Gearbox shell structure

Abstract

The utility model discloses a gearbox shell structure which comprises a shell, a bearing seat is arranged in the shell, an annular groove is formed in the top end of the side wall of the shell, a top ring plate is clamped in the annular groove, and the lower surface of the top ring plate and the upper surface of the bearing seat are jointly and fixedly connected with two detachable connecting rods. A bearing hole is formed in the middle of the bearing seat, a shaft hole is formed in the middle of the bottom wall of the shell, and a plurality of annular protruding edges are arranged on the outer side wall of the shell at equal intervals. The shell, the bearing seat, the top ring plate and the connecting rods are arranged, the two connecting rods are fixedly connected between the bearing seat and the top ring plate, and when the bearing seat is located in the shell, the top ring plate is fixed in the annular groove in the top of the shell through the second bolt, so that the bearing seat does not need to be installed in the shell; and the bearing seat can be fixedly mounted only by mounting and fixing the top ring plate at the top of the shell, so that the mounting convenience of the bearing seat is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a gearbox housing structure. Background Art

[0002] The transmission, also known as the gearbox, is a mechanism used to change the speed and torque from the engine. It can change the transmission ratio of the output shaft and the input shaft in a fixed or divided manner. The transmission consists of a speed transmission mechanism and an operating mechanism. Some cars also have a power output mechanism. Most transmission mechanisms use ordinary gear transmissions, and some use planetary gear transmissions. Ordinary gear transmission speed change mechanisms generally use sliding gears and synchronizers, etc. Usually, the transmission consists of an external housing and an internal transmission mechanism.

[0003] The patent with announcement number CN211039595U discloses a gearbox housing structure, which designs the bearing seat housing and the gearbox housing into a separate structure, fixes the bearing seat housing to the gearbox housing, and changes the existing integral connection type into a separate structure; the bearing seat housing is a separate part and is processed separately in advance. During assembly, it is only necessary to place the bearing seat housing and its accessory parts as a whole into the gearbox housing to complete the assembly, thereby reducing the casting defects of the gearbox housing, ensuring the processing accuracy of the bearing support hole, reducing the manufacturing cost, and facilitating assembly.

[0004] However, when the bearing housing is installed in the gearbox housing structure, it needs to be completed inside the housing. Due to the small space inside the housing, it is not convenient to tighten the screws during installation and disassembly, which makes the installation of the bearing housing difficult. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a gearbox housing structure that can be easily disassembled and assembled.

[0006] According to a gearbox housing structure of an embodiment of the utility model, it includes a housing, a bearing seat is provided inside the housing, an annular groove is provided at the top end of the housing side wall, and a top ring plate is clamped inside the annular groove, the lower surface of the top ring plate and the upper surface of the bearing seat are jointly fixedly connected with two detachable connecting rods, a bearing hole is provided in the middle of the bearing seat, an axial hole is provided in the middle of the housing bottom wall, and a plurality of annular ridges are provided at equal distances on the outer side wall of the housing.

[0007] At least the following beneficial effects are provided: when the utility model is in use, the gearbox housing structure is provided with a housing, a bearing seat, a top ring plate and a connecting rod, and two connecting rods are fixedly connected between the bearing seat and the top ring plate. When the bearing seat is located inside the housing, the top ring plate is fixed in the annular groove on the top of the housing by a second bolt. Therefore, the installation of the bearing seat does not need to be completed inside the housing. It is only necessary to install and fix the top ring plate on the top of the housing to achieve fixed installation of the bearing seat, thereby improving the installation convenience of the bearing seat. When the utility model is in use, the gearbox housing structure is provided with a bearing seat, a top ring plate and a connecting rod, and the connecting rod is removable between the bearing seat and the top ring plate. Therefore, for the structure composed of the bearing seat, the top ring plate and the connecting rod, each component can be disassembled and replaced separately, which also reduces the production difficulty.

[0008] According to some embodiments of the utility model, a screw head is fixedly connected to the top end of the connecting rod, and a thread groove for screwing into the screw head is formed on the lower surface of the top ring plate.

[0009] According to some embodiments of the present utility model, a first screw hole is formed at the bottom end of the connecting rod and the side of the bearing seat, and a first bolt is connected inside the first screw hole.

[0010] According to some embodiments of the utility model, a second countersunk hole is formed on the lower surface of the bearing seat near the first bolt, and the screw head of the first bolt is located inside the second countersunk hole.

[0011] According to some embodiments of the utility model, the side wall of the annular groove and the outer side wall of the top ring plate are both provided with a plurality of second screw holes, and second bolts are connected to the corresponding second screw holes on the side wall of the annular groove and the top ring plate.

[0012] According to some embodiments of the present invention, a first countersunk hole is formed on the outer side wall of the shell near the second bolt, and the screw head of the second bolt is located inside the first countersunk hole.

[0013] According to some embodiments of the utility model, a positioning protrusion is fixed to the inner bottom wall of the annular groove, and a positioning hole for snapping into the positioning protrusion is opened on the lower surface of the top ring plate.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following is a description of some embodiments of the present invention in conjunction with the accompanying drawings and embodiments, wherein:

[0016] Figure 1 This is an overall cross-sectional view of the gearbox housing structure of an embodiment of the utility model;

[0017] Figure 2 It is a partial stereoscopic diagram of the gearbox housing structure of an embodiment of the utility model;

[0018] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 4 for Figure 1 Enlarged view of point B in the middle. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] Reference Figures 1 to 4 The utility model discloses a gearbox housing structure, including a housing 100, a bearing seat 200 is arranged inside the housing 100, an annular groove 101 is opened at the top of the side wall of the housing 100, and a top ring plate 300 is clamped inside the annular groove 101, the lower surface of the top ring plate 300 and the upper surface of the bearing seat 200 are fixedly connected with two detachable connecting rods 400, a bearing hole 210 is opened in the middle of the bearing seat 200, an axial hole 102 is opened in the middle of the bottom wall of the housing 100, and a plurality of annular ridges 110 are equidistantly arranged on the outer wall of the housing 100.

