12results about How to "Eliminate play" patented technology

The present invention discloses a planetary gear reducer with a large-caliber hollow structure, which solves the problem that when the existing planetary gear reducer is applied to a robot, the robot's cables cannot be built-in, resulting in a large device volume, and the existing reducer has a large axial size and weak rigidity. The reducer uses an end cover to axially position the planetary wheel of the first-stage planetary gear reduction mechanism, the current-stage planetary carrier axially positions the planetary wheel bearing, and the upper-stage planetary carrier axially positions the first external tooth of the next-stage sun wheel. At the same time, the same-stage planetary wheel and the planetary carrier directly contact each other to achieve mutual axial positioning; the reducer realizes power input from one side and output from the other side through the cooperation between the hollow sleeve, the input gear and the sun wheel of the first-stage planetary gear reduction mechanism, and the internal cavity of the hollow sleeve, the central through hole of each stage sun wheel and the through hole set in the center of the planetary carrier are connected in sequence, thereby forming a hollow structure for passing the line.

The utility model relates to a bearing protection device of mechanical grading mill, including frame, two main motors are installed to both sides of frame, the output of two main motors installs grading wheel drive, grinding disc drive respectively, grinding disc drive and grading wheel drive connect hollow shaft and solid axle through V type belt respectively, solid axle is placed in hollow axle hole, grinding disc is installed on hollow axle, and is inside the cavity of grinding cavity, grading wheel is installed on solid axle, and is above grinding disc inside the cavity, the upper and lower end of hollow axle is provided with big bearing respectively, and is supported by big bearing, the upper and lower end of solid axle is provided with small bearing respectively, and is supported by small bearing, the outer ring of grinding disc is provided with toothed grinding ring, the cavity of grinding cavity is provided with air guide ring below, and air guide ring is below toothed grinding ring, compared with prior art, the utility model can improve the service life of bearing, reduce the wear and tear and failure risk of bearing, and further improve the effect of equipment grinding and grading.

This utility model provides a positioning fixture for laser welding of automotive crash barrier tubes, relating to the field of fixture technology. The positioning fixture for laser welding of automotive crash barrier tubes includes: a base for supporting the automotive crash barrier tube; end face clamping mechanisms, one at each end of the base, for clamping the ends of the automotive crash barrier tube; multiple side clamping mechanisms, multiple on the base, for clamping the front and rear sides of the automotive crash barrier tube; and multiple adjustable pressing mechanisms, multiple on the base, each including a pressure plate for pressing the upper surface of the automotive crash barrier tube, and the pressure plate can adjust its angle according to the inclination of the upper surface of the automotive crash barrier tube. This application achieves full-circumferential positioning through the coordinated use of the end face clamping mechanism and the side clamping mechanism, eliminating movement during the welding process. The adaptive design of the pressure plate is compatible with crash barrier tubes with different cross-sectional inclination angles, achieving uniform distribution of clamping force, avoiding deformation caused by local stress concentration, and improving the accuracy of the laser welding trajectory.

The utility model discloses a guide rail with elastic buckle locking mechanism, including outer slide rail and inner slide rail, and the inner slide rail is sleeved in the outer slide rail inside, is equipped with steel ball holder between the outer slide rail and the inner slide rail, and the outer slide rail includes oppositely arranged fixed slide frame and movable slide frame, and the fixed slide frame and movable slide frame are all U type structure, and the U type opening oppositely arranged, and the inner slide rail is two U type inner slide frames, and the two U type inner slide frame openings are outward, and are connected through buckle back to back, and the opposite arc-shaped recesses are respectively arranged on the opposite wings of the fixed slide frame, movable slide frame and inner slide frame, and the arc-shaped recesses are jointly matched and constitute the steel ball movement track, and the upper wing board front end of fixed slide frame is equipped with the limit protrusion, and the upper wing board of movable slide frame is detachably connected with the elastic buckle of extending to the top of fixed slide frame near the rear end, and the elastic buckle is matched with the limit protrusion and realizes that movable slide frame is locked. The utility model discloses the guide rail, and the bearing capacity is strong, and the performance structure is stable, and the operation is smooth and fluent, and the locking function is reliable, and the maintenance is convenient and fast.

The utility model relates to the field of robot wrists, in particular to a hollow robot wrist based on hypoid gears, which comprises an external shell and an internal transmission system. Specifically, the shell comprises a six-axis shell, a six-axis support, a wrist body connected with the six-axis support through a six-axis first screw, a five-axis support connected with the wrist body through a five-axis first screw, and a five-axis third gear connected with the six-axis shell through a five-axis second screw. The transmission system comprises a five-axis transmission system and a six-axis transmission system, through accurate calculation and selection of gaskets, the clearance between bearings is successfully eliminated, the stability and the accuracy of the transmission system are improved, the structure of the transmission system is simplified by using a quasi-double-gear transmission scheme, the number of parts and the assembly complexity are reduced, and the cost is reduced. And the system failure rate is reduced.

The application belongs to the technical field of manipulators, and discloses a feeding and discharging manipulator for wind power generator accessories and a working method thereof, wherein the manipulator comprises a five-axis mechanical arm, the end of the five-axis mechanical arm is fixedly provided with an upper loading plate, a middle loading plate is arranged below the upper loading plate, a plurality of elastic connecting columns are connected between the upper loading plate and the middle loading plate, a position detection mechanism is arranged on the outer wall of the upper loading plate and the middle loading plate, a bottom loading plate is arranged below the middle loading plate, and a rotary shifting structure for driving the bottom loading plate to rotate horizontally is arranged at the bottom end of the middle loading plate; a double-shaft holding mechanism for synchronously clamping or releasing two shaft pieces in the radial direction is arranged on the bottom surface of the bottom loading plate, shaft end vertical pressing structures are arranged at both sides of the inside of the bottom loading plate, and the shaft end vertical pressing structures are used for applying vertical pressing force to the two end positions of the shaft piece after the shaft piece is in place; the application cooperatively designs vertical active pressing and radial clamping operation, realizes rigid limiting of the shaft piece, and improves the limiting effect.

