Air inlet structure of air filter and engineering machinery

Abstract

The utility model relates to an air filter, in order to solve the problem that an air inlet structure of the air filter affects opening of a hood, the air inlet structure of the air filter and engineering machinery are constructed, and the air inlet structure of the air filter comprises the air filter, a rubber corrugated pipe, the hood, a connecting seat and a rainproof cap. The connecting seat is fixed on the hood, the lower end of the connecting seat penetrates to the lower side of the hood, and the rainproof cap is fixed at the upper end of the connecting seat; the rubber corrugated pipe is vertically arranged, the lower end of the rubber corrugated pipe is fixedly connected with the air filter, and the upper end of the rubber corrugated pipe abuts against and communicates with the lower end of the connecting base. According to the utility model, when the hood is opened, the rubber corrugated pipe is separated from the lower connecting seat, so that the opening of the hood is not influenced; after the hood is closed, the upper end of the rubber corrugated pipe abuts against and communicates with the lower end of the connecting base, so that air enters the air filter normally.

Description

Technical Field

[0001] The utility model relates to an air filter, and more specifically to an air filter intake structure and engineering machinery. Background Art

[0002] Engineering machinery powered by fuel engines are usually equipped with air filters to filter out dust from the air entering the engine. The air filter is usually installed under the hood and draws air from outside the hood through its air intake structure. The air filter intake structure includes an air filter, a rubber bellows, a connecting seat, and a rain cap. The connecting seat is fixed to the hood, and the upper end of the connecting seat is connected to the rain cap. The two ends of the rubber bellows are respectively fixedly connected to the lower end of the connecting seat and the air inlet of the air filter. External air enters the air filter through the rain cap, the connecting seat, and the rubber bellows.

[0003] In the prior art, the connection base is connected to the hood by bolts, and the connection base is connected to the air filter by a rubber bellows, and the two ends of the rubber bellows are fastened by clamps, so that the above parts are connected to the hood as a whole. When inspecting and maintaining the air filter and various parts in the cabin, the hood needs to be opened, but the air filter fixedly installed in the hood and the air intake structure of the air filter are an integrated connection structure. This structure causes the part of the hood above the air filter to be unable to be opened or moved at all times, blocking the operating space for inspection and maintenance, and restricting the convenience of maintenance. Utility Model Content

[0004] The utility model aims to solve the technical problem that the existing air filter air intake structure affects the opening of the hood, and provides an air filter air intake structure and an engineering machinery.

[0005] The utility model discloses a technical solution to achieve its purpose: an air filter intake structure, comprising an air filter, a rubber bellows, a hood, a connecting seat, and a rain cap, wherein the connecting seat is fixed on the hood and its lower end penetrates to the lower side of the hood, and the rain cap is fixed to the upper end of the connecting seat; the rubber bellows is vertically arranged and its lower end is fixedly connected to the air filter, and the upper end of the rubber bellows is in contact with and connected to the lower end of the connecting seat.

[0006] In the air filter air intake structure of the utility model, the rubber bellows has an elastic expansion section.

[0007] In the air filter intake structure of the utility model, the upper end of the rubber bellows and the lower end of the connecting seat are sleeved with each other.

[0008] In the air filter intake structure of the utility model, the surface where the upper end of the rubber bellows and the lower end of the connecting seat are sleeved with each other is a conical surface.

[0009] In the air filter intake structure of the utility model, the lower end of the connecting seat has a circular abutment plane surrounding its inner hole, a limit retaining ring is arranged at the outer ring position of the abutment plane, the upper end of the rubber bellows is located in the limit retaining ring and the upper end face of the rubber bellows is in contact with the abutment plane.

[0010] In the air filter intake structure of the utility model, the upper end of the rubber bellows is provided with an annular flat plate portion surrounding the inner hole of the upper end, and the top surface of the annular flat plate portion is a plane that fits and abuts against the abutting plane.

