31results about How to "Avoid unbalanced load phenomenon" patented technology

The invention discloses a guide device for a slide beam of a hydraulic machine. An upper guide assembly is mounted on the upper end surface of the slide beam; a lower guide assembly is mounted on the lower end surface of the slide beam; the upper guide assembly comprises an L-shaped bracket, a hydraulic cylinder and a roller wheel; one free end of the L-shaped bracket is a coupling end; the roller wheel is coupled to the corner of the L-shaped bracket; a piston rod of a hydraulic cylinder is contacted with another free end of the L-shaped bracket. When the piston rod of the hydraulic cylinder extends out of the hydraulic cylinder, the L-shaped bracket deflects by taking the coupling end as a center, and the roller wheel on the L-shaped bracket is contacted with a guide column. The guide device has the advantages that the roller wheel acts on the column surface of the guide column under the action of the piston rod of the hydraulic cylinder when the slide beam moves up and down; as the roller wheel is in rolling friction with the surface of the guide column, the unbalanced load phenomenon caused when the slide beam moves up and down is avoided and the slide beam can very stably move up and down under the circumstance that the moving speed is more than 800 mm / s.

The invention discloses a shield propulsion system control method for eccentric load prevention, wherein the method belongs to the field of tunnel engineering technology. On the system according to the invention, a circular separator plate is fixedly connected with a shield body. Rock and soil which are cut by a cutterhead are conveyed out through a spiral conveyor. The right end of a hydraulic jack abuts against a pipe plate through a supporting boot. Furthermore the whole shield is pushed to perform frontward propulsion through a reaction force on a pipe plate. All hydraulic cylinders in thepropulsion system are uniformed arranged. According to the shield propulsion system control method, a radian theta and an azimuth phi are calculated according to geomechanics parameters in shield propulsion, thereby starting or stopping the hydraulic cylinder sets which are annularly, equidistantly and continuously arranged in the propulsion system. The control method according to the invention can adjust distribution of the hydraulic cylinders in real time, thereby setting an eccentric load problem in shield propulsion.

The invention provides a test piece for testing the uniaxial tensile property of fiber reinforced concrete and a test method thereof. The test piece is bone-shaped, and comprises clamping sections attwo ends, a middle test section and a force transmitting section, wherein the clamping sections are in a streamline form. The test method comprises test piece forming, demoulding, tensile test preparation and experimental data recording, wherein the test piece is poured in a molding cavity defined by two side plates, two end part clamping molds and a bottom forming template, during demoulding, thetest piece is taken down together with the clamping molds, and the clamping molds are connected with the testing equipment. According to the testing method provided by the invention, the clamping molds and the test piece integrally formed, the test piece and a clamping fixture are good in contact embedding degree, a stress concentration phenomenon is not easy to occur, force transmission is uniform, and the test piece can be directly installed on test equipment to be quickly and effectively tested; the test piece is bone-shaped, the sections thereof are in smooth transition, uniform stress and force transmission are achieved, fracture at a position outside the test section is reduced, and the test success rate is high.

A mouth-shaped pull-pressure sensor comprises a sensor body and strain gauges. The middle of the sensor body is hollowed to be mouth-shaped, the strain gauges are arranged on two sides of the inside of the sensor body, and the sensor body can be integrally formed and can also be formed by combining two sensor bodies. The mouth-shaped pull-pressure sensor is simple in structure, convenient to machine, accurate in measurement and high in deflection resistance, eccentric load is overcome, the structure of the sensor can serve as a portion of a shell, the strain gauges and other accessories inside the sensor are effectively protected, space is saved, the size of the sensor is reduced, the sensor body is provided with a structure connected with the outside, materials are saved, cost is reduced, using places are less limited, and compatibility and the applicable range of the sensor are expanded.