[0024] In some embodiments, a screw head 500 is fixedly connected to the top end of the connecting rod 400 , and a thread groove 310 for screwing the screw head 500 is formed on the lower surface of the top ring plate 300 .

[0025] In some embodiments, when connecting the connecting rod 400 and the top ring plate 300, the screw head 500 at the top of the connecting rod 400 is directly screwed into the thread groove 310 on the lower surface of the top ring plate 300. Therefore, the connecting rod 400 and the top ring plate 300 can also be produced separately.

[0026] In some embodiments, a first screw hole 600 is formed at the bottom end of the connecting rod 400 and the side of the bearing seat 200 , and a first bolt 700 is connected inside the first screw hole 600 .

[0027] In some embodiments, when connecting the connecting rod 400 and the bearing seat 200, align the first screw hole 600 on the bearing seat 200 with the first screw hole 600 at the bottom of the connecting rod 400, and then screw the first bolt 700 into the first screw hole 600 to achieve a fixed connection between the connecting rod 400 and the bearing seat 200.

[0028] In some embodiments, a second countersunk hole 220 is formed on the lower surface of the bearing seat 200 near the first bolt 700, and the screw head of the first bolt 700 is located inside the second countersunk hole 220. Therefore, it can be ensured that the lower surface of the bearing seat 200 is flat and has no protrusions.

[0029] In some embodiments, a plurality of second screw holes 800 are provided on the side wall of the annular groove 101 and the outer wall of the top ring plate 300, and second bolts 900 are connected to the second screw holes 800 corresponding to the side wall of the annular groove 101 and the top ring plate 300. The top ring plate 300 can be fixed inside the annular groove 101 through the second bolts 900.

[0030] In some embodiments, a first countersunk hole 103 is formed on the outer wall of the housing 100 near the second bolt 900, and the screw head of the second bolt 900 is located inside the first countersunk hole 103. This ensures that the exterior of the housing 100 is flat and has no protrusions.

[0031] In some embodiments, a positioning protrusion 1000 is fixed to the inner bottom wall of the annular groove 101 , and a positioning hole 320 for inserting the positioning protrusion 1000 is opened on the lower surface of the top ring plate 300 .

[0032] In some embodiments, when installing the top ring plate 300 inside the annular groove 101, the positioning protrusion 1000 can be aligned with the positioning hole 320, so as to quickly align the top ring plate 300 and the second screw hole 800 on the side wall of the annular groove 101, making it easier to screw the second bolt 900 into the second screw hole 800.

[0033] Working principle: During assembly, the bearing seat 200 is inserted into the housing 100, and then the top ring plate 300 is snapped into the annular groove 101, and during the snapping process, the positioning protrusion 1000 is aligned with the positioning hole 320, and then the top ring plate 300 is fixed by screwing the second bolt 900 into the second screw hole 800, thereby fixing the bearing seat 200 in the housing 100. During disassembly, only the top ring plate 300 needs to be removed to remove the bearing seat 200 from the housing 100.

[0034] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A gearbox housing structure, comprising a housing (100), a bearing seat (200) being provided inside the housing (100), and an annular groove (101) being provided at the top end of a side wall of the housing (100), characterized in that: A top ring plate (300) is clamped inside the annular groove (101); the lower surface of the top ring plate (300) and the upper surface of the bearing seat (200) are fixedly connected to two detachable connecting rods (400); a bearing hole (210) is provided in the middle of the bearing seat (200); an axial hole (102) is provided in the middle of the bottom wall of the housing (100); and a plurality of annular ridges (110) are provided at equal distances on the outer wall of the housing (100).

2. A gearbox housing structure according to claim 1, characterized in that: The top end of the connecting rod (400) is fixedly connected to a screw head (500), and the lower surface of the top ring plate (300) is provided with a thread groove (310) for screwing into the screw head (500).

3. A gearbox housing structure according to claim 1, characterized in that: A first screw hole (600) is provided at the bottom end of the connecting rod (400) and the side of the bearing seat (200), and a first bolt (700) is connected inside the first screw hole (600).

4. A gearbox housing structure according to claim 3, characterized in that: A second countersunk hole (220) is provided on the lower surface of the bearing seat (200) near the first bolt (700), and the screw head of the first bolt (700) is located inside the second countersunk hole (220).

5. The gearbox housing structure according to claim 1, characterized in that: The side wall of the annular groove (101) and the outer side wall of the top ring plate (300) are both provided with a plurality of second screw holes (800), and second bolts (900) are connected to the corresponding second screw holes (800) on the side wall of the annular groove (101) and the top ring plate (300).

6. A gearbox housing structure according to claim 5, characterized in that: A first countersunk hole (103) is provided on the outer wall of the housing (100) near the second bolt (900), and the screw head of the second bolt (900) is located inside the first countersunk hole (103).

7. The gearbox housing structure according to claim 1, characterized in that: A positioning protrusion (1000) is fixed to the inner bottom wall of the annular groove (101), and a positioning hole (320) for snapping into the positioning protrusion (1000) is provided on the lower surface of the top ring plate (300).

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