44results about How to "Adjust displacement" patented technology

The invention relates to a method for reinforcing an existing municipal pipe gallery within a deep foundation pit excavation range, and is particularly applied to the condition of excavating a large-sized foundation pit when a municipal pipe gallery exists in a thick alluvial formation. The method comprises the following steps: constructing ordinary precast piles and pipe gallery reinforcement precast piles, wherein reserved connection devices are arranged on the pipe gallery reinforcement precast piles; excavating a foundation pit soil body from top to bottom until the reserved connection devices on the pile bodies are exposed; simultaneously pouring a pipe gallery support structure taking a soil model as a template below the pipe gallery and beams on two sides of the pipe gallery by taking the reserved connection devices of the pipe gallery reinforcement precast piles as support points; constructing anchor ropes, wherein one end of each anchor rope is anchored onto the corresponding beam, and the other end of each anchor rope is connected with a top beam on the corresponding pipe gallery reinforcement precast pile; continuing excavating the residual foundation pit soil body to a baseline of the foundation pit, constructing air duct structures, and integrally pouring waist beams of the foundation pit and air duct top plates to finish the construction. According to the method, the stability of the soil body around air ducts during the excavation of the air ducts is ensured, and the influence of excavation of the soil body on the lower part on the pipe gallery is reduced, and the pipe gallery is supported in advance.

The invention discloses an axial piston variable pump with four oil ports and low-noise parallel distribution structure. The pump comprises a shell, a front cover, a rear cover, a main shaft, a swash plate cradle, a set plate, a cylinder block, a valve plate, pistons, sliding shoes, a bearing, a variable control mechanism, etc. The cylinder block of the pump is provided with ten piston holes divided into two groups, and each group includes five piston holes located on different reference circles respectively; the pistons are fit to the piston holes of the cylinder block; the center of the cylinder block is provided with a spline hole, and the main shaft penetrates through the cylinder block, and is fit to the spline hole; a friction pair is formed by the distribution end surface of the cylinder block and the valve plate, and another friction pair is formed by the sliding shoes of the pistons in the piston holes of the cylinder block and the swash plate cradle; the upper distribution plane of the rear cover is in static connection with the corresponding end surface of the valve plate; the valve plate adopts a window structure of inner and outer ring distribution, and oil absorption and discharge distribution windows are of parallel double-ring structures which are symmetrical by taking the connecting line passing a top dead center and a bottom dead center as an axis; the rear cover is provided with four oil ports which are independent respectively; and the piston pump has different working modes through combining the four oil ports.

The cantilever crane type concrete transmission pump consists of chassis, pumping system and distributing rods. It features the chassis, which is made by Nissan Isuzu Co., Ltd., reaches to European's II exhaust standard and has highest running speed of 90 km/hr for fast reaching the site; the distributing rods in two section arm double cylinder support structure and with load sensing technology adopted; and the hydraulic pumping system operating in double pump cocurrent technology. The present invention has high distributing rod stability, high hydraulic pump rotation speed and no air sucking trouble.

The invention relates to a powder feeding device and a using method thereof and belongs to the technical field of laser cladding. The powder feeding device comprises a fixing part and a powder feeding nozzle, wherein a regulation device is arranged between the fixing part and the powder feeding nozzle and is composed of a horizontal regulation part and a vertical regulation part; and the vertical regulation part is arranged in the horizontal regulation part. The powder feeding device is capable of regulating the distance between a powder outlet and the surface of a substrate, has the characteristics of high regulation accuracy, convenience and rapidness in operation, strong practicability and high economic benefit and is beneficial to improving the effective availability of cladding powder and the cladding quality.

The invention belongs to the technical field of epoxy resin films, and particularly relates to an epoxy resin, film which is prepared from the following raw materials in parts by weight: 40-60 parts of E44 epoxy resin, 30-50 parts of hydrogenated butadiene-acrylonitrile rubber, 3-5 parts of inorganic mixed filler, 6-10 parts of phospholipid molecule solution, 2.5-5 parts of curing agent and 6.5-7-10 parts of polyvinyl chloride paste resin. The preparation method includes following steps: adding a mixture of E44 epoxy resin, hydrogenated butadiene-acrylonitrile rubber, a curing agent and polyvinyl chloride paste resin into an acetone solution to obtain a blended solution; and adding a phospholipid molecule solution and an inorganic mixed filler into the blended solution to obtain a uniformly dispersed solution. A roller rotates back and forth to drive the two ends of the flattening tank body to move upwards and sink intermittently through the pull ropes, and then an epoxy resin solutioncan be uniformly and efficiently spread in the flattening tank body to reach a self-leveling state; a vibration exciter is arranged at the bottom of the flattening tank body, wherein the vibration exciter enables the bottom of the flattening tank body to be in a vibration state, so that the epoxy resin solution is more uniformly spread.

