9results about How to "Simple working principle" patented technology

The utility model provides a kind of concrete slab joint sweeper, including support, joint sweeping mechanism and walking wheel, support includes frame body and handrail, joint sweeping mechanism includes driving device and joint sweeping brush, joint sweeping brush is arranged in the center of frame body front end bottom, driving device is arranged on the upper portion of frame body, walking wheel is arranged in the center of frame body rear end bottom, the utility model guarantees the accuracy of joint sweeper, construction quality is better, efficiency is higher, economy is more optimal, convenient time-saving.

The invention relates to the technical field of rana nigromaculata slaughtering, in particular to a rana nigromaculata slaughtering machine. Comprising a rack, and a supporting plate, a rolling belt, a blade, a viscera removing piece, a conveying belt, a push rod, a pneumatic clamping jaw, a head removing blade and the like are arranged above the rack; the lower portion of the supporting plate is driven by a rolling motor, so that the rolling belts on the two sides rotate at the same rotating speed. The rana nigromaculata is clamped by the rolling belts on the two sides and conveyed along a straight line, belly opening and viscera removing operation is sequentially completed, then the rana nigromaculata is conveyed to the baffle through the conveying belt to be subjected to peeling and head removing, the rana nigromaculata is pushed out through the push rod after peeling and head removing are completed, and continuous slaughtering of the next rana nigromaculata is achieved circularly. The device has the advantages of short time consumption, high efficiency, low labor cost, small operation difficulty, small occupied area, simple structure, high automation degree and the like, can meet the large-scale slaughtering requirements of rana nigromaculata, and has a good application prospect.

This utility model relates to the field of forklift technology and discloses an assembly and positioning fixture for a forklift tail carriage assembly. It includes a base, on which a slit positioning assembly is fixed. The slit positioning assembly includes a positioning bracket and horizontally arranged, mutually perpendicular transverse slit positioning blocks and longitudinal slit positioning blocks. The end of the transverse slit positioning block furthest from the positioning bracket is an abutment end, used to abut against the side plate of the tail carriage assembly. The end of the longitudinal slit positioning block furthest from the positioning bracket is also an abutment end, abutting against the front or rear plate of the tail carriage assembly. A steering axle positioning assembly is fixed to one side of the base. The steering axle positioning assembly includes a steering axle positioning bracket and a positioning pin. The axis of the positioning pin is collinear with the axis of the steering axle mounting hole on the tail carriage assembly. This utility model, through the coordinated operation of the slit positioning assembly and the steering axle positioning assembly, quickly and accurately positions and fixes the various plates of the tail carriage assembly, ensuring the coaxiality of the slit dimensions and the steering axle mounting holes.

The application provides a heat recovery method and device of a pyrolysis rotary furnace, and the heat recovery method comprises pyrolysis gas flow condensation: high-temperature pyrolysis gas flows out from a pyrolysis furnace, enters a high-temperature condenser after slag removal, is cooled by a light working medium, high-boiling-point pyrolysis oil components are condensed out, are collected and discharged into a high-boiling-point oil tank for storage, and meanwhile, medium-temperature pyrolysis gas is obtained; working medium circulation: the light working medium absorbs the heat of the high-temperature pyrolysis gas in the high-temperature condenser, evaporates water vapor and becomes a concentrated working medium which is discharged from the lower part of the condenser and returned to a medium absorber, during which, the concentrated and light liquid heat exchanger is used to transfer the heat of the working medium to the light working medium of the high-temperature condenser; the application of the mature technology is a derivative application of the absorption heat pump technology, the working principle is simple, the system route is safe, and the operation is stable.

This utility model relates to the field of mechanical rust prevention technology and discloses a mechanical rust prevention device with rust inhibitor flow rate regulation, which solves the problems mentioned in the background art. It includes a storage tank with a filling port at the top and a flow rate regulation mechanism connected to the bottom via a pipe; the flow rate regulation mechanism includes a throttle valve and a connecting ring, the connecting ring being threaded to the valve core of the throttle valve and connected to a manual handle; a spray head connected to the flow rate regulation mechanism; and a workpiece positioning device connected to the flow rate regulation mechanism. This utility model has a simple and intuitive working principle, is easy to operate, and is suitable for various environments, especially those without power or in flammable environments.

The embodiment of the invention provides a checking device for the working state of an airborne electromagnetic valve, and relates to the technical field of airborne electromagnetic valve detection.The checking device comprises a normally-open magnetic control switch 1, a power module 10 and a prompting device; wherein the positive electrode of the power supply module 10 is connected with the positive electrode of the prompting device, the negative electrode of the prompting device is connected with one end of the normally-open magnetic control switch 1, and the other end of the normally-open magnetic control switch 1 is connected with the negative electrode of the power supply module 10; when the airborne electromagnetic valve to be tested is in a working state, the normally-open magnetic control switch 1 senses a magnetic field generated by the airborne electromagnetic valve, so that the normally-open magnetic control switch 1 is closed, a circuit is formed between the normally-open magnetic control switch 1 and the power supply module 10, and the prompting device is triggered to work to send out a prompting signal. According to the scheme, the working state of the airborne electromagnetic valve can be quickly and accurately judged.

The utility model relates to a kind of fast-mounting type hoisting boom for fork truck, including fork carriage and the additional rack fixed on fork carriage, two oppositely arranged main arms are installed on the additional rack, the main arm is inverted L-shaped hollow structure, front support beam is fixedly connected between the horizontal section of two main arms, middle beam is fixedly connected on the front support beam, the hanger plate is installed in the lower end of the middle beam, the horizontal section upper end of the main arm is fixedly connected with lifting lug, frame steel pipe is fixedly connected between the vertical section of two main arms.The utility model can be hoisting boom accessory fast-mounting quick-change, improve the overall use efficiency of fork truck, meet the demand of market to fork truck diversification operation, and improve hoisting stability by double-hoisting-point design.

The application provides a magneto-electric water turbine rotating speed measuring system and a measuring method, and the system comprises an alternating magnetic field generating module, an electromotive force generating module and a frequency measuring module; the alternating magnetic field generating module is arranged on a water turbine main shaft and is used for generating an alternating magnetic field when rotating with the water turbine main shaft; the electromotive force generating module is arranged in the alternating magnetic field generated by the alternating magnetic field generating module and is used for generating an electromotive force according to the alternating magnetic field; and the frequency measuring module is connected with the electromotive force generating module and is used for determining the rotating speed of the water turbine according to the electromotive force. The technical scheme provided by the application can measure the frequency of the unit at a low rotating speed, thereby improving the reliability of the water turbine rotating speed measurement, and the working principle is simple and the equipment structure is compact.

The application provides a mechanical hand clamp changing tool, which comprises a bottom plate, a vertical plate fixedly connected with the bottom plate, a clamp locking device arranged on a first side of the vertical plate and fixedly connected with the bottom plate, a clamp toe changing device arranged on a second side of the vertical plate and fixedly connected with the bottom plate, a clamp changing device fixedly connected on the surface of the second side of the vertical plate, a mechanical hand sleeve fixing seat dismounting device and a clamp positioning device. The scheme has the advantages of simple structure, simple working principle, increased maintenance space for personnel in the maintenance process, reduced radiation dose of workers in the maintenance process, greatly improved work efficiency, realized continuous and stable operation of the mechanical hand in the radioactive environment and ensured stable operation of the main process system.