High-strength gear case housing

Abstract

The utility model provides high -strength gear box box shell, including bottom cover and be used for covering top cover on bottom cover, be equipped with bottom cover first sliding bearing, bottom cover second sliding bearing, bottom cover third sliding bearing and bottom cover fourth sliding bearing on bottom cover bottom plate, be equipped with top cover first sliding bearing, top cover second sliding bearing and top cover third sliding bearing on top cover top plate, the position size of top cover first sliding bearing, top cover second sliding bearing, top cover third sliding bearing match with bottom cover first sliding bearing, bottom cover second sliding bearing, bottom cover third sliding bearing, bottom cover and top cover inside all are equipped with the reinforcing rib of radiation, and the sliding bearing is connected together with the inner wall of box shell through the reinforcing rib, and this structure can promote the rigidity and strength of sliding bearing.

Description

Technical Field

[0001] This utility model relates to industrial gearbox housings, and more particularly to high-strength gearbox housings. Background Technology

[0002] A gearbox (also known as a transmission) is the core component of a power transmission system. Its primary function is to regulate the speed and torque of power, and to reliably transmit and distribute power to meet the operating requirements of the power source (such as an engine or motor) and the actuators (such as wheels or working devices). Industrial gearboxes typically house a large number of gears forming planetary gear sets. Sliding bearings are often installed inside the housing to limit and fix the gear positions. These sliding bearings are in direct contact with the bearings on the gears. When the planetary gear set rotates, it generates strong torque and vibration. Prolonged operation can lead to deformation and damage of the sliding bearings, ultimately rendering the entire gearbox housing unusable. Summary of the Invention

[0003] To address the above problems, this utility model provides a high-strength gearbox housing.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A high-strength gearbox housing includes a bottom cover, a top cover for covering the bottom cover, connecting holes, and connectors. The connectors pass through the connecting holes to connect the bottom cover and the top cover together to form the gearbox housing. The housing is characterized by further including several elongated reinforcing ribs and sliding bearings. The bottom cover has sliding bearings fixedly connected to the bottom plate of the bottom cover. The outer wall of the sliding bearing is fixedly connected to one end of a reinforcing rib, and the other end of the reinforcing rib is fixedly connected to a side plate of the bottom cover. The bottom surface of the reinforcing rib is fixedly connected to the bottom plate of the bottom cover. The top cover has sliding bearings fixedly connected to the top plate of the top cover. The outer wall of the sliding bearing is fixedly connected to one end of a reinforcing rib, and the other end of the reinforcing rib is fixedly connected to the inner wall of a side plate of the top cover. The top surface of the reinforcing rib is fixedly connected to the top plate of the top cover. Several reinforcing ribs are connected to the outer wall of the sliding bearing.

[0006] Furthermore, the sliding bearing includes: a first sliding bearing for the bottom cover, a second sliding bearing for the bottom cover, a third sliding bearing for the bottom cover, a fourth sliding bearing for the bottom cover, a first sliding bearing for the top cover, a second sliding bearing for the top cover, and a third sliding bearing for the top cover; the positions of the first sliding bearing for the bottom cover, the second sliding bearing for the bottom cover, and the third sliding bearing for the bottom cover correspond to those of the first sliding bearing for the top cover, the second sliding bearing for the top cover, and the third sliding bearing for the top cover.

[0007] Furthermore, the bottom plate of the bottom cover is provided with a first sliding bearing, a second sliding bearing, a third sliding bearing, and a fourth sliding bearing. The first and fourth sliding bearings have through holes, and the second and third sliding bearings have grooves. One end of the reinforcing rib is fixedly connected to the outer wall of the sliding bearing, pointing towards the center of the sliding bearing, and the other end is fixedly connected to the inner wall of the side plate of the bottom cover. A protruding ridge is provided at the connection point, and the height of the protruding ridge is the same as the height of the side plate of the bottom cover.

[0008] Furthermore, the top plate of the top cover is provided with a first sliding bearing, a second sliding bearing, and a third sliding bearing. The first, second, and third sliding bearings are provided with grooves. One end of the reinforcing rib is fixedly connected to the outer wall of the sliding bearing, pointing towards the center of the sliding bearing, and the other end is fixedly connected to the inner wall of the side plate of the top cover. A protruding ridge is provided at the connection point, and the height of the protruding ridge is the same as the height of the side plate of the top cover.

