Bushing press-fitting tool for gearbox shell

Abstract

The utility model discloses a bushing press-fitting tool for a gearbox shell in the technical field of gearbox production. The bushing press-fitting tool comprises a bottom plate. Vertical plates are symmetrically fixed to the two sides of the bottom plate, and lining press-fitting assemblies are symmetrically installed on the vertical plates. The lining press-fitting assembly comprises an air cylinder, a steel sleeve, an air cylinder head, a lining and a guide sleeve, a first mounting hole is formed in the bottom of the vertical plate, the steel sleeve is mounted in the first mounting hole, the air cylinder is fixed to one side of the vertical plate, and a telescopic rod of the air cylinder movably penetrates through the steel sleeve and is provided with the air cylinder head. A first shaft shoulder and a second shaft shoulder are arranged at one end of the air cylinder head, a lining is movably installed on the first shaft shoulder, and a guide sleeve is movably installed on the second shaft shoulder. And the gearbox shell is provided with a positioning pin hole. And the bottom plate is provided with a positioning pin which is movably inserted into the positioning pin hole. According to the tool, bushings on the two sides of the gearbox shell can be accurately installed at the same time, efficient production and installation quality are both considered, and cost increase and resource waste caused by installation deviation are effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of gearbox manufacturing technology, and in particular to a bushing press-fitting fixture for a gearbox housing. Background Technology

[0002] In the manufacturing process of the gearbox housing, the precise installation of the bushings is a crucial step in ensuring the stable and reliable operation of the gearbox. In existing technologies, such as... Figure 4 As shown, the gearbox housing has concentric bushing mounting holes on both sides, requiring bushings to be installed to support internal rotating components and reduce wear. However, current bushing mounting fixtures have significant limitations; they can only handle the installation of a single bushing at a time, resulting in low efficiency and making it difficult to meet the needs of large-scale production.

[0003] More seriously, if any bushing fails to be accurately positioned during installation, it can not only lead to abnormal wear of internal gearbox components but also cause irreversible physical damage to the gearbox housing, rendering the entire housing unusable and increasing production costs and resource waste. Therefore, there is an urgent need to develop a tooling technology capable of efficiently and accurately installing multiple bushings. Utility Model Content

[0004] The main objective of this invention is to provide a bushing press-fitting fixture for a gearbox housing, which addresses the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A bushing press-fit fixture for a gearbox housing includes a base plate covered with a silicone pad. Vertical plates are symmetrically fixed to both sides of the base plate, and bushing press-fit assemblies are symmetrically mounted on the vertical plates. Each bushing press-fit assembly includes a cylinder, a steel sleeve, a cylinder head, a bushing, and a guide sleeve. A first mounting hole is provided at the bottom of the vertical plate, and a steel sleeve is installed within the first mounting hole. A horizontally positioned cylinder is fixed to one side of the vertical plate, and the cylinder's extension rod movably passes through the steel sleeve and is fitted with a cylinder head. One end of the cylinder head has a first shoulder and a second shoulder. A bushing is movably mounted on the first shoulder, and a guide sleeve is movably mounted on the second shoulder. A gearbox housing is placed on the base plate, and a locating pin hole is provided along the edge of the gearbox housing. A locating pin is provided along the edge of the base plate, and the locating pin is movably inserted into the locating pin hole.

[0007] Furthermore, a second mounting hole is radially provided on the first shoulder, a movable block is installed at the opening of the second mounting hole, and a compression spring is installed between the movable block and the second mounting hole.

[0008] Furthermore, the diameter of the first shoulder is larger than the diameter of the second shoulder.

[0009] Furthermore, the guide sleeve is made of ABS plastic.

[0010] This utility model also includes other components that enable the bushing press-fitting fixture of the gearbox housing to function properly. These devices or components all employ conventional techniques in the art. Furthermore, devices and components not limited in this utility model all employ conventional techniques in the art, such as the cylinder and compression spring mentioned in this application. In specific implementation, appropriate equipment or component models can be selected according to the specific working scenario.

[0011] The working principle of this invention is as follows: The gearbox housing is placed upside down on a base plate, allowing the locating pins on the edge of the base plate to insert into the locating pin holes of the gearbox housing, enabling the gearbox housing to self-center around the locating pins. At this time, the bushing mounting holes on the left and right sides of the gearbox housing correspond one-to-one with the bushing pressing assemblies on the same side. Subsequently, the cylinders on both sides are activated simultaneously, extending at the same time. Under the guidance of the guide sleeves and the fine-tuning of the self-centering angle of the gearbox housing, the two bushings are installed synchronously and precisely. The guide sleeves fall under the gearbox housing under the push of the cylinders, and the two bushings are installed in the appropriate positions.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. High-efficiency installation: Supports simultaneous press-fitting of bushings on both sides of the gearbox housing, significantly improving production efficiency.

[0014] 2. Precise positioning: Through self-centering structure and guiding design, the bushing is installed precisely, avoiding cost waste and resource loss caused by positional deviation, and ensuring assembly quality and product reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a bushing press-fitting fixture for a gearbox housing according to this utility model.

[0016] Figure 2 This is an exploded view of the bushing press-fit assembly of this utility model.

