8results about How to "Compact and simplified structure" patented technology

The invention provides a motor rotor shaft pre-tightening structure and a motor. The motor rotor shaft pre-tightening structure comprises a stator, a rotor shaft and a bearing. The stator is provided with a shaft hole, the first end of the rotor shaft is inserted into the stator inner cavity from the shaft hole, and the bearing is fixed on the rotor shaft and located in the stator inner cavity; the bearing and the rotor shaft divide the inner cavity of the stator into a closed compression cavity, the second end of the rotor shaft is provided with a communication groove part, one end of the communication groove part is communicated with the outer side of the stator, and the other end is communicated with the closed compression cavity; when the rotor shaft rotates, air on the outer side of the stator can be driven to enter the closed compression cavity along the communicating groove part, and due to the fact that the closed compression cavity is not provided with an outlet and only provided with an inlet in the communicating groove part, the rotor shaft continuously drives the air to enter the closed compression cavity in the rotating process, so that high-pressure air is formed in the closed compression cavity; the pressure directions of the high-pressure air acting on the rotor shaft and the stator are opposite, so that pretightening force between the rotor shaft and the stator is formed, and the stator and the rotor shaft can stably and reliably operate.

The application discloses a methanol supply system and a power device. In the methanol supply system, a first conveying pipeline is used for conveying methanol liquid to a waste heat utilization mechanism, the waste heat utilization mechanism is connected with a cooling water output end and an exhaust gas output end of an engine, double waste heat is cooperatively recovered, the pure methanol liquid is preheated by using the waste heat of the cooling water, and is gasified into pure methanol gas, the pure methanol gas is cracked to generate hydrogen by using the waste heat of the exhaust gas in a reformer, a hydrogen-rich gas is formed, and the hydrogen-rich gas is conveyed to the engine through a second conveying pipeline, external energy is not consumed additionally, fuel loss is greatly reduced, the structure is simple and compact, reliability and adaptability are greatly improved, and overall combustion efficiency is improved.

The utility model discloses a feeding and discharging mechanism for a winding machine, which comprises a mounting seat and a rotary driving unit for driving the mounting seat to rotate and reverse, and a feeding clamping unit and a discharging clamping unit are arranged on the mounting seat at an interval; wherein the rotary driving unit drives the mounting seat to rotate, so that the feeding clamping unit and the discharging clamping unit synchronously execute feeding and discharging actions; the feeding and discharging mechanism is simplified and compact in structure, low in manufacturing cost, small in installation space, stable in operation and good in use performance.

The utility model discloses a clamping jaw device, and relates to the technical field of mechanical equipment. The device specifically comprises a first rodless cylinder; the first end of the sliding block mounting plate is connected to a sliding block of the first rodless air cylinder, and the sliding block mounting plate ascends and descends along with the first rodless air cylinder; the horizontal fixing plate is connected to the second end of the sliding block mounting plate; the two clamping assemblies are connected to the two sides of the horizontal fixing plate correspondingly, and the two clamping assemblies can get close to each other or get away from each other in the length direction of the horizontal fixing plate so as to clamp an object to be clamped; and the second rodless air cylinder and the first rodless air cylinder are arranged in parallel, the first end of the sliding block mounting plate is connected to the second rodless air cylinder, and when the first rodless air cylinder descends, the second rodless air cylinder and the first rodless air cylinder move oppositely so as to reduce the descending speed of the first rodless air cylinder. Stable operation of the clamping jaw device is guaranteed while space occupied by an air cylinder is shortened.

An oil injection control system for a diesel engine comprises a multi-oil injection pump, an oil pumping mechanism, a driving mechanism and an oil supply amount adjusting mechanism, the oil pumping mechanism and the driving mechanism are arranged in a pump body, and the oil supply amount adjusting mechanism is arranged on the pump body; the oil pumping mechanism comprises a plunger which is driven by the oil supply amount adjusting mechanism to rotate, and a spiral line capable of adjusting the oil supply amount is arranged on the plunger. The driving mechanism comprises a hydraulic driving unit capable of driving the plunger to do linear reciprocating motion in the axial direction of the pump body. The oil injection pump device has the advantages that the oil injection pump device is simple in structure and easy to implement, the production and manufacturing cost can be greatly reduced, and the cost performance of a whole machine product is higher; the product is wider in application range and high in practicability; the control precision and strength are effectively improved, and the reliability and safety of products are guaranteed.

The low-pressure gas balloon sealing head comprises a sealing balloon, an inflation assembly, a connecting assembly and a guiding assembly, the sealing balloon is composed of a balloon front pressing plate, a balloon body and a balloon rear pressing plate, the inflation assembly is composed of an inflation pipe, a ball valve, a pressure gauge, a connecting wire head A, a connecting wire head B and a connecting pipe, the connecting assembly is composed of a sealing device connecting sleeve, a vertical plate, a rotating pin shaft and a supporting plate, and the guiding assembly is composed of two guiding plates, a rotating shaft and a guiding pulley.The balloon sealing head adopts high-elasticity material, the surface of the balloon body is provided with a plurality of annular sealing protrusions, the sealing effect is enhanced to ensure that the balloon body is closely combined with the inner wall of the pipeline, different deformation conditions are adapted, the structure is compact and simplified, installation and dismounting are more convenient, the operation time is greatly shortened, a pressure monitoring assembly is installed at the same time, the sealing effect is monitored in real time, gas leakage is effectively prevented, and operation safety is improved.

This invention proposes an activated carbon wet desulfurization device, belonging to the field of wet desulfurization technology. It solves the problems of high operating costs, easy scaling, and difficult byproduct disposal in traditional wet desulfurization devices. The device comprises a box-type structure, including a shell with a horizontally arranged dividing wall plate inside, dividing the interior into upper and lower regions. The lower region is the primary desulfurization zone, and the upper region is the secondary desulfurization zone. An inlet pipe is inserted into the inlet pipe interface. A primary activated carbon assembly is installed in the primary desulfurization zone, located above the inlet pipe. A primary hanger is installed at the lower part of the dividing wall plate, connected to a primary spray pipe. A secondary activated carbon assembly is installed in the secondary desulfurization zone. A secondary hanger is installed on the inner wall of the top of the shell, connected to a secondary spray pipe. An outlet pipe is located at the top of the shell, communicating with the secondary desulfurization zone. It is mainly used for activated carbon wet desulfurization of acidic gases.

The utility model discloses a hot shoe connecting structure and a flash lamp, and belongs to the technical field of camera accessories, a rotating shaft is rotatably arranged on a connecting part, a rotating shaft upper cover is arranged at the upper end of the rotating shaft, an angle limiting part is arranged on the rotating shaft upper cover, a thrust spring is arranged between the rotating shaft and the connecting part, and the angle limiting part is arranged on the rotating shaft upper cover. A rotation limiting part and a horizontal movement limiting part are arranged on the rotating shaft, and a plug board is arranged at the lower end of the rotating shaft. The connection structure is stable and reliable in connection, pre-compression is formed between the plug board and the connecting part through the jacking effect of the thrust spring on the rotating shaft, the plug board is tightly attached to the hot shoe, the problems of loosening, shaking and poor contact caused by matching tolerance are avoided, and the connection stability is improved. A second elastic piece of the rotation limiting part and a third elastic piece of the horizontal movement limiting part are matched with the hot shoe limiting groove, the support is further locked from the two dimensions of rotation and horizontal movement, and accidental slippage is prevented.