Engine protection devices and construction machinery

Abstract

The present invention relates to the field of engineering machinery, and discloses an engine protection device and engineering machinery. The engine protection device comprises a cover body (10) and a bottom plate (20), wherein the cover body (10) comprises a housing cavity for accommodating an engine, and the bottom of the housing cavity has an opening, and the bottom plate (20) is movably mounted on the cover body (10) and can move between an open position for opening the opening and a closed position for closing the opening. The engine protection device of the present invention is provided with an opening at the bottom of the housing cavity of the cover body, and the bottom plate can move between an open position of the opening and a closed position for closing the opening, thereby simplifying the structure of the engine protection device. When repairing or inspecting the engine, workers do not need to remove the entire engine protection device, but only need to move the bottom plate to the open position of the opening, and then repair or inspect the engine through the opening at the bottom of the housing cavity, thereby reducing the difficulty of maintenance and improving the maintenance efficiency.

Description

Technical Field

[0001] The present invention relates to the field of engineering machinery, and in particular to an engine protection device and engineering machinery. Background Art

[0002] The engine guard is designed to protect the engine and is tailor-made for different vehicle models. The engine guard has the following functions. First, it prevents mud from covering the engine, which can lead to poor heat dissipation. Second, it prevents the engine from being damaged by bumpy roads and hard objects hitting and scratching the engine during driving. Third, it prevents the car from breaking down due to engine damage caused by external factors during driving. In addition, the engine guard also keeps the engine compartment clean, prevents road water and mud from entering the engine compartment, and prevents sand and hard objects rolled up by the tires from hitting the engine during driving.

[0003] However, in daily driving, the mud and sand rolled up by the wheels and the snow water brought up in rainy and snowy weather will cause corrosion to the exposed parts in the chassis. It will not affect the engine in a short time, but after working for a long time, it will still affect the service life of the engine. Therefore, it is necessary to regularly remove the engine protection device to inspect and repair the engine.

[0004] An existing engineering machinery engine protection device adopts the following method: Figure 1 Or a similar structure, which is an integral shield connected to the frame by fastening bolts, with maintenance windows on the front face and the lower ground. However, the existing bulldozer bottom shield has the following two disadvantages:

[0005] 1. When debris enters the lower guard and needs to be cleaned, it is necessary to loosen the fastening bolts and remove the entire engine protection device for cleaning, which is time-consuming and labor-intensive;

[0006] 2. The window size on the bottom of the bottom shield is small, making maintenance inconvenient. Summary of the invention

[0007] The purpose of the present invention is to overcome the problems of difficult disassembly and inconvenient maintenance in the prior art, and to provide an engine protection device which has the advantages of convenient disassembly and high maintenance efficiency.

[0008] In order to achieve the above-mentioned objectives, the present invention provides an engine protection device on one hand, which includes a cover body and a base plate, the cover body includes a accommodating cavity for accommodating the engine, the bottom of the accommodating cavity has an opening, and the base plate is movably mounted on the cover body and can move between an open position for opening the opening and a closed position for closing the opening.

[0009] Optionally, a groove-shaped slide is provided at the bottom of the cover body, and the bottom plate can slide in the groove-shaped slide to move between an open position for opening the opening and a closed position for closing the opening.

[0010] Optionally, the groove-type slide includes a vertical limiting portion for limiting left and right movement of the bottom plate, and a horizontal limiting portion for limiting upward movement of the bottom plate.

[0011] Optionally, a first mounting hole is formed at one end of the base plate, a fixed leg is correspondingly provided on the outer side of the cover body, a second mounting hole is provided on the fixed leg, and the base plate is locked in the closed position by a pin shaft extending through the first mounting hole and the second mounting hole.

[0012] Optionally, the pin includes a mounting portion and a pin ear plate coaxially located above the mounting portion, the pin ear plate is formed with an avoidance notch, a limit stop block is provided on the fixed leg, the limit stop block includes a limit portion extending above the pin ear plate, the pin can rotate between a stop position stopped by the limit portion and a staggered position vertically staggered relative to the limit portion, wherein in the staggered position, the avoidance notch faces the limit stop block.

