Bottom cover structure in gearbox for truck

Abstract

The utility model relates to a bottom cover structure in a gearbox for a truck, which comprises a main chassis in the shape of a circular truncated cone, a conical inner folding edge is formed on the outer ring of the upper end of the main chassis in a punching manner, a horizontal annular lower connecting edge is formed between the inner folding edge and the main chassis, and a conical outer folding edge is formed on the outer ring of the inner folding edge in a punching manner. A spinning edge with an arc-shaped section is formed on the outer ring of the outer folding edge; a shaft hole is formed in the center of the main chassis; a horizontal pipe penetrating opening which is a kidney-shaped hole is formed in the outer wall of one side of the main chassis, a plurality of annularly-distributed pipe clamps are arranged on the side edge, on one side of the pipe penetrating opening, of the main chassis, each pipe clamp comprises a connecting plate abutting against the lower connecting edge of the outer ring of the main chassis, and a transition plate inclining downwards is formed at the inner end of each connecting plate. An arc-shaped elastic toggle clip is formed at the lower end of the transition plate. The side hole is formed in the bottom cover, and the pipe clamp for restraining the cooling pipeline is installed, so that the cooling pipeline can be spirally arranged, the deformation of the cooling pipeline can be reduced, and meanwhile, the cooling pipeline is convenient to install.

Description

Technical fields:

[0001] This utility model relates to the technical field of vehicle mounting brackets, and more specifically to a bottom cover structure for a truck gearbox. Background technology:

[0002] Currently, a crucial cooling system exists within the precision components of automobiles, ensuring the proper functioning of various parts during high-temperature operation. For example, the transmission is not isolated but closely connected to the cooling circulation within the system. The gear sets within the transmission are cooled by transmission fluid, which is connected to a radiator on the outside of the transmission via cooling pipes. The transmission has a disc-shaped bottom cover, through which the cooling pipes pass and exit from the adjacent side wall of the transmission. Existing bottom covers have through-holes corresponding to the cooling pipes. Since the output shaft hole is located in the center of the bottom cover, these through-holes are positioned on the side of the bottom cover, close to the pipe holes on the transmission, and their end faces are perpendicular to the side wall of the transmission. Furthermore, the cooling pipes are made of copper, and bending is required when passing through these two openings. Because the openings are close together, this not only makes installation cumbersome but also results in significant deformation of the copper pipes after bending, affecting the delivery of transmission fluid and thus impacting the cooling of the transmission. Utility Model Content:

[0003] The purpose of this utility model is to address the shortcomings of existing technology by providing a bottom cover structure for a truck gearbox. The bottom cover has a side opening and a pipe clamp for constraining the cooling pipe is installed, which enables the cooling pipe to be arranged in a spiral, reduces the deformation of the cooling pipe, and facilitates the installation of the cooling pipe.

[0004] A bottom cover structure for a truck gearbox includes a frustum-shaped main chassis. The outer ring of the upper end of the main chassis is stamped with a conical inner flange. A horizontal annular lower connecting edge is formed between the inner flange and the main chassis. The outer ring of the inner flange is stamped with a conical outer flange, and the outer ring of the outer flange has a spiral edge with an arc-shaped cross-section. A shaft hole is formed at the center of the main chassis.

[0005] A horizontal, waist-shaped through-hole is formed on the outer wall of one side of the main chassis. Several pipe clamps are arranged in a ring on the side of the main chassis on the side of the through-hole. Each pipe clamp includes a connecting plate that abuts against the lower connecting edge of the outer ring of the main chassis. The inner end of the connecting plate is formed with a downwardly inclined transition plate. The lower end of the transition plate is formed with an arc-shaped elastic buckle. The upper end of the elastic buckle is formed with a vertical lever. The connecting plate is riveted to the lower connecting edge of the outer ring of the main chassis.

[0006] Preferably, the main chassis consists of a horizontal base plate and conical side plates, and several reinforcing bosses protruding inward and upward are stamped on both sides of the main chassis through the pipe opening.

[0007] A reinforced cavity with a downward indentation is formed on the other side of the main chassis opposite the pipe opening.

[0008] Preferably, the central axis of the shaft hole and the central axis of the helical edge coincide, and the reinforced cavity and the reinforced boss are distributed in a ring around the central axis of the shaft hole;

[0009] The outer ring of the main chassis upper plate has several mounting holes, which are distributed between adjacent reinforcing bosses and between the reinforcing bosses and the reinforcing cavity.

