10 results about "Cylindrical joint" patented technology

This utility model discloses a material conveying joint structure. The joint assembly includes a feeding joint and a discharging joint that are face-to-face connected. A feeding pipe is inserted into the feeding joint, and a first material cavity is provided inside the feeding joint, with the feeding pipe connected to the first material cavity. A discharging pipe is inserted into the discharging joint, and a second material cavity is provided inside the discharging joint, with the discharging pipe connected to the second material cavity. The feeding joint and the discharging joint can rotate relative to each other. During operation, the first material cavity and the second material cavity remain connected. The joint assembly of this utility model uses two cylindrical joints that are face-to-face connected, and the feeding pipe and the discharging pipe are inserted tangentially into the corresponding joints. The two joints can rotate relative to each other around the same axis. By rotating the joints, the relative angle between the feeding pipe and the discharging pipe can be adjusted to adapt to different loading and unloading heights, loading and unloading distances, etc. It has strong adaptability, is simple, convenient, and reliable to operate, and improves loading and unloading efficiency.

This invention discloses a cylindrical joint surface contact thermal resistance measuring device, comprising: a base (1), an upper cover plate (8), a heat-spreading ring (4) disposed between the base (1) and the upper cover plate (8), an inner test column (5) and an outer test column (6), a heating rod (3) disposed within the heat-spreading ring (4) and fixed to the base (1), the inner test column (5) being fitted onto the heat-spreading ring (4), and the outer test column (6) being fitted onto the inner test column (5), with an upper heat insulation layer (7) and a lower heat insulation layer (2) disposed between the heat-spreading ring (4), the inner test column (5), and the outer test column (6) and the upper cover plate (8) and the base (1). This invention further ensures the axial temperature consistency of the inner test column by utilizing the heat-spreading ring, and further accurately describes the temperature of the inner surface of the inner test column and the outer surface of the outer test column by utilizing thermocouples embedded in the inner cylindrical surface of the inner test column and attached to the outer cylindrical surface of the outer test column, thus homogenizing the measurement error.

This invention discloses a two-degree-of-freedom rotational parallel mechanism, a humanoid ankle joint, a robot, and its skeleton. The two-degree-of-freedom rotational parallel mechanism includes a fixed platform, a moving platform, a passive constraint branch containing a passive Hooke joint, and two identical RCU motion branches composed of a first revolute joint, a cylindrical joint, and a Hooke joint. The R-joints of the two branches are active inputs, and they satisfy the constraint condition of coincident rotation axes in spatial structure. Thanks to this structure, the proposed parallel mechanism can achieve a large range of end-effector attitude adjustment with a small axial displacement of the cylindrical joint. Power transmission is achieved through a cascaded four-bar linkage, further synthesizing into a novel and compact humanoid ankle joint as per this invention. The parallel mechanism provided by this invention has two rotational degrees of freedom, enabling pitch and roll movements around a fixed rotation center, and can be used in robots, attitude adjustment platforms, and other scenarios.

The invention relates to a high-strength light-weight robot flange which comprises a cylindrical execution connecting column provided with an execution connecting hole. The cylindrical joint connecting column is provided with a joint connecting hole; the execution connecting column and the joint connecting column are connected through a connecting part; the connecting part is tubular and is provided with a reinforcing part; the reinforcing part radially protrudes towards the outer side and extends to the two axial ends of the connecting part; one end of the reinforcing part radially extends towards the outer side to form a first connecting part which is connected with the execution connecting column; and the other end of the reinforcing part radially extends towards the inner side to form a second connecting part which is connected with the joint connecting column. According to the structure, unnecessary material redundancy in a traditional flange is avoided, the weight of the flange is remarkably reduced, and therefore the rotational inertia of the tail end of the six-axis robot is reduced, the bearing burden of the first five axes is relieved, and the dynamic response capacity and movement flexibility of the robot are improved.

The application discloses a clamping locking device and a centrifugal force loading mechanism, and the device comprises a centrifugal force transmission upper joint, a centrifugal force transmission lower joint and a connecting assembly; wherein the centrifugal force transmission upper joint and the centrifugal force transmission lower joint are respectively arranged as semi-cylindrical structure joints, and are oppositely arranged in a top-down symmetrical mode and fixedly connected by the connecting assembly to form an integral cylindrical joint; both ends of the centrifugal force transmission upper joint and the centrifugal force transmission lower joint are respectively provided with stepped grooves, so that after the centrifugal force transmission upper joint and the centrifugal force transmission lower joint are oppositely mounted, both ends form stepped cylindrical cavities, a centrifugal force loading force bearing joint is mounted in one end of the stepped cylindrical cavity, and a loading end of a centrifugal force actuator is mounted in the other end of the stepped cylindrical cavity. The technical scheme provided by the application successfully solves the problem that the force bearing in the centrifugal force loading structure is connected by threads and is often broken due to fatigue; the main force bearing and transmission rely on a stepped structure and a pin shaft, the thread connection link in loading is eliminated, and the risk of thread connection fatigue fracture is avoided; the application can be referred to for implementation and modification in the case of fracture of thread force bearing components in other load loading.