[0013] Optionally, the cover body includes a left side plate and a right side plate which are spaced apart and arranged opposite to each other to form the accommodating cavity between the left side plate and the right side plate.

[0014] Optionally, one end of the left side plate and the right side plate is connected to a front plate, and the fixed legs are arranged on the outside of the front plate.

[0015] Optionally, a connecting plate is provided between the left side plate and the right side plate, the middle of the connecting plate is hollowed out to form the opening, and the groove-shaped slideway is provided on the connecting plate.

[0016] Optionally, the upper side of the connecting plate is provided with a wear-resistant layer for supporting the bottom plate.

[0017] Optionally, a plurality of reinforcing beams are arranged in the accommodating cavity on a side close to the bottom plate.

[0018] A second aspect of the present invention provides an engineering machine, comprising the above-mentioned engine protection device and an engine installed in the accommodating cavity of the engine protection device.

[0019] The engine protection device of the present invention is provided with an opening at the bottom of the cover body accommodating cavity, and the bottom plate can move between an open position of the opening and a closed position of closing the opening, thereby simplifying the structure of the engine protection device. When workers repair or inspect the engine, they do not need to remove the entire engine protection device, but only need to move the bottom plate to the open position of the opening, and then they can repair or inspect the engine through the opening at the bottom of the accommodating cavity, thereby reducing the difficulty of maintenance and improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The invention discloses an existing engine protection device structure of an engineering machinery;

[0021] Figure 2 It is a schematic diagram of the structure of the engine protection device after assembly in the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the cover body in the present invention;

[0023] Figure 4 is a schematic diagram of the bottom plate being pulled out from the cover body in the present invention;

[0024] Figure 5 It is the pin shaft in the locked state in the present invention;

[0025] Figure 6 It is the pin in the unlocked state in the present invention;

[0026] Figure 7 It is a structural schematic diagram of the grooved slideway in the present invention;

[0027] Figure 8 It is a schematic diagram of the pin in the present invention.

[0028] Description of Reference Numerals

[0029] 10-cover body; 11-connecting plate; 111-vertical limiting part; 112-horizontal limiting part; 113-wear-resistant layer; 12-left side plate; 13-right side plate; 14-front plate; 15-fixed support leg; 16-second mounting hole; 17-limit block; 18-reinforcement beam; 171-limiting part; 172-vertical part; 20-bottom plate; 21-pull ring; 22-first mounting hole; 30-pin shaft; 31-pin shaft ear plate; 32-mounting part. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0031] In the present invention, unless otherwise specified, directional words such as "upper, lower, left, right" generally refer to directions shown in the accompanying drawings. "Inside" and "outside" refer to inside and outside relative to the outline of each component itself.

[0032] like Figures 2 to 4 As shown, on one hand, the present invention provides an engine protection device, which includes a cover body 10 and a base plate 20. The cover body 10 includes a accommodating cavity for accommodating the engine, and the bottom of the accommodating cavity has an opening. The base plate 20 is movably mounted on the cover body 10 and can move between an open position for opening the opening and a closed position for closing the opening.

[0033] The engine protection device of the present invention is provided with an opening at the bottom of the accommodating cavity of the cover body 10, and the bottom plate 20 can move between an open position of the opening and a closed position of the opening, thereby simplifying the structure of the engine protection device. When workers repair or inspect the engine, they do not need to remove the entire engine protection device. They only need to move the bottom plate 20 to the open position of the opening, and then they can repair or inspect the engine through the opening at the bottom of the accommodating cavity, thereby reducing the difficulty of maintenance and improving maintenance efficiency.

[0034] like Figure 7 As shown, in one embodiment of the present invention, a grooved slide is provided at the bottom of the cover body 10, and the bottom plate 20 can slide in the grooved slide to move between an open position for opening the opening and a closed position for closing the opening.

