The invention provides a construction machinery, which comprises: a cooling fan (14) for generating cooling air; a heat exchanger (13) disposed on the upstream side of the cooling fan; a dust screen (18) disposed on the upstream side of the heat exchanger and used for removing foreign matters in the cooling air sucked in by the cooling fan; and a fixing part (20) used for fixing the dust screen; wherein the fixing part is configured to include: a first component (30) provided with a pin shaft (31) and a second component (40) provided with a penetrating part (41) for the pin shaft to penetratethrough, the penetrating part of the second component is formed by an elastomer having a variable diameter, the diameter of the penetrating part is smaller than the diameter of the pin shaft in a state that the first component is not inserted into the second component, and the diameter of the penetrating part is expanded by the pin shaft in a state that the first component is inserted into the second component, thereby fixing the dust screen. According to the invention, deformation of the dust screen can be prevented, and the dustproof function of the dust screen can be stably maintained.

    本发明提供一种工程机械,包括:用于产生冷却风的冷却风扇(14);配置在冷却风扇的上游侧的热交换器(13);设置在热交换器的上游侧并除去冷却风扇吸入的冷却风中的异物的防尘网(18);以及用于固定防尘网的固定部件(20),固定部件构成为包括:具有销轴(31)的第一部件(30)、和具有供销轴穿插的贯穿部(41)的第二部件(40),第二部件的贯穿部由直径可变的弹性体形成,在第一部件未穿插到第二部件的状态下形成为贯穿部的直径小于销轴的直径,在第一部件穿插到第二部件的状态下形成为贯穿部的直径被销轴撑大而由此固定防尘网。根据本发明,能够防止防尘网变形、稳定地维持防尘网的防尘功能。


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    Title :

    Construction machinery


    Additional title:

    工程机械


    Contributors:
    BIAN YAJUN (author)

    Publication date :

    2020-09-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / E02F Baggern , DREDGING



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