel sets, damping plate sets, elastic components, an approach wheel set, tensioning mechanisms, an obstacle avoidance assembly, a warning assembly, a driving assembly, a controller, a wireless transmission assembly, caterpillar assemblies, a dustproof cover plate, searchlights and a lithium battery. Through the fire-reconnoitering and fire-extinguishing robot, the problem of slippage and removal between the driving wheels and the caterpillar is solved; the efficient transmission between the driving wheels and the caterpillar is achieved; the adhesion performance between a suspension system with the caterpillar in the obstacle surmounting process is ensured; the stability of therobot when surmounting the obstacles and climbing can be also improved; the function of tensioning the suspension system on the robot is achieved; the safety and the stability of movement of the robot are further improved; the maintenance difficulty and the usage cost of the robot are reduced.

The invention relates to the technical field of civil construction engineering and particularly relates to and discloses a combined member for co-constructing a deep soft foundation river way and a river embankment. The combined member comprises an embankment subjected to foundation treatment, a river bank retaining wall built at a slope toe of an embankment slope, and a river bed dug at the outer side of the retaining wall; a river way is composed of the retaining wall and the river bed; a foundation adopts a solidification water discharging method or flexible pile compound foundation; anti-sliding piles are buried below a slope body region of the embankment slope and an embankment earth shoulder. The invention further discloses a construction method of the combined member. The construction method sequentially comprises the following steps: partially unloading the embankment after the embankment is pre-pressed; piling the anti-sliding piles, an inclinometer and a retaining wall pile and building the river bank retaining wall; digging the river way and monitoring slope deformation; recovering embankment filling and the like. With the adoption of the combined member and the construction method thereof, the river way is very close to the embankment foundation and the land is saved; the foundation can be treated by using the solidification water discharging method and the construction cost is low; the slip risks can be effectively reduced and the deformation coordination problem between the members can be solved well; the combined member has the advantages of economical efficiency, safety and environmental friendliness.

Disclosed are a degradable zinc alloy peritoneoscope hemostatic clip and a preparing method thereof. The degradable zinc alloy peritoneoscope hemostatic clip is made of a zinc alloy. As for the components of the zinc alloy, an alloy element Mg is added into a pure zinc matrix. The degradable zinc alloy peritoneoscope hemostatic clip has the advantages that by introducing an arc structure and additionally arranging a lock catch, anti-slide insections and a limiting protrusion, stress concentration after the metal hemostatic clip is closed is effectively improved, meanwhile the clamping propertyof the hemostatic clip is effectively improved, and the risk of sliding off of the hemostatic clip after an operation is reduced; zinc is a necessary element of the human body, the good biocompatibility and absorbability are achieved by using the hemostatic clip prepared through the zinc alloy, and meanwhile, the service time of the hemostatic clip is increased obviously through the appropriate degradation in vivo characteristic of the hemostatic clip; the hemostatic clip is simple and easy in structure and simple in preparation technology, and the preparation cost is reduced effectively; andthe designed and prepared hemostatic clip fully meets the clinical use requirement.

The invention provides an integral jointing method of a cantilever beam of a self-elevating drilling platform. The method is characterized in that the cantilever beam and a main hull are jointed; a towing position, a supporting point and a clamping point are arranged on the main hull in advance, wherein the supporting point is used for supporting the cantilever beam during drilling, and the clamping point is used for fixing the end part of the cantilever beam; a ballast system in a preset ratio is arranged on the main hull. The method comprises the steps of providing a barge on which a barge ballast system is arranged, and initially aligning and positioning the barge with the main hull; B, launching the cantilever beam to the barge through a slipway; C, accurately aligning and positioning the main hull with the barge; D, sliding the cantilever beam to reach the preset position on the main hull to finish the jointing of the cantilever beam and the main hull, wherein the floating states of the main hull and the barge are gradually adjusted during sliding. With the adoption of the method, the integrity of a cantilever beam module can be ensured, the problem of renting a large floating crane or a shore crane can be solved, and the risk that the pile insertion is failed to cause the failure of integral jointing can be avoided.

The invention relates to a blowout prevention packer applied to oil production engineering of petroleum and nature gas industry and solves the problems of packing of oil-gas production layer and downhole blowout prevention. The technical scheme adopted by the invention is as follows: a sliding pin is fixed in a pin hole in the lower part of a locking cylinder; locking steel balls are mounted in three through holes in the middle part of the locking cylinder; the upper end of a connection cylinder is in screwed connection with the lower end of the locking cylinder; the lower end of the connection cylinder is in screwed connection with the upper end of an anchoring cylinder; an upper spacer ring, a sealing adhesive cylinder and a lower spacer ring are integrally sleeve the outer circle of the connection cylinder; anchoring claws are mounted in three groups of step through holes in the upper part of the anchoring cylinder; the upper end of a sealing core shaft is in screwed connection with the lower end of an oil sealing core shaft; the lower end of the sealing core shaft is in screwed connection with a ball seat; the ball seat is mounted on the raised step surface at the lower part of an inner cavity of a lower joint; a sealing steel ball is mounted on the ball surface in the center of the upper end surface of the ball seat. The blowout prevention packer is capable of sealing and unsealing by using a manner of injecting liquid into tube pillars, is convenient and simple to control, and is also capable of automatically achieving downhole high-pressure sealing in a case of blowout and ensuring safety in production.

