5results about How to "Large adjustment stroke" patented technology

This utility model discloses a high-temperature acid gas venturi scrubbing tower for acidification kilns, belonging to the technical field of acidification kiln scrubbing towers, mainly used for scrubbing high-temperature acid gas discharged from acidification kilns. The technical problem to be solved by this utility model is to provide a high-temperature acid gas venturi scrubbing tower for acidification kilns, including a tower body connected to the tail gas pipe and a gas-liquid separation device of the acidification kiln. A throat pipe is provided inside the tower body, and a throat pipe adjusting device is provided at the bottom of the tower body. The throat pipe adjusting device includes a cylinder with one end penetrating through the tower body and extending into the tower body. A mounting platform with a sealed connection to the tower body is provided around the circumference of the cylinder body. A linear transmission mechanism is provided inside the cylinder body, and an adjusting rod is fixedly connected to the movable end of the linear transmission mechanism to drive the adjusting rod to move up and down along the length of the cylinder body. The adjusting rod is provided with an adjusting plug for controlling the size of the throat pipe opening. By driving the adjusting rod through the linear transmission mechanism, the adjusting stroke of the adjusting rod is increased, the adjusting range is expanded, high-temperature acidic dust-laden gas is treated in a timely manner, and the jetting phenomenon at the outlet tail gas hood is reduced.

The application relates to the technical field of vacuum instrument equipment, in particular to a sample bearing device and a scanning electron microscope. The sample bearing device comprises a sample table with a first axis, a first driving mechanism connected with the sample table, a second driving mechanism used for driving the first driving mechanism to reciprocate in a second direction, a third driving mechanism connected with the second driving mechanism, the third driving mechanism being used for driving the second driving mechanism to rotate, a fourth driving mechanism used for driving the third driving mechanism to reciprocate in a first direction, and a fifth driving mechanism used for driving the fourth driving mechanism to reciprocate in a third direction. The sample bearing device provided by the application can adjust the position of the sample table in five dimensions respectively, thereby adjusting the posture of the sample in the sample bin, each adjusting dimension has a larger adjusting stroke, and higher motion precision can be realized, so that the sample morphology can be reconstructed in three dimensions.

This invention discloses an electric chair for the elderly, comprising a base frame, a seat cushion assembly, a backrest frame, a footrest assembly, and a drive assembly. The seat cushion assembly is located above the base frame. The backrest frame and footrest assembly are respectively located on the rear and front sides of the seat cushion assembly. It also includes an anti-rotation device, which comprises a gear plate, a locking block, and an elastic element. The base frame, from top to bottom, includes a transverse support member, a central column, and a ground support member. The gear plate is fitted around the outer periphery of the central column. The locking block has a notch, and the elastic element is fitted around the upper end of the locking block. The locking block passes through the transverse support member. The seat cushion assembly has a pressing member that presses against the locking block when the chair is in a reclining or sitting position, causing the gear plate to be positioned relative to the locking block at the notch. This structure effectively improves the overall stability and safety of use in the raised state while enabling smooth switching between various postures, and enhances the comfort experience for the elderly when getting up and resting.

The application discloses an electric adjusting tube column motor and an electric adjusting tube column system. The electric adjusting tube column motor comprises a motor shell and a telescopic mechanism, the telescopic mechanism comprises a fixed end, an output end and an intermediate end. The fixed end is fixedly connected with the motor shell. The output end can drive a steering tube column to perform linear motion so as to adjust the length of the steering tube column. The intermediate end can be driven to drive the output end to move. The electric adjusting tube column motor disclosed by the application can adjust the length of the steering tube column in a space-saving manner.

The present application belongs to the technical field of surface finishing, and particularly relates to a multi-contact-wheel active cooperative regulation and control abrasive belt grinding device for complex curved surface parts, which comprises a support structure and a grinding execution mechanism; the grinding execution mechanism comprises a driving motor, a driving wheel, an abrasive belt, an electric push rod, a force sensor mounting flange, a force sensor a, an intermediate contact wheel frame fixing piece, an intermediate contact wheel frame, a force sensor b, an intermediate contact wheel seat, a contact wheel, a transition wheel, a transition wheel support frame, left and right contact wheel frames, a guide wheel assembly, left and right guide rails, an auxiliary wheel, an auxiliary wheel support, a tensioning wheel and a tensioning wheel support frame. The present application is mainly used for surface finishing of complex curved surface parts, can autonomously change the relative positions of the contact wheel groups according to the changes of the part surface curvature, and the two coaxially arranged force sensors can measure the grinding forces of different contact wheels in real time, so as to ensure the effective fitting of the multi-contact-wheel system and the curved surface, and improve the surface quality and grinding efficiency.