Gearbox flange plate structure for heavy dumper

Abstract

The utility model discloses a gearbox flange plate structure for a heavy dumper. The gearbox flange plate structure comprises a plate body, a mounting groove, a spigot structure, a shaft hole and a groove structure. The upper end face and the lower end face of the disc body are of arc curved surface structures, and the left side face and the right side face are of plane structures and are parallel. The groove structure is arranged on the rear side face of the middle of the tray body and penetrates through the left side face and the right side face of the tray body. The shaft hole is formed in the center of the groove structure, and the shaft hole and the disc body are coaxially arranged; the two mounting grooves are symmetrically formed in the rear side face of the disc body in the radial direction of the disc body, the distances between the edges of the mounting grooves and the left side face and the right side face of the disc body are equal, and the mounting grooves extend to the outer edge of the groove structure from the upper end face and the lower end face of the disc body. The gearbox flange plate structure for the heavy dumper can be directly connected with a novel universal joint, a universal joint fork connected with the flange plate end is omitted, the arrangement problem of a power transmission chain can be solved, the whole dumper arrangement requirement is met, and the whole dumper power transmission stability is guaranteed.

Description

Technical Field

[0001] This utility model relates to automotive transmission flanges, specifically to a transmission flange structure for heavy-duty dump trucks. Background Technology

[0002] The gearbox flange, a crucial connecting component in an automotive transmission system, is typically mounted at the gearbox output end and connected to the universal joint fork using bolts or other fastening methods. Power is then transmitted to the wheels via the driveshaft, ensuring smooth vehicle operation. Modern heavy-duty trucks generally use cross-shaft universal joints for power conversion and transmission. Traditional flange-to-universal joint fork connections include... Figure 1 As shown, the power transmission chain is "flange a - universal joint fork b - cross shaft universal joint c - drive shaft". In a certain type of heavy-duty dump truck, the drive shaft is connected to both ends by a special universal joint. This special universal joint cannot be matched with a traditional universal joint fork. Therefore, there is currently no suitable existing gearbox flange for this special universal joint to connect to. Furthermore, due to the limited space between the vehicle's output end and the rear axle, coupled with the drive shaft length limitation, the arrangement of the power transmission chain becomes difficult after the selected gearbox occupies a certain amount of space. Utility Model Content

[0003] The purpose of this invention is to solve the technical problem that the existing gearbox flange cannot be adapted to the special universal joint of heavy-duty dump trucks, and to provide a gearbox flange structure for heavy-duty dump trucks that can be directly connected to the special universal joint of heavy-duty dump trucks, eliminating the universal joint fork connected to the flange end and solving the problem of power transmission chain arrangement.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A gearbox flange structure for heavy-duty dump trucks is characterized by comprising a disc body, mounting grooves, a stop structure, a shaft hole, and a recess structure. The upper and lower end faces of the disc body are arc-shaped curved surfaces, while the left and right sides are planar and parallel. The recess structure is located on the rear side of the middle portion of the disc body and extends through both sides. The shaft hole is located at the center of the recess structure and is coaxial with the disc body. Two mounting grooves are symmetrically arranged on the rear side of the disc body, radially aligned, with a depth less than the depth of the recess structure and edges equidistant from both sides of the disc body. Each groove extends from the upper and lower end faces of the disc body to the outer edge of the recess structure. The stop structure is located on the rear side of the disc body near the upper and lower end faces and extends circumferentially. The two mounting grooves penetrate the stop structures located on the upper and lower end faces.

[0006] Furthermore, the height of the bottom surface of the mounting groove is higher than the height of the bottom surface of the groove structure.

[0007] Furthermore, a central through hole for assembling a flange nut is provided on the rear side of the disc body, and the central through hole is coaxially arranged with the shaft hole.

[0008] Furthermore, the diameter of the central through hole is larger than the diameter of the shaft hole.

[0009] Furthermore, the disc body is provided with four bolt holes, two of which are located near the upper end of the disc body and on both sides of the mounting groove, and the other two are located near the lower end of the disc body and also on both sides of the mounting groove. The four bolt holes are used to install bolts.

[0010] Furthermore, the shaft hole has an internal spline structure for connection with the gearbox output shaft.

[0011] Furthermore, the thickness of the stop structure along the radial direction of the disc body is 7.5 mm, and the height along the axial direction of the disc body is 8 mm.

[0012] Furthermore, the mounting groove has a depth of 8.5 mm and a width of 35 mm.

