Engine protection device

Abstract

The utility model discloses an engine protection device, including excavator body, engine cabin and engine body, engine cabin installs at the top of excavator body, engine body installs in the inside of engine cabin, and the utility model relates to engine technical field. This engine protection device, through setting up the cooling fan in the inside of engine cabin, promotes engine cabin inside to be able to actively carry out air acceleration flow, provides the relatively stable heat dissipation for engine body, improves the heat dissipation effect, secondly sets up the rotation closing mechanism, the bottom seal mechanism and automatic closing drive mechanism on the engine cabin, so that the device still can through above -mentioned cooperation, provides the completely closed protection to engine body, avoids engine body to idle dusting, causes dust to adhere engine body after, influences the heat dissipation effect during the subsequent use of engine body.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, specifically to an engine protection device. Background Technology

[0002] An engine is a device that converts some form of energy into mechanical energy, primarily used to generate power to drive other machinery. Based on the type of fuel used, engines can be classified as gasoline engines, diesel engines, and gas-fueled engines. Diesel engines, with their high compression ratio (typically 30%–50% higher than gasoline engines) and compression ignition, have higher combustion efficiency and can output strong torque at low speeds, making them suitable for heavy-duty and hill-climbing applications. They are widely used in construction machinery and other fields, such as excavators.

[0003] To facilitate heat exchange between the engine and the external environment, excavator bodies typically have grille baffles installed at the top and bottom of the installation compartment to allow contact with outside air. While this method can achieve heat exchange, the airflow is difficult to control, resulting in less than ideal heat exchange performance. Therefore, an engine protection device is proposed to address this problem. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides an engine protection device that solves the problem that the heat dissipation effect is generally poor when the engine is naturally cooled by the grille baffle in the cabin.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an engine protection device, comprising an excavator body, an engine compartment, and an engine body. The engine compartment is installed on the top of the excavator body, and the engine body is installed inside the engine compartment. A cooling fan is installed inside the engine compartment. A ring cover is rotatably mounted on the top of the engine compartment. Several first main air intake filters are provided on one side of the top of the ring cover, and several first secondary air intake filters are provided on the other side of the top of the ring cover. Several air outlets are provided at the bottom of the engine compartment. A rotary sealing mechanism is provided on the top of the engine compartment, and a bottom sealing mechanism is provided at the bottom of the engine compartment. An automatic sealing drive mechanism for use with the rotary sealing mechanism and the bottom sealing mechanism is provided on the surface of the engine compartment. Assembly reserved openings for use with the engine body are provided on both sides of the engine compartment.

[0006] Preferably, the rotary sealing mechanism includes a rotary sealing plate, which is rotatably disposed on the top of the annular cover. A plurality of second auxiliary air inlet filters, matching the first auxiliary air inlet filter, are provided on one side of the top of the rotary sealing plate. A plurality of second main air inlet filters, matching the first main air inlet filter, are provided on the other side of the top of the rotary sealing plate. A servo motor is fixedly connected to the top of the engine compartment via a bracket. The output shaft of the servo motor is fixedly connected to a rotating shaft via a coupling, and one end of the rotating shaft extends into the interior of the engine compartment. A first pulley is fixedly connected to the surface of the rotating shaft. An annular groove is provided on the outer surface of the rotary sealing plate. A first belt is drivingly connected between the annular groove and the first pulley. A plurality of toothed limit blocks are fixedly connected at equal intervals around the surface of the annular cover. A gear meshing with the toothed limit blocks is fixedly connected to the end of the rotating shaft extending into the engine compartment.

[0007] Preferably, the bottom sealing mechanism includes two assembly slots, which are respectively located on both sides of the bottom of the engine compartment. Guide slots are provided on the front and rear sides of the inner cavity of the assembly slots. Guide blocks are slidably connected inside the guide slots. A bottom sealing plate for use with the rotating shaft is fixedly connected between the two guide blocks on the same side. Several air guide holes are provided on the top of the bottom sealing plate, and the air guide holes and the air outlet holes are staggered.

[0008] Preferably, the automatic sealing drive mechanism includes a mounting frame, which is slidably disposed on the front side of the engine compartment. A connecting rod is fixedly connected to the bottom of the bottom sealing plate via a bracket. A connecting plate is rotatably connected between the connecting rod and the mounting frame. A threaded rod is rotatably disposed on the front side of the engine compartment. A second pulley is fixedly connected to both the surface of the threaded rod and the surface of the rotating shaft. A second belt is drivingly connected between the two second pulleys. A threaded sleeve is threadedly connected to the surface of the threaded rod. Pressing brackets for use with the mounting frame are fixedly connected to both sides of the threaded sleeve.