[0010] Preferably, a horizontal annular upper connecting edge is formed between the outer fold and the inner fold, and the inclination angle of the outer fold is the same as that of the inner fold.

[0011] Preferably, the inner and outer folded edges on the upper side of the pipe opening are formed with inwardly protruding clearance platforms.

[0012] Preferably, the elastic clip on the pipe clamp has a groove formed in the middle.

[0013] Preferably, the upper side of the pipe opening is located on the lower connecting edge between the inner folded edge and the main chassis.

[0014] The beneficial effects of this utility model are as follows:

[0015] The bottom cover has a side opening and a pipe clamp for constraining the cooling pipe is installed, which allows the cooling pipe to be arranged in a spiral, reducing the deformation of the cooling pipe and facilitating the installation of the cooling pipe. Attached image description:

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention from another angle;

[0018] Figure 3 This is a structural schematic diagram of the present invention viewed from below.

[0019] In the diagram: 1. Main chassis; 11. Inner folded edge; 12. Outer folded edge; 13. Rotary edge; 14. Shaft hole; 15. Pipe through-hole; 16. Reinforcing boss; 17. Reinforcing cavity; 18. Mounting hole; 19. Clearance platform; 2. Pipe clamp; 21. Connecting plate; 22. Transition plate; 23. Elastic clip; 24. Paddle; 3. Rivet. Detailed implementation method:

[0020] Example: See Figure 1 , 2 As shown in Figure 3, a bottom cover structure for a truck gearbox includes a frustum-shaped main chassis 1. The outer ring of the upper end of the main chassis 1 is stamped with a conical inner flange 11. A horizontal annular lower connecting edge is formed between the inner flange 11 and the main chassis 1. The outer ring of the inner flange 11 is stamped with a conical outer flange 12. The outer ring of the outer flange 12 is formed with a spiral edge 13 with an arc-shaped cross-section. A shaft hole 14 is formed in the center of the main chassis 1, and the output shaft of the gearbox is installed in the shaft hole 14.

[0021] A horizontal, waist-shaped through-hole 15 is formed on the outer wall of one side of the main chassis 1. Several pipe clamps 2 are arranged in a ring on the side of the main chassis 1 on the side of the through-hole 15. The pipe clamp 2 includes a connecting plate 21 that abuts against the lower connecting edge of the outer ring of the main chassis 1. The inner end of the connecting plate 21 is formed with a downwardly inclined transition plate 22. The lower end of the transition plate 22 is formed with an arc-shaped elastic buckle 23. The upper end of the elastic buckle 23 is formed with a vertical lever 24. The connecting plate 21 is riveted and fixed to the lower connecting edge of the outer ring of the main chassis 1 by rivets 3.

[0022] The main chassis 1 consists of a horizontal base plate and conical side plates. Several reinforcing bosses 16 protruding inward and upward are stamped on both sides of the main chassis 1 at the through-hole 15. On the other side of the main chassis 1 opposite to the through-hole 15, a reinforcing cavity 17 is formed that is recessed downward. Both the reinforcing bosses 16 and the reinforcing cavity 17 are stamped rib structures, which can avoid other parts in the gearbox and strengthen the bottom cover to compensate for the strength loss caused by opening the through-hole 15.

[0023] The central axis of the shaft hole 14 coincides with the central axis of the spiral edge 13. The reinforced cavity 17 and the reinforced boss 16 are distributed in a ring around the central axis of the shaft hole 14, so as to achieve uniform distribution of the rib groove structure and good overall strength of the bottom cover.

[0024] The outer ring of the base plate on the main chassis 1 has several mounting holes 18. The mounting holes 18 are distributed between adjacent reinforcing bosses 16 and between reinforcing bosses 16 and reinforcing cavities 17. Bolts are inserted into the mounting holes 18 to fix the bottom cover to the gearbox. The mounting holes 18 are located between adjacent rib groove structures, and the base plate at the location of the mounting holes 18 has high resistance to deformation.

[0025] A horizontal annular upper connecting edge is formed between the outer folded edge 12 and the inner folded edge 11. The inclination angle of the outer folded edge 12 is the same as that of the inner folded edge 11. Both the outer folded edge 12 and the inner folded edge 11 are stamped folded plate structures, which can improve the deformation resistance of the bottom cover.