[0035] Specifically, the grooved slideway includes a vertical limiting portion 111 for limiting the left-right movement of the bottom plate, and a horizontal limiting portion 112 for limiting the upward movement of the bottom plate.

[0036] In addition, if Figure 3 to Figure 4 As shown, in one embodiment of the present invention, a first mounting hole 22 is formed at one end of the base plate 20, a fixed leg 15 is correspondingly provided on the outer side of the cover body 10, a second mounting hole 16 is provided on the fixed leg 15, and the base plate 20 is locked in the closed position by a pin shaft 30 extending through the first mounting hole 22 and the second mounting hole 16. It can be understood that in a preferred embodiment of the present invention, the fixed leg 15 is arranged at the entrance position of the groove-type slide. In other embodiments of the present invention, in order to strengthen the connection strength between the base plate 20 and the cover body 10, the fixed leg 15 can be simultaneously arranged at the entrance position of the groove-type slide, as well as the exit position relative to the entrance position, and the number of the first mounting holes 22 is correspondingly increased on the base plate 20.

[0037] Specifically, Figure 5 , Figure 6 and Figure 8As shown, the pin shaft 30 includes a mounting portion 32 and a pin shaft ear plate 31 coaxially located above the mounting portion 32, the pin shaft ear plate 31 is formed with an avoidance notch, and a limit stopper 17 is provided on the fixed leg 15, the limit stopper 17 includes a limit portion 171 extending above the pin shaft ear plate 31, and the pin shaft 30 can rotate between a stop position stopped by the limit portion 171 and a staggered position vertically staggered relative to the limit portion 171, wherein in the staggered position, the avoidance notch faces the limit stopper 17. Further, in one embodiment of the present invention, the limit portion 171 is parallel to the upper surface of the pin shaft ear plate 31, and the limit stopper 17 also includes a vertical portion 172 connected to the limit portion 171 of the fixed leg 15, and the vertical portion 172 is provided on a side of the fixed leg 15 away from the second mounting hole 16. Preferably, the radial dimension of the pin lug 31 is greater than the radial dimension of the second mounting hole 16 , thereby preventing the pin 30 from falling out of the second mounting hole 16 .

[0038] Specifically, the stop position refers to Figure 5 As shown, at least part of the pin ear plate 31 is located directly below the limiting portion 171. When the pin 30 needs to be pulled out vertically from the second mounting hole 16, the limiting portion 171 interferes with the pulling out of the pin 30, thereby preventing the pin 30 from coming out of the second mounting hole 16 under vibration conditions, and limiting the vertical movement of the pin 30. When the pin 30 needs to be pulled out from the second mounting hole 16, it is only necessary to rotate the notch of the pin ear plate 31 toward the position facing the limiting block 17. With this arrangement, since there is a clearance fit between the mounting portion of the pin 30 and the second mounting hole 16 and the first mounting hole 22, there is no need to add other parts or use additional tools during assembly and disassembly. The pin 30 can be installed or disassembled by hand, which is simple and convenient to operate, saving time and effort. It can be understood that the notch can be of any shape, as long as the pin 30 can be smoothly pulled out of the second mounting hole 16 when the notch faces the limiting block 17. As shown in FIG. Figures 5 and 6 As shown, in a preferred embodiment of the present invention, the shape of the notch is arcuate.

[0039] In another embodiment of the present invention, the stopper 17 may be omitted, and the pin lug 31 is set to be a complete circle. A through hole is opened at a position where the mounting portion 32 is lower than the lower surface of the bottom plate 20, and a split pin is passed through the through hole, and the split pin is opened to prevent the pin 30 from falling out of the second mounting hole 16. In another embodiment of the present invention, the pin lug 31 may be cancelled, the upper part of the mounting portion is higher than the mounting plane of the fixed leg 15, and the lower part of the mounting portion 32 is lower than the lower surface of the bottom plate 20. A through hole is opened at the portion of the mounting portion higher than the mounting plane, and a split pin is passed through the through hole, and the split pin is opened. A through hole is opened at the portion of the mounting portion lower than the lower surface, and a split pin is passed through the through hole, and the split pin is opened. This arrangement can also prevent the pin 30 from falling off and falling out. When disassembling the pin 30, it is only necessary to pull the split pin out of the through hole.