[0009] Preferably, a limiting groove is provided on the front side of the engine compartment, a limiting slider is slidably connected inside the limiting groove, and the front side of the limiting slider is fixedly connected to the rear side of the mounting frame. A return spring is fixedly connected between the limiting groove and the limiting slider.

[0010] Preferably, a slide plate is fixedly connected to the front side of the engine compartment, and a sliding block is slidably connected inside the slide plate, with the front side of the sliding block fixedly connected to the rear side of the threaded sleeve.

[0011] Beneficial effects This invention provides an engine protection device. Compared with existing technologies, it has the following advantages: By installing a cooling fan inside the engine compartment, this invention promotes active and accelerated airflow within the engine compartment, providing more stable heat dissipation for the engine body and improving the heat dissipation effect. Secondly, by installing a rotary sealing mechanism, a bottom sealing mechanism, and an automatic sealing drive mechanism on the engine compartment, the device can also provide completely sealed protection for the engine body through the above-mentioned cooperation, preventing dust from accumulating on the engine body when idle, which would affect the heat dissipation effect of the engine body during subsequent use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a schematic diagram of the external structure of this utility model from another perspective; Figure 3 This is a schematic diagram of the internal structure of the engine compartment of this utility model; Figure 4 This is a schematic diagram of the bottom sealing mechanism structure of this utility model; Figure 5 This is a schematic diagram of the air outlet and air guide hole structure of this utility model; Figure 6 This is a schematic diagram of the automatic sealing drive mechanism structure of this utility model; Figure 7 This is a schematic diagram of the rotating closing mechanism structure of this utility model; Figure 8 This is an unfolded view of the rotary sealing plate and ring cover structure of this utility model; Figure 9 This is a schematic diagram of the closed state of the rotary sealing plate and ring cover structure of this utility model; Figure 10 This is a schematic diagram of the ventilation state of the rotary sealing plate and ring cover structure of this utility model.

[0013] In the diagram: 1. Excavator body; 2. Engine compartment; 3. Engine body; 4. Cooling fan; 5. Ring cover; 6. First main air intake filter; 7. First secondary air intake filter; 8. Air outlet; 9. Swivel sealing mechanism; 901. Swivel sealing plate; 902. Second secondary air intake filter; 903. Second main air intake filter; 904. Servo motor; 905. Rotating shaft; 906. First pulley; 907. Ring groove; 908. First belt; 909. Tooth limit block; 910. Gear; 10. Bottom Sealing mechanism; 100. Assembly slot; 101. Guide slot; 102. Guide block; 103. Bottom sealing plate; 104. Air guide hole; 11. Automatic sealing drive mechanism; 111. Mounting frame; 112. Connecting rod; 113. Connecting plate; 114. Threaded rod; 115. Second pulley; 116. Second belt; 117. Threaded sleeve; 118. Pressing frame; 12. Limiting slide groove; 13. Limiting slider; 14. Return spring; 15. Assembly reserved opening; 16. Slide plate; 17. Sliding block. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0015] Please see Figure 1-10 This utility model provides a technical solution: an engine protection device, including an excavator body 1, an engine compartment 2 and an engine body 3. The engine compartment 2 is installed on the top of the excavator body 1, and the engine body 3 is installed inside the engine compartment 2. Both sides of the engine compartment 2 are provided with assembly reserved openings 15 for use with the engine body 3.

[0016] Furthermore, to facilitate stable heat dissipation, a cooling fan 4 is installed inside the engine compartment 2, and a ring cover 5 is rotatably installed on the top of the engine compartment 2. Several first main air intake filter holes 6 are opened on one side of the top of the ring cover 5, and several first secondary air intake filter holes 7 are opened on the other side of the top of the ring cover 5. Several air outlet holes 8 are opened at the bottom of the engine compartment 2.

[0017] Furthermore, to facilitate sealing the air intake direction during periods of inactivity, a sealing mechanism 9 is installed on the top of the engine compartment 2. The sealing mechanism 9 includes a sealing plate 901, which is rotatably mounted on the top of the ring cover 5. One side of the top of the sealing plate 901 has several second secondary air intake filters 902 that correspond to the first secondary air intake filter 7, and the other side of the top of the sealing plate 901 has several second main air intake filters 903 that correspond to the first main air intake filter 6. A servo motor 904 is fixedly connected to the top of the engine compartment 2 via a bracket. The output shaft of the motor 904 is fixedly connected to the rotating shaft 905 via a coupling, and one end of the rotating shaft 905 extends into the interior of the engine compartment 2. A first pulley 906 is fixedly connected to the surface of the rotating shaft 905. An annular groove 907 is provided on the outer surface of the rotary sealing plate 901. A first belt 908 is connected between the annular groove 907 and the first pulley 906. Several toothed limit blocks 909 are fixedly connected at equal intervals around the surface of the ring cover 5. A gear 910 that meshes with the toothed limit blocks 909 is fixedly connected to the end of the rotating shaft 905 that extends into the engine compartment 2.