The invention discloses a setting device for windowing sidetrack drilling. The device comprises a barrel body assembly, an input head and a center shaft, wherein a slip groove is formed in a barrel wall of the barrel body assembly, and a slip is arranged in the slip groove; the input head is rotatably and axially movably arranged in the barrel body assembly, and the input head is used for being connected with an external whipstock; the center shaft is rotatably and axially movably arranged in the barrel body assembly and is in transmission connection with the input head, the center shaft is provided with a cam cone, the cam cone is provided with a large end and a small end, the cross section of the cam cone is in a cam shape, when the center shaft moves to the slip ejection position in the direction from the small end to the large end relative to the barrel body assembly, the center shaft is axially positioned at the slip ejection position relative to the barrel body assembly, the cam cone pushes the slip to turn over outwards, the center shaft rotates relative to the barrel body assembly to the high point of the outer cam surface of the cam cone to act on the slip, and the cam cone pushes the slip to turn over outwards by a larger angle. The meshing force between the slip and a casing pipe is increased, and the risk of slippage in the windowing sidetrack drilling process is reduced.

The invention discloses a surgical cart pedestal with a parking function. The surgical cart pedestal comprises a pedestal body, a first parking mechanism arranged at the bottom of the pedestal body and distributed in a triangular shape; the first parking mechanism comprises a foot rest, a supporting leg used for controlling the parking of the pedestal body, and a connection rod mechanism which controls lifting of the supporting leg via the foot rest; idle wheels are arranged under the pedestal body, and used for driving the pedestal body to slide. The device is provided with the extensible movable supporting leg, so that supporting distance of a support in the length direction is increased, and thus the support pedestal can be flexibly applied to occasions with different supporting requirements. Meanwhile, the parking mechanism is arranged at the support pedestal, so that stability during a surgical process is increased, and the sliding risk of an operating table is reduced.

The invention discloses a new energy automobile brake control device. The new energy automobile brake control device comprises a brake disc, wherein a brake caliper is arranged on the edge of the outer side of the brake disc in a sleeving mode, the brake caliper comprises a cover plate and an operation frame which are fixed together through a bolt, a second brake disc and a first brake disc are respectively arranged on side walls, close to each other, of the cover plate and the operation frame, the first brake disc comprises a flat-plate-shaped bottom plate, positioning blocks are fixed at twoends of the bottom plate through bolts, long-strip-shaped friction plates are fixed on the bottom plate through bolts, a dummy plate is tightly pressed between each two adjacent friction plates, andan adjustment piece is bound in each positioning block. The second brake disc and the first brake disc realize buffering through an arranged buffering structure in braking, and good protection effectis achieved.

The invention discloses a duct piece lifting system and a lifting method. The problem that an existing duct piece lifting system is not suitable for large-gradient duct piece lifting is solved. The duct piece lifting system comprises a rubber wheel conveying device, a duct piece quick unloading device, a suction cup type duct piece crane and a duct piece conveying device. The suction cup type segment crane comprises a walking frame body, an inclination angle adjusting mechanism is arranged on the walking frame body, a vacuum suction cup is arranged on the lower portion of the inclination angle adjusting mechanism, and an anti-falling mechanism is arranged on the vacuum suction cup. Synchronous lifting mechanisms are arranged on the two sides of a walking bottom frame of the duct piece conveying device, and limiting mechanisms are arranged on a sliding frame and a jacking frame. The material transportation system is an important component of shield method construction, and the design quality of the material transportation system is directly related to the whole machine performance and the overall construction. Compared with a conventional transportation mode, the novel material transportation system is adopted under the large-gradient working condition, the construction efficiency is greatly improved, the construction period is effectively shortened, meanwhile, the construction cost is reduced, and the construction safety and civilization are improved.

The invention relates to a wheel rim driving device, and belongs to the technical field of engineering machinery transmission. The device includes a motor which is mounted on the outer side of a wheelframe to determine a spin axis, the inner output end of the motor is connected with a torque tube supported on the wheel frame through a gear device, the torque tube is fixedly connected with the inner end of a wheel hub sleeving outside the motor, and the outer end of the motor is connected with the wheel frame through a braking device and connected with the outer end of the wheel hub to form anouter sealing device, wherein the two ends of the wheel hub are fixedly connected with the outer end of an inner rim and the inner end of an outer rim in a sleeving mode correspondingly. Compared with the prior art, according to the wheel rim driving device, the wheel hub and the inner and outer rims are independently fastened and connected, the slip risk of the intermediate friction surface torsion is significantly lowered, stress when bolts are clamped, fastened and connected is only half the original, the stress condition is better, in addition, a hub adapter is reduced, and the structureis simpler.

