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69 results about "Ground lift" patented technology

In sound recording and reproduction, ground lift or earth lift is a technique used to reduce or eliminate ground-related noise arising from ground loops in audio cables. It may also increase or decrease noise from other sources. Activating the ground lift on a particular piece of equipment opens the connection between the equipment ground and the shielding conductor of audio cables attached to the equipment, leaving those cables grounded only at their opposite end.

Method for testing fluid-producing section of horizontal pump well

The invention discloses a method for testing the fluid-production section of a horizontal pump well, which relates to the field of testing of fluid-producing sections of horizontal oil field wells. The method comprises the following steps of: connecting a long plunger hollow oil pump to the bottom of an oil pipe, feeding deep into the horizontal well by a design pump depth, and setting the long plunger hollow oil pump in a casing; synchronously feeding a continuous oil pipe and a logging cable deep into the lower part of a segment to be tested on the fluid-producing section of the horizontal well, pressing the ground where the continuous oil pipe is positioned to separate a releasing pipe nipple from the continuous oil pipe, and pulling the continuous oil pipe out; and connecting the upper end of the oil pipe with a reciprocating ground lifting device to perform reciprocating pumping actions, starting a fluid-producing section tester, pulling the logging cable slowly, and moving the fluid-producing section tester upwards for testing during production. According to the method, oil field No.5 casing well completion and fluid-producing section testing of the horizontal well by lifting with an oil sucking machine are realized; and meanwhile, the quantity of used equipment is small, the operation time is short, and the well testing cost is lowered.
Owner:CHINA PETROLEUM & CHEM CORP +1

Ground lifting projection screen

The invention discloses a ground lifting projection screen, which has the characteristics of simple structure, small volume and the like. The upper end of a curtain is taken up by a pull rod, and the lower end of the curtain is taken up with a winding pipe; a synchronous rod passes through the winding pipe, and the winding pipe is supported on the synchronous rod via a bearing; a torsion spring is arranged between the winding pipe and the synchronous rod so that the curtain is tensioned between the pull rod and the winding pipe; two T-shaped steering gear cases are symmetrically arranged at two ends of the synchronous rod; X-axes of the T-shaped steering gear cases are connected to the ends of the adjacent synchronous rod; each foldable support is formed by hinging at least two rods, the two foldable supports are symmetrically arranged on two sides of the curtain, a lower rod of each foldable support is connected with a Y-axis of each adjacent T-shaped steering gear case, and upper rods of the foldable supports are connected with the pull rod; limiting modules are arranged on two sides of the curtain and correlated with the adjacent foldable supports so that the foldable supports are kept at spread positions after the foldable supports rotate to extreme positions; and the X-axes and the Y-axes are perpendicular to each other spatially.
Owner:崔定楠

Geothermal development system and construction method thereof

The invention discloses a loose blasting type hot ore development system and a construction method thereof. The hot ore development system comprises a ground lifting system, a large-diameter verticalshaft, an underground high-temperature high-pressure heat exchange water tank, a heat exchange flow guide channel, a water-rock geothermal flow storage layer, a movable sealing device and the like, wherein the water-rock geothermal flow storage layer is formed by access blasting tunnels and a main tunnel. The hot ore development system is provided with an injection pipeline and a collecting pipeline along the inner wall of the large-diameter vertical shaft, the injection pipeline communicates with the collecting pipeline through the heat exchange flow guide channel of the underground high-temperature high-pressure heat exchange water tank in dry hot rock, the circulating main tunnel is arranged around the underground high-temperature high-pressure heat exchange water tank, and the plurality of rows of access blasting tunnels are horizontally arranged along the main tunnel, a hot ore blasting fracture flow storage layer is formed through caving mining method loose blasting, moreover, the movable sealing device is arranged above the vertical shaft of a blasting layer, through a U-shaped pipe principle, through the injection pipeline and the collecting pipeline, cold water and hot water in the high-temperature high-pressure water tank exchange heat energy, the water with the heat energy is conveyed to the ground to be converted into electric energy for people to use, and dual heat exchange is realized.
Owner:MECHSOFTTECHNOLOGY U S A CO LLC +2