The invention discloses an automatic-assigned propulsion system used for shield deviated-load resisting. A circular round baffle plate is fixedly connected with a shield body, rocks and soil cut by acutter plate are delivered by a spiral delivering machine, a duct piece is jacked by the right end of a hydraulic lifting jack through a supporting boot, the whole shield is pushed to excavate forwards through the counter force on the duct piece, all hydraulic cylinders in the propulsion system are uniformly distributed. According to the shield deviated-load resisting propulsion system, data is collected through pressure sensors distributed on the exterior of the shield machine, the arc angle theta and azimuthal angle of the propulsion system are computed by a hydraulic control system to control the starting or stopping of a hydraulic cylinder group which is circularly, equidistantly and consecutively arranged in the propulsion system. By means of the method, the distribution of the hydraulic cylinders can be timely adjusted to solve the deviated-load problem of shield excavating.

The invention provides a high-speed train passive protection secondary buffer unlocking device. The end of a car coupler push rod of the device is fixedly connected with a first train, a car coupler push frame is of a hollow structure and is axially inserted with the car coupler push rod, a first-stage buffer aluminum honeycomb structure sleeves the periphery of the car coupler push rod, the first-stage buffer aluminum honeycomb structure is located between the car coupler push rod and the two ends of the car coupler push frame, a plurality of first pull rods penetrate through the ends of thecar coupler push frame and the first-stage buffer aluminum honeycomb structure to be fixed with the end of the car coupler push rod, and a plurality of second pull rods penetrate through the tail endof the car coupler push frame and a second-stage buffer aluminum honeycomb structure to be fixed with the side face of a second train; a guide part is arranged in the axial direction of the second-stage buffer aluminum honeycomb structure, an unlocking rod is inserted into a guide piece, and the four inclined blocks are hinged to the front end of an inclined block hinge barrel and are matched withthe inner inclined surface of the tail end of the car coupler push frame. The defect of an existing high-speed train energy absorption buffering technology is overcome, ordered dissipation of kineticenergy of the trains is realized, it is guaranteed that unbalance loading is not generated in the buffer process of the trains, and good dynamic stability is achieved.

The invention discloses an energy-saving and environment-friendly concrete mixing ship, which comprises a hull, a concrete production system and a living building; the concrete production system comprises a main mixing building, an aggregate building, an aggregate feeding system, an aggregate batching system and a waste concrete treatment system; The main mixing building includes left and right line mixing rooms, and there is a left and right line aggregate transition storage tank between the dust removal deck corresponding to the left and right line mixing rooms and the weighing deck; the mixing deck corresponding to the left and right line mixing rooms Install the left and right line mixing main engines; the aggregate building includes the left and right line aggregate rooms arranged symmetrically along the central axis of the hull; the aggregate feeding system includes a material receiving mechanism, a feeding mechanism and a material distribution mechanism; the aggregate batching system includes the left , Right line batching mechanism and transfer batching mechanism; waste concrete treatment system includes two flushing pipelines, sewage chute, sewage processor, vibrating screen, sewage tank, filter press and filter press clear water tank. The invention can improve the working environment, and can also balance the consumption of aggregates in the left and right line aggregate cabins, so as to realize continuous production of concrete.

The invention relates to an anti-eccentric load device, in particular to an anti-eccentric load device for a drum. The invention aims to solve the problem that the anti-eccentric load effect of the existing anti-eccentric load device for the drum is not good, and the drum is easily worn. The anti-eccentric load device for the rotating drum of the present invention includes a fixing component capable of being fixed on the casing and a flexible eccentric load absorbing component. The fixing assembly includes a support part located in the opening area of ​​the drum, and the flexible offset load absorbing assembly includes at least two elastic parts that can rotate relative to the support part or the wall of the drum, and at the same time, one end of each elastic part is connected to the support The other end is connected to the wall of the drum. The fixing assembly can provide stable support for the anti-eccentric load device. When the drum rotates, the flexible eccentric load absorbing assembly can adjust the swing of the drum in time, so that the rotation of the drum can be adjusted Under the action, it reaches the equilibrium state as soon as possible, thus effectively preventing the occurrence of partial load phenomenon.