[0040] like Figures 2 to 4 As shown, the cover body 10 includes a left plate 12 and a right plate 13 which are arranged opposite to each other at a distance to form the accommodating cavity between the left plate 12 and the right plate 13. Furthermore, one end of the left plate 12 and the right plate 13 is connected to a front plate 14, and the fixed legs 15 are arranged on the outside of the front plate 14. Specifically, in one embodiment of the present invention, a flange formed by bending a sheet metal is provided on the side of the left plate 12 and the right plate 13 away from the ground, and a mounting hole is provided on the flange, and the engine protection device is connected to other structural members through the mounting hole. Similarly, a flange for strengthening the front plate 14 is also provided on the side of the front plate 14 away from the ground.

[0041] Furthermore, in one embodiment of the present invention, a connecting plate 11 is provided between the left side plate 12 and the right side plate 13, and the grooved slide is provided on the connecting plate 11. Specifically, when repairing the engine, the bottom plate 20 needs to be pulled in and out of the grooved slide for many times. In order to reduce the resistance when pulling out the bottom plate 20, and reduce the friction between the bottom plate 20 and the mounting surface of the grooved slide when pulling out, a wear-resistant layer 113 for supporting the bottom plate 20 is provided on the upper side of the connecting plate 11. The wear-resistant layer 113 can be made of any appropriate material, such as engineering plastics such as polyoxymethylene, nylon, polytetrafluoroethylene, and polyimide.

[0042] It is understandable that the connecting plate 11, the left side plate 12, the right side plate 13 and the front plate 14 can be integrally formed, and formed by blanking a whole steel plate and bending the sheet metal. The connecting plate 11, the left side plate 12, the right side plate 13 and the front plate 14 can also be blanked separately, and the connecting plate 11 is welded between the bottom of the left side plate 12 and the right side plate 13, and the front plate 14 is welded to the side of the left side plate 12 and the right side plate 13. In other embodiments, the connecting plate 11, the left side plate 12 and the right side plate 13 can be integrally formed, that is, formed by blanking a whole steel plate and bending the sheet metal, and then the front plate 14 is welded to the side of the left side plate 12 and the right side plate 13; the front plate 14 and the connecting plate 11 can also be integrally formed, formed by blanking a whole steel plate and bending the sheet metal, and then the left side plate 12 and the right side plate 13 are welded to both sides of the front plate 14.

[0043] In addition, if Figure 4 As shown, a pull ring 21 for pulling out the bottom plate 20 is provided at one end of the bottom plate 20. Specifically, the pull ring 21 can be formed by bending a slender round tube and welded on the bottom plate 20. The pull ring 21 can also be a part of the bottom plate 20. A through hole is directly opened on one side of the bottom plate 20 close to the first mounting hole 22 to form the pull ring 21, and the bottom plate 20 is pulled out through the through hole.

[0044] In order to enhance the rigidity and strength of the cover body 10, in one embodiment of the present invention, a plurality of reinforcing beams 18 are provided in the accommodating cavity on one side close to the bottom plate 20. The reinforcing beams 18 include a plurality of reinforcing cross beams and a plurality of reinforcing longitudinal beams perpendicularly intersecting each other, the two sides of the reinforcing beams 18 are welded between the left side plate 12 and the right side plate 13, and the bottom surface of the reinforcing beams 18 is welded to the upper surface of the connecting plate 11. In other embodiments of the present invention, the reinforcing beams may be eliminated, and the rigidity and strength of the cover body 10 may also be enhanced by increasing the thickness of the connecting plate 11, the left side plate 12 and the right side plate 13, or by stamping or welding reinforcing ribs on the mounting plate 11, the left side plate 12 and the right side plate 13.