Single-action arm ground lifting pole with flowing water counterweight system

ActiveCN104787690AReduce volumeFlexible counterweight change controlCranesStress conditionsLifting capacity
The invention provides a single-action arm ground lifting pole with a flowing water counterweight system, which comprises a lifting pole foundation, a jacking sleeve frame, a tower body, a rotary assembly and a lifting pole head that are arranged sequentially from the bottom up, wherein the rotary assembly is provided with a lifting arm and a balance arm. The lifting pole is characterized in that the rotary assembly and the balance arm are provided with the flowing water counterweight system; the flowing water counterweight system comprises hydraulic pushers, small water tanks and a counterweight water tank; the hydraulic pushers and the small water tanks are arranged on the rotary assembly; the counterweight water tank is arranged at the tail of the balance arm; and the small water tanks are connected with the counterweight water tank via water pipes. Compared with the prior art, the stress condition of the single-action arm ground lifting pole with the flowing water counterweight system can be improved, the lifting capacity of the lifting pole is improved, or the sectional dimension and weight of a pole body are decreased under the same lifting capacity, and the single-action arm ground lifting pole better meets erection requirements of an ultra-high voltage transmission line iron tower.
Owner:CHINA ELECTRIC POWER RES INST +2

Arm-type intelligent cutting and parallel tunneling-bolting integrated machine

The invention discloses an arm-type intelligent cutting and anchoring parallel integrated machine, which solves the difficulty in adjusting and positioning the body position of the boring machine in the prior art, and the coordinate reference system of automatic cutting is likely to change when positioning and automatic cutting It has automatic cutting of any section, does not need to adjust the orientation of the roadheader during cutting, and can realize the effect of intelligent cutting and digging parallel to the anchor; the technical solution is: including the base split and the cutting of the roadheader Split body, sensor system and numerical control system, the sensing system transmits the detected roadheader signal to the numerical control system to realize intelligent cutting; the cutting split body and the base split body are connected through a sliding device and a propulsion device; the cutting split body The front side and the rear side of the machine are respectively equipped with lifting devices; when the lifting device supports the ground to lift the cutting body and drives the base to hang in the air, the propulsion device drives the base body to move forward; when the lifting device retracts the base to the ground, the propulsion device pushes the cutting body The body moves forward and enters the knife for cutting.
Owner:翟明华 +2

High-pressure grouting lifting deformation monitor and installation method thereof

The invention discloses a high-pressure grouting lifting deformation monitor and an installation method thereof. The monitor comprises a reference pipe and a protective pipe; the bottom end of the reference pipe is connected with a sliding inner shaft, an inner anchor head is mounted on an inner anchor pipe, the bottom end of the protection pipe is connected to a sliding outer sleeve, the sliding outer sleeve sleeves the sliding inner shaft, and a sealing component is arranged between the sliding outer sleeve and the sliding inner shaft; an elastic rubber plug is embedded between the sliding inner shaft in the lower portion of the reference pipe and the sliding outer sleeve in the lower portion of the protective pipe in a sleeved manner; a ground lifting observation dial gauge is mounted at the top end of the reference pipe; and the reference pipe, the sliding inner shaft, the inner anchor pipe and the inner anchor head include hollow channels respectively, and the hollow channels are connected in series to form a grouting channel. The monitor and method can effectively prevent the protective pipe from consolidating with the reference pipe due to grouting leak in the high-pressure grouting process, sealing between the protection pipe and the reference pipe and free sliding performance during deformation are ensured, and the observation precision of the lifting deformation observing device is ensured.
Owner:POWERCHINA ZHONGNAN ENG

Ground lifting device for capsule body of tethered balloon

The invention discloses a ground lifting device for a capsule body of a tethered balloon. The ground lifting device is mainly composed of a soft bearing pad, an arched support, a slide rail, a fast stop pin and a fixed bracket. The ground lifting device is suitable for lifting the capsule body when the tethered balloon of 200 m3-12000 m3 is moored on the ground, the fixed bracket is mounted at the front end of a revolving platform of tethered balloon mooring equipment, the arched support is connected with the fixed bracket through a fixing shaft and the fast stop pin, and the arched support moves back and forth along a guide groove of the fixed bracket through the slide rail and can be locked at a designated position. The soft bearing pad is mounted on the top of a movable support and contacts with the capsule body of the ground tethered balloon, wearing of the capsule body is prevented, and a buffering effect is achieved. The arched support is turned by 90 degrees and locked through the guide groove in transport. According to the ground lifting device for the capsule body of the tethered balloon, operation is easy, when the tethered balloon moors on the ground, the capsule body is prevented from sinking, limiting is conducted, a gate-shaped structure design is adopted, and it is ensured that the arched support has sufficient rigidity to bear the sink force of the tethered balloon.
Owner:CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST

Antiskid folding type ground lifting machine suitable for car maintaining

The invention discloses an antiskid folding type ground lifting machine suitable for car maintaining. The antiskid folding type ground lifting machine comprises a base, a working platform, a right baffle, a left baffle, a folding rod set and a double-action hydraulic cylinder, wherein the right baffle and the left baffle are arranged at the two ends of the working platform correspondingly; and the folding rod set and the double-action hydraulic cylinder are arranged between the base and the working platform. The folding rod set comprises a first push rod, a second push rod, a third push rod, a forth push rod, a right hinge shaft and a left hinge shaft. One end of the first push rod and one end of the third push rod are hinged to the base. One end of the second push rod and one end of the fourth push rod are hinged to the working platform. A right piston rod of the hydraulic cylinder, the other end of the first push rod and the other end of the second push rod are connected in sequence through the right hinge shaft. A left piston rod of the hydraulic cylinder, the other end of the third push rod and the other end of the fourth push rod are connected in sequence through the left hinge shaft. The folding rod set and the double-action hydraulic cylinder are combined, so that the stability during ascending and descending of the lifting machine and the synchronization of the working platform are ensured.
Owner:CHENGDU IYASAKA TECH DEV

Steel cable type flight experiment table

The invention discloses a steel cable type flight experiment table and belongs to the technical field of plant protection unmanned aerial vehicles. The table comprises a frame body, a flying trolley,a clamp and a ground lifting platform. A friction winch is adopted for closed-loop traction, so through the flying trolley, rapid acceleration and deceleration can be achieved, the track length is shortened and the test section distance is ensured to the greatest degree. Meanwhile, a steel cable replaces the track, so that the structure is simplified. In addition, a ground lifting platform adoptsa hydraulic shear type lifting vehicle to be raised and descend, so the height of a to-be-tested target is adjustable through the lifting vehicle, the complexity of a connection clamp of the flying trolley can be greatly reduced, the structure of the flying trolley is further simplified, and the load of the flying trolley is effectively improved. The steel cable type flight experiment table provided by the invention is more suitable for the actual field operation condition, can simulate the actual operation environment, and can simulate the actual spraying effect under the conditions of simulating different flight heights, speeds and angles of a plant protection unmanned aerial vehicle outdoors.
Owner:JILIN ACAD OF AGRI MACHINERY

Novel flexible vehicle body assembly machine system

The invention discloses a novel flexible vehicle body assembly machine system, belongs to the technical field of armored vehicle manufacturing, and aims to solve the problems of long time consumption, low efficiency and high risk in vehicle body machining. The system comprises a carrying platform, a vehicle body assembly tool, an auxiliary device, a numerical control assembly machine and a cutting and welding robot, the carrying platform comprises a cast iron platform, a driving device and platform sliding wheel sets, the vehicle body assembly tool comprises a positioning tool. the positioning tool is used for fixing a vehicle body on the carrying platform, the auxiliary device comprises a semi-gantry crane bridge and a ground lifting appliance; the semi-gantry crane bridge is arranged at the end part of the carrying platform, the ground lifting appliance is arranged on the side of the carrying platform, the assembly control machine is arranged on the carrying platform, the assembly mechanism control system is used for controlling an assembly gripping apparatus to move on a linear sliding table, and the cutting and welding robot comprises a robot body, a robot control system and a truss system. The production efficiency is improved, the number of operators is reduced, the labor intensity is reduced, the flexibility degree is high, and efficient flexible production is achieved.
Owner:CHANGCHUN UNIV OF SCI & TECH

Intelligent Internet education system based on projection mapping

ActiveCN108735012ASave teachersElectrical appliancesHydraulic pumpEngineering
The invention relates to an intelligent Internet education system based on projection mapping. A projection mapping room is provided with an intercepting door body, a wall baffle telescopic channel, aground lifting channel, a ground baffle telescopic channel and a projection device telescopic channel, a telescopic device comprises a wall telescopic guide rail, a wall driving motor, a wall projection mapping baffle, a ground telescopic guide rail, a ground driving motor and a ground projection mapping baffle, a lifting device comprises a ground lifting hydraulic pump, a ground lifting hydraulic rod, a ground lifting platform and a table and chair telescopic passage, a projection mapping device comprises a projection hydraulic pump, a projection hydraulic rod, a teaching projection mappingdevice, a table and chair hydraulic pump, a table and chair hydraulic rod, a table and chair platform, a projection mapping table and a seat, a teacher acquisition device comprises a teacher projection mapping device and a teacher microphone, an identification device comprises a first camera, a second camera and a teaching speaker, a positioning device comprises a first positioning module and a second positioning module, a wireless device is located in the control center, and the control center is located at the planning location.
Owner:深圳市迩言教育科技有限公司
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