The invention relates to a method for focusing an optical sight (200; 500) to a sight mounting system (300; 400), comprising: a sight mounting interface (110; 410) and an elongated dovetail member (305), where the elongated dovetail member (305) is arranged to be forced against the inclined rear wall (125) of the sight mounting interface (110) and against the inclined rear wall (125) of the optical sight (200; 500) and an inclined rear surface (240; 540) of the reflective sight, where the inclined front surface (245; 545) is forced against an inclined front wall (135) of the sight mounting interface (110). A method for mounting to the sight mounting interface (110; 410) and an adapter plate for mounting the sight to the sight mounting interface.

The utility model relates to the field of motors, in particular to a bearing structure with a good anti-impact effect and a motor, the bearing structure comprises bearings, a rotating shaft and a fixed cylinder, the fixed cylinder sleeves the rotating shaft, the bearings are located between the fixed cylinder and the rotating shaft, the number of the bearings is at least two at intervals in the axial direction of the rotating shaft, and the fixed cylinder sleeves the rotating shaft. An inner gasket and an outer gasket are arranged between every two adjacent bearings, the two end faces of each inner gasket abut against inner rings of the corresponding two adjacent bearings respectively, the two end faces of each outer gasket abut against outer rings of the corresponding two adjacent bearings respectively, and first abutting assemblies used for abutting against the inner rings of the bearings from the two sides are arranged on the rotating shaft. A second abutting assembly used for abutting against the outer ring of the bearing from the two sides is arranged on the fixing cylinder. The motor has the advantages that the axial impact resistance of the motor is improved, and meanwhile the size of the motor is guaranteed.

The utility model discloses a modularized passive carrying mechanical auxiliary mechanism which comprises a trunk module, a left leg part and a right leg part, the left leg part and the right leg part are mirror images of each other and are fixed to the two sides of the trunk module, and the trunk module, the left leg part and the right leg part each comprise a plurality of rigid elements and elastic elements which are connected with each other. The rigid elements of the trunk module are connected through the elastic elements to form a bearing structure of the trunk module and used for reducing supporting loads borne by the upper body of a user, the trunk module obtains the freedom degree during movement through the elastic elements, and the rigid elements of the left leg part and the right leg part reduce and transmit the supporting loads under the action of the elastic elements; the trunk module comprises a binding wearing module and a back spine module, the binding wearing module is connected with the back spine module, the back spine module comprises spine sections and a base plate, and the base plate is attached to the back curve of the human body. Motion stress of hip joints, knee joints and ankle joints in the walking process is reduced, the swing period is shortened, and the ground load force transmission capacity is enhanced.

The invention belongs to the technical field of copper bar processing, and discloses multi-station continuous punch forming equipment for special-shaped copper strips, which comprises a main frame and a workbench mounted at the bottom end of the main frame, a main cylinder is mounted at the top of the main frame, and the output end of the main cylinder is connected with a top lifting frame. According to the invention, the passive guide die holder is forcibly driven to clamp inwards through physical extrusion, the structure directly converts the power of'die descending 'into the power of'lateral clamping', and ensures that the clamping force reaches the maximum value only at the moment that a punching head is about to contact with a workpiece, so that an independent clamping power source is omitted, the equipment structure is simplified, and the production cost is reduced. And the sequential logic of first clamping and second punching is guaranteed from the mechanical principle, the problem of copper strip movement caused by desynchrony is thoroughly solved, and therefore the position precision of special-shaped copper strip punching is effectively guaranteed, and the special-shaped copper strip punching device is particularly suitable for the flexible production requirements of multiple varieties and small batches.

The present invention relates to a linear drive unit, which comprises a first actuator element and a second actuator element, a guide unit, a first power unit and a second power unit, and a control unit, wherein the guide unit is configured to enable a linear relative motion between the two actuator elements; the first power unit and the second power unit are both attached to the first actuator element and are configured to provide a corresponding first driving force and a second driving force to the second actuator element; the control unit is used to control the two power units and is configured to control the first driving force and the second driving force so that the first driving force can be different from the second driving force. The present invention also relates to a telescope comprising a linear drive unit, and a method for aligning such a telescope.

The present invention belongs to the technical field of continuous casting and rolling, and relates to a green and energy-saving emergency shear, comprising a transmission device and an emergency shear body; the emergency shear body comprises a mounting frame, an upper drum and a lower drum, and the upper drum and the lower drum are both connected to the transmission device; the mounting frame is provided with a vertically extending slide groove, and the upper drum and the lower drum are both slidably arranged in the slide groove; the upper drum is connected with a downward pressure mechanism, and the lower drum is connected with a lifting mechanism, and a spring group is provided between the upper drum and the lower drum. The present invention sets the upper and lower drums to be movable, and drives the lifting of the upper and lower drums through the downward pressure mechanism and the lifting mechanism, so as to accelerate the upper and lower drums in the open position, and then approach to complete shearing after the acceleration is completed; at the same time, the shear blades of the upper and lower drums are set to multiple groups, so as to meet the requirement of completing multiple shearings by rotating one circle of the drum, thereby reducing the power of the motor.