44results about How to "Guaranteed rotational flexibility" patented technology

The invention relates to the field of outdoor electronic display screens, in particular to an adjustable steering outdoor electronic display screen. According to the technical scheme, the adjustable steering outdoor electronic display screen comprises a base, wherein a connecting seat is fixed on the base; a trough body is arranged on the connecting seat; a support rod is arranged in the trough body of the connecting seat in a sleeving manner; a driving mechanism for driving the support rod to rotate is mounted on the base; and a display screen main body is fixed at the other end of the support rod. The invention provides the adjustable steering outdoor electronic display screen to solve the problem that the existing outdoor electronic display screen cannot be adjusted or steer.

The invention discloses an anti-drop mechanism and belongs to the technical field of petroleum drilling equipment. The anti-drop mechanism comprises a check block and further comprises a lock-up block. The lock-up block is connected with the check block in a lock-up mode. The lock-up block comprises a lock hook part and a force bearing part. The check block comprises a lock-up part and an anti-drop part. The lock-up part is located in a lifting lug upper notch. The anti-drop part is located in a lifting lug hole. The check block makes pendulum-type movement and swings clockwise to be locked with the lock hook part of the lock-up block, and accordingly the lock hook part is in a pressed state; and the check block swings anticlockwise to be unlocked with the lock-up block, and accordingly the lock hook part is in an uplift state. The check block is connected with the lock-up block in a lock-up mode, so that locking is reliable, and the stability of the check block is greatly guaranteed. Due to the fact that the lock-up block is located in the lifting lug upper notch, the lock-up block is not exposed on the outer side of an elevator, so that wrong touching of the lock-up block can be effectively avoided, safe reliability in the operation process is greatly improved, and the safety accident is avoided.

The invention discloses a motorcycle steering column installation structure. The steering column is installed in the head tube, and is supported by the upper and lower steering bearings and the head tube, and sealing sheets are arranged at the ports at the upper and lower ends of the head tube. . The sealing sheet is composed of a metal sheet and a rubber sheet, the metal sheet and the rubber sheet are ring structures, and the axis lines of the two are on the same straight line; the outer edge of the metal sheet is embedded in the inner ring of the rubber sheet, and the rubber sheet The outer ring of the sheet is integrally formed with two lips, wherein the first lip is embedded in the head tube and abuts against the inner wall of the head tube, and the second lip is pressed against the end wall of the head tube. In the present invention, by adding a sealing sheet at the port of the head tube, the inside of the head tube is completely isolated from the outside, effectively preventing dust, rainwater, etc. , simple structure, convenient installation, good reliability and other characteristics, it can be used on various types of motorcycles.

The invention relates to the technical field of valve equipment, in particular to a pneumatic wear-resistant ceramic rotary slag discharge valve, which includes a pneumatic mechanism, an outer rocker arm, a rotating shaft assembly, a rotating shaft sleeve, an upper valve body, an inner rocker arm, a spring seat, a valve plate and a lower valve body. The valve body, the upper valve body and the lower valve body are fixed and sealed, the pneumatic mechanism is connected with the outer rocker arm, the outer rocker arm is connected with the inner rocker arm through the rotating shaft assembly, and the inner rocker arm is connected with the valve plate through the spring seat; the rotating shaft The assembly includes a rotating shaft, the upper end of which is fixedly connected to the outer rocker arm, the rotating shaft is arranged in the rotating shaft sleeve, and the rotating shaft sleeve is arranged on the upper valve body; the lower end of the rotating shaft is fixedly connected to one end of the inner rocker arm; the other end of the inner rocker arm It is fixedly connected with the spring seat, and the bottom of the spring seat is provided with a mold spring, and the valve plate is connected with the spring seat through the mold spring. The invention has reasonable structure, wear resistance, high heat resistance, and long service life. Power plant, metallurgy, medicine, chemical industry and other dust and particle conveying systems.