[0009] Furthermore, the bottom cover is provided with seventeen reinforcing ribs; eight reinforcing ribs are connected to the outer wall of the first sliding bearing of the bottom cover; four reinforcing ribs are connected to the outer wall of the second sliding bearing of the bottom cover; two reinforcing ribs are connected to the outer wall of the third sliding bearing of the bottom cover; and three reinforcing ribs are connected to the outer wall of the fourth sliding bearing of the bottom cover.

[0010] Furthermore, the top cover is provided with twenty-four reinforcing ribs; ten reinforcing ribs are connected to the outer wall of the first sliding bearing of the top cover; six reinforcing ribs are connected to the outer wall of the second sliding bearing of the top cover; and eight reinforcing ribs are connected to the outer wall of the third sliding bearing of the top cover.

[0011] Furthermore, the reinforcing rib is made of low-carbon steel.

[0012] Furthermore, the connecting holes are bolt holes, and all connecting holes are located on the protruding ridges; the depth of the connecting holes on the bottom cover is less than the height of the inner wall of the bottom cover, and the depth of the connecting holes on the top cover is equal to the height of the inner wall of the top cover; the position and size of the connecting holes on the bottom cover match the position and size of the connecting holes on the top cover.

[0013] Furthermore, the connector is a bolt, and the length of the connector section matches the sum of the depths of the bottom cover connecting hole and the top cover connecting hole.

[0014] Furthermore, the inner wall side of the bottom cover side plate is provided with an oil drain hole for discharging lubricating oil.

[0015] Compared with existing technologies, this high-strength gearbox housing of the present invention features several reinforcing ribs radiating outward from the center of the sliding bearing on the outer wall of the sliding bearing. One end of each reinforcing rib is fixedly connected to the inner wall of the housing, and a protruding ridge is added at the connection point. This new design effectively disperses the torque and vibration generated during the operation of the planetary gear set, and distributes the concentrated stress applied to the shaft hole to the edge of the housing through the reinforcing ribs. This design not only improves the rigidity and strength of the sliding bearing area of ​​the housing, but also prevents deformation of the sliding bearing. Attached Figure Description

[0016] Figure 1 This is a perspective view of the high-strength gearbox housing of this utility model;

[0017] Figure 2 This is the bottom cover of the high-strength gearbox housing of this utility model;

[0018] Figure 3 This is the top cover of the high-strength gearbox housing of this utility model.

[0019] In the diagram: 100. Bottom cover; 101. First sliding bearing of the bottom cover; 102. Second sliding bearing of the bottom cover; 103. Third sliding bearing of the bottom cover; 104. Fourth sliding bearing of the bottom cover; 105. Oil drain hole; 106. Bottom plate of the bottom cover; 107. Side plate of the bottom cover; 200. Top cover; 201. First sliding bearing of the top cover; 202. Second sliding bearing of the top cover; 203. Third sliding bearing of the top cover; 204. Top plate of the top cover; 205. Side plate of the top cover; 300. Reinforcing rib; 400. Connecting hole; 500. Connector; 600. Through hole; 700. Groove; 800. Raised ridge. Detailed Implementation

[0020] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0021] Please refer to the reference. Figure 1 The high-strength gearbox housing of this utility model includes: a bottom cover (100), a top cover (200) covering the bottom cover (100), a connecting hole (400) and a connector (500). The connector (500) passes through the connecting hole (400) to connect the bottom cover (100) and the top cover (200) together to form the gearbox housing.

[0022] like Figure 2As shown, the bottom cover (100) includes a first sliding bearing (101), a second sliding bearing (102), a third sliding bearing (103), a fourth sliding bearing (104), an oil drain hole (105), a bottom plate (106), a side plate (107), reinforcing ribs (300), and a connecting hole (400). The bottom cover (100) is internally connected to the outer wall of the sliding bearings and the protruding ribs (800) on the inner wall of the side plate (107) using radial reinforcing ribs (300). The reinforcing ribs (300) are elongated, and their bottom surfaces are fixedly connected to the bottom plate (106). The bottom cover (100) has a cavity outline, and the entire cavity wall is annular. The radial reinforcing ribs (300) effectively disperse the torque and vibration generated during the operation of the planetary gear set, not only improving the rigidity and strength of the sliding bearings inside the bottom cover (100) but also preventing deformation of the sliding bearings.

