Engineering machinery cab door sealing structure

Abstract

The utility model relates to the technical field of engineering machinery cab door sealing, in particular to an engineering machinery cab door sealing structure which comprises a door frame assembly, a door and a sealing strip assembly, the door frame assembly comprises a top door frame and other door frames, and the sealing strip assembly comprises a fixing face, a first sealing cavity connected to the fixing face and a first blocking strip; wherein one side, close to the top door frame, of the first sealing cavity matched with the top door frame is connected with a second sealing cavity, and one side, close to the top door frame, of the second sealing cavity is connected with a second barrier strip. And the sealing strip is additionally provided with a double-bubble sealing form, so that the sealing performance is improved, and the purposes of improving the driving comfort and further improving the product quality are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery cab door sealing, in particular to an engineering machinery cab door sealing structure. Background Art

[0002] As infrastructure auxiliary equipment, engineering vehicles are widely used in various engineering sites. As a key component closely related to the driver, one of the first problems to be solved is the sealing problem.

[0003] Some existing cabs have problems such as low rain test pass rate, rain leakage on doors and windows, etc. The sealing structure cannot effectively isolate the indoor and outdoor environments, especially the sealing problem between the doors and the top door frames, which needs to be improved and enhanced. Utility Model Content

[0004] The utility model provides a sealing structure for a cab door of an engineering machinery, which can solve the problems pointed out in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: including a door frame assembly, a door and a sealing strip assembly, wherein the door frame assembly includes a top door frame and other door frames, and the sealing strip assembly includes a fixed surface, a first sealing cavity connected to the fixed surface, and a first baffle; wherein the first sealing cavity at the cooperation with the top door frame is connected to a second sealing cavity on a side close to the top door frame, and the second sealing cavity is connected to a second baffle on a side close to the top door frame.

[0006] Preferably, a protrusion is provided on the outer surface of the first sealing cavity.

[0007] Beneficial effect: The utility model provides a sealing structure for a cab door of an engineering machinery, which improves and enhances the sealing performance by optimizing the structure of the sealing strip and adding a double-bubble sealing form to the sealing strip, so as to achieve the purpose of improving driving comfort and further improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the sealing at the top door frame of the utility model;

[0009] Figure 2 It is a schematic diagram of the sealing of the remaining door frames of the present invention;

[0010] Figure 3 It is a schematic diagram of the sealing strip of the utility model;

[0011] Figure 4 For this utility model Figure 3 Schematic diagram of the cross section at B;

[0012] Figure 5 For this utility model Figure 3 Schematic diagram of the cross section at A in the middle;

[0013] Description of reference numerals:

[0014] Reference numerals in the figure: top door frame 11; other door frames 12; door 2; sealing strip assembly 3; fixing surface 31; first sealing cavity 32; first stop strip 33; second sealing cavity 34; second stop strip 35; protrusion 36; buckle 4. DETAILED DESCRIPTION

[0015] A specific implementation mode of the present utility model is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode. Example

[0016] like Figure 1-5 As shown, a sealing structure of a door of a cab of an engineering machinery includes a door frame assembly, a door 2 and a sealing strip assembly 3, wherein the door frame assembly includes a top door frame 11 and other door frames 12, wherein the other door frames 12 refer to other door frames except the top door frame 11, and the sealing strip assembly 3 includes a fixing surface 31, a first sealing cavity 32 connected to the fixing surface 31, and a first baffle 33; the sealing strip assembly 3 is connected and fixed to the door 2 via the fixing surface, specifically, by a buckle 4, wherein the first sealing cavity 32 at the cooperation with the top door frame 11 is connected to a second sealing cavity 34 on the side close to the top door frame 11, and the second sealing cavity 34 is connected to a second baffle 35 on the side close to the top door frame 11.

[0017] When the cab door is in the closed state, the sealing strip is compressed by 1 / 3-1 / 2 to compensate for the deviation of the sealing surface caused by processing accuracy and achieve better sealing. A double bubble seal is added to the top sealing strip assembly 3, which includes two sealing cavities, a first sealing cavity 32 and a second sealing cavity 34. The first sealing cavity 32 contacts the sealing surface, and the second sealing cavity 34 contacts the sealing surface and the side of the top door frame 11, thereby achieving a better sealing effect.

[0018] A protrusion 36 is provided on the outer surface of the first sealing cavity 32 , and the sealing performance can be further improved by the protrusion 36 .

[0019] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A sealing structure for a cab door of an engineering machinery, comprising a door frame assembly, a door (2) and a sealing strip assembly (3), wherein the door frame assembly comprises a top door frame (11) and other door frames (12), characterized in that: The sealing strip assembly (3) comprises a fixing surface (31), a first sealing cavity (32) connected to the fixing surface (31), and a first stopper strip (33); wherein the first sealing cavity (32) at the position where it cooperates with the top door frame (11) is connected to a second sealing cavity (34) on a side close to the top door frame (11), and the second sealing cavity (34) is connected to a second stopper strip (35) on a side close to the top door frame (11).

2. The sealing structure of a construction machinery cab door according to claim 1, characterized in that: A protrusion (36) is provided on the outer surface of the first sealed cavity (32).

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