The invention discloses an equal ratio series layout method for a shield propulsion system. A shield body, a support frame and N hydraulic cylinders are included, the shield body and the support frameare fixed, the N hydraulic cylinders are annular and are arranged on the support frame in symmetrical equal ratio series, the left ends of the hydraulic cylindersarepadded on a pressure-resistant hard rubber block and fixedly connected with the support frame,the right endsare supported on a tube piece by a support shoe, the entire shield is pushed to excavate forward by a reaction force of the tube piece, and a shield external load acts on the shield body and is transmitted to the tube piece through the hydraulic cylinders. The object of theinvention is to provide the equal ratio series layoutmethod for the shield propulsion system, the equal ratio series layoutmethod is adopted to arrange the hydraulic cylinders of the shield propulsion system, which can meet the installation requirementof uniform thrust points of the tube piece, and can solve the eccentric load caused by special geologies, variable loads and self-weight during the excavation process of the shield, a geological application range of the shield is increased, andthe rupture of the tube piece caused by the eccentric load is reduced.

The invention discloses a hydraulic cylinder arrangement control mechanism for a shielding tunneling machine. The hydraulic cylinder arrangement control mechanism comprises a shield body, a partitionplate, hydraulic cylinders, a supporting frame and a push-and-pull device; the supporting frame is arranged inside the shield body and fixedly connected with the shield body, the partition plate is arranged in the shield body, multiple groove holes are formed in the supporting frame in the extension direction of the axis of the shield body, and formed in the supporting frame around the axis of theshield body, the hydraulic cylinders penetrate through the groove holes, one ends of the hydraulic cylinders are backed on the side face of the partition plate, and the other ends of the hydraulic cylinders are jacked on duct pieces through support boots; the hydraulic cylinders are arranged around the axis of the shield body, one end of the push-and-pull device is hinged to hydraulic cylinder bodies, the other end of the push-and-pull device is hinged to the supporting frame, and the push-and-pull device is used for rotating the hydraulic cylinders around the axis of the shield body for adjustment. By means of the hydraulic cylinder arrangement control mechanism for the shielding tunneling machine, when a shield propelling system tunnels a compound stratum, the positions of the hydrauliccylinders can be changed at the right time, layout optimization is achieved, and thus the shield tunneling efficiency is improved.

The invention relates to a suspension type ground friction conveying line. An auxiliary track installing support is fixedly installed on the outer side of a main track installing column, a main track is fixed on the main track installing column and suspended above plant area ground, a straightening track is fixed on the auxiliary track installing support, walking wheels are arranged in the main track, every two adjacent walking wheels are connected through a connecting rod, a straightening wheel is arranged in the straightening track, the walking wheels and the straightening wheel are installed on a workpiece support, a driving friction wheel and a driven friction wheel are installed on the main track installing column, and the connecting rod is located between the driving friction wheel and the driven friction wheel. According to the suspension type ground friction conveying line, the total installing height is reduced, the problem that paint is sprayed on a conveying line body at a paint spraying station is avoided, maintenance and safety are enhanced, and an auxiliary walking track is installed additionally simultaneously to avoid an eccentric load.

The invention provides a boom system for a wheel type wet sprayer. The boom system for the wheel type wet sprayer comprises a rotary table arranged on a machine tool, and a boom device connected with the rotary table, wherein the rotary table is of a bilateral symmetry structure and comprises a rotary chassis, two vertical support plates and a horizontal support plate; a first through hole and a second through hole are respectively formed on the same height in the top parts of the vertical support plates; a third through hole is formed in the center of the horizontal support plate; the central points of the first through hole, the second through hole and the third through hole are located on the same vertical face; the tail end of a big arm and the rotary table are hinged at the first through hole and the second through hole; the front end of the big arm is hinged to the tail end of a small arm through two connecting rods; vertices of a quadrangle formed by one section of the front end of the big arm, one section of the tail end of the small arm and the two connecting rods are respectively located in a vertical face where the central axis of the big arm and the central axis of the small arm are jointly located. According to the boom system for the wheel type wet sprayer, the eccentric load phenomenon of all axle sleeves at hinged points is avoided, and the deformation of axle sleeve holes in the hinged points is controllable and uniform, so that the service life of a boom assembly and even the service life of the whole concrete wet spraying machine are improved.