Connecting structure of prefilter for loading machine

Abstract

The utility model provides a prefilter connecting structure for a loader, which belongs to the technical field of loaders and comprises an air filter and a prefilter, an air inlet pipe of the air filter is fixedly connected with a telescopic rubber pipe, the prefilter is fixed on an engine cover through a fixing seat, and the top end of the telescopic rubber pipe is contacted with the fixing seat. The noise outside the engine can be prevented from being increased, dust and rainwater can be prevented from entering a cabin easily, and meanwhile normal opening of the engine hood is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of loaders, and in particular relates to a pre-filter connection structure for loaders. Background Art

[0002] Loaders are mainly used in various places with harsh working conditions such as various mines, quarrying sites, earthwork sites, etc. The air in these places is dusty, so in order to ensure the normal air intake of the engine intake system, a pre-filter is usually added to the engine intake system to remove impurities in the air in advance.

[0003] The engine's air filter is located inside the hood, while the pre-filter is located outside. Currently, the air filter and pre-filter are connected directly. To ensure the hood opens properly, a slotted hole must be created in the hood. The slotted hole's diameter must be larger than the pre-filter's maximum diameter, leaving enough clearance for assembly. This slotted hole leaves the hood top unsealed, increasing external noise and allowing dust and rainwater to enter the cabin, while also affecting the aesthetics. Utility Model Content

[0004] In response to the defects or shortcomings in the existing technology, the utility model provides a pre-filter connection structure for a loader, which does not require a long hole to be opened on the engine hood, thereby avoiding the increase of external noise and the easy entry of dust and rainwater into the cabin, while not affecting the normal opening of the engine hood.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An embodiment of the utility model provides a pre-filter connection structure for a loader, comprising an air filter and a pre-filter, wherein a telescopic hose is fixedly connected to the air intake pipe of the air filter, the pre-filter is fixed to the engine hood via a fixing seat, and the top end of the telescopic hose is in contact with the fixing seat.

[0007] Furthermore, the air filter and the pre-filter are respectively arranged inside and outside the engine hood, and the telescopic hose is located between the air filter and the pre-filter.

[0008] Furthermore, the top end of the telescopic hose is connected to the air outlet pipe of the pre-filter, and the bottom end of the telescopic hose is connected to the air inlet pipe of the air filter.

[0009] Furthermore, the fixing seat includes a fixing section and a connecting section, and the connecting section is welded and fixed above the fixing section.

[0010] Furthermore, the fixing section is a rectangular structure, which is hollow inside and has an opening at the bottom, and a circular hole is provided on the top surface of the fixing section.

[0011] Furthermore, the connecting section is a cylindrical structure with openings at both ends. The diameter of the connecting section is the same as the diameter of the circular hole. The bottom end of the connecting section is fixed on the fixed section, and the axis of the connecting section coincides with the axis of the circular hole.

[0012] Furthermore, a connecting hole is provided on the engine hood, and the size of the connecting hole is larger than the size of the telescopic hose, for the telescopic hose to pass through.

[0013] Furthermore, the diameter of the connecting section is smaller than the diameter of the pre-filter air outlet pipe, the pre-filter air outlet pipe is sleeved on the top of the connecting section and is fixed to the connecting section by a first clamp.

[0014] Furthermore, the bottom end of the fixing section is welded and fixed on the engine hood and is arranged opposite to the connecting hole, and the size of the bottom opening of the fixing section is larger than the size of the connecting hole.

[0015] Furthermore, the bottom diameter of the telescopic hose is larger than the diameter of the air filter inlet pipe, so that the bottom of the telescopic hose can be sleeved on the outside of the air filter inlet pipe and fixed by the second clamp.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The utility model securely connects a telescopic hose to the air filter intake pipe and secures the pre-filter to the engine hood via a fixing base. When the engine hood is closed, the top end of the telescopic hose contacts the fixing base, thereby enabling communication between the pre-filter and the air filter. When the engine hood is opened, the telescopic hose separates from the fixing base, thereby not affecting the opening and closing of the engine hood.

[0018] 2. The utility model connects the prefilter and the engine hood via a fixing base, which covers the connection hole on the engine hood, thereby preventing the increase of external noise and the entry of dust and rain into the engine compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of the connection structure in the embodiment of the utility model;

[0020] Figure 2 This is a diagram showing the state of the engine hood being closed in an embodiment of the present utility model;

[0021] Figure 3 This is a diagram showing the state of the engine hood being opened in an embodiment of the present utility model;

[0022] Among them, 1. Air filter; 2. Pre-filter; 3. Engine hood; 4. Telescopic hose; 5. Fixing seat; 51. Fixing section; 52. Connecting section. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] A typical implementation of the present invention is as follows: Figure 1 and Figure 2 As shown, a pre-filter connection structure for a loader includes an air filter 1 and a pre-filter 2. The air filter 1 and the pre-filter 2 are respectively arranged inside and outside the engine hood 3. A telescopic hose 4 is provided between the air filter 1 and the pre-filter 2. The top end of the telescopic hose 4 is connected to the air outlet pipe of the pre-filter 2, and the bottom end of the telescopic hose 4 is connected to the air inlet pipe of the air filter 1.

