Engine cover for a bulldozer

Abstract

The utility model is suitable for bulldozer technical field provides a bulldozer engine bonnet, upper bonnet subassembly, side bonnet subassembly and the fixed subassembly of connecting upper bonnet subassembly and side bonnet subassembly, the fixed subassembly includes transition connecting part, the first fixed part is arranged in one side of transition connecting part, the other side of transition connecting part is provided with connecting part, upper bonnet subassembly sets up between first fixed part and transition connecting part, first fixed part includes fixed bolt, the output of fixed bolt is in proper order with washer, metal bushing, is set with rubber buffer pad on the outer wall of metal bushing, prevents the pre -tightening force of fixed bolt and crushes rubber buffer pad, the setting avoids fixed bolt and mounting piece direct contact of washer, prevents loosening, and rubber buffer pad absorbs the vibration generated in the working process, and first fixed part fixes upper bonnet subassembly, reaches the effect of increasing connection reliability.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and more specifically, it relates to an engine hood for a bulldozer. Background Technology

[0002] Bulldozer dust covers are essential accessories used to protect critical components of bulldozers. Their main function is to prevent dust and impurities from entering key areas such as the engine compartment and transmission system, thereby reducing wear and corrosion and extending service life. They are typically made of high-strength, corrosion-resistant materials, such as aluminum alloys or engineering plastics, providing excellent protection. The dust covers are often rationally designed, with some also featuring ventilation holes or air vents to meet the needs of bulldozers operating in harsh environments.

[0003] Currently, the upper edge of the bulldozer engine side cover is directly bolted to the engine cover via a bent structure. During the operation of the machine, the engine cover itself is one of the main vibration transmission paths, and this vibration will inevitably be transmitted to the side cover that is fixed to it. The bending point of the side cover itself and the influence of the manufacturing process make it a weak and stress-concentrated area, which is prone to cracking due to vibration fatigue.

[0004] Therefore, the direct bolt connection method results in poor reliability of the side cover, greatly reduces the service life of the side cover, damages the sealing of the engine compartment, leads to a decrease in protective function, and increases the operating costs of the company and customers due to frequent maintenance and replacement of cracked side covers.

[0005] To address the above problems, this utility model proposes an engine hood for bulldozers. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an engine hood for bulldozers.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A bulldozer engine hood includes an upper hood assembly, a side hood assembly, and a fixing assembly connecting the upper hood assembly and the side hood assembly. The fixing assembly includes a transition connecting member, a first fixing member is provided on one side of the transition connecting member, and a connecting member is provided on the other side of the transition connecting member. The upper hood assembly is disposed between the first fixing member and the transition connecting member. The first fixing member includes a fixing bolt, and a washer and a metal bushing are sequentially fitted on the output end of the fixing bolt. A rubber buffer pad is fitted on the outer wall of the metal bushing.

[0009] The structure of the second fixing component is the same as that of the first fixing component. A second fixing component is also provided on one side of the transition connecting component, and a first side cover fixing member and a second side cover fixing member are also provided on the other side of the transition connecting component. One end of the first fixing component and the second fixing component penetrates the transition connecting component and is fixed to the connecting component. The output ends of the first side cover fixing member and the second side cover fixing member penetrate the transition connecting component and are connected to the fixing member.

[0010] The present invention is further configured such that: the transition connecting component includes a transition connecting plate, and a first connecting hole is symmetrically arranged on the upper part of the transition connecting plate. A second connecting hole is symmetrically arranged on the lower part of the transition connecting plate.

[0011] The present invention is further configured such that: the connecting component includes a threaded connecting plate, and the threaded connecting plate is symmetrically provided with threaded mounting holes.

[0012] The present invention is further configured such that the output end of the fixing bolt passes through the transition connecting plate and is fitted with the threaded mounting hole for installation.

[0013] The present invention is further configured such that: the first side cover fixing member includes a side cover bolt, and a side cover gasket is sleeved on the side cover bolt; the structure of the second side cover fixing member is the same as that of the second side cover fixing member; and the first side cover fixing member and the second side cover fixing member are fitted with two second connecting holes.

[0014] The present invention is further configured such that: the upper cover assembly includes an upper cover body, and fixing plates are symmetrically installed on both sides of the upper cover body, and the fixing plates are respectively provided with a first mounting hole and a second mounting hole.