[0011] In the air filter intake structure of the utility model, the connecting seat includes a cylindrical portion for connecting and installing a rain cap, a flange located at the lower end of the cylindrical portion for fitting and fixedly connecting with the hood, the abutting plane and the limit retaining ring are arranged on the lower side of the flange, and the flange is fixedly connected to the hood.

[0012] In the air filter intake structure of the utility model, the flange is fixed to the upper side surface of the hood, and the limit retaining ring is located in the through hole of the hood.

[0013] In the air filter air intake structure of the utility model, the lower end of the rubber bellows is sleeved with the air filter air intake and a clamping hoop is installed at the sleeve joint.

[0014] The utility model provides a technical solution for achieving the purpose: an engineering machine having the above-mentioned air filter intake structure, wherein the hood is hingedly installed and turned over by a pin shaft.

[0015] Compared with the prior art, in the air filter intake structure of the utility model, when the hood is opened, the rubber bellows is disengaged from the lower connecting seat, which does not affect the opening of the hood; after the hood is closed, the upper end of the rubber bellows is in contact with the lower end of the connecting seat and is connected, so that the air filter can normally intake air. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the air intake structure of the air filter of the utility model.

[0017] Figure 2 The utility model is a structural schematic diagram of a connecting seat in the air intake structure of an air filter.

[0018] Figure 3 The utility model is a structural schematic diagram of a rubber bellows in the air intake structure of an air filter.

[0019] Figure 4 The utility model is a schematic diagram of the connection between the connecting seat and the bellows in the air intake structure of the air filter.

[0020] Figure 5The utility model is a schematic diagram of the state of the air filter intake structure when the hood is opened.

[0021] Parts names and serial numbers in the figure:

[0022] Air filter 1.

[0023] The rubber bellows 2 , the straight tube section 21 , the elastic telescopic section 22 , and the annular flat plate section 23 .

[0024] Hood 3.

[0025] The connecting seat 4 , the abutting plane 41 , the limit retaining ring 42 , the cylinder 43 , and the flange 44 .

[0026] Rain cap5. DETAILED DESCRIPTION

[0027] The specific implementation scheme is described below with reference to the accompanying drawings.

[0028] like Figure 1 As shown, the air filter intake structure includes an air filter 1, a rubber bellows 2, a hood 3, a connecting seat 4, and a rain cap 5. The connecting seat 4 is fixed on the hood 3 and the lower end penetrates to the lower side of the hood 3, and the rain cap 5 is fixed to the upper end of the connecting seat 4; the rubber bellows 2 is vertically arranged and the lower end is fixedly connected to the air filter 1, and the upper end of the rubber bellows 2 is in contact with the lower end of the connecting seat 4 and is connected.

[0029] In this embodiment, the upper end of the rubber bellows 2 is in contact with the lower end of the connecting seat 4 and is connected. When the hood 3 needs to be opened, the connecting seat 4 and the rain cap 5 move along with the hood 3 and separate from the rubber bellows 2. The air filter intake structure does not affect the flipping and opening of the hood 3, which provides convenience for opening the hood 3 for later maintenance and repair of components inside the hood 3.

[0030] like Figure 3 As shown, the rubber bellows 2 has an elastic telescopic section 22. The elastic telescopic section 22 can better enable the upper end of the rubber bellows 2 to be better connected to the connecting seat 4 when the hood 3 is closed.

[0031] In some embodiments, the upper end of the rubber bellows 2 and the lower end of the connection seat 4 are sleeved together. The surface where the upper end of the rubber bellows 2 and the lower end of the connection seat 4 are sleeved together is a conical surface. The conical surfaces are inserted into each other, which facilitates the connection and disengagement of the sleeve.