[0018] Furthermore, to facilitate the sealing of the air outlet direction, a bottom sealing mechanism 10 is provided at the bottom of the engine compartment 2. The bottom sealing mechanism 10 includes an assembly slot 100. There are two assembly slots 100, which are respectively opened on both sides of the bottom of the engine compartment 2. Guide slots 101 are opened on the front and rear sides of the inner cavity of the assembly slot 100. Guide blocks 102 are slidably connected inside the guide slots 101. A bottom sealing plate 103, which is used in conjunction with the rotating shaft 905, is fixedly connected between the two guide blocks 102 on the same side. Several air guide holes 104 are opened on the top of the bottom sealing plate 103, and the air guide holes 104 are staggered with the air outlet 8.

[0019] Furthermore, to facilitate automatic linkage sealing of the air inlet and outlet, the surface of the engine compartment 2 is provided with an automatic sealing drive mechanism 11 that is used in conjunction with the rotary sealing mechanism 9 and the bottom sealing mechanism 10. The automatic sealing drive mechanism 11 includes a mounting frame 111, which is slidably disposed on the front side of the engine compartment 2. The bottom of the bottom sealing plate 103 is fixedly connected to a connecting rod 112 via a bracket. The connecting rod 112 and the mounting frame 111 are rotatably connected to a connecting plate 113. A threaded rod 114 is rotatably disposed on the front side of the engine compartment 2. The surface of the threaded rod 114 and the surface of the rotating shaft 905 are both fixedly connected to a second pulley 115. A second belt 116 is connected between the two second pulleys 115. A threaded sleeve 117 is threadedly connected to the surface of the threaded rod 114. Pressing brackets 118 that are used in conjunction with the mounting frame 111 are fixedly connected to both sides of the threaded sleeve 117. A limiting groove 12 is provided on the front side of the engine compartment 2. A limiting slider 13 is slidably connected inside the limiting groove 12. The front side of the limiting slider 13 is fixedly connected to the rear side of the mounting frame 111. A return spring 14 is fixedly connected between the limiting groove 12 and the limiting slider 13. A sliding plate 16 is fixedly connected to the front side of the engine compartment 2. A sliding block 17 is slidably connected inside the sliding plate 16. The front side of the sliding block 17 is fixedly connected to the rear side of the threaded sleeve 117.

[0020] When cooling the engine body 3, the servo motor 904 is started. The servo motor 904 drives the rotating shaft 905 to rotate. The rotating shaft 905 drives the first pulley 906 and the gear 910 to rotate. The first pulley 906 rotates and engages with the annular groove 907 and the first belt 908 for transmission until the first belt 908 drives the rotary sealing plate 901 to rotate to ninety degrees. The gear 910 rotates and meshes with the tooth limit block 909, causing the annular cover 5 to finally rotate in the opposite direction to the rotary sealing plate 901 to ninety degrees. After the annular cover 5 and the rotary sealing plate 901 rotate in the opposite direction by ninety degrees, the first secondary air intake filter 7 in the annular cover 5 will overlap with the second secondary air intake filter 902 in the rotary sealing plate 901 to form an air intake passage. Correspondingly, the first main air intake filter 6 will overlap with the second main air intake filter 903 to form an air intake passage. When the servo motor 904 drives the rotating shaft 905 to rotate, the rotating shaft 905 synchronously drives the second pulley 115 to rotate. The second pulley 115 synchronously engages with the adjacent second pulley 115 and the second belt 116, causing the threaded rod 114 to rotate synchronously. The threaded rod 114 rotates and its surface threaded sleeve 117 descends. The threaded sleeve 117 drives the pressing frame 118 to descend. The descending pressing frame 118 will squeeze the mounting frame 111. The mounting frame 111 is forced to push the connecting plate 113 to expand the rotation angle. The connecting plate 113 pushes the connecting rod 112 and the bottom sealing plate 103 to move laterally through the rotation angle. The lateral movement of the bottom sealing plate 103 will cause the air guide hole 104 to overlap with the air outlet hole 8, forming an air outlet through hole. When the enclosure is idle, the servo motor 904 is reversed to cause the rotating shaft 905 to rotate in the opposite direction for a fixed number of turns. After the rotating shaft 905 rotates in reverse, the ring cover 5 and the rotary sealing plate 901 are reset to their original positions. That is, the first main air inlet filter 6 and the second auxiliary air inlet filter 902 are mutually blocked, and the first auxiliary air inlet filter 7 and the second main air inlet filter 903 are mutually blocked to complete the enclosure. When the servo motor 904 reverses, the threaded sleeve 117 rises and resets in succession. The rise of the threaded sleeve 117 drives the pressing frame 118 to rise. The pressing frame 118 is lifted and releases the pressure on the mounting frame 111. After the mounting frame 111 loses pressure, it is reset by the tension of the reset spring 14. The reset of the mounting frame 111 drags the connecting plate 113 to restore the original angle. The reset of the connecting plate 113 pulls the bottom sealing plate 103 to move laterally and reset, causing the air guide hole 104 on the surface of the bottom sealing plate 103 to continue to form a misaligned seal with the air outlet hole 8.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An engine protection device, comprising an excavator body (1), an engine compartment (2), and an engine body (3), wherein the engine compartment (2) is installed on the top of the excavator body (1), and the engine body (3) is installed inside the engine compartment (2), characterized in that: The engine compartment (2) is equipped with a cooling fan (4). The top of the engine compartment (2) is rotatably equipped with a ring cover (5). A number of first main air intake filter holes (6) are opened on one side of the top of the ring cover (5). A number of first secondary air intake filter holes (7) are opened on the other side of the top of the ring cover (5). A number of air outlet holes (8) are opened at the bottom of the engine compartment (2). A rotating closing mechanism (9) is provided at the top of the engine compartment (2). A bottom sealing mechanism (10) is provided at the bottom of the engine compartment (2). An automatic sealing drive mechanism (11) is provided on the surface of the engine compartment (2) in conjunction with the rotating closing mechanism (9) and the bottom sealing mechanism (10). Both sides of the engine compartment (2) are provided with assembly reserved openings (15) in conjunction with the engine body (3).

