42results about How to "Unlimited height" patented technology

The invention relates to a press key structure comprising a sliding element, a press key cap, a scissor type connecting element and a connecting structure. The press key cap is connected to the scissor type connecting element, and the connecting structure is connected to the scissor type connecting element and the sliding element. When a user wants to operate the press key structure, linked operation of the sliding element and the connecting structure can be controlled, the press key cap is enabled to be at a high position, and good pressing hand touch can be provided for the user. Via the press key structure, linked operation of the sliding element and the connecting structure can be used to lower height of the press key cap, and therefore the press key structure is enabled to have a thin shape.

The invention discloses a mobile bulk material unloading machine, which belongs to the unloading machine, and its structure includes an overturning platform and a wheel stopper. The overturning platform is embedded in the chassis of a special semi-trailer. The lower part of the rear side of the chassis is provided with moving wheels, the left and right sides of the front end of the special semi-trailer chassis are respectively provided with front outriggers, the left and right sides of the middle part are respectively provided with middle outriggers, and the left and right sides of the rear end are respectively provided with rear outriggers. The front part of the chassis of the semi-trailer is equipped with a folding ladder, and the front side of the bottom of the chassis of the special semi-trailer is provided with an inclined surface. The angle between the inclined surface and the horizontal plane is ≤5°. A hydraulic system is provided on the trailer chassis. The invention has the characteristics of being able to drive like a car, automatically unloading a truck loaded with bulk materials;

The invention relates to a pipe-bundle-builtin isothermal-shift reactor. According to the pipe-bundle-builtin isothermal-shift reactor, axial annular pipe bundles, which are builtin and are uniformly distributed in a catalyst bed layer along circumferential direction, are adopted to shift out heat of reaction, so as to realize isothermal shift; and a central pipe bundle which is built in a central pipe is adopted to preheat raw material gas entering the reactor, so as to realize the builtin of a gas-gas heat exchanger. The isothermal-shift reactor comprises a pressure-bearing shell, a catalyst basket, the axial annular pipe bundles, the central pipe and the central pipe bundle; and the axial annular pipe bundles consist of upper and lower annular pipe boxes, upper and lower annular pipe sheets and heat exchange tubes. According to the pipe-bundle-builtin isothermal-shift reactor, due to builtin pipe bundles, the manufacturing cost of equipment is effectively reduced; due to an end-part bent structure for the heat exchange tubes, the size of the pipe sheets is effectively reduced; due to a heat insulating layer laid between the pipe sheets and the high-temperature catalyst bed layer, the contact between pipe end weld spots and a bed layer high-temperature area is effectively isolated, the probability of leakage is lowered, and the reliability of equipment is improved; and the pipe-bundle-builtin isothermal-shift reactor is compact in structure, low in manufacturing cost, relatively easy in maintenance, high in reliability, complete in function and high in applicability.

The invention discloses an automatic control device for passive farmland irrigation. The automatic control device mainly comprises a water storage tank, a pressure boosting mechanism, a valve flap, a floating ball guide mechanism and a buffer supporting part, wherein the buffer supporting part comprises a buffer plate and a pair of supporting columns installed on the buffer plate; each supporting column consists of a threaded connection screw rod in a threaded sleeve; the top end of each screw rod is provided with a supporting block or a supporting ball which supports the water storage tank; the water storage tank is of a fully-sealed structure, and is formed by connecting a water storage tank bottom plate and a water storage tank shell. The automatic control device has the advantages that the lifting of a floating ball in the floating ball guide mechanism is controlled by using the depth of a water layer in a farmland, so that the action of the valve flap in the water storage tank is further driven to realize water supply or discharge; when the valve flap is closed, the floating ball is used for guiding, and finally, the valve is closed by using water pressure; under the demand of shallow water supply, good sealing can still be realized; moreover, whole or independent height adjustment can be implemented in combination with the height of the floating ball of the floating ball guide mechanism, so that the depth of water level can be freely adjusted within the scope of 1-7cm to meet the demands of different-depth water supply.

The invention discloses a double-row electric vehicle with a telescopic cargo hopper. The double-row electric vehicle is characterized in that an accommodating cavity with a backward opening is formed in the bottom of a rear seat; the telescopic cargo hopper is arranged between a vehicle rear tail protection plate and the accommodating cavity, and comprises a bottom box plate and side box plates; the bottom box plate can be inserted into the accommodating cavity in a matched way; the side box plates are a front side box plate and a rear side box plate which are connected through a middle hinge; the front end of the front side box plate is connected with a vehicle body through a front hinge; the rear end of the rear side box plate is connected with the vehicle rear tail protection plate through a rear hinge. The double-row electric vehicle is simple in structure and low in production cost; the cargo hopper capable of being hidden and unfolded is arranged at the tail part of the vehicle body, so that the appearance of the complete vehicle cannot be influenced, the need of temporary cargo transportation can be met, and the comprehensive utilization value of double purposes of carrying passengers and transporting cargos in the absence of a trunk is realized.