[0015] The present invention is further configured such that: the first fixing component and the second fixing component are fitted with the first mounting hole and the second mounting hole, and the output end of the fixing bolt is fitted with a washer, passes through the first mounting hole, and is then fitted with a metal bushing.

[0016] The present invention is further configured such that: the side cover assembly includes a side cover body, a side cover fixing plate is installed on the side cover body, a first positioning hole and a second positioning hole are symmetrically arranged on the side cover fixing plate, the first side cover fixing member and the second side cover fixing member are fitted with the first positioning hole and the second positioning hole, and the output end of the side cover bolt is fitted with a side cover gasket and then penetrates the second connecting hole and is fixedly installed with the second positioning hole.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] By fitting a rubber buffer pad on the outer wall of the metal bushing, the preload of the fixing bolts is prevented from crushing the rubber buffer pad. The pad is designed to prevent the fixing bolts from directly contacting the mounting parts, thus preventing loosening. The rubber buffer pad absorbs the vibration generated during operation. The first fixing component fixes the upper cover assembly, thereby increasing the reliability of the connection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a bulldozer engine hood according to the present invention.

[0020] Figure 2 for Figure 1 A schematic diagram of the explosion structure.

[0021] Figure 3 for Figure 2 A schematic diagram of the overall structure of the fixed components.

[0022] Figure 4 for Figure 3 A schematic diagram of the explosion structure.

[0023] Figure 5 for Figure 4 A schematic diagram of the explosion structure.

[0024] Figure 6 for Figure 2 A schematic diagram of the overall structure of the middle side cover assembly.

[0025] Explanation of reference numerals in the attached drawings: 1. Upper cover assembly; 11. Upper cover body; 12. Fixing plate; 13. First mounting hole; 14. Second mounting hole;

[0026] 2. Fixing components; 21. First fixing component; 211. Fixing bolt; 212. Washer; 213. Rubber buffer pad; 214. Metal bushing; 22. Second fixing component; 23. Transition connection component; 231. Transition connection plate; 232. First connection hole; 233. Second connection hole; 24. Connecting component; 241. Threaded connection plate; 242. Threaded mounting hole; 25. First side cover fixing component; 251. Side cover bolt; 252. Side cover washer; 26. Second side cover fixing component;

[0027] 3. Side cover assembly; 31. Side cover body; 32. Side cover fixing plate; 33. First positioning hole; 34. Second positioning hole. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] Please see Figure 1-6 The present invention provides the following technical solution:

[0031] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] See Figures 1-5 A bulldozer engine hood includes an upper hood assembly 1 and a fixing assembly 2. Side hood assemblies 3 are symmetrically arranged on the lower sides of the upper hood assembly 1. The fixing assembly 2 is symmetrically arranged between the upper hood assembly 1 and the side hood assemblies 3, and the upper hood assembly 1 and the side hood assemblies 3 are fixedly connected by the fixing assembly 2. The fixing assembly 2 includes a transition connecting component 23. A first fixing component 21 and a second fixing component 22 are arranged on one side of the transition connecting component 23, and a connecting component 24, a first side hood fixing component 25, and a second side hood fixing component 26 are arranged on the other side of the transition connecting component 23. One end of the first fixing component 21 and the second fixing component 22 penetrates the transition connecting component 23 and is fixed to the connecting component 24. The output ends of the first side hood fixing component 25 and the second side hood fixing component 26 penetrate the transition connecting component 23 and are connected to the fixing component.

[0033] The upper cover assembly 1 is used to prevent dust from the top of the bulldozer. The two side cover assemblies 3 are used to prevent dust from the sides of the upper cover assembly 1. They work together to prevent dust from the bulldozer. The two side cover assemblies 3 are fixed to the two sides of the upper cover assembly 1 by two fixing components 2 respectively.

[0034] The transition connecting component 23 is used to support and fix the positions of the first fixing component 21 and the second fixing component 22. The output ends of the first fixing component 21 and the second fixing component 22 pass through the transition connecting component 23 and are fixed to the connecting component 24. Fixing members can be sleeved on the output ends of the first fixing component 21 and the second fixing component 22. After being sleeved, they pass through the transition connecting component 23 and are fixed to the connecting component 24, forming a stable installation of the fixing members. The transition connecting component 23 also provides an installation position for the first side cover fixing member 25 and the second side cover fixing member 26. After the fixing members are installed on the first fixing component 21 and the second fixing component 22, other fixing members can be fixed below the transition connecting component 23 through the first side cover fixing member 25. The output ends of the first side cover fixing member 25 and the second side cover fixing member 26 penetrate below the transition connecting component 23. A threaded fixing member is provided on one side of the transition connecting component 23. The output ends of the first side cover fixing member 25 and the second side cover fixing member 26 are threadedly installed with the fixing member, thereby cooperating and installing the two fixing members to increase the reliability of the connection.