[0013] The advantages of this utility model compared to the prior art are:

[0014] 1. This utility model relates to a gearbox flange structure for heavy-duty dump trucks, which can be directly connected to the special universal joint of heavy-duty dump trucks, eliminating the need for the universal joint fork connected to the flange end. This solves the problem of power transmission chain layout, changing the traditional power transmission chain from "flange-universal joint fork-cross shaft universal joint-drive shaft" to "flange-universal joint-drive shaft", which satisfies the overall vehicle layout and ensures the stability of the vehicle's power transmission.

[0015] 2. The present invention relates to a gearbox flange structure for heavy-duty dump trucks. Compared with traditional round flanges, the flange body has symmetrical straight beveled edges. Through the beveled edge design, the weight is reduced, the use of raw materials is saved, and it is easy to disassemble and install.

[0016] 3. The gearbox flange structure of this utility model for heavy-duty dump trucks is equipped with a stop structure and a mounting groove, both of which can achieve precise positioning, ensure precise alignment with the universal joint, and ensure smooth power transmission. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the connection method between the flange and the universal joint fork in the prior art;

[0018] Figure 2 This is a schematic diagram of an embodiment of the gearbox flange structure of this utility model for heavy-duty dump trucks;

[0019] Figure 3 for Figure 2 View from direction A;

[0020] Figure 4 for Figure 2 View from direction B;

[0021] Figure 5 This is a schematic diagram of the special universal joint structure of the heavy-duty dump truck to be connected in an embodiment of this utility model;

[0022] Figure 6 This is a schematic diagram illustrating the connection method of the present utility model embodiment with the special universal joint of the heavy-duty dump truck;

[0023] The annotations in the attached figures are explained as follows:

[0024] 1-Disc body, 2-Mounting groove, 3-Stop structure, 4-Shaft hole, 5-Center through hole, 6-Groove structure, 7-Bolt hole. Detailed Implementation

[0025] To make the objectives, advantages and features of this utility model clearer, the gearbox flange structure for heavy-duty dump trucks proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 2-4 As shown, the gearbox flange structure for heavy-duty dump trucks of this utility model includes the following components: a disc body 1, a mounting groove 2, a stop structure 3, a shaft hole 4, a central through hole 5, a groove structure 6, and bolt holes 7. This flange structure can be adapted to the special universal joint structure of heavy-duty dump trucks. The flange structure as a whole is Y-shaped when viewed from the side.

[0027] Compared to traditional circular flanges, the disc body 1 has symmetrical straight beveled edges. The beveled edge design reduces weight, saves raw materials, and facilitates disassembly and installation. Symmetrical mounting grooves 2 are set on the disc body 1 along the straight beveled edge direction. The mounting grooves also pass through the center line of the shaft hole, with a depth of 8.5mm and a width of 35mm.

[0028] A groove structure 6 is created by hollowing out 30mm from the disc body 1 towards the shaft hole 4, mainly to leave space to ensure that the universal joint can move within the groove structure 6 within a certain angle range; the upper and lower end faces of the disc body 1 are arc-shaped curved surfaces, and the left and right sides are flat surfaces, and the left and right sides are parallel; the groove structure 6 is located on the middle rear side of the disc body 1 and extends through the left and right sides of the disc body 1; the shaft hole 4 is located at the center of the groove structure 6 and is coaxial with the disc body 1; there are two mounting grooves 2, symmetrically located on the rear side of the disc body 1, arranged radially along the disc body 1, with a depth less than the depth of the groove structure 6, and the edges are equidistant from the left and right sides of the disc body 1, and extending from the upper and lower end faces of the disc body 1 to the outer edge of the groove structure 6; the stop structure 3 is located on the rear side of the disc body 1 near the upper and lower end faces and extends circumferentially along the disc body 1, and the two mounting grooves 2 respectively penetrate the stop structure 3 located at the upper and lower end faces.

[0029] The disc body 1 has a central through hole 5 for assembling a flange nut. The central through hole 5 is coaxial with the shaft hole 4, and the diameter of the central through hole 5 is larger than the inner diameter of the shaft hole 4. The shaft hole 4 has an internal spline structure to ensure the stability of the connection between the flange and the gearbox output shaft. There are four bolt holes 7, two of which are located near the upper end of the disc body 1, on both sides of the mounting groove 2, and the other two are located near the lower end of the disc body 1, also on both sides of the mounting groove 2. The four bolt holes 7 are used to install bolts.