[0026] The inner fold 11 and outer fold 12 on the upper side of the through-hole 15 are formed with inwardly protruding relief platforms 19. Since the relief platforms 19 protrude inward, their outer side is a recessed cavity. The cavity at the relief platforms 19 facilitates the installation of cooling pipes and allows the cooling pipes to pass through the through-hole 15. This prevents the cooling pipes from being sandwiched between the outer wall of the main chassis 1 and the inner wall of the gearbox and deforming. Deformed cooling pipes would affect the gearbox's cooling system.

[0027] The elastic clip 23 on the pipe clamp 2 has a groove 231 formed in the middle. The groove 231 can weaken the strength of the elastic clip 23, making it easier to open the elastic clip 23, thereby making it easier to clip the cooling pipe into the elastic clip 23.

[0028] The upper side of the pipe inlet 15 is located on the lower connecting edge between the inner folded edge 11 and the main chassis 1, that is, the height of the pipe clamp 2 is similar to the height of the pipe inlet 15, which reduces the deformation of the cooling pipe caused by the height difference.

[0029] Working principle: This structure is the bottom cover structure inside the truck gearbox. The side wall of the bottom cover structure is provided with a pipe through port 15. The cooling pipe passes through the pipe through port 15 and is snapped in the pipe clamp 2, so that the cooling pipe is arranged in a spiral shape, thereby reducing the deformation caused by bending.

[0030] Meanwhile, the through holes and pipe openings 15 on the gearbox are not on two perpendicular planes, which facilitates the installation and insertion of cooling pipes; at the same time, the bottom cover is provided with multiple reinforcing bosses 16, as well as reinforcing cavities 17, inner folded edges 11 and outer folded edges 12, which can improve the strength of the inner folded edges 11.

[0031] The embodiments described above are illustrative of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be as set forth in the claims.

Claims

1. A bottom cover structure for a truck gearbox, comprising a frustum-shaped main chassis (1), wherein the outer ring of the upper end of the main chassis (1) is stamped with a conical inner flange (11), characterized in that: A horizontal annular lower connecting edge is formed between the inner folded edge (11) and the main chassis (1). The outer ring of the inner folded edge (11) is stamped with a conical outer folded edge (12). The outer ring of the outer folded edge (12) is formed with a spiral edge (13) with a circular arc cross-section. A shaft hole (14) is formed in the center of the main chassis (1). The outer wall of one side of the main chassis (1) has a horizontal and waist-shaped through-hole (15). The side of the main chassis (1) on the side of the through-hole (15) is provided with a number of pipe clamps (2) arranged in a ring. The pipe clamp (2) includes a connecting plate (21) that abuts against the lower connecting edge of the outer ring of the main chassis (1). The inner end of the connecting plate (21) is formed with a downwardly inclined transition plate (22). The lower end of the transition plate (22) is formed with an arc-shaped elastic buckle (23). The upper end of the elastic buckle (23) is formed with a vertical lever (24). The connecting plate (21) is riveted and fixed to the lower connecting edge of the outer ring of the main chassis (1) by rivets (3).

2. The bottom cover structure for a truck gearbox according to claim 1, characterized in that: The main chassis (1) consists of a horizontal base plate and a conical side plate. Several reinforcing bosses (16) protruding inward and upward are stamped on the main chassis (1) on both sides of the through-hole (15). A reinforced cavity (17) with a downward indentation is formed on the other side of the main chassis (1) opposite to the pipe opening (15).

3. The bottom cover structure for a truck gearbox according to claim 2, characterized in that: The central axis of the shaft hole (14) coincides with the central axis of the spiral edge (13), and the reinforced cavity (17) and the reinforced boss (16) are distributed in a ring around the central axis of the shaft hole (14); The outer ring of the upper plate of the main chassis (1) has several mounting holes (18), which are distributed between adjacent reinforcing bosses (16) and between the reinforcing bosses (16) and the reinforcing cavity (17).

4. The bottom cover structure for a truck gearbox according to claim 1, characterized in that: A horizontal annular upper connecting edge is formed between the outer fold (12) and the inner fold (11), and the inclination angle of the outer fold (12) is the same as that of the inner fold (11).

5. The bottom cover structure for a truck gearbox according to claim 1, characterized in that: The inner fold (11) and outer fold (12) on the upper side of the pipe opening (15) are formed with inwardly protruding clearance platforms (19).

6. The bottom cover structure for a truck gearbox according to claim 1, characterized in that: The tube clamp (2) has a groove (231) formed in the middle of the elastic buckle (23).

7. The bottom cover structure for a truck gearbox according to claim 1, characterized in that: The upper side of the pipe opening (15) is located on the lower connecting edge between the inner folded edge (11) and the main chassis (1).

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