Engine fan protection device and engine

Abstract

The utility model provides an engine fan protection device and an engine, and belongs to the technical field of engines, the engine fan protection device comprises a protection plate, a plurality of bending plates and a wind scooper, the bending plates are fixed on the wind scooper, and one end of each bending plate far away from the wind scooper is fixedly connected with the protection plate through a bolt. The size of the protection device can be reduced, meanwhile, the influence of engine vibration on the protection device is reduced, and the reliability of the protection device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of engines, and in particular relates to an engine fan protection device and an engine. Background Art

[0002] Traditional mini excavators have high requirements for the protection of rotating parts such as generators, compressors, and fans to prevent mud and sand from entering and affecting normal use. However, general protective devices are arranged on the engine or covering parts, which are large in size, high in cost, difficult to disassemble and assemble, and inconvenient to maintain.

[0003] In addition, existing protective devices are directly fixed to components such as the wind deflector by bolts. During long-term use, the bolts may become loose due to engine vibration and other reasons, and the protective devices may even fall off, affecting the normal use of the excavator. Utility Model Content

[0004] In view of the defects or shortcomings in the prior art, the utility model provides an engine fan protection device and an engine, which can reduce the volume of the protection device, reduce the impact of engine vibration on the protection device, and improve the reliability of the protection device.

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

[0006] In a first aspect, an embodiment of the utility model provides an engine fan protection device, comprising a protection plate, a bent plate and an air guide cover, wherein a plurality of bent plates are provided, and the plurality of bent plates are fixed on the air guide cover, and an end of the bent plate away from the air guide cover is fixedly connected to the protection plate by bolts.

[0007] Furthermore, the protective plate is an arc-shaped plate to fit the outer circular contour of the air guide cover.

[0008] Furthermore, the protective plate is provided with a plurality of long holes, and the plurality of long holes are arranged side by side.

[0009] Furthermore, a plurality of fixing plates are arranged on one side of the protective plate close to the bent plate, the plurality of fixing plates are arranged perpendicular to the protective plate, and a first through hole is opened on the fixing plates.

[0010] Furthermore, the fixed positions of the plurality of bent plates are arranged in one-to-one correspondence with the positions of the plurality of fixed plates.

[0011] Furthermore, the fixing plate and the protective plate are cut and formed as one piece from a steel plate, and the fixing plate and the protective plate are bent into a right angle.

[0012] Furthermore, the bent plate is an L-shaped structure, including a short side and a long side, and the long side and the short side are formed by bending.

[0013] Furthermore, the short side is welded and fixed to the outer wall of the air guide cover, and the long side is arranged perpendicular to the outer wall of the air guide cover.

[0014] Furthermore, a second through hole is formed at one end of the long side away from the short side, and a nut is welded and fixed inside the second through hole.

[0015] In the second aspect, an embodiment of the utility model provides an engine, including an engine fan protection device as described above, and also including an engine body and a radiator, the air guide cover is located between the engine body and the radiator, and is mounted on the outside of the engine fan, and the protection plate is arranged on the side of the air guide cover close to the engine body.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model connects the protective plate through a bent plate, one end of the bent plate is welded and fixed to the air guide cover, and the other end is fixed to the protective plate by bolts. The vibration generated during the operation of the engine will be weakened by the bent plate, thereby reducing the impact of the vibration on the fixation of the protective plate, avoiding the protective device from falling off due to vibration, and does not affect the normal disassembly of the protective device, ensuring the convenience of maintenance.

[0018] 2. The utility model sets a protective plate and fixes the protective plate on the wind guide cover with a bent plate. Compared with the large-area covering parts on traditional excavators, the utility model reduces the mass and volume of the protective net while ensuring performance, facilitates assembly and disassembly, and effectively reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the protective device in the embodiment of the utility model;

[0020] Among them, 1. protective plate; 2. bent plate; 3. air guide cover; 4. long hole; 5. fixed plate. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Embodiment 1

[0023] A typical implementation of the present utility model is as follows Figure 1 As shown, an engine fan protection device includes a protection plate 1, a bent plate 2 and an air guide cover 3. A plurality of bent plates 2 are provided, and the plurality of bent plates 2 are fixed on the air guide cover 3. One end of the bent plate 2 away from the air guide cover 3 is fixedly connected to the protection plate 1 by bolts.

