43results about How to "Act as limit protection" patented technology

The invention discloses an active and passive integrated four-feet converged type vibration isolator which comprises an upper connection plate (1), inclined micro-vibration control units (2), a thirdslotted disk spring (4), a lower connection plate (5) and a slotted cylindrical spring (6); one end of the slotted cylindrical spring (6) is connected with the third slotted disk spring (4); the otherend of the slotted cylindrical spring (6) is fixed to the middle part of the lower connection plate (5); the third slotted disk spring (4) is fixed to the middle part of the upper connection plate (1); the inclined micro-vibration control units (2) are uniformly distributed around a center shaft of the slotted cylindrical spring (6) in the circumferential direction of the upper connection plate (1), and are obliquely mounted; one ends of the inclined micro-vibration control units (2) are connected with the upper connection plate (1); and the other ends of the inclined micro-vibration controlunits (2) are connected with the lower connection plate (5). With the adoption of an active and passive integrated structure, wide frequency band micro-vibration control can be realized, the vibrationisolation efficiency of the vibration isolator and the adaptability of the vibration isolator to a complex environment and a changing object are improved.

The invention relates to the technical field of glass tempering auxiliary equipment, and in particular relates to an air grid lifting device. The air grid lifting device comprises a base, a guide column, a motor and a lifting base, wherein the motor is connected to a driving shaft, and the driving shaft is connected to a driven shaft. The air grid lifting device is characterized in that crank connecting link lifting mechanisms are arranged at two ends of the driving shaft and the driven shaft; the crank connecting link lifting mechanisms are hinged to the lifting seat for driving the lifting seat to lift along the guide column; the front ends of the driving and driven shafts are connected to a first parallel double crank connecting link lifting mechanism and the back ends of the driving and driven shafts are connected to a second parallel double crank connecting link lifting mechanism; the first and second parallel double crank connecting link lifting mechanisms are symmetrically distributed and are driven by the motor to move synchronously so as to drive the driving and driven shafts to rotate synchronously. The air grid lifting device has the advantages that the air grid liftingdevice is simple in structure, stable to operate and small in noise, and meanwhile, the invention also provides a tempered air grid system adopting the air grid lifting device.

The invention relates to the field of continuous casting machines in the metallurgical industry, in particular to a vibration buffer limit device, which includes a buffer connection frame and a buffer connection seat, an upper roller assembly is arranged on the lower part of the buffer connection frame, a roller mounting frame is arranged on the upper part of the buffer connection seat, and the roller is installed The lower roller assembly is arranged on the frame, the two sides between the buffer connection frame and the buffer connection seat are respectively provided with vertical limit plates, the upper part of the limit plate is provided with a vertical first limit hole, and the upper roller assembly has an upper roller and an upper roller. The roller shaft, the lower roller assembly has a lower roller, and a buffer is arranged between the upper roller and the lower roller. The present invention, through the first limit hole opened on the limit plate, can limit the stroke of the upper roller shaft when the buffer is forced to reciprocate, thereby limiting the position of the reciprocating motion of the buffer, and can give the vibration device It plays the role of limit protection, so as to avoid accidents such as downtime caused by the over-travel operation of the buffer.

The present invention provides a control system and method for a liquid crystal panel hoist, the system comprising: a PLC controller connected to a barcode reader for outputting control according to the position information of the barcode tape read by the barcode reader signal; the drive motor is used to drive the lifting of the car of the hoist; the frequency converter is connected to the PLC controller and the drive motor respectively, and is used to control the drive motor according to the control signal of the PLC controller; the servo motor is used to drive Lifting and lowering of the transport line in the car; the servo driver is connected to the PLC controller and the servo motor respectively, and is used to drive the servo motor to rotate according to the control signal of the PLC controller. The present invention realizes the lifting and lowering of the transportation line in the car through the servo motor, which solves the problem that the deformation of the steel wire rope causes the deviation of the height of the transportation line in the car and the external transportation line, and makes the position control accuracy of the transportation line in the car Control within 0.5mm.