[0035] See Figure 4 The first fixing component 21 includes a fixing bolt 211. The output end of the fixing bolt 211 is fitted with a gasket 212 and a metal bushing 214 in sequence. A rubber buffer pad 213 is fitted on the outer wall of the metal bushing 214. The structure of the second fixing component 22 is the same as that of the first fixing component 21.

[0036] By providing a rubber buffer pad 213 on the outer wall of the metal bushing 214, the pre-tightening force of the fixing bolt 211 is prevented from crushing the rubber buffer pad 213. The setting of the gasket 212 avoids direct contact between the fixing bolt 211 and the mounting part, preventing loosening. The fixing part is fixed from two points by the first fixing part 21 and the second fixing part 22.

[0037] The transition connection component 23 includes a transition connection plate 231, with a first connection hole 232 symmetrically arranged above the transition connection plate 231 and a second connection hole 233 symmetrically arranged below the transition connection plate 231.

[0038] The transition connecting plate 231 provides installation positions for the first fixing component 21, the second fixing component 22, the first side cover fixing component 25, and the second side cover fixing component 26. One fixing component can be fixed to the transition connecting plate 231 by cooperating with the first fixing component 21 and the second fixing component 22 through the first connecting hole 232. Another fixing component can be fixed to the transition connecting plate 231 by cooperating with the connecting component 24 and the first side cover fixing component 25 through the second connecting hole 233.

[0039] The connecting component 24 includes a threaded connecting plate 241, on which threaded mounting holes 242 are symmetrically arranged. The output end of the fixing bolt 211 passes through the transition connecting plate 231 and is installed in conjunction with the threaded mounting holes 242.

[0040] Both threaded mounting holes 242 are provided with threads that fit into the first fixing component 21 and the second fixing component 22. The first fixing component 21 and the second fixing component 22 cooperate with the two threaded mounting holes 242 to fix them to the threaded connecting plate 241, thus forming a stable installation of the fastener.

[0041] The first side cover fixing member 25 includes a side cover bolt 251, and a side cover gasket 252 is fitted on the side cover bolt 251. The structure of the second side cover fixing member 26 is the same as that of the second side cover fixing member 26. The first side cover fixing member 25 and the second side cover fixing member 26 are fitted with two second connecting holes 233.

[0042] After the side cover bolt 251 is fitted with a side cover washer 252, it passes through the second connecting hole 233 and is threadedly installed with the fastener. The first side cover fastener 25 and the second side cover fastener 26 both pass through the second connecting hole 233. The fastener is fixed at two points by the first side cover fastener 25 and the second side cover fastener 26, so as to achieve the effect of installing another fastener on the transition connecting plate 231.

[0043] The upper cover assembly 1 includes an upper cover body 11, and fixing plates 12 are symmetrically installed on both sides of the upper cover body 11. The fixing plates 12 are respectively provided with a first mounting hole 13 and a second mounting hole 14.

[0044] The upper cover body 11 provides dust protection from the top, and two fixing plates 12 are used to fix the two side cover assemblies 3 respectively. The first mounting hole 13 and the second mounting hole 14 on the two fixing plates 12 cooperate with the fixing assembly 2 to fix the two side cover assemblies 3.

[0045] The first fixing component 21 and the second fixing component 22 are fitted with the first mounting hole 13 and the second mounting hole 14. After the output end of the fixing bolt 211 is fitted with a gasket 212, it passes through the first mounting hole 13 and is then fitted with a metal bushing 214.

[0046] The first fixing component 21 engages with the first mounting hole 13, and the second fixing component 22 engages with the second mounting hole 14, thereby fixing the two fixing plates 12 onto the transition connecting component 23 respectively.