[0032] In other embodiments, the connection between the rubber bellows 2 and the connection seat can also be: Figure 2 As shown, the lower end of the connection seat 4 has a circular abutment plane 41 surrounding its inner hole, and a limit stop ring 42 is provided at the outer ring position of the abutment plane 41. Figure 4As shown, the upper end of the rubber bellows 2 is located in the limiting retaining ring 42 and the upper end face of the rubber bellows 2 is in contact with the abutting plane 41. The limiting retaining ring 42 limits the rubber bellows 2 to prevent the rubber bellows 2 from slipping off the connecting seat 4. Furthermore, the upper end of the rubber bellows 2 has an annular flat plate portion 23 surrounding the inner hole of the upper end thereof, and the top surface of the annular flat plate portion 23 is a plane that is in contact with the abutting plane 41.

[0033] like Figure 2 As shown, the connection seat 4 includes a barrel 43 for connecting and installing the rain cap 5, a flange 44 located at the lower end of the barrel 43 for fitting and fixing with the hood 3, a contact plane 41 and a limit retaining ring 42 are arranged on the lower side of the flange 44, and the flange 44 is fixedly connected to the hood 3. Further, the flange 44 is fixed to the upper side of the hood 3, and the limit retaining ring 42 is located in the through hole of the hood 3. The lower end of the rubber bellows 2 is sleeved with the air inlet of the air filter 1 and a clamping hoop is installed at the sleeve.

[0034] This embodiment also provides an engineering machine having the aforementioned air filter intake structure, wherein the hood is hingedly mounted in a flip manner via a pin shaft. Figure 5 As shown, when the hood is flipped open around the pin shaft, the connecting seat and the rubber bellows are out of contact. When the hood is closed, the connecting seat and the rubber bellows are abutted and connected, and the air intake structure is turned on, so that the air filter can normally intake air.

Claims

1. An air filter intake structure, characterized in that: It includes an air filter, a rubber bellows, a hood, a connecting seat, and a rain cap. The connecting seat is fixed on the hood and its lower end penetrates to the lower side of the hood. The rain cap is fixed to the upper end of the connecting seat. The rubber bellows is vertically arranged and its lower end is fixedly connected to the air filter. The upper end of the rubber bellows is in contact with and connected to the lower end of the connecting seat.

2. The air filter intake structure according to claim 1, characterized in that The rubber bellows has an elastic expansion section.

3. The air filter intake structure according to claim 1 or 2, characterized in that: The upper end of the rubber bellows and the lower end of the connecting seat are sleeved with each other.

4. The air filter intake structure according to claim 3, characterized in that: The surface where the upper end of the rubber bellows and the lower end of the connecting seat are sleeved with each other is a conical surface.

5. The air filter intake structure according to claim 1 or 2, characterized in that: The lower end of the connecting seat has an annular abutment plane surrounding its inner hole, and a limit retaining ring is arranged at the outer ring position of the abutment plane. The upper end of the rubber bellows is located in the limit retaining ring and the upper end face of the rubber bellows is in contact with the abutment plane.

6. The air filter intake structure according to claim 5, characterized in that: The upper end of the rubber bellows is provided with an annular flat plate portion surrounding the inner hole of the upper end, and the top surface of the annular flat plate portion is a plane that fits and abuts against the abutting plane.

7. The air filter intake structure according to claim 5, characterized in that The connecting seat includes a cylindrical portion for connecting and installing a rain cap, a flange located at the lower end of the cylindrical portion for fitting and fixedly connecting with the hood, the abutting plane and the limit retaining ring are arranged on the lower side of the flange, and the flange is fixedly connected to the hood.

8. The air filter intake structure according to claim 7, characterized in that: The flange is fixed to the upper side of the hood, and the limit retaining ring is located in the through hole of the hood.

9. The air filter intake structure according to claim 1, characterized in that: The lower end of the rubber bellows is sleeved with the air inlet of the air filter and a clamping hoop is installed at the sleeve connection.

10. An engineering machine, characterized in that: It has an air filter intake structure as claimed in any one of claims 1 to 9, and the hood is arranged for flip installation by means of a pin-hinged hinge.

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