2. The engine protection device according to claim 1, characterized in that: The rotary sealing mechanism (9) includes a rotary sealing plate (901), which is rotatably mounted on the top of the ring cover (5). One side of the top of the rotary sealing plate (901) has several second auxiliary air inlet filters (902) that are used in conjunction with the first auxiliary air inlet filter (7). The other side of the top of the rotary sealing plate (901) has several second main air inlet filters (903) that are used in conjunction with the first main air inlet filter (6). A servo motor (904) is fixedly connected to the top of the engine compartment (2) via a bracket. The output shaft of the servo motor (904) is fixedly connected to a rotating shaft (903) via a coupling. 05), and one end of the rotating shaft (905) extends into the interior of the engine compartment (2). A first pulley (906) is fixedly connected to the surface of the rotating shaft (905). An annular groove (907) is opened on the outer surface of the rotary sealing plate (901). A first belt (908) is connected between the annular groove (907) and the first pulley (906). Several tooth limit blocks (909) are fixedly connected around the surface of the ring cover (5) at equal intervals. A gear (910) that meshes with the tooth limit block (909) is fixedly connected to one end of the rotating shaft (905) that extends into the interior of the engine compartment (2).

3. An engine protection device according to claim 2, characterized in that: The bottom sealing mechanism (10) includes an assembly slot (100). There are two assembly slots (100), and the two assembly slots (100) are respectively opened on both sides of the bottom of the engine compartment (2). The front and rear sides of the inner cavity of the assembly slot (100) are provided with guide slots (101). The guide slots (101) are slidably connected to the inside of the guide slots (101). The two guide blocks (102) on the same side are fixedly connected to a bottom sealing plate (103) that is used in conjunction with the rotating shaft (905). The top of the bottom sealing plate (103) is provided with several air guide holes (104), and the air guide holes (104) and the air outlet (8) are staggered.

4. An engine protection device according to claim 3, characterized in that: The automatic sealing drive mechanism (11) includes a mounting frame (111), which is slidably disposed on the front side of the engine compartment (2). The bottom of the bottom sealing plate (103) is fixedly connected to a connecting rod (112) by a bracket. A connecting plate (113) is rotatably connected between the connecting rod (112) and the mounting frame (111). A threaded rod (114) is rotatably disposed on the front side of the engine compartment (2). A second pulley (115) is fixedly connected to the surface of the threaded rod (114) and the surface of the rotating shaft (905). A second belt (116) is connected between the two second pulleys (115). A threaded sleeve (117) is threadedly connected to the surface of the threaded rod (114). A pressing frame (118) for use with the mounting frame (111) is fixedly connected to both sides of the threaded sleeve (117).

5. An engine protection device according to claim 4, characterized in that: A limiting groove (12) is provided on the front side of the engine compartment (2). A limiting slider (13) is slidably connected inside the limiting groove (12). The front side of the limiting slider (13) is fixedly connected to the rear side of the mounting frame (111). A return spring (14) is fixedly connected between the limiting groove (12) and the limiting slider (13).

6. An engine protection device according to claim 4, characterized in that: The front side of the engine compartment (2) is fixedly connected to a slide plate (16), and a sliding block (17) is slidably connected inside the slide plate (16), and the front side of the sliding block (17) is fixedly connected to the rear side of the threaded sleeve (117).

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