62results about How to "Improve turning ability" patented technology

The invention relates to a high-flexibility three-DOF (Degree of Freedom) spatial parallel mechanism, belonging to the technical field of numerical control machines, and comprising a mobile platform, a fixed platform, a first branched chain, a second branched chain and a third branched chain, wherein the mobile and fixed platforms are provided with an actuator respectively; the first and second branched chains are connected between the mobile and fixed platforms and have the same structure; and the third branched chain is connected between the mobile and fixed platforms and has a structure different from the structure of the first second branched chains. The first, second and third branched chains all contain an actively-driving kinematic pair and are respectively connected with the fixed and mobile platforms to form a spatial parallel closed-loop mechanism. The spatial parallel closed-loop mechanism drives the mobile platform to move by three input motions to realize one mobile DOF and two rotational DOFs. The spatial parallel mechanism has high flexibility, specific rotational axis, relatively simple associated movement and other characteristics, and the operation precision and quality of the mechanism can be ensured more easily.

The invention provides a gas-powered soft-bodied crawling robot and a manufacturing and controlling method thereof. The gas-powered soft-bodied crawling robot comprises at least two inflation extension type actuators, a connecting ring and a contact hand, the at least two inflation extension type actuators are combined side by side through the connecting ring and the contact hand to form the gas-powered soft-bodied crawling robot. The gas-powered soft-bodied crawling robot is suitable for pipeline detection, the crawling efficiency in the current soft-bodied robot pipeline can be improved, the robot can be suitable for multiple types of pipelines, it is proved that the designed soft-bodied robot can freely crawl at the high speed in the pipeline, the influence of the self gravity can be overcome, the good steering capacity is achieved, the robot can adapt to complex pipelines, meanwhile, the designed soft-bodied robot is flexible, and good in flexibility, and through carrying of an endoscope camera, the pipeline detection task is finished.

The invention discloses a double-hinged-joint double-mode anti-explosion type inclined shaft full face rock tunnel boring machine comprising a cutter head tunneling mechanism, a shielding device and a driving device, wherein the cutter head tunneling mechanism is used for breaking rock, the shielding device comprises a front shield, a middle shield and a rear shield, wherein the front shield, the middle shield and the rear shield are connected in sequence, the driving device is installed on the front shield, connected with the cutter head tunneling mechanism and used for driving a cutter head to rotate, the front shield and the middle shield are actively hinged, and the middle shield and the rear shield are passively hinged. The front shield and the middle shield are actively hinged, and the middle shield and the rear shield are passively hinged, namely, the shielding device is of a double-hinged-joint structure, in this way, the double-hinged-joint double-mode anti-explosion type inclined shaft full face rock tunnel boring machine can be adapted to the working condition that in an inclined shaft tunnel, the radius of curvature of the joint between a transitional gradient and a slope is small, cornering ability is high, and complete-machine posture adjustment is convenient.

The invention relates to the technical field of petroleum equipment, and discloses a petroleum drilling rod outer surface cleaning device. The petroleum drilling rod outer surface cleaning device comprises a drilling rod body, the outer surface of the drilling rod body is provided with a first clamping ring in a sleeved manner, first motors are embedded on the upper side and the lower side of theleft side face of the first clamping ring, output shafts of the first motors are fixedly connected with rotating shafts through couplers, the ends, away from the first motors, of the rotating shafts are fixedly connected with rollers, the position, located on the left side of the first clamping ring, of the outer surface of the drilling rod body is sleeved with a second clamping ring, an annular sliding groove matched with the rollers is formed in the right side face of the second clamping ring, and the rollers are located in the annular sliding groove. According to the petroleum drilling rodouter surface cleaning device, removed dirt and iron rust can be collected, air pollution can be prevented, the whole device is high in transmission efficiency, slippage due to dirt and iron rust outside the drilling rod body can be avoided, and the capacity of the whole device for driving the petroleum drilling rod to move is higher.

A skate device that has one or more turnable wheels. In one group of embodiments, the turnable wheels may be linked such that when one wheel turns another wheel turns in a manner that facilitates turning. In another group of embodiments, the turnable wheels are not so linked. The skate device of the present invention may achieve turning from a point underneath the shoe or foot region of the skate, thus more closely approximately turning on ice skates. The skate device may have inline wheels and maybe relatively light-weight and compact.