The invention discloses a disengagement prevention and single suspension ring prevention lifting system, and belongs to the field of oil drilling equipment. The system comprises a disengagement prevention component, the disengagement prevention component comprises a stop block and a lock block, the stop block is in locked connection with the lock block, a sensing component is arranged on the stop block, and a trigger block is arranged on the inner wall of a lower notch; the system further comprises a single suspension prevention component and a disengagement prevention mechanism, the single suspension prevention component comprises a controller, the controller is in wireless electric connection with the sensing component, the disengagement prevention mechanism comprises a locking block and a baffle block, the locking block is in locking connection with the baffle block, the locking block comprises a latch hook portion and a stress portion, the baffle block performs pendulum motion around a rotating shaft, the baffle block swings clockwise and is locked with a latch hook portion of the locking block, the baffle block swing anticlockwise and is unlocked with the locking block, the baffle block comprises a locking portion and a disengagement prevention portion, the locking portion is located inside the upper notch of a suspension lug, and the disengagement prevention portion is located inside a lug hole of the suspension lug. A suspension ring can be firmly blocked into the lug hole, and the using stability of the whole lifting system is ensured; lifting of the single suspension ring can be avoided, and potential safety hazards are eradicated.

The invention discloses a semiautomatic assembly tool of an auto backrest knob assembly. The semiautomatic assembly tool comprises a workbench and a control system. The semiautomatic assembly tool is characterized in that a rotary motor and a fixed block are arranged on the workbench, the fixed block is arranged above the rotary motor, a toothed bar is arranged on the output end of the rotary motor, external teeth of the toothed bar are matched with internal teeth of a knob driving disc, an installation opening is formed in the fixed block, the inner contour of the installation opening is matched with the outer contour of the knob driving disc, and the fixed block is in transmission connection with a horizontal cylinder; the installation opening corresponds to the toothed bar, so that a knob positioning disc in the installation opening sleeves the periphery of the driving disc on the toothed bar; an ejection block which can be used for lifting a product is arranged on the periphery of the toothed bar, and the ejection block corresponds to the knob driving disc and a fixed disc. According to the semiautomatic assembly tool, manual operation is reduced, the assembly precision and production efficiency are increased, the rotating flexibility between the driving disc and the positioning disc is guaranteed, and the problems of abnormal sound and the like during operation are solved.

The invention discloses a method for preventing drop and hoisting of a single hanging ring. The method comprises the steps that a, a drop preventing mechanism of a system for preventing drop and hoisting of the single hanging ring is opened and made to be in an unlocking state; b, when one of the hanging rings is mounted in the position, on one side of an elevator, of a lug hole of a lifting lug, an induction part of a drop preventing part sends a signal, after receiving the signal, a controller forbids moving of a runner wagon, the runner wagon is in a stop state, and after the hanging ring enters the lug hole, the drop preventing mechanism is in a locking state, and the hanging ring is blocked in the lug hole; and c, and the other hanging ring is mounted in the position, on the other side of the elevator, inside the lug hole of the lifting lug, the induction part of the drop preventing part sends a signal, and after receiving the signal, the controller allows the runner wagon to move. It can be effectively guaranteed that the two hanging rings both enter the lug hole, so that single hanging ring hoisting is avoided. Through the joint effect of the drop preventing mechanism and the drop preventing part, the hanging rings can be blocked firmly in the lug hole, slipping is avoided, the working stability and reliability of the elevator are improved, and the safety accident is eradicated.

The invention proposes an overhanging device, comprising: a suspension plate, a first connection plate, a second connection plate, a connection assembly and a wire clamp, wherein the suspension plate is used for the connection with a power transmission tower; the first connection plate is connected with the suspension plate; the second connection plate is connected with the first connection plate through the connection assembly. The connection assembly and the second connection plate are in rotary connection. The wire clamp and the second connection plate are connected; and the wire clamp is used to have the ground wire clamped. According to the invention, the first connection plate and the second connection plate in the overhanging device are connected through a connection assembly, and in addition, the second connection plate and the connection assembly are in rotary connection, which means that the second connection plate can rotate relative to the first connection plate so as to drive the wire clamp to rotate. In this manner, the rotation flexibility of the wire clamp can be ensured. More particularly, in regions where the height difference is large or the ice load is severe, the outlet angle of the wire clamp can be controlled not to be greater than the designed value, therefore, avoiding the damage to the wire clamp due to the concentrated stress and ensuring the safe operation of the ground wire.