[0030] The stop structure 3 is located on the upper and lower end faces of the disc body 1, and its direction of arrangement extends along the central axis of the shaft hole 4, distributed on both sides of the mounting groove 2. Specifically, it can be implemented by hollowing out 8mm along the inner ring of the disc body 1 towards the shaft hole 4, ensuring that the stop structure 3 is left at both ends of the disc body 1. The stop structure is 7.5mm wide and 8mm deep. The stop structure 3 and the mounting groove 2 both serve the purpose of precise positioning, ensuring the precise alignment of the flange and the universal joint, and ensuring the smoothness of power transmission.

[0031] The height of the inner groove surface of the mounting groove 2 is higher than the height of the inner groove surface of the groove structure 6, and the height of the outer edge surface of the stop structure 3 is higher than the height of the outer surface of the disc body 1; the groove structure 6, the disc body 1 and the stop structure 3 present a stepped structure when viewed from the side.

[0032] like Figures 5-6As shown, during the gearbox assembly process, the original circular flange of the gearbox is eliminated and replaced with the gearbox flange structure of this utility model for heavy-duty dump trucks. The flange structure is then directly connected to the universal joint, reducing the space required for one universal joint fork and facilitating the arrangement of the vehicle's powertrain. The specific connection method is as follows: 1. The protruding structures at both ends of the universal joint are engaged with the mounting grooves 2 at both ends of the flange of this utility model, while the stop structures 3 at both ends of the flange are tightly engaged with the universal joint to ensure the stability and firmness of the connection; 2. The four bolt holes 7 of the universal joint and the flange are aligned, and the four bolts are installed in the bolt holes 7 to ensure a firm connection. This gearbox flange structure for heavy-duty dump trucks has been applied to the F3E560 series gearbox, meeting the powertrain layout requirements of the OEM and satisfying the overall vehicle power performance.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this utility model.

Claims

1. A gearbox flange structure for heavy-duty dump trucks, characterized in that: The device includes a disc body (1), a mounting groove (2), a stop structure (3), a shaft hole (4), and a groove structure (6); the upper and lower end faces of the disc body (1) are arc-shaped curved surfaces, and the left and right sides are planar and parallel; the groove structure (6) is located on the rear side of the middle part of the disc body (1) and extends through the left and right sides of the disc body (1); the shaft hole (4) is located at the center of the groove structure (6) and is coaxial with the disc body (1); the mounting groove (2) There are two, symmetrically arranged on the rear side of the disc body (1), arranged radially along the disc body (1), the depth of which is less than the depth of the groove structure (6), the distance between the edge and the left and right sides of the disc body (1) is equal, and they extend from the upper and lower end faces of the disc body (1) to the outer edge of the groove structure (6); the stop structure (3) is arranged on the rear side of the disc body (1) near the upper and lower end faces, and extends circumferentially along the disc body (1), and the two mounting grooves (2) pass through the stop structure located at the upper and lower end faces respectively.

2. The gearbox flange structure for heavy-duty dump trucks according to claim 1, characterized in that: The height of the bottom surface of the mounting groove (2) is higher than the height of the bottom surface of the groove structure (6).

3. The gearbox flange structure for heavy-duty dump trucks according to claim 2, characterized in that: The rear side of the disc body (1) is provided with a central through hole (5) for assembling a flange nut, and the central through hole (5) is coaxially arranged with the shaft hole (4).

4. The gearbox flange structure for heavy-duty dump trucks according to claim 3, characterized in that: The diameter of the central through hole (5) is larger than the diameter of the shaft hole (4).

5. The gearbox flange structure for heavy-duty dump trucks according to claim 4, characterized in that: The disc body (1) is provided with bolt holes (7). There are four bolt holes (7), two of which are located near the upper end of the disc body (1) and are located on both sides of the mounting groove (2). The other two are located near the lower end of the disc body (1) and are also located on both sides of the mounting groove (2). The four bolt holes (7) are used to install bolts.

6. The gearbox flange structure for heavy-duty dump trucks according to claim 5, characterized in that: The shaft hole (4) has an internal spline structure and is used to connect with the output shaft of the gearbox.

7. The gearbox flange structure for heavy-duty dump trucks according to claim 6, characterized in that: The thickness of the stop structure (3) along the radial direction of the disc body (1) is 7.5 mm, and the height along the axial direction of the disc body (1) is 8 mm.

8. The gearbox flange structure for heavy-duty dump trucks according to claim 7, characterized in that: The mounting groove (2) has a depth of 8.5 mm and a width of 35 mm.

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