To suppress the loosening of nuts when nuts are provided, and to reduce the constraints on the material of the parts used to suppress that loosening. [Solution] The joint comprises a cylindrical joint body 20, a nut 22, an engaging projection holder 26, an engaging projection 28, and a slip-preventing body 30. The engaging projection 28 protrudes from the engaging projection holder 26 along the central axis 100 of the nut connection male thread 60 of the joint body 20. The nut 22 has a nut connection female thread 110 and at least one engaging recess 114. The engaging recess 114 is positioned opposite the engaging projection 28 when the nut connection female thread 110 engages with the nut connection male thread 60 of the joint body 20. The slip-preventing recess forming portion 68 of the joint body 20 forms a recess. The engaging projection holder 26 has a slip-preventing hole forming portion 172. The slip-preventing body 30 is positioned to penetrate the hole formed by the slip-preventing hole forming portion 172.

The application relates to a high-freedom connecting structure of a root canal irrigator and an irrigating method, and belongs to the technical field of root canal treatment equipment. The oscillating needle comprises a needle head, a ball joint and a connecting rod. The connecting rod of the oscillating needle is connected with a spherical groove of an eccentric wheel through the ball joint, and one degree of freedom is reserved. A soft rubber covering head cover is arranged at the top of a shell, and the oscillating needle is arranged in the soft rubber covering head cover through a cylindrical joint, a cylindrical pair is formed, and four degrees of freedom are reserved. Five degrees of freedom are reserved in total. The application has the advantages that the trajectory is self-adaptive, the needle head does not stop after being blocked, and the blocked needle head changes the trajectory adaptively. The high-freedom ball joint and cylindrical joint ensure the safety of the needle head, the oscillating needle is constrained by two connecting rods, has five degrees of freedom, and forms a high-freedom connecting structure at the soft rubber covering head cover. The motor torque is small, and the needle head cannot be stuck. The needle head cannot be broken, and the safety is high. The threaded structure of the needle head is convenient for smearing and throwing medicines.

This pipe joint is provided with: a cylindrical inner member, the inner peripheral surface of which is a contact surface that comes into contact with a fluid to be conveyed; a cylindrical joint member fitted into the outer periphery of the inner member and having a male screw portion on the outer periphery; and a union nut having a female threaded portion screwed into the male threaded portion on the inner periphery, the internal member being connected to a fluid device having a first thin portion in contact with the conveyed fluid, the internal member having an insulating ring-shaped second thin portion, and the second thin portion having a second thin portion in contact with the second thin portion. And a second thin portion having a thickness smaller than the thickness of the first thin portion from the contact surface toward the radially outer side, the pipe joint having a conductive portion that is provided on the joint member and that is in contact with the outer peripheral surface of the second thin portion.

An unconstrained master controller device (110) comprising a sensorized elongated body (10) comprising at least one tracking sensor (11) for detecting position and orientation of the master controller device; a handle (12); a cylindrical roll joint (13) between the handle (12) and the sensorized elongated body (10), said cylindrical joint being suitable to allow relative rotation between the sensorized elongated body and the handle at least about a roll rotation axis (R); and a sensorized control interface (14), mounted to the sensorized elongated body (10) to actuate rotation of the sensorized elongated body (10) about the roll rotation axis (R).

A shaft assembly includes a shaft, a gear assembly having a first gearwheel and a second gearwheel locked in rotation relative to each other. The shaft assembly includes a first cylindrical joint, with a first cylindrical section, integral to the shaft, and a first central opening, integral to the first gearwheel, the first gearwheel being mounted on the shaft via the first central opening, a second cylindrical joint, comprising a second cylindrical section, integral to the shaft, and a second central opening, the second gearwheel being mounted on the shaft via the second central opening, and a spline joint, comprising a first part, integral to the shaft, and a second part, integral to the gear assembly, engaged with the first part so that the first gearwheel and the second gearwheel are locked in rotation with the shaft.