[0045] In addition, if Figure 3 As shown, the left side plate 12 is provided with an opening for installing an inspection window and a nut for fixing the inspection window. It is understandable that inspection windows can also be provided on the front plate 14 and the right side plate 13, through which the parts in the engine protection device can be repaired and inspected without completely removing the engine guard, thereby improving maintenance efficiency. In addition, a towing hook is provided on the front plate 14, and when the engineering machinery fails, the rescue vehicle hangs a towing rope through the towing hook to rescue the engineering machinery.

[0046] The second aspect of the present invention provides an engineering machine, the engineering machine comprising the above-mentioned engine protection device and an engine installed in the accommodating cavity of the engine protection device. When maintaining the engine oil pan and hydraulic oil pipe of the engineering machine, it is only necessary to open the bottom plate 20 to the open position of the opening, and the engine oil pan and hydraulic oil pipe can be repaired and inspected through the opening at the bottom of the cover body 10, which reduces the difficulty of engine maintenance and improves maintenance efficiency. Specifically, the engineering machine can be a bulldozer.

[0047] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any appropriate manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. An engine protection device, characterized in that: The engine protection device comprises a cover body (10) and a bottom plate (20); the cover body (10) comprises a receiving cavity for receiving the engine, the bottom of the receiving cavity has an opening, and the bottom plate (20) is movably mounted on the cover body (10) and is movable between an open position for opening the opening and a closed position for closing the opening; A groove-shaped slideway is provided at the bottom of the cover body (10), and the bottom plate (20) can slide in the groove-shaped slideway to move between an open position for opening the opening and a closed position for closing the opening; A first mounting hole (22) is formed at one end of the bottom plate (20), a fixed leg (15) is correspondingly provided on the outer side of the cover body (10), a second mounting hole (16) is provided on the fixed leg (15), and the bottom plate (20) is locked in the closed position by a pin shaft (30) extending through the first mounting hole (22) and the second mounting hole (16); and The pin shaft (30) comprises a mounting portion (32) and a pin shaft ear plate (31) coaxially located above the mounting portion (32), the pin shaft ear plate (31) being formed with an avoidance notch, a limit stopper (17) being provided on the fixed leg (15), the limit stopper (17) comprising a limit portion (171) extending above the pin shaft ear plate (31), the pin shaft (30) being capable of rotating between a stop position stopped by the limit portion (171) and a staggered position vertically staggered relative to the limit portion (171), wherein at the staggered position, the avoidance notch faces the limit stopper (17); A plurality of reinforcing beams (18) are arranged in the accommodating cavity on a side close to the bottom plate (20).

2. The engine protection device according to claim 1, characterized in that: The grooved slideway comprises a vertical limiting portion (111) for limiting the left-right movement of the bottom plate (20), and a horizontal limiting portion (112) for limiting the upward movement of the bottom plate (20).

3. The engine protection device according to claim 1, characterized in that: The cover body (10) comprises a left side plate (12) and a right side plate (13) which are arranged opposite to each other at a distance so as to form the accommodating cavity between the left side plate (12) and the right side plate (13).

4. The engine protection device according to claim 3, characterized in that: One end of the left side plate (12) and the right side plate (13) is connected to a front plate (14), and the fixed legs (15) are arranged outside the front plate (14).

5. The engine protection device according to claim 4, characterized in that: A connecting plate (11) is provided between the left side plate (12) and the right side plate (13), the middle of the connecting plate (11) is hollowed out to form the opening, and the grooved slideway is provided on the connecting plate (11).

6. The engine protection device according to claim 5, characterized in that: The upper side of the connecting plate (11) is provided with a wear-resistant layer (113) for supporting the bottom plate (20).

7. An engineering machine, characterized in that: It comprises an engine protection device according to any one of claims 1 to 6 and an engine installed in the accommodating cavity of the engine protection device.

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