10results about How to "Easy to control direction" patented technology

The invention provides a method and system for determining the track of a ground reverse inclined shaft of a steeply inclined seam, and relates to the technical field of steeply inclined seam mining and ground drilling engineering. A wellbore trajectory design basic model is established based on coal seam boundary elevation, coal seam inclination angle, effective thickness and roof mechanical parameters; constructing a rectangular plane coordinate system on the top plate side of the goaf to obtain a space coupling relation between a shaft track and a rock stratum structure; smooth transition of a wellbore track is achieved through segmented arrangement of a vertical well section, a deflecting section and a reverse inclining section; determining a rock stratum movement line and calculating an included angle by combining ground surface movement monitoring, and delimiting a safety protection zone between the rock stratum movement line and a roof fracturing target layer; and finally, a trajectory equation of each well section is established with the safety protection zone, the rock stratum movement line intersection point and the rock stratum movement influence boundary as constraints, and a reverse inclined shaft trajectory meeting the requirements for interference avoidance safety and fractured layer coverage precision is obtained.

The utility model discloses a speed changer of toy car, including speed changer body and drive arrangement, speed changer body includes driving rod, conversion subassembly, first gear train subassembly and second gear train subassembly, first gear train subassembly, conversion subassembly and second gear train subassembly are sequentially inserted on driving rod, the output of drive arrangement is connected with the input of driving rod, wherein, when first gear train subassembly is connected with conversion subassembly, driving rod drives first gear train subassembly to rotate, and first gear train subassembly is connected first output through first drive link, and speed changer is in acceleration state, when second gear train subassembly is connected with conversion subassembly, driving rod drives second gear train subassembly to rotate, and second gear train subassembly is connected second output through second drive link, and speed changer is in deceleration state. Children observe the rotation and switching process of gear intuitively in playing. Cultivate their interest in science and technology in the form of play.

The invention is suitable for the field of medical instruments, and provides a four-way synchronous retractor and an operation method thereof.The four-way synchronous retractor comprises a rotating mechanism, traction mechanisms and a driving mechanism, by arranging the rotating mechanism, the traction mechanisms and the driving mechanism, when an upper disc in the rotating mechanism rotates relative to a lower disc, the upper disc rotates to drive teeth to be in meshing transmission with a circular fluted disc, and the teeth are driven to be meshed with the circular fluted disc; the multiple forceps are driven to rotate synchronously, traction operation is conducted on tissue around a wound from multiple directions, the operation view is expanded, the coordination and synchronism of actions of all traction mechanisms are guaranteed, meanwhile, the force and direction for retracting the tissue are easier to control, a surgeon can conduct operation conveniently, and the operation efficiency is improved. The problems that a common retractor used in open type operations such as the abdomen and the pelvic cavity can only conduct traction in the horizontal or vertical direction, deformation is caused by tissue pulling in other directions, a wound area is invaded, and the size of an operation incision is affected are solved.

This invention belongs to the technical field of phase change heat transfer elements, specifically relating to a device and method for removing segmented mandrels. The invention includes a hydraulic motor, a winch, steel wire, a special clamp, a support platform, a baffle, and a worktable. The winch is mounted on the worktable, and the hydraulic motor is connected to the winch via a coupling. Steel wire is wound on the winch, with one end connected to one end of the special clamp, and the other end of the special clamp connected to the segmented mandrel. The upper surface of the support platform has a V-groove, and the workpiece containing the four-segmented mandrel is placed in and fixed within the V-groove of the support platform. A baffle is provided at the end of the support platform near the segmented mandrel. This invention provides a stable and powerful axial pulling force through a hydraulic system, and utilizes a special clamp and a step-by-step blocking mechanism to achieve reliable clamping and sequential, individual pulling of the segmented mandrel, solving the problems of difficult, inefficient, and easily damaged manual removal, thus improving the manufacturing quality and production efficiency of phase change heat transfer elements.

The utility model discloses an air energy water heater with a descaling device, and relates to the technical field of air energy water heaters. The device comprises a box body, one side of the box body is fixedly connected with a descaling device, the descaling device comprises an upper three-way ball valve and a lower three-way ball valve, an operating rod is arranged between the upper three-way ball valve and the lower three-way ball valve, one side of the upper three-way ball valve and one side of the lower three-way ball valve are fixedly connected with a water inlet pipe, and the other side of the upper three-way ball valve and one side of the lower three-way ball valve are fixedly connected with a water outlet pipe. According to the water heater, the water inlet pipe, the connector, the upper three-way ball valve and the lower three-way ball valve are arranged, a user can easily control the path and the direction of water flow by operating the two ball valves, cleaning of different areas in the water heater is achieved, cleaning steps are simplified, and the cleaning effect is improved. Therefore, the flushing effect can be effectively improved, and great convenience is brought to users.