The invention relates to an adjustable constant-shooting-speed rock breaking sprayer which comprises a shell and a spraying pipe, a pressure bearing part is formed at one end of the spraying pipe, the other end of the spraying pipe is provided with a spraying opening communicated with the interior of the spraying pipe, and the spraying pipe is arranged in the shell in a sliding mode. A plurality of drainage holes are formed in the shell; when the flow of the liquid entering the shell in unit time is equal to or smaller than the preset jet flow, the jet pipe blocks each drainage hole, and the liquid entering the shell flows through the jet pipe and is jetted out from the jet orifice; when the flow of the liquid entering the shell in unit time is larger than the preset jet flow, the liquid entering the shell pushes the jet pipe to slide in the direction away from the first opening end, at least part of the drainage holes recover to be communicated with the shell, and part of the liquid in the shell is discharged out of the drainage holes. The injection flow of the injection port to the liquid is equal to the preset injection flow. The technical problem that a nozzle used for jet flow rock breaking cannot provide stable jet speed is solved.

The invention discloses a driving device and a displacement transmitting component. The displacement transmitting component comprises a seat body, a thruster, an elastic piece and an actuator. Specifically, an actuating channel is arranged inside the seat body, the thruster is arranged at a first end inside the actuating channel, a part of the thruster stretches out of the actuating channel, the elastic piece is respectively connected with the thruster and the seat body, the elastic piece has force which often pushes the thruster to move towards the inner portion of the actuating channel, the actuator is arranged inside the actuating channel, and the actuator is contacted with the thruster. According to the displacement transmitting component, the amount of displacement which the thruster transmits to a mirror body can be adjusted quickly and accurately, and precision and rapidity of the displacement transmitting component are improved.

The invention relates to the field of robots, in particular to a mining robot omni-directional detection mechanical arm. The mining robot omni-directional detection mechanical arm comprises a fixing mechanism, a steering mechanism, an extension mechanism and a detection mechanism. Through the clamping effect between a convex cake groove in an adapter sleeve ring and an anti-falling circular plate at one end of a rotating main shaft, it can be guaranteed that the displacement of a rotating main shaft can be adjusted through the driving force of a pneumatic cylinder, meanwhile, angle adjustment of the rotating main shaft is not affected, the anti-falling circular plate at the front end of the rotating main shaft can rotate in the convex cake groove, and the adapter sleeve ring does not rotate along with the rotating main shaft; the position of an inner sleeve sliding rod is controlled through the connection state between a synchronous sleeve and a synchronous bevel gear, and then the length of the extension mechanism is controlled, so that the detection range of the mechanical arm is controlled; when the inner sleeve sliding rod contracts, the mechanical arm is small in overall size, direction adjustment is facilitated, and the detection range is large; and when the inner sleeve sliding rod extends, the detection depth of the mechanical arm is large, detection can be conducted more accurately, and meanwhile the mechanical arm can extend to a narrow space for detection.

The invention belongs to the field of plunger type motor pumps and specifically discloses a double-swashplate plunger pump. The plunger pump comprises a cylinder, a plunger, a first swashplate component and a second swashplate component and is characterized in that the first swashplate component and the second swashplate component are symmetrically arranged on two end faces of the cylinder, a displacement regulating mechanism is connected to at least one swashplate and comprises a connecting rod component, a piston type hydraulic cylinder and a control valve, the swashplate, the connecting rodcomponent and the piston type hydraulic cylinder are sequentially connected, and the piston type hydraulic cylinder is connected with the control valve. The double-swashplate plunger pump has the advantages that the movement of each piston type hydraulic cylinder is controlled through the corresponding control valve so as to drive the corresponding connecting rod component to move, the connectingrod component drives the corresponding swashplate to move to change the dip angle of the swashplate so as to change the displacement of the plunger pump, flow distribution of the plunger pump is achieved through a flow distribution device, stepless displacement regulation is achieved, and high regulation precision and wide regulation range are achieved.

The invention relates to a stool seat motion controller with a plurality of electric push rods and a motion control algorithm. According to the invention, particularly, the precise speed and displacement of the electric push rods can be controlled in a multidimensional mode so as to adjust the height and inclination of the stool seat. The stool seat motion controller with three or four electric push rods comprises a power supply module for supplying power to the entire system; an electric push rod system, in which the three or four electric push rods provide support and assistance for the seat; and a control system controlling the coordinated movement and feedback processing of the three or four electric push rods and precisely controlling the speed and position of the push rods according to input of operation by a user. According to the invention, shortcomings that existing stool seats can not perform multi-dimensional precise movement are overcome; the movement of the stool seat is stable; the control is precise; the structure is simple; and a better experience effect is brought for the user.