The invention discloses a car-following rod-colliding preventing device, and relates to the technical field of traffic facilities. The car-following rod-colliding preventing device comprises a barriergate case body and a barrier gate rod, and further comprises a photoelectric sensor installed on the ground. A first-stage stroke switch is installed on the barrier gate case body and corresponds tothe barrier gate rod. A through groove is formed in the lower portion of the barrier gate rod in the length direction. A barrier assembly is arranged in the through groove, and comprises a bearing plate arranged in the through hole, a first-stage releasing device arranged at the inner right end of the through groove, a second-stage releasing device arranged at the left end of the top face of the bearing plate, and a barrier body device arranged on the lower side of the bearing plate. The left side of the bearing plate is rotationally connected with the front side wall and the rear side wall ofthe through groove through rotating shafts. A load bearing block is fixed to the right side of the bearing plate. A pressure spring is arranged at the right portion of the upper side wall of the through groove in the vertical direction. The car-following rod-colliding preventing device has the advantages that the problem that a car behind closely follows a car in front and rushes through a barrier gate rod when passing through a barrier gate can be avoided, and operation is simple.

The invention discloses a crawling training device for infants and relates to a training device for infants. The device comprises a crawling channel, a supporting base, a channel gradient adjustment mechanism, a channel plane rotation mechanism, anti-rollover mechanisms and a music learning control system. The crawling channel is a cross crawling channel, obstacle cloth bags are arranged in the channel, and a direction training operation button is arranged at the inner side of an end point of one end of the channel; the supporting base comprises a supporting plate, anti- turnover clump weights, a lower supporting column and the like; the channel gradient adjustment mechanism comprises front and rear supporting blocks, left and right adjustment rotary buttons, left and right limit blocks and the like; the channel plane rotation mechanism comprises a plane bearing, and the four anti-rollover mechanisms are symmetrically connected to the bottom of the crawling channel separately. According to the crawling training device for the infants, the gradient of the crawling channel can be adjusted according to the channel gradient adjustment mechanism, the crawling difficulty of the infants is increased, and the training effect is improved; the device can also assist the infants in developing the direction consciousness, has the advantages of being capable of rotating flexibly and freely,good in safety performance, convenient to use, high in interestingness and the like, and is easy to apply and popularize.

The invention discloses a novel tire steel wire separator. The novel tire steel wire separator structurally comprises a shell, an adjusting mechanism, an iron support, a base, a motor base, a fixing plate and a separation groove, wherein the shell, the fixing plate and the motor base are arranged at the upper end of the base, and the adjusting mechanism is arranged in the shell. The separation groove is formed in the middle of the shell, the shell is welded with the separation groove, and the iron support is arranged at the front end of the base. The novel tire steel wire separator is providedwith the adjusting mechanism so that steel wires at two sides of a tyre are firmly matched with a separating knife on the separator, the automatic adjustment of the tyre position is realized, the problem of great danger of manual adjustment is solved, and the steel wires on both sides of the tyre can be separated at the same time, and the separation efficiency of the steel wires is improved.

The invention discloses an active and passive integrated all-metal micro-vibration control device which comprises a supporting rod, diaphragm springs and the like. The supporting rod penetrates in a first shell inner cylinder, and a coil support is fixedly installed at the other end of the supporting rod through a supporting plate. A voice coil motor rotor is installed on the coil support and moves transversely between an inner ring permanent magnet and an outer ring permanent magnet of a voice coil motor stator in the axial direction. One end of a metal spring is fixedly installed at the connecting opening position of a second shell and a first shell through an end cover, and the other end of the metal spring is matched with the end portion of a limiting sleeve. The limiting sleeve is supported in the second shell through a metal rubber gasket. The metal spring is connected with external equipment through an inner thread at the end portion and presses the limiting sleeve. The diaphragm springs are installed between the supporting rod and an end cover of the first shell, between the coil support and the inner wall of the end cover of the first shell and between the supporting plate of the coil support and the end cover of the metal spring. According to the active and passive integrated all-metal micro-vibration control device, wide-frequency-band micro-vibration control can be achieved, the vibration isolation effect of a vibration isolator is improved, and adaptability to various complex environments is improved.