The invention discloses a two-wheeled pedal type electric bicycle with an insert connection child seat.The two-wheeled pedal type electric bicycle comprises a bicycle body (1), a bicycle seat (2) and a child auxiliary seat (3).The bicycle body below the front of the bicycle seat is provided with a vertical auxiliary seat bin (12), and the auxiliary seat bin comprises a bin door which is opened or closed up in a left-right mode.The child auxiliary seat is hinged to the front end of the bicycle seat and comprises a seat plate (31), a longitudinal beam (32), a telescopic supporting beam (33) and a hinged lug base (34).The longitudinal beam is of a groove steel structure with a downward notch and is fixedly installed on the bottom plane of the seat plate.The telescopic supporting beam is of a rod-shaped structure matched with the size of the inner wall of a groove-shaped structure of the longitudinal beam and is in connected into the longitudinal beam in an inserted mode.The hinged lug base is fixedly installed at the rear end of the longitudinal beam.A hasp (11) matched with a hasp mechanism of a hinged supporting beam is arranged at the position of the inner side of a bicycle head above a pedal of the bicycle body.The pedal type electric bicycle is provided with the child auxiliary seat, no extra space is occupied, children can ride on the electric bicycle conveniently, and a driver can get on or off the electric bicycle conveniently.

The invention discloses an apparatus for preventing esophageal lumen stenosis after ESD (endoscopic submucosal dissection). The apparatus comprises an air sac and an inflation tube, wherein the air sac is in the shape of a tube in the inflation condition, a magnetic force closure device is arranged at the bottom of the air sac, the inflation tube extends into a lumen of the air sac from the magnetic force closure device, and fixing rings are arranged at outside edges of the top and the bottom of the air sac; the magnetic force closure device comprises two or more sealing slices and an inflation hole, wherein the two or more sealing slices are connected in a magnetic adsorption manner, and the inflation hole is adapted to the inflation tube; and a plurality of exhaust holes are formed in the periphery of an exhaust end of the inflation tube, and are in helical arrangement. The apparatus disclosed by the invention can well support an esophagus, can contribute to autonomous eating and drinking of a patient, and is reliable to fix.

The invention relates to a unidirectional mechanical locking hydraulic cylinder and belongs to the field of a hydraulic cylinder. The unidirectional mechanical locking hydraulic cylinder comprises a hollow cylinder body and a piston rod; one end of the piston rod is positioned in the cylinder body; a wedged stop block is arranged at one end, positioned in the cylinder body, of the piston rod; thedirection of a wedge tip of the wedged stop block is arranged along the axis direction of the piston rod; a limiting stop block is arranged on the piston rod on one side of the wedge tip of the wedgedstop block; the limiting stop block is positioned in the cylinder body; a plurality of balls cooperatively used with the wedged stop block are arranged between the wedged stop block and the limitingstop block; an annular floating piston is arranged on the piston rod on one side of the bottom end of the wedged stop block; a push rod for pushing the positions of the balls is arranged on one side,near the balls, of the floating piston; the push rod performs reciprocating sliding together with the floating piston in a gap between the wedged stop block and the cylinder body; and the unidirectional mechanical locking hydraulic cylinder can realize unidirectional mechanical locking, can avoid displacement of the piston rod, is simple in structure and convenient to lock and can effectively reduce the slip risk of the hydraulic cylinder.

The invention discloses a computer-controlled hospital drug sorting system composition frame, and belongs to the technical field of sorting systems. The problem that according to traditional sorting boxes, covers of the traditional sorting boxes are connected through long-shaft-shaped pin shafts, because the sorting boxes have a certain length, pin shafts with a sufficient length are needed for connecting the covers of the sorting boxes, and the pin shafts are not easy to be fixed, so that loosening and separating are prone to occurring is solved. According to the scheme, the computer-controlled hospital drug sorting system composition frame includes sorting boxes, and the sorting system frame consists of the sorting boxes connected end to end. The risk of slipping of the covers of the sorting boxes is reduced through the limiting design of a limiting pin in the device, through the meshing sleeving connection design between a lead screw tooth sleeve and a lead screw, the limiting pin can be conveniently driven to move horizontally, so that rectangular clamping blocks are clamped or separated, through the design of a limit clamping piece, the lead screw tooth sleeve can be conveniently and rotatably limited, and the stability of the limiting pin is further improved.

The invention relates to a shell stator assembly of a flat wire motor and an assembling method thereof, and relates to the technical field of motors. The shell stator assembly comprises a shell, a stator assembly, a lower sealing cover and an upper sealing cover, wherein the stator assembly is accommodated in the shell, and a gap exists between the stator assembly and the shell; the lower sealing cover covers the bottom end of the shell; the top end of the shell is covered with the upper sealing cover in a sealing mode; a glue injection opening communicated with the gap is formed in the upper sealing cover; and the outgoing line of the stator assembly extends out of the glue injection opening. The assembling method comprises the following steps: arranging the stator assembly into the shell in an interference fit hot sleeve manner; after cooling, froming a gap between the stator assembly and the shell; covering the bottom end and the top end of the shell with the lower sealing cover and the upper sealing cover respectively; and injecting a pouring sealant into the sealant injection opening, so that the gap is filled with the pouring sealant.