[0017] Figure 3 This is a diagram showing the usage state of this utility model.

[0018] Figure 4 This is a schematic diagram of the gearbox housing of this utility model.

[0019] In the diagram: 1. Base plate; 2. Vertical plate; 21. First mounting hole; 3. Bushing press-fit assembly; 31. Cylinder; 32. Steel sleeve; 33. Cylinder head; 34. Bushing; 35. Guide sleeve; 4. Locating pin; 5. Silicone pad; 6. First shoulder; 7. Second shoulder; 8. Second mounting hole; 9. Compression spring; 10. Movable block; 11. Gearbox housing; 12. Locating pin hole; 13. Bushing mounting hole. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Example:

[0022] like Figures 1-4 As shown, a bushing press-fitting fixture for a gearbox housing includes a base plate 1, on which a silicone pad 5 is laid. Vertical plates 2 are symmetrically fixed on both sides of the base plate 1, and bushing press-fitting assemblies 3 are symmetrically installed on the vertical plates 2 on both sides. The bushing press-fitting assembly 3 includes a cylinder 31, a steel sleeve 32, a cylinder head 33, a bushing 34, and a guide sleeve 35. A first mounting hole 21 is opened at the bottom of the vertical plate 2, and a steel sleeve 32 is installed in the first mounting hole 21. A horizontally arranged cylinder 31 is fixed on one side of the vertical plate 2, and the telescopic rod of the cylinder 31 moves through the steel sleeve 32 and is fitted with a cylinder head 33. One end of the cylinder head 33 has a first shoulder 6 and a second shoulder 7. A bushing 34 is movably installed on the first shoulder 6, and a guide sleeve 35 is movably installed on the second shoulder 7. A gearbox housing 11 is placed on the base plate 1, and a locating pin hole 12 is provided along the edge of the gearbox housing 11. A locating pin 4 is provided along the edge of the base plate 1, and the locating pin 4 is movably inserted into the locating pin hole 12.

[0023] In addition, a second mounting hole 8 is provided radially on the first shoulder 6, a movable block 10 is installed at the opening of the second mounting hole 8, and a compression spring 9 is installed between the movable block 10 and the second mounting hole 8.

[0024] Specifically, the diameter of the first shoulder 6 is larger than the diameter of the second shoulder 7. The guide sleeve 35 is made of ABS plastic.

[0025] The working principle of this utility model's bushing press-fit fixture for a gearbox housing is as follows: The gearbox housing 11 is placed upside down on the base plate 1, so that the locating pin 4 on the edge of the base plate 1 is inserted into the locating pin hole 12 of the gearbox housing 11, and the gearbox housing 11 can rotate around the locating pin 4 for self-centering. At this time, the bushing mounting holes 13 on the left and right sides of the gearbox housing 11 correspond one-to-one with the bushing press-fit assembly 3 on the same side. Subsequently, the cylinders 31 on both sides are activated simultaneously, and the cylinders 31 extend simultaneously. Under the guidance of the guide sleeve 35 and the fine adjustment of the self-centering angle of the gearbox housing 11, the two bushings 34 are installed synchronously and accurately. The guide sleeve 35 falls under the gearbox housing 11 under the push of the cylinder 31, and the two bushings 34 are installed in the appropriate position.

[0026] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A bushing press-fitting fixture for a gearbox housing, comprising a base plate (1), wherein a silicone pad (5) is laid on the base plate (1), characterized in that: The base plate (1) is symmetrically fixed with upright plates (2) on both sides, and bushing pressing assemblies (3) are symmetrically installed on the upright plates (2) on both sides; the bushing pressing assembly (3) includes a cylinder (31), a steel sleeve (32), a cylinder head (33), a bushing (34) and a guide sleeve (35). The bottom of the upright plate (2) is provided with a first mounting hole (21), and a steel sleeve (32) is installed in the first mounting hole (21). A horizontally arranged cylinder (31) is fixed on one side of the upright plate (2), and the telescopic rod of the cylinder (31) moves through it. The steel sleeve (32) is fitted with a cylinder head (33); one end of the cylinder head (33) is provided with a first shoulder (6) and a second shoulder (7), a bushing (34) is movably installed on the first shoulder (6), and a guide sleeve (35) is movably installed on the second shoulder (7); a gearbox housing (11) is placed on the base plate (1), and a positioning pin hole (12) is provided on the edge of the gearbox housing (11); a positioning pin (4) is provided on the edge of the base plate (1), and the positioning pin (4) is movably inserted into the positioning pin hole (12).

2. The bushing press-fitting fixture for the gearbox housing according to claim 1, characterized in that: A second mounting hole (8) is provided radially on the first shoulder (6), a movable block (10) is installed at the opening of the second mounting hole (8), and a compression spring (9) is installed between the movable block (10) and the second mounting hole (8).

3. The bushing press-fitting fixture for the gearbox housing according to claim 1, characterized in that: The diameter of the first shoulder (6) is greater than the diameter of the second shoulder (7).

4. The bushing press-fitting fixture for the gearbox housing according to claim 1, characterized in that: The guide sleeve (35) is made of ABS plastic.

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