Flexible transmission windproof iron wedge

Abstract

The utility model provides a kind of windproof iron wedge of flexible transmission, including rack;Driving mechanism is set on rack;Transmission mechanism, including balance wheel, fixed pulley set and transmission arm, balance wheel is rotatably set on rack, fixed pulley set is set on rack and is located the below of balance wheel, transmission arm one end is connected with balance wheel, other end is connected with the output end of driving mechanism;Wedge, by multiple connecting ropes be connected in the below of rack, the middle portion of connecting rope is passed through fixed pulley set, and its end portion is wound and fixed on balance wheel;Wherein, balance wheel includes at least two take-up radius different take-up part, when driving mechanism drives balance wheel to rotate by transmission arm, drive the connecting rope wound on different take-up part and carry out different amount take-up, to make wedge produce inclination change in lifting process.The utility model uses flexible transmission structure to replace traditional rigid link transmission, can significantly improve the reliability of windproof brake.

Claims

1. A flexible transmission windproof iron wedge, characterized in that, include: frame; The drive mechanism is mounted on the frame; The transmission mechanism includes a balance wheel, a fixed pulley block, and a transmission arm. The balance wheel is rotatably mounted on the frame, the fixed pulley block is mounted on the frame and located below the balance wheel, one end of the transmission arm is connected to the balance wheel, and the other end is connected to the output end of the drive mechanism. The wedge is connected to the bottom of the frame by multiple connecting ropes. The middle part of the connecting ropes passes around the fixed pulley group, and its end is wrapped and fixed to the balance wheel. The balance wheel includes at least two retraction and extension sections with different retraction and extension radii. When the drive mechanism drives the balance wheel to rotate through the transmission arm, it causes the connecting ropes wound on the different retraction and extension sections to retract and extend in different amounts, thereby causing the wedge to change its tilt angle during the lifting and lowering process.

2. The windproof iron wedge with flexible transmission according to claim 1, characterized in that, The balance wheel includes a first retractable portion and two second retractable portions symmetrically arranged on both sides of the first retractable portion. The retractable radius of the first retractable portion is greater than that of the second retractable portions.

3. The windproof iron wedge with flexible transmission according to claim 2, characterized in that, The connecting rope includes a first connecting rope and a second connecting rope. One end of the first connecting rope is connected to one side of the upper surface of the wedge along its length, and the other end passes around the fixed pulley assembly and is wound around the second take-up and release part. One end of the second connecting rope is connected to the other side of the upper surface of the wedge along its length, and the other end passes around the fixed pulley assembly and is wound around the first take-up and release part.

4. The windproof iron wedge with flexible transmission according to claim 3, characterized in that, The fixed pulley assembly includes a first fixed pulley and a second fixed pulley; The first connecting rope is configured to start from the wedge, go around the upper surface of the first fixed pulley, go around the lower surface of the second fixed pulley, and then wrap around the second take-up and release part; The second connecting rope is configured to start from the wedge, go around the side of the second fixed pulley, and then wrap around the first take-up and release part.

5. The windproof iron wedge for flexible transmission according to claim 1, characterized in that, The transmission mechanism further includes an adjustment component, which includes: A connecting plate is disposed on the side of the balance wheel, and the connecting plate is provided with a through hole for the connecting rope to pass through; A fixing plate is vertically disposed on the side of the connecting plate opposite to the balance wheel; The adjusting screw has one end fixedly connected to the end of the connecting rope passing through the through hole, and the other end passes through the fixing plate and is fixedly connected to the fixing plate by two locking nuts; By rotating the locking nut, the adjusting screw is driven to move relative to the fixed plate, thereby adjusting the working length of the connecting rope.

6. The windproof iron wedge for flexible transmission according to claim 1, characterized in that, The rack includes: roof, Two side plates are symmetrically arranged on both sides of the length direction of the top plate, and the top plate and the two side plates are connected to form a U-shaped structure; A pivot shaft is rotatably connected between two side plates, used to connect the balance wheel and the transmission arm; At least one mounting rod, fixed between the two side plates and located below the pivot, is used to mount the fixed pulley assembly.

7. The windproof iron wedge with flexible transmission according to claim 6, characterized in that, The frame also includes a first guide plate and a second guide plate. The first guide plate and the second guide plate are respectively provided on both sides of the bottom of each side plate, which are used to contact the side of the wedge block to provide guidance when the wedge block is raised and lowered.

8. The windproof iron wedge for flexible transmission according to claim 1, characterized in that, The drive mechanism is a linear drive mechanism, and its output end is connected to one end of the transmission arm via a connecting rod.

9. The windproof iron wedge for flexible transmission according to claim 8, characterized in that, The drive mechanism is an electro-hydraulic actuator.

10. The windproof iron wedge with flexible transmission according to claim 9, characterized in that, It also includes a position detection mechanism, which comprises: The induction plate is mounted on the push rod of the electro-hydraulic actuator; A switch mounting plate is disposed on the housing of the electro-hydraulic actuator; A first position sensor is located on the top of the switch mounting plate to detect the fully extended position of the push rod and is electrically connected to an external control system. The second position sensor is located at the bottom of the switch mounting plate and is used to detect the fully retracted position of the push rod. It is also electrically connected to the external control system.

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