The invention discloses a multi-stage pulp proportioning device for processing and producing molded pulp tableware, relates to the technical field of pulp processing, and solves the problems that: currently used pulp proportioning devices are not provided with a quantitative adjustment structure convenient for rapid adjustment, and cannot rapidly adjust the displacement of a mold according to the capacity of the mold. The multi-stage pulp proportioning device for processing and producing molded pulp tableware comprises: a base, wherein a transmission belt is rotationally arranged at the top of the base through a stand column; and a loading mold, wherein rotating shafts are fixedly arranged on the two sides of the loading mold, and the rotating shafts are rotationally arranged on the top of the transmission belt. By arranging a nut sliding block, a function of rapidly adjusting the displacement of the mold according to the capacity requirement of the mold is provided for the pulp proportioning device; a worm gear drives a worm rod to rotate through transmission; a lead screw drives the nut sliding block to move through thread transmission; the movable range of an outer shaft is further adjusted; and meanwhile, the movement amplitude of a piston rod is adjusted, and the quantification of the pulp proportioning is adjusted.

The invention provides a discharger for automatically adjusting displacement, which includes a casing, a liquid level float, a piston group, a discharge hole group and a filter screen, the piston group is arranged on the liquid level float, and the liquid level float is arranged on the casing Inside, the discharge hole group is set at the lower part of the liquid level float, the filter screen is set at the upper part of the discharge hole group, and the liquid level float is located inside the filter screen. The beneficial effect of the present invention is that due to the adoption of the above technical scheme, when the condensed water is discharged, the discharge can be automatically adjusted according to the change of the displacement of the condensed water, so as to ensure neither leakage of steam nor storage of water; A fixed piston group and a moving piston group are arranged on the top, and the upper and lower positions are adjusted according to the principle that the gravity of the liquid level float in the liquid is balanced with the buoyancy received, so that the piston and the discharge hole can be in close contact or separated, and then discharge, so that the discharge The device can adjust the displacement.

The invention relates to afracturingslickwater and fracturing fluid online continuous mixing device, which comprises a base, the top end of the base is fixedly connected with a roots pump, the other side of the roots pump is fixedly connected with a leading-in pipe, the other end of the leading-in pipe is fixedly connected with a storage tank, a feeding mechanism is installed in the storage tank,two bearing plates are arranged in the feeding mechanism, and the two bearing plates are connected with the two sides of the storage tank in a welded mode correspondingly. According to the device, mother liquor can be stored through the storage tank, a hydraulic telescopic rod can drive a cover plate to move up and down to block or expose the open end of the storage tank, the mother liquid can beadded through the opening end of the storage tank, after liquid adding is completed, the opening end is blocked, so that dust and impurities can be prevented from entering the storage tank to pollutethe mother liquid and cause blockage of the device, and through a second motor, a stirring paddle can be driven to rotate to stir the mother liquor in the storage tank, and the situation that the mother liquor is precipitated and solidified can be prevented.

The invention provides an Internet of Things intelligent fire-fighting inspection system and method, a fire-fighting aerial ladder is carried on a fire-fighting truck, a clamping mechanism is fixed at the tail end of the fire-fighting aerial ladder, and an inspection device is clamped by the clamping mechanism; the inspection device comprises a hemispherical base and a sliding rod fixed to the upper portion of the base, a first screw rod is arranged in the sliding rod, the bottom of the first screw rod is rotationally connected with the base through a bearing, and a gap is reserved between the sliding rod and the first screw rod. When the third air cylinder or the fourth air cylinder is independently subjected to air exhaust or air injection operation, the inclination angle of the base can be adjusted; when the third inflator and the fourth inflator are simultaneously exhausted, the inclination direction of the base and the displacement of the base can be adjusted through the first motor; and when air is injected into the third air cylinder and the fourth air cylinder at the same time, the height of the camera on the sliding rod can be adjusted through the first motor, and the protective cover can be cleaned.

The invention discloses a rotary anti-swing control method of mobile hoisting equipment. The rotary anti-swing control method comprises the following steps that S1, a simplified mechanical model of amobile port crane is established; S2, according to the Lagrange equation, kinetic analysis is conducted on swing of the hoisting load, and a kinetic equation of heavy object motion is deduced; S3, thedisplacement of a lazy arm and the swing angle of the hoisting load are calculated according to the kinetic equation of the lazy arm and the hoisting load; and S4, a numerical value of driving torqueis optimized through a PID controller, and the hoisting load rapidly reaching a designated position and anti-swing control over the lazy arm are achieved. According to the dynamic analysis and anti-swing control based on the PID mobile hoisting equipment, when the lazy arm does rotary motion, the hoisting load can run more stably, and swing is eliminated rapidly after the hoisting load reaches the designated position.