[0023] Furthermore, the internal structure of the bottom cover (100) from right to left consists of a first sliding bearing (101), a second sliding bearing (102), a third sliding bearing (103), and a fourth sliding bearing (104). The first sliding bearing (101) has an internal through hole (600) for installing the output shaft. The fourth sliding bearing (104) also has an internal through hole (600) for connecting an external drive motor to the gear set inside the gearbox. The second sliding bearing (102) and the third sliding bearing (103) have internal grooves (700) corresponding to the installation of the planetary gears and the sun gear in the planetary gear set. Reinforcing ribs (300) are provided around the first sliding bearing (101), second sliding bearing (102), third sliding bearing (103), and fourth sliding bearing (104) of the bottom cover. The direction of the reinforcing ribs (300) is from the center of the sliding bearing to the protrusion (800) on the inner wall of the side plate (107) of the bottom cover. The positioning of the sliding bearings not only ensures the coaxiality of the gears and reduces transmission deviation, but also helps the operator to install the gears more correctly into the housing.

[0024] Preferably, the bottom cover (100) is provided with seventeen reinforcing ribs (300), and eight reinforcing ribs (300) are fixedly connected to the first sliding bearing (101) of the bottom cover. One end of the reinforcing rib (300) is fixedly connected to the outer wall of the first sliding bearing (101) of the bottom cover, and the other end is fixedly connected to the inner wall of the side plate (107) of the bottom cover. A protruding ridge (800) is provided at the connection. The bottom surface of the reinforcing rib (300) is fixedly connected to the bottom plate (106) of the bottom cover. The end of the reinforcing rib (300) fixedly connected to the first sliding bearing (101) of the bottom cover points to the center of the first sliding bearing (101) of the bottom cover, so that the arrangement of the eight reinforcing ribs (300) presents a pattern of... The first sliding bearing (101) of the bottom cover radiates outward from the center; four reinforcing ribs (300) are fixedly connected to the second sliding bearing (102) of the bottom cover. One end of the reinforcing rib (300) is fixedly connected to the outer wall of the second sliding bearing (102) of the bottom cover, and the other end is fixedly connected to the inner wall of the side plate (107) of the bottom cover. A protruding rib (800) is provided at the connection. The bottom surface of the reinforcing rib (300) is fixedly connected to the bottom plate (106) of the bottom cover. The end of the reinforcing rib (300) fixedly connected to the second sliding bearing (102) of the bottom cover points to the center of the second sliding bearing (102) of the bottom cover, so that the arrangement of the four reinforcing ribs (300) presents a pattern centered on the second sliding bearing (101) of the bottom cover. The bearing (102) radiates outward from the center; two reinforcing ribs (300) are fixedly connected to the third sliding bearing (103) of the bottom cover. One end of the reinforcing rib (300) is fixedly connected to the outer wall of the third sliding bearing (103) of the bottom cover, and the other end is fixedly connected to the inner wall of the side plate (107) of the bottom cover. A protruding rib (800) is provided at the connection. The bottom surface of the reinforcing rib (300) is fixedly connected to the bottom plate of the bottom cover (100). The end of the reinforcing rib (300) fixedly connected to the third sliding bearing (103) of the bottom cover points to the center of the third sliding bearing (103) of the bottom cover, so that the arrangement of the two reinforcing ribs (300) presents a shape with the third sliding bearing (103) of the bottom cover as the center. The center radiates outward; three reinforcing ribs (300) are fixedly connected to the fourth sliding bearing (104) of the bottom cover. One end of the reinforcing rib (300) is fixedly connected to the outer wall of the fourth sliding bearing (104) of the bottom cover, and the other end is fixedly connected to the inner wall of the side plate (107) of the bottom cover. A protruding rib (800) is provided at the connection. The bottom surface of the reinforcing rib (300) is fixedly connected to the bottom plate (106) of the bottom cover. The end of the reinforcing rib (300) fixedly connected to the fourth sliding bearing (104) of the bottom cover points to the center of the fourth sliding bearing (104) of the bottom cover, so that the arrangement of the three reinforcing ribs (300) radiates outward from the center of the fourth sliding bearing (104) of the bottom cover.The reinforcing rib (300) starts at the outer wall of the sliding bearing and the closer to the sliding bearing, the denser the distribution of the reinforcing rib (300). This design adapts to the objective law of stress attenuation, so that the key stress points of the sliding bearing can be effectively strengthened. The end point of the reinforcing rib (300) is the protruding rib (800) on the bottom cover side plate (107). The reinforcing rib (300) radiates outward and is distributed along the "force transmission path". Like an "arm", it "pulls" the force on the sliding bearing to the bottom cover side plate (107) to avoid local stress concentration. This design can effectively protect the sliding bearing. At the same time, a protruding rib (800) is added at the connection between the reinforcing rib (300) and the bottom cover side plate (107). The protruding rib (800) increases the contact area and disperses the "local high pressure stress" at the connection between the rib and the wall to a larger area, avoiding cracking of the side plate due to stress concentration.

