Snubber for excavator bucket door

A snubber (1) for an excavator bucket door that permanently controls the deformation due to the effect of working pressures during operation, improving braking performance, comprising:

• a) a circular body (3) with a chamber (2), said chamber (2) having circular side plates (5);
• b) a mounting foot (4) with perforations (21) for fixing to the excavator bucket;
• c) a shaft (6) mounted on the circular side plates (5) by means of bearings (13) traversing said chamber (2), extending through the circular side plates (5), being connected to an arm (12) connected to the door from the excavator bucket by means of a connecting lug (20);
• d) a vane (7) on said shaft (6) inside the chamber (2) that rotates in solidarity with it, where the vane (7) is in contact with the circular side plates (5) and the vane (7) having a seal (16) in its upper part commanded by springs (14);
• e) a sealing surface (8) on the vane (7);
• f) a vane blade (9), inside the chamber (2), which extends from the inner surface of the circular body (3) to the sealing surface (8) of the vane (7) between the circular side plates (5), where the vane blade (9) and the vane (7) divide the chamber (2) into a first sub chamber (A) and a second sub chamber (B) and the vane blade (9) having a seal (15) in its upper part commanded by springs (14);
• g) a valve box (10) installed on the outside of the snubber (1) containing valves (22, 23, 24, 25, 26, 27) that allow double effect control over the opening and/or closing speed of excavator bucket door,
• wherein the valve box (10) includes a monitoring device, to monitor the status of the snubber (1), which includes at least one pressure sensor connected directly to each sub-chamber (A, B), from the valve box (10), to measure the pressure inside;
• processing means in which said at least two sensors are connected, so that when the pressure sensors register a pressure outside a pre-established operating range for each sub-chamber (A, B), an alert is generated.