Three-level buffering heavy-load elastic backing plate and three-level buffering vibration-damping method

Abstract

The invention discloses a three-level buffering heavy-load elastic backing plate and a three-level buffering vibration-damping method. The three-level buffering heavy-load elastic backing plate includes a middle main body and two side main bodies; each side main body is provided with a step surface; a high-position big boss is arranged on the middle main body, each side main body is provided with reinforcing ribs, high-position big bosses and low-position small bosses, and the high-position big bosses and the low-position small bosses are alternately arranged. Through the high-position big bosses, the low-position small bosses, the reinforcing ribs and the step surfaces, a three-level static rigidity surface is formed, wherein the high-position big bosses form a first-level static rigidity surface, the low-position small bosses and the reinforcing ribs form a second-level static rigidity surface, and the step surfaces form a third-level static rigidity surface. When the heavy-load elastic backing plate is under heavy-load pressure, the buffering intensity of the heavy-load elastic backing plate is gradually increased, the static rigidity is progressively increased, and three-level buffering vibration damping is achieved. According to the three-level buffering heavy-load elastic backing plate and the three-level buffering vibration-damping method, the balance of trains can be effectively maintained, the vibration-damping effect of the backing plate is further improved, and the backing plate can prevent water accumulation and resist fatigue and resist rollover and is strong in carrying capacity.

Description

technical field [0001] The invention relates to the technical field of vibration reduction, in particular to a three-stage buffer heavy-duty elastic backing plate and a three-stage buffer vibration reduction method. Background technique [0002] In heavy-duty railways and freight railways, due to the large load and high fatigue strength, there are high requirements for the entire fastener system, especially the heavy-duty backing plate, so the development of higher safety and better comfort Backing plates are of great significance. At present, the heavy-duty pad materials used are mainly rubber or thermoplastic polyester elastomer (TPEE), and the performance of rubber materials will gradually decrease with aging under comprehensive conditions such as heat, water, electricity, heavy pressure, and fatigue. The rubber backing plate is crushed and fails; TPEE has a strong ability to withstand heavy loads, but it is easy to deform due to local heavy loads, causing local stress c...

AI Technical Summary

Problems solved by technology

At present, the heavy-duty pad materials used are mainly rubber or thermoplastic polyester elastomer (TPEE), and the performance of rubber materials will gradually decrease with aging under comprehensive conditions such as heat, water, electricity, heavy pressure, and fatigue. The rubber backing plate is crushed and fails; TPEE has a strong ability to bear heavy loads, but it is easy to deform due to local heavy loads, causing local stress concentration, resulting in local node static stiffness that deviates too much from the design value and fails

The existing heavy-duty elastic backing plates are mostly elastic backing plates with first-level or second-level buffering. When the load perpendicular to the backing plate increases to a certain value, the static stiffness can rise rapidly. force, and the load cannot be provided in steps, the current backing plate cannot meet this requirement

Moreover, the existing heavy-duty backing plate structure generally designs high and low recesses or ribs on the upper surface of the main body of the backing plate, often without considering the closed space formed by the intersecting network structure, which will be damaged during use. Lead to continuous deposition of water, dust, etc., resulting in the reduction of the overall performance of the backing plate, and the static stiffness of local nodes will deviate too much from the design value and fail

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