[0025] Furthermore, the connecting hole (400) on the bottom cover (100) is a bolt hole. The connecting hole (400) is located on the protrusion (800) on the side plate (107) of the bottom cover. The height of the protrusion (800) is the same as the height of the side plate (107) of the bottom cover. The depth of the connecting hole (400) is less than the height of the side plate (107) of the bottom cover. An oil drain hole (105) is also provided on the inner wall side of the bottom cover (100) for draining the lubricating oil inside the housing.

[0026] like Figure 3 As shown, the top cover (200) includes a first sliding bearing (201), a second sliding bearing (202), a third sliding bearing (203), reinforcing ribs (300), and connecting holes (400). The top cover (200) is internally connected to the outer wall of the sliding bearings and the inner wall of the top cover side plate (205) by radial reinforcing ribs (300). The reinforcing ribs (300) are elongated, and their top surfaces are fixedly connected to the top plate (204) of the top cover. The outline of the top cover (200) matches the outline of the bottom cover (100). The radial reinforcing ribs (300) effectively disperse the torque and vibration generated during the operation of the planetary gear set, not only improving the rigidity and strength of the sliding bearings inside the top cover (200) but also preventing deformation of the sliding bearings.

[0027] Furthermore, the internal structure of the top cover (200) from right to left consists of a first sliding bearing (201), a second sliding bearing (202), and a third sliding bearing (203). Each of the three bearings has a groove (700) corresponding to the output shaft and the mounting of the planetary gears and sun gear in the planetary gear set. Reinforcing ribs (300) are provided around each of the three bearings, with the direction of the reinforcing ribs (300) pointing from the center of the sliding bearing towards the inner wall of the top cover side plate (205). The positions of the top cover first sliding bearing (201), top cover second sliding bearing (202), and top cover third sliding bearing (203) correspond to the positions of the bottom cover first sliding bearing (101), bottom cover second sliding bearing (102), and bottom cover third sliding bearing (103) on the bottom cover (100). The positioning of the sliding bearings not only ensures the coaxiality of the gears and reduces transmission deviation, but also helps the operator to install the gears more correctly inside the housing.

[0028] Preferably, the top cover (200) is provided with twenty-four reinforcing ribs (300), and ten reinforcing ribs (300) are fixedly connected to the first sliding bearing (201) of the top cover. One end of the reinforcing rib (300) is fixedly connected to the outer wall of the first sliding bearing (201) of the top cover, and the other end is fixedly connected to the inner wall of the side plate (205) of the top cover. A protruding rib (800) is provided at the connection. The top surface of the reinforcing rib (300) is fixedly connected to the top plate (204) of the top cover. The reinforcing rib (300) is fixedly connected to the first sliding bearing (205) of the top cover. One end of the sliding bearing (201) is fixedly connected to the center of the first sliding bearing (201) of the top cover, so that the arrangement of the ten reinforcing ribs (300) radiates outward from the first sliding bearing (201) of the top cover as the center; six reinforcing ribs (300) are fixedly connected to the second sliding bearing (202) of the top cover. One end of the reinforcing rib (300) is fixedly connected to the outer wall of the second sliding bearing (202) of the top cover, and the other end is fixedly connected to the inner wall of the side plate (205) of the top cover. The connection is provided with a protrusion. The top surface of the rib (800) and the reinforcing rib (300) is fixedly connected to the top plate (204) of the top cover. One end of the reinforcing rib (300) is fixedly connected to the second sliding bearing (202) of the top cover and points to the center of the second sliding bearing (202) of the top cover, so that the arrangement of the six reinforcing ribs (300) radiates outward from the center of the second sliding bearing (202) of the top cover. Eight reinforcing ribs (300) are fixedly connected to the third sliding bearing (203) of the top cover. One end of the reinforcing rib (300) is fixedly connected to the top cover. The outer wall of the third sliding bearing (203) is fixedly connected, and the other end is fixedly connected to the inner wall of the top cover side plate (205). A protruding ridge (800) is provided at the connection. The top surface of the reinforcing rib (300) is fixedly connected to the top plate (204) of the top cover. One end of the reinforcing rib (300) fixedly connected to the third sliding bearing (203) of the top cover points to the center of the third sliding bearing (203) of the top cover, so that the arrangement of the eight reinforcing ribs (300) radiates outward from the third sliding bearing (201) of the top cover. One end of all the reinforcing ribs (300) radiating outward is fixedly connected to the protruding ridge (800) on the top cover side plate (205). The reinforcing rib (300) starts at the outer wall of the sliding bearing and the closer to the sliding bearing, the denser the distribution of the reinforcing rib (300). This design adapts to the objective law of stress attenuation, so that the key stress points of the sliding bearing can be effectively strengthened. The end point of the reinforcing rib (300) is the protruding rib (800) on the top cover side plate (205). The reinforcing rib (300) radiates outward and is distributed along the "force transmission path". Like an "arm", it "pulls" the force on the sliding bearing to the top cover side plate (205) to avoid local stress concentration. This design can effectively protect the sliding bearing. At the same time, a protruding rib (800) is added at the connection between the reinforcing rib (300) and the top cover side plate (205). The protruding rib (800) increases the contact area and disperses the "local high pressure stress" at the connection between the rib and the wall to a larger area, avoiding cracking of the side plate due to stress concentration.