A six-freedom-degree series-parallel domestic dynamic seat comprises an engine base, a middle platform, a movable platform, a seat body, a control hardware part and six branches. The seat body is arranged on the movable platform, and the control hardware part is arranged on the engine base. The three RPS branches are connected to the engine base and the middle platform, one end of the linear drive moving pair in the three RPS branches is connected with the engine base through a rotating pair, the other end of the linear drive moving pair is connected with the middle platform through a composite spherical hinge, and the two ends of the three branches are evenly distributed on the engine base and the middle platform in a circumferential mode; the three SPR branches are connected with the middle platform and the movable platform, one end of the linear drive moving pair in the three SRP branches is connected with the middle platform through a composite spherical hinge, the other end of the linear drive moving pair is connected with the movable platform through a rotating pair, and the two ends of the three SRP branches are evenly distributed on the middle platform and the movable platform in a circumferential mode. The six-freedom-degree series-parallel domestic dynamic seat is easy to operate, high in rigidity, small in occupied area and high in rotation capacity, working space is large, and actions are sensitive.

A folding kayak includes fore and aft subassemblies which are joined together and are covered by a water-impermeable skin to provide a watercraft with the favorable attributes both hard shell and skin on frame kayaks, with none of the disadvantages. In addition, one or more hydraulic adjustment mechanisms provide the kayak with characteristics of a plurality of different rigid body kayaks, with different operational characteristics, suitable for open-ocean or closed-water environments as desired. Ribs which are part of the kayak assembly have a relatively flat profile, making the kayak perform more favorably in adverse water conditions, and also giving the kayak some resilience and flexibility when encountering obstructions in the water. In one aspect, the kayak subassemblies may be joined, at least in part, by corrugated splines. By rotating these corrugated splines within elongate tubes that form part of the respective subassemblies, it is possible to remove crystalline, corrosive, and other build-up. The kayak may be disassembled into a relatively compact, easily transportable package.

The invention discloses a multi-dimensional moving disc type underwater glider and relates to the field of underwater gliders. The underwater glider is in a disc structure form. A main body structurecan move in all directions and has same hydrodynamic performance as a result of the symmetrical structures. A buoyancy adjusting device can adjust the size of net buoyance to generate a driving force,through which the underwater glider sinks and floats and the underwater glider suspends underwater. A linked adjusting device adjusts distribution of center of gravity of the underwater glider by linking a follow-up stable wing and a sliding mass block, so that the underwater glider glides stably along a direction and turns quickly. The underwater glider has a multi-dimensional moving ability inan underwater space and can meet the actual demand on investigation of a three-dimensional marine environment and the demand on long-term monitoring and data acquisition in a key area.

The invention discloses an independent steering type electromechanical composite transmission device for a crawler. The independent steering type electromechanical composite transmission device comprises four planet rows, four electromotors/generators and three operation elements. Input power is transmitted to a gear ring of one planet row through an idler straight gear, is transmitted by the electromechanical composite transmission device, then, is output through planet carries of other planet rows, and is finally transmitted to drive wheels on the two sides of a vehicle body through side transmission. The independent steering type electromechanical composite transmission device can realize shunt transmission of power in the range of normal vehicle speed, and can realize backflow of brake power from the inner side to the outer side at steering time.

The invention relates to the technical field of carbonate oil and gas field development, and provides a fracture network volumetric acid fracturing method of a carbonate reservoir. The fracture network volumetric acid fracturing method includes the following steps that a low-viscosity emulsion slippery water acid solution is injected into a carbonate oil and gas field well, and migration resistance of the low-viscosity emulsion slippery water acid solution near the wellbore area is lowered; the low-viscosity emulsion slippery water acid solution is injected into the carbonate oil and gas fieldwell, and fracture network volumetric acid fracturing modification is conducted on a dominant fracture channel near the perforation section; vegetable glue liquid is pumped into the carbonate oil andgas field well, and the steering process of low-viscosity emulsion slippery water acid solution is completed; the low-viscosity emulsion slippery water acid solution is continuously pumped into the carbonate oil and gas field well, and the fracture network volumetric acid fracturing modification process is completed; and displacement fluid is injected into the carbonate oil and gas field well, and the oil and gas production is tested. According to the fracture network volumetric acid fracturing method of the carbonate reservoir, the low-viscosity emulsion slippery water acid solution can lower the migration resistance of acid liquor in fractures near the well to the distance, and a long and complex fracture system is formed advantageously; and meanwhile, the vegetable glue liquid has thehigh steering ability and glue is prone to being broken by oxygen, the secondary damage of steering fluid to the reservoir can be reduced, and the purposes of carbonate acid fracturing well stimulation and stable production are achieved.