[0025] The pre-filter 2 is fixed to the engine hood 3 through a fixing base 5. The fixing base 5 includes a fixing section 51 and a connecting section 52. The fixing section 51 is a rectangular structure, which is hollow inside and has an opening at the bottom. A connecting hole is provided on the engine hood 3. The size of the connecting hole is larger than the size of the telescopic hose 4 for the telescopic hose 4 to pass through. A circular hole is provided on the top surface of the fixing section 51. The connecting section 52 is a cylindrical structure with openings at both ends. The diameter of the connecting section 52 is the same as the diameter of the circular hole. The bottom end of the connecting section 52 is fixed to the fixing section 51. The axis of the connecting section 52 coincides with the axis of the circular hole. The diameter of the connecting section 52 is smaller than the diameter of the outlet pipe of the pre-filter 2. The outlet pipe of the pre-filter 2 is sleeved on the top of the connecting section 52 and is fixed to the connecting section 52 by a first clamp.

[0026] The bottom end of the fixing section 51 is welded and fixed on the engine hood 3 and is arranged opposite the connecting hole. The bottom opening size of the fixing section 51 is larger than the connecting hole size, so that the connecting hole can be covered to prevent dust and rainwater from entering the engine compartment.

[0027] When the engine hood 3 is closed, the top end of the telescopic hose 4 passes through the connecting hole and contacts the top wall of the fixing section 51 of the fixing seat 5 .

[0028] The outer wall of the telescopic hose 4 has a corrugated structure, so that the telescopic hose 4 has a telescopic amount of 10 mm when compressed. The bottom diameter of the telescopic hose 4 is larger than the diameter of the air filter 1 intake pipe, so that the bottom of the telescopic hose 4 can be sleeved on the outside of the air filter 1 intake pipe and fixed by a second clamp to achieve a fixed connection between the telescopic hose 4 and the air filter 1.

[0029] When the engine hood 3 is closed, the top end of the telescopic hose 4 passes through the connecting hole and contacts the top wall of the fixed section 51 of the fixing seat 5, so that the connecting section 52 is connected to the telescopic hose 4. The top end of the telescopic hose 4 is adapted to the top wall of the fixed section 51. At the same time, the top wall of the fixed section 51 of the fixing seat 5 compresses the telescopic hose 4, thereby ensuring the sealing between the top wall of the fixed section 51 and the telescopic hose 4.

[0030] The utility model fixes the telescopic hose 4 to the air intake pipe of the air filter 1 and fixes the pre-filter 2 to the engine hood 3 through the fixing seat 5. When the engine hood 3 is closed, the top of the telescopic hose 4 contacts the fixing seat 5, thereby realizing the communication between the pre-filter 2 and the air filter 1 by using the telescopic hose 4 and the fixing seat 5. Figure 3 As shown, when the engine hood 3 is opened, the telescopic hose 4 is separated from the fixing seat 5, thereby not affecting the normal opening and closing of the engine hood 3.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pre-filter connection structure for a loader, characterized in that: It includes an air filter and a pre-filter, wherein the air intake pipe of the air filter is fixedly connected to a telescopic hose, the pre-filter is fixed to the engine hood via a fixing seat, and the top end of the telescopic hose is in contact with the fixing seat; The fixing seat includes a fixing section and a connecting section, and the connecting section is welded and fixed above the fixing section; The engine hood is provided with a connection hole, the size of which is larger than that of the telescopic hose, for the telescopic hose to pass through; the bottom end of the fixing section is welded and fixed to the engine hood and is arranged opposite the connection hole, and the size of the bottom opening of the fixing section is larger than that of the connection hole; The fixing section is a rectangular structure with a hollow interior and an opening at the bottom. A circular hole is provided on the top surface of the fixing section.

2. A pre-filter connection structure for a loader according to claim 1, characterized in that: The air filter and the pre-filter are respectively arranged inside and outside the engine hood, and the telescopic hose is located between the air filter and the pre-filter.

3. A pre-filter connection structure for a loader according to claim 2, characterized in that: The top end of the telescopic hose is connected to the air outlet pipe of the pre-filter, and the bottom end of the telescopic hose is connected to the air inlet pipe of the air filter.

4. A pre-filter connection structure for a loader according to claim 1, characterized in that: The connecting section is a cylindrical structure with openings at both ends. The diameter of the connecting section is the same as the diameter of the circular hole. The bottom end of the connecting section is fixed on the fixed section, and the axis of the connecting section coincides with the axis of the circular hole.

5. The pre-filter connection structure for a loader according to claim 1, characterized in that: The diameter of the connecting section is smaller than the diameter of the pre-filter air outlet pipe. The pre-filter air outlet pipe is sleeved on the top of the connecting section and is fixed to the connecting section by a first clamp.

6. A pre-filter connection structure for a loader according to claim 1, characterized in that: The bottom diameter of the telescopic hose is larger than the diameter of the air filter inlet pipe, so that the bottom of the telescopic hose can be sleeved on the outside of the air filter inlet pipe and fixed by the second clamp.

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