[0029] Furthermore, the connecting hole (400) on the top cover (200) is a bolt hole. The connecting hole (400) is located on the protruding ridge (800) on the side plate (205) of the top cover. The height of the protruding ridge (800) is the same as the height of the side plate (205) of the top cover. The connecting hole (400) is a through hole with a depth equal to the height of the side plate (205) of the top cover. The position and size of the connecting hole (400) on the top cover (200) match the position and size of the connecting hole (400) on the bottom cover (100).

[0030] Furthermore, the connector (500) is a bolt, and the length of the connecting segment of the connector (500) matches the sum of the depths of the connecting holes (400) of the bottom cover (100) and the top cover (200).

[0031] Preferably, the reinforcing rib (300) is made of low-carbon steel.

[0032] In use, first, the motor is connected to the gearbox through the through hole inside the fourth sliding bearing (104) of the bottom cover to determine the position of the bottom cover (100). Then, the planetary gear set and the output shaft are installed into the bearing holes on the corresponding sliding bearings. After the planetary gear set on the bottom cover (100) is installed, the top cover (200) is placed on the bottom cover (100). Since the positions of the first sliding bearing (201), the second sliding bearing (202), the third sliding bearing (203) and the connecting hole (400) on the top cover (200) match the positions of the first sliding bearing (101), the second sliding bearing (102), the third sliding bearing (103) and the connecting hole (400) on the bottom cover (100), the installation of the top cover (200) will not cause deviation that could damage the gear set. After the top cover (200) is placed on the bottom cover (100), the connector (500) is passed through the connecting holes (400) on the top cover (200) and the bottom cover (100) from top to bottom to fix the top cover (200) and the bottom cover (100) together.

[0033] As described above, compared with the prior art, the high-strength gearbox housing of this utility model has multiple reinforcing ribs radiating outward from the center of the sliding bearing on the outer wall of the sliding bearing, with one end of the reinforcing ribs fixedly connected to the inner wall of the housing. This new design can effectively disperse the torque and vibration generated during the operation of the planetary gear set, and disperse the concentrated stress applied to the shaft hole to the edge of the housing through the reinforcing ribs. This design not only improves the rigidity and strength of the sliding bearing part of the housing, but also prevents the sliding bearing from deforming.

[0034] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A high-strength gearbox housing, comprising a bottom cover (100), a top cover (200) for covering the bottom cover (100), a connecting hole (400), and a connector (500), wherein the connector (500) passes through the connecting hole (400) to connect the bottom cover (100) and the top cover (200) together to form the gearbox housing, characterized in that: It also includes several long strip-shaped reinforcing ribs (300) and sliding bearings. The bottom cover (100) is provided with sliding bearings, which are fixedly connected to the bottom plate (106) of the bottom cover. The outer wall of the sliding bearing is fixedly connected to one end of the reinforcing rib (300), and the other end of the reinforcing rib (300) is fixedly connected to the side plate (107) of the bottom cover. The bottom surface of the reinforcing rib (300) is fixedly connected to the bottom plate (106) of the bottom cover. The top cover (200) is provided with sliding bearings, which are fixedly connected to the top plate (204) of the top cover. The outer wall of the sliding bearing is fixedly connected to one end of the reinforcing rib (300), and the other end of the reinforcing rib (300) is fixedly connected to the inner wall of the side plate (205) of the top cover. The top surface of the reinforcing rib (300) is fixedly connected to the top plate (204) of the top cover. Several reinforcing ribs (300) are connected to the outer wall of the sliding bearing.