[0024] The protective plate 1 is an arc-shaped plate to adapt to the outer circular contour of the air guide cover 3. A plurality of long holes 4 are opened on the protective plate 1, and the plurality of long holes 4 are arranged side by side. The long holes 4 are convenient for observing the operation of the fan. A plurality of fixing plates 5 are arranged on one side of the protective plate 1 close to the bent plate 2. In the present embodiment, three fixing plates 5 are arranged, and the three fixing plates 5 are all arranged perpendicular to the protective plate 1. A first through hole is opened on the fixing plate 5.

[0025] The fixing plate 5 and the protective plate 1 are formed as one piece by cutting steel plates, and are bent into a right angle between the fixing plate 5 and the protective plate 2, thereby ensuring the stability of the connection between the fixing plate 6 and the protective plate 2. The fixing plate 5 located at the top and middle of the protective plate 1 is bent upward, and the fixing plate 5 located at the bottom of the protective plate 1 is bent downward, thereby facilitating the locking of the bolts between the protective plate 1 and the bent plate 2.

[0026] The bent plate 2 is an L-shaped structure, including a short side and a long side. The long side and the short side are formed by bending, the short side is welded and fixed to the outer wall of the air guide cover 3, the long side is vertically arranged to the outer wall of the air guide cover 3, and a second through hole is opened at the end of the long side away from the short side, and a nut is welded and fixed on the inner side of the second through hole. In this embodiment, three bent plates 2 are provided, and the fixed positions of the three bent plates 2 are arranged one by one corresponding to the positions of the three fixing plates 5. The bolts pass through the first through hole and the second through hole in turn and are threadedly connected with the nuts, so that the protective plate 1 is fixed to the air guide cover 3 by using the bent plate 2.

[0027] When the protective plate 1 is fixedly connected to the air guide cover 3 through the bent plate 2, the protective plate 1 is located outside the fan and does not affect the normal rotation of the fan, thereby playing a protective role for the fan.

[0028] The utility model connects the protective plate through a bent plate, one end of the bent plate is welded and fixed to the air guide cover, and the other end is fixed to the protective plate by bolts. The vibration generated during the operation of the engine will be weakened by the bent plate, thereby reducing the influence of the vibration on the fixation of the protective plate, avoiding the protective device from falling off due to vibration, and not affecting the normal disassembly of the protective device, thereby ensuring the convenience of maintenance.

[0029] Embodiment 2

[0030] The utility model provides an engine, including an engine fan protection device as described in the first embodiment, and also including an engine body and a radiator, wherein an air guide cover 3 is located between the engine body and the radiator, and is sleeved on the outside of the engine fan, and a protection plate 1 is arranged on a side of the air guide cover 3 close to the engine body.

[0031] The utility model provides a protective plate and uses a bent plate to fix the protective plate on the wind guide cover. Compared with the large-area covering parts on traditional excavators, the utility model reduces the mass and volume of the protective net while ensuring performance, facilitates assembly and disassembly, and effectively reduces costs.

[0032] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An engine fan protection device, characterized in that: It includes a protective plate, a bent plate and an air guide cover, wherein a plurality of bent plates are provided, and the plurality of bent plates are fixed on the air guide cover, and one end of the bent plate away from the air guide cover is fixedly connected to the protective plate by bolts, and the protective plate is an arc-shaped plate to adapt to the outer circular contour of the air guide cover; a plurality of long holes are provided on the protective plate, and the plurality of long holes are arranged side by side, and a plurality of fixing plates are provided on the side of the protective plate close to the bent plate, and the plurality of fixing plates are arranged perpendicularly to the protective plate, and a first through hole is provided on the fixing plate.

2. An engine fan protection device as claimed in claim 1, characterized in that: The fixed positions of the plurality of bent plates are arranged in one-to-one correspondence with the positions of the plurality of fixed plates.

3. An engine fan protection device as claimed in claim 1, characterized in that: The fixing plate and the protection plate are cut and formed as one piece by steel plates, and are bent into a right angle between the fixing plate and the protection plate.

4. The engine fan protection device according to claim 1, characterized in that: The bent plate is an L-shaped structure, including a short side and a long side, and the long side and the short side are formed by bending.

5. An engine fan protection device as claimed in claim 4, characterized in that: The short side is welded and fixed on the outer wall of the air guide cover, and the long side is arranged perpendicular to the outer wall of the air guide cover.

6. An engine fan protection device as claimed in claim 4, characterized in that: A second through hole is formed at one end of the long side away from the short side, and a nut is welded and fixed inside the second through hole.

7. An engine, characterized in that: It comprises an engine fan protection device as described in any one of claims 1-6, and also comprises an engine body and a radiator, wherein the air guide cover is located between the engine body and the radiator, and is sleeved on the outside of the engine fan, and the protection plate is arranged on the side of the air guide cover close to the engine body.

Images