This utility model discloses a photovoltaic folding and retracting device for a hybrid energy storage power station, relating to the field of photovoltaic energy storage technology. It includes a trailer with wheels at the bottom and guide wheels at the front. A control cabinet is fixedly mounted on the top of the trailer, and an inclined bracket is fixed to the top of the control cabinet. A photovoltaic panel retracting and retracting device is fixed to the top of the bracket, and a photovoltaic panel is mounted on the top of the device. A lampshade is installed in a mounting groove, secured to the lampshade by a clamping foot at the bottom. Waterproof sealant is injected into the groove through the glue-filling seam. The purpose of this utility model is to design a photovoltaic folding device that is small in size, easy to operate, has neat wiring, an attractive appearance, and strong adaptability, providing customers with an energy-saving and safe power supply environment.

The invention relates to the technical field of rehabilitation auxiliary devices, and discloses an ankle joint auxiliary movement robot which comprises a base frame, a supporting plate is arranged above the base frame, a placing frame for placing the ankle joint part of a patient is arranged above the supporting plate, a placing groove is formed in the placing frame, a rotating mechanism is arranged below the supporting plate, and the rotating mechanism is arranged below the supporting plate. A rotating mechanism is fixedly installed on the base frame, the flexibility of the ankle joint part of a patient can be improved through the rotating mechanism, a side plate is fixedly installed on the side edge of the base frame, a fluctuating mechanism is arranged in the side plate, and the fluctuating mechanism can make a containing frame move up and down in a reciprocating mode. Through cooperation of a connecting pin column, a rack column, a third rotating gear disc and other components, the containing frame can be twisted left and right in a reciprocating mode, the rotating angle of the third rotating gear disc is small, small-angle rotation can be achieved, and the flexibility of the ankle joint of the patient can be effectively exercised.

The utility model discloses equipment for screening mixed ore raw materials, which comprises a screening box, a magnetic separation component is connected outside the screening box, and the key points of the technical scheme are as follows: an electromagnet is arranged, and whether a power line is electrified or not is controlled by a PLC (Programmable Logic Controller), so that the electrification of the electromagnet is controlled; the electromagnets attract magnetic ore contained in unscreened ore in the screening box to the electromagnets, then the first servo motor is used for finally driving the two electromagnets to rotate towards the outer side, then the electromagnets are powered off, and then the magnetic ore on the electromagnets can be taken down. The non-magnetic ore is firstly subjected to granularity distinguishing and screening, and then the magnetic ore is subjected to granularity screening, so that different types of ore with the same granularity can be conveniently classified in the later stage; the screening device is used for solving the problem that ore raw materials with different granularities are difficult to screen after magnetic metal and non-magnetic metal are distinguished by a screening device in a comparative patent.

The utility model discloses a cage trolley handle and an article transfer device. The cage trolley handle comprises a handle part, a pull rod and a pull ring structure, the handle part is used for being held by a user, the pull rod extends in the first direction, the pull ring structure comprises an arc-shaped fixing hook part, one end of the pull rod is connected with the handle part, and the other end of the pull rod is connected with the fixing hook part. And the fixed hooking piece can be hooked into the through hole or the protruding structure of the cage trolley in the second direction, so that the fixed hooking piece and part of the structure of the cage trolley can be limited in the first direction. The pull ring structure of the cage trolley handle can be hooked into the through hole or the protruding structure of the cage trolley, limiting can be formed in the first direction, when a user holds the handle piece and pulls the cage trolley in the extending direction of the pull rod, the pull ring structure is not prone to being separated from the cage trolley, the cage trolley handle is used for pulling the cage trolley, use is convenient, and the use effect is good. And the direction of the cage trolley is convenient to control. In addition, the cage trolley handle is simple in structure and can be quickly assembled and disassembled with the cage trolley.

The utility model discloses an electrostatic spinning device for preparing nanofibers. The electrostatic spinning device comprises a motor; the spinning nozzle is connected with a power supply so as to generate an electric field which is uniformly distributed on the surface, the spinning nozzle is used for spraying a spinning solution so as to form nanofibers, and the spinning nozzle is connected to the motor so as to be driven by the motor to rotate; the curved tops of the two curved-top cylinders are oppositely arranged, and the two curved-top cylinders are used for generating a magnetic field; the spherical magnet receiving device is arranged between the two curved-top cylinders, suspends and rotates under the action of a magnetic field, and is used for receiving nanofibers; the electromagnets are arranged on the two opposite sides of the spherical magnet receiving device, and the magnetic field directions of the electromagnets are opposite; a magnetic field formed by the electromagnet acts on the nanofibers to enable the nanofibers to be in a certain orientation, and the spherical magnet receiving device can change the orientation of the nanofibers through rotation. According to the utility model, the spinning fibers can be highly oriented under the action of magnetic field force.