2. The high-strength gearbox housing as described in claim 1, characterized in that: The sliding bearings include: a first sliding bearing (101) for the bottom cover, a second sliding bearing (102) for the bottom cover, a third sliding bearing (103) for the bottom cover, a fourth sliding bearing (104) for the bottom cover, a first sliding bearing (201) for the top cover, a second sliding bearing (202) for the top cover, and a third sliding bearing (203) for the top cover; the positions of the first sliding bearing (101) for the bottom cover, the second sliding bearing (102) for the bottom cover, and the third sliding bearing (103) for the bottom cover correspond to those of the first sliding bearing (201) for the top cover, the second sliding bearing (202) for the top cover, and the third sliding bearing (203) for the top cover.

3. The high-strength gearbox housing as described in claim 1, characterized in that: The bottom plate of the bottom cover (100) is provided with a first sliding bearing (101), a second sliding bearing (102), a third sliding bearing (103), and a fourth sliding bearing (104). The first sliding bearing (101) and the fourth sliding bearing (104) are provided with through holes (600), and the second sliding bearing (102) and the third sliding bearing (103) are provided with grooves (700). One end of the reinforcing rib (300) is fixedly connected to the outer wall of the sliding bearing and points to the center of the sliding bearing. The other end is fixedly connected to the inner wall of the side plate (107) of the bottom cover. A protruding rib (800) is provided at the connection. The height of the protruding rib (800) is the same as the height of the side plate (107) of the bottom cover.

4. The high-strength gearbox housing as described in claim 1, characterized in that: The top plate of the top cover (200) is provided with a first sliding bearing (201), a second sliding bearing (202) and a third sliding bearing (203). The first sliding bearing (201), the second sliding bearing (202) and the third sliding bearing (203) are provided with grooves (700). One end of the reinforcing rib (300) is fixedly connected to the outer wall of the sliding bearing and points to the center of the sliding bearing. The other end is fixedly connected to the inner wall of the side plate (205) of the top cover. A protruding rib (800) is provided at the connection. The height of the protruding rib (800) is the same as the height of the side plate (205) of the top cover.

5. The high-strength gearbox housing as described in claim 1, characterized in that: The bottom cover (100) is provided with seventeen reinforcing ribs (300); eight reinforcing ribs (300) are connected to the outer wall of the first sliding bearing (101) of the bottom cover; four reinforcing ribs (300) are connected to the outer wall of the second sliding bearing (102) of the bottom cover; two reinforcing ribs (300) are connected to the outer wall of the third sliding bearing (103) of the bottom cover; and three reinforcing ribs (300) are connected to the outer wall of the fourth sliding bearing (104) of the bottom cover.

6. The high-strength gearbox housing as described in claim 1, characterized in that: The top cover (200) is provided with twenty-four reinforcing ribs (300); ten reinforcing ribs (300) are connected to the outer wall of the first sliding bearing (201) of the top cover; six reinforcing ribs (300) are connected to the outer wall of the second sliding bearing (202) of the top cover; and eight reinforcing ribs (300) are connected to the outer wall of the third sliding bearing (203) of the top cover.

7. The high-strength gearbox housing as described in claim 1, characterized in that: The reinforcing rib (300) is made of low-carbon steel.

8. The high-strength gearbox housing as described in claim 1, characterized in that: The connecting hole (400) is a bolt hole, and all connecting holes (400) are located on the protruding ridge (800); the depth of the connecting hole (400) on the bottom cover (100) is less than the height of the inner wall of the bottom cover (100), and the depth of the connecting hole (400) on the top cover (200) is equal to the height of the inner wall of the top cover (200); the position and size of the connecting hole (400) on the bottom cover (100) match the position and size of the connecting hole (400) on the top cover (200).

9. The high-strength gearbox housing as described in claim 1, characterized in that: The connector (500) is a bolt, and the length of the connecting section of the connector (500) matches the sum of the depths of the connecting holes (400) of the bottom cover (100) and the top cover (200).

10. The high-strength gearbox housing as described in claim 1, characterized in that: The inner wall side of the bottom cover side plate (107) is provided with an oil drain hole (105) for draining lubricating oil.

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