[0047] See Figure 6The side cover assembly 3 includes a side cover body 31, a side cover fixing plate 32 is mounted on the side cover body 31, and a first positioning hole 33 and a second positioning hole 34 are symmetrically arranged on the side cover fixing plate 32. The first side cover fixing member 25 and the second side cover fixing member 26 are fitted with the first positioning hole 33 and the second positioning hole 34. After the output end of the side cover bolt 251 is fitted with the side cover gasket 252, it penetrates the second connecting hole 233 and is fixedly installed with the second positioning hole 34.

[0048] By welding a fixing plate 32 to the inside of the side cover body 31, the overall bending edge of the traditional side cover body 31 is eliminated, thus achieving the effect of eliminating bending stress concentration points.

[0049] The side cover body 31 protects the bulldozer from the side. The first side cover fixing member 25 fits into the first positioning hole 33, and the connecting member 24 fits into the second positioning hole 34, thereby fixing the side cover body 31 to the transition connecting plate 231. The side cover body 31 is then fixed from two points by the first side cover fixing member 25 and the second side cover fixing member 26.

[0050] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A bulldozer engine hood, characterized in that: The assembly includes an upper cover assembly (1), a side cover assembly (3), and a fixing assembly (2) connecting the upper cover assembly (1) and the side cover assembly (3). The fixing assembly (2) includes a transition connecting component (23). A first fixing component (21) is provided on one side of the transition connecting component (23), and a connecting component (24) is provided on the other side of the transition connecting component (23). The upper cover assembly (1) is located between the first fixing component (21) and the transition connecting component (23). The first fixing component (21) includes a fixing bolt (211). A gasket (212) and a metal bushing (214) are sequentially fitted on the output end of the fixing bolt (211). A rubber buffer pad (213) is fitted on the outer wall of the metal bushing (214).

2. According to claim 1, the structure of the second fixing component (22) is the same as that of the first fixing component (21). The transition connecting component (23) is further provided with a second fixing component (22) on one side and a first side cover fixing component (25) and a second side cover fixing component (26) on the other side. One end of the first fixing component (21) and the second fixing component (22) penetrates the transition connecting component (23) and is fixed to the connecting component (24). The output ends of the first side cover fixing component (25) and the second side cover fixing component (26) penetrate the transition connecting component (23) and are connected to the fixing component.

3. The bulldozer engine hood according to claim 2, characterized in that: The transition connection component (23) includes a transition connection plate (231), on the upper part of which a first connection hole (232) is symmetrically arranged. On the lower part of the transition connection plate (231) a second connection hole (233) is symmetrically arranged.

4. The bulldozer engine hood according to claim 3, characterized in that: The connecting component (24) includes a threaded connecting plate (241), on which threaded mounting holes (242) are symmetrically arranged.

5. The bulldozer engine hood according to claim 4, characterized in that: The output end of the fixing bolt (211) passes through the transition connecting plate (231) and is then installed in conjunction with the threaded mounting hole (242).

6. The bulldozer engine hood according to claim 3, characterized in that: The first side cover fixing member (25) includes a side cover bolt (251), and a side cover gasket (252) is fitted on the side cover bolt (251). The structure of the second side cover fixing member (26) is the same as that of the second side cover fixing member (26). The first side cover fixing member (25) and the second side cover fixing member (26) are fitted with two second connecting holes (233).

7. The bulldozer engine hood according to claim 2, characterized in that: The upper cover assembly (1) includes an upper cover body (11), and fixing plates (12) are symmetrically installed on both sides of the upper cover body (11). The fixing plates (12) are respectively provided with a first mounting hole (13) and a second mounting hole (14).

8. The bulldozer engine hood according to claim 7, characterized in that: The first fixing component (21) and the second fixing component (22) are fitted with the first mounting hole (13) and the second mounting hole (14). The output end of the fixing bolt (211) is fitted with a gasket (212) and passes through the first mounting hole (13) before being fitted with a metal bushing (214).

9. A bulldozer engine hood according to claim 6, characterized in that: The side cover assembly (3) includes a side cover body (31), on which a side cover fixing plate (32) is installed. The side cover fixing plate (32) is symmetrically provided with a first positioning hole (33) and a second positioning hole (34). The first side cover fixing member (25) and the second side cover fixing member (26) are fitted with the first positioning hole (33) and the second positioning hole (34). The output end of the side cover bolt (251) is fitted with a side cover gasket (252) and then passes through the second connecting hole (233) and is fixedly installed with the second positioning hole (34).

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