The invention discloses an ecological restoration treatment device for soil and an application method thereof. The ecological restoration treatment device comprises a traction mechanism used for traction, a spraying mechanism used for soil turning and spraying, an overturning mechanism and a transmission mechanism used for providing the overturning effect, wherein a power mechanism is installed onthe traction mechanism, a lifting mechanism is arranged on the lower side of the traction mechanism, the transmission mechanism is connected to the lifting mechanism, the spraying mechanism is installed on the transmission mechanism, and the overturning mechanism is arranged between the transmission mechanism and the spraying mechanism. According to the device, an overturning soil turning plate and a rotating rod are matched for overturning and rotating, so that the soil turning capacity can be improved, the liquid medicine spraying effect can be improved, the abrasion between equipment and machinery can be reduced, the efficiency can be improved, and the device can adapt to various soil conditions by utilizing the traction mechanism and a lifting adjusting mechanism of the lifting mechanism, so that the practicability of the device is improved.

A vehicle-mounted self-rescue crawler belt device comprises a lifting part, a guide rail, driving devices, a crawler belt fixing part and crawler belt wheel parts, the driving devices comprise the first driving device and the second driving device, the lifting part comprises a fixed saddle, a movable saddle and a transmission screw rod, and the fixed saddle is fixed to the lower portion of a vehicle frame and vertically arranged. One end of the transmission screw rod is connected with a transmission shaft of the first driving device through a guide rail, a first connecting part is arranged below the lifting part, a second connecting part is arranged above the crawler belt fixing part, the two connecting parts are connected in a matched mode to fix the crawler belt fixing part, and the crawler belt fixing part comprises a second driving device and a plurality of connecting through shafts. The crawler wheel part is connected with the crawler fixing part through a preset connecting through shaft, the second driving device is located on the outer side of the crawler fixing part, and a transmission shaft is rotationally connected with a driving wheel shaft on the crawler wheel part. The device has the advantages of being easy and convenient to operate and high in practicability.

The invention relates to a water plugging agent and a preparation method thereof. The water plugging agent comprises the following components in parts by weight: 100 to 120 parts of acrylamide, 60 to 100 parts of a strength monomer, 10 to 20 parts of a high-adhesion promoting monomer, 0.01 to 0.1 part of a micro-crosslinking agent, 1 to 4 parts of an associative thickener, 40 to 80 parts of a response monomer, 2 to 6 parts of an associative monomer, 0 to 27 parts of potassium hydroxide, 320 to 400 parts of water, 200 to 280 parts of an oily solvent, 20 to 40 parts of an emulsifier, 2 to 5 parts of a co-emulsifier, 1 to 5 parts of a polymerization stabilizer, 0.02 to 0.5 part of an initiator and 25 to 35 parts of a phase inversion agent. The water plugging agent disclosed by the invention is of a micro-crosslinking association network structure, mainly adopts intermolecular crosslinking, has dense grid holes, thick molecular chains, strong water molecule wrapping capacity, more stable gel and lower dehydration rate, can effectively reduce the permeability of a rock core, and has a good plugging effect.

The invention discloses a turnover telescopic arm on an electronic welding machine. The turnover telescopic arm comprises a motor, a first connection rod, a second connection rod, a rotary shaft, an adapter box, a cylinder, a connection plate and a telescopic clamp arm, wherein the first connection rod is connected to a main shaft of the motor; the other end of the first connection rod is hinged with the second connection rod; the rotary shaft is arranged at the other end of the second connection rod; the rotary shaft is connected with the adapter box; the adapter box is externally connected with the telescopic clamp arm; the adapter box drives the telescopic clamp arm to carry out horizontal and vertical turnover motions; the telescopic clamp arm comprises a telescopic arm and an arm bin; the telescopic arm is installed in the arm bin in a sleeving manner; the telescopic arm is connected with the cylinder through the connection plate; and the cylinder pushes the telescopic arm to carry out a relative telescopic motion relative to the arm bin.