The invention discloses a corrugated board slotting machine. The corrugated board slotting machine comprises a device body. The feeding end of the device body is sequentially provided with a feeding sliding roller A, a feeding sliding roller B and a feeding belt. The feeding belt is arranged between feeding paper supporting platforms and arranged on a feeding drive roller and a feeding driven roller. One end of the feeding drive roller is connected with a feeding motor. A feeding front paper baffle is arranged above the feeding paper supporting platforms. The output end of the feeding belt is sequentially provided with a height measuring drive roller and a rear drive roller. The height measuring drive roller is provided with a height measuring press roller, and a rear pressing roller is arranged on the rear drive roller. An end face slotting lifting plate, a middle slotting upgrading plate A, a middle slotting upgrading plate B, a middle slotting upgrading plate C and a trimming lifting plate are arranged at the output end of the rear drive roller in parallel.

The invention discloses a robot unstacking system and method based on a laser ranging radar positioning guide. The system and method solve the problems of the limited working scope and stacking heightlimitation of an unstacking robot in the prior art, and have beneficial effects of improving the running efficiency of the whole system and being applied to many occasions. According to the scheme: the robot unstacking system based on the laser ranging radar positioning guide comprises a lifting mechanism, a conveying robot and a control unit, wherein the lifting mechanism drives a distance measuring part to reciprocate in the vertical plane to achieve the movement of the distance measuring part in the vertical direction and to achieve the accurate positioning of the set position in a stacking area, and the lifting mechanism is located at the stacking diagonal extension cord at one side of the stacking area; the conveying robot comprises tongs for griping stacks, and is located at one side of the stacking area and spaced from the lifting mechanism by a set distance; the control unit is separately and electrically connected with the lifting mechanism, the distance measuring part and the conveying robot, wherein the distance measuring part scans layer by layer until objects are detected.

The invention relates to a beam-reserving open pit mining technology in a narrow mining area. The beam-reserving open pit mining technology comprises the following steps that a, mining areas are divided, an open-pit mining right realm is divided into the multiple long-strip-shaped mining areas, the position of a mining pit is divided in each mining area, and soil beams are reserved between every two adjacent mining pits as well as between the mining pits and the mining right realm; b, excavation equipment is used to conduct mining on the first batch of mining areas, and mining is conducted according to the preset positions of the mining pits; c, mining is conducted on coal, mined from the first batch of mining areas, under the soil beams on the peripheries of the mining pits by using a slope coal cutter; and d, mining is conducted on the second batch of mining areas, mining is conducted according to the preset positions of the mining pits, and the mining pits are subjected to downwardmining through a spiral linear adit mode. The mining method is suitable for all open-pit mines, revolutionary changes can be generated on open-pit mining, and the mining technology further greatly reduces the open-pit mining cost while improving the adaptability of open-pit coal mine mining.

The invention discloses an ultra-filtration device for rural domestic wastewater, which belongs to the field of sewage treatment (C02F) and mainly solves the problems of high energy consumption, inconvenience in operation management, easy blocking of a filter membrane, rapid reduction of a flux and short operational cycle in a conventional tubular ultra-filtration device. The ultra-filtration device for rural domestic wastewater comprises an ultra-filtration system and a compressed-air power system. An external power is provided for the ultra-filtration device by using a hydraulic device principle to achieve the 'labor-saving' effect; a compressed-air porous diffuser device is designed; as the filter membrane is delayed to strip by using radial high pressure fine airflow and uniform high pressure fine airflow, a membrane flux is improved and an operational cycle of the ultra-filtration device is effectively prolonged. The ultra-filtration device has the advantages of low energy consumption, long operational cycle, low investment and operational costs, convenience in operational management and efficiency in treatment, is especially suitable for centralized treatment of the low-medium concentration rural domestic wastewater subject to pretreatment of an anaerobic tank and has a very high removal rate for COD (Chemical Oxygen Demand), BOD5 (Biochemical Oxygen Demand), NH3-N, SS (suspended solids) and turbidity.

The invention relates to an article display cabinet, which includes a cabinet body. A horizontal displacement device and an article clamping device are arranged inside the cabinet body. The horizontal displacement device is arranged behind the inside of the cabinet body. There are several rows of article placement devices in the front of the cabinet, and a removal port and an entry port are provided on one side of the cabinet. The invention can realize the automatic depositing and taking out of articles.