Clamping and fixing device for automobile main speed reducer shell

Abstract

The utility model relates to the technical field of main speed reducer shell fixing, in particular to a clamping and fixing device for an automobile main speed reducer shell, which comprises a fixing seat and a sliding seat, base plates are fixed on the tops of the fixing seat and the sliding seat, a top plate is fixed on the outer side of the top of each base plate, and a plurality of connecting strips are arranged on the top of each top plate at equal intervals. One end of each connecting strip is provided with a fixing hole, each connecting strip is provided with a kidney-shaped hole, a plurality of pins at equal intervals are fixed to the positions, corresponding to the connecting strips, of the top of the top plate, the pins are connected with the kidney-shaped holes in a limiting and sleeving mode, the main reducer shell is placed on the base plate on the inner side of the top plate, the fixing holes correspond to the workpiece holes, and fixing bolts are connected into the fixing holes in a threaded mode. According to the fixing device, the angle and the extending length of the connecting strip can be freely adjusted within the range of the pin column and the kidney-shaped hole, the base plate and the top plate are matched for use, main speed reducer shells with different diameter sizes can be clamped and fixed, and the use flexibility is improved.

Description

Technical Field

[0001] This utility model relates to the field of main reducer housing fixing technology, specifically to a clamping and fixing device for automotive main reducer housing. Background Technology

[0002] The final drive (DWD) is a key component in a car's transmission system that reduces engine speed, increases torque, and changes the direction of power transmission. The engine transmits power to the drive gear via the gearbox. The drive gear rotates the driven gear. Due to the gear ratio, the engine speed decreases and the torque increases. The power, after reduction and torque amplification, is distributed to the left and right wheels via the differential. Currently, the final drive and rear axle differential in cars are generally integrated together.

[0003] In the process of realizing this utility model, the inventors discovered that:

[0004] When machining the housing of the main reducer, it needs to be fixed. Since the main reducer of different models has different sizes and diameters, the corresponding clamping and fixing components also need to be replaced when changing the machining model, which reduces the flexibility of use. At the same time, replacing the clamping and fixing components affects the machining efficiency. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, this utility model proposes a clamping and fixing device for the housing of an automobile main reducer.

[0006] Therefore, the technical solution of this utility model is as follows: a clamping and fixing device for an automotive main reducer housing, including a fixed base and a slide base. The main reducer housing is fixed above the fixed base and the slide base. A lip is fixed on the outer side of the bottom of the main reducer housing, and a workpiece hole is opened on the lip. A pad is fixed on the top of both the fixed base and the slide base. A top plate is fixed on the outer side of the top of the pad. Multiple connecting strips with equal spacing are provided on the top of the top plate. A fixing hole is opened at one end of the connecting strip. A waist-shaped hole is opened on the connecting strip. Multiple pins with equal spacing are fixed on the top of the top plate corresponding to the position of the connecting strip. The pins are connected to the waist-shaped hole in a limiting sleeve. The main reducer housing is placed on the pad on the inner side of the top plate. The fixing hole corresponds to the workpiece hole. A fixing bolt is threaded into the fixing hole. The fixing bolt extends into the workpiece hole at the corresponding position.

[0007] Furthermore, both the top plate and the pad are designed with an arc shape; the arc shape can be adapted to the bottom structural features of the main reducer housing.

[0008] Furthermore, a base is installed below the fixed seat and the slide. The fixed seat is fixed at the middle position on the right side of the top of the base, and the slide is installed on the base to the left of the fixed seat. Mounting holes are provided at the four corners of the base. The base provides support for the installation of the slide and the fixed seat.

[0009] Furthermore, a bearing seat is installed on the middle position of the side of the fixed base facing the slide, and a lead screw is installed on the bearing seat. A connecting hole is opened on the slide corresponding to the position of the lead screw. The left end of the lead screw passes through the connecting hole and is threadedly connected to the slide. A motor is installed on the top left side of the base corresponding to the left end of the lead screw. The output end of the motor is fixedly connected to the lead screw at the corresponding position. The lead screw is connected to the slide, and can then be moved by the motor drive, making the control operation simple and convenient.

[0010] Furthermore, fixed columns are fixed on the bases on both the front and rear sides of the fixed seat, and the pads at the fixed seat positions are fixed to the corresponding fixed columns. Movable columns are installed on the bases on both the front and rear sides of the slide, and the pads at the slide positions are fixed to the corresponding movable columns. The combination of movable columns and fixed columns provides better support and ensures the stable support of the main reducer housing.

[0011] Furthermore, a limiting groove parallel to the lead screw is provided on the top of the base corresponding to the position of the slide block and the movable column. The bottom of the slide block and the movable column both slide and support each other within the limiting groove. The limiting groove can restrict the movement of the slide block and the movable column, so that they can only move in a straight line parallel to the lead screw and cannot rotate.

[0012] Furthermore, a fixing block is fixed to the top of the base on both the front and rear sides of the motor, and a positioning rod is fixed between the fixing block and the corresponding fixing column. A through hole is opened on the movable column corresponding to the position of the positioning rod, and the positioning rod passes through the through hole to form a sliding support between the movable column and the positioning rod. The positioning rod can distribute the supporting force of the lead screw, reduce the possibility of deformation of the lead screw under force, and at the same time, the bottom of the slide and the movable column abut against the bottom of the limiting slide groove for bottom support.

[0013] Furthermore, side plates are fixed on both the front and rear sides of the top of the base, and a push-pull cover plate is installed between the side plates on the front and rear sides corresponding to the position above the lead screw. The push-pull cover plate is arranged in multiple layers, and the left and right ends of the push-pull cover plate are fixed to the base and the slide at the corresponding positions. The push-pull cover plate is also provided between the slide and the fixed seat. The push-pull cover plate can prevent dust and chips and avoid affecting the movement of the slide.

[0014] Beneficial effects: This utility model utilizes a connecting strip in conjunction with a fixing seat and a slide. The connecting strip can be adjusted in angle and extension length within the range of the pin and the oblong hole. Combined with a pad and a top plate, as long as the pad can support the main reducer housing, the connecting strip can fix the main reducer housing. This allows for clamping and fixing of main reducer housings of different diameters, improving flexibility. The arc-shaped structure of the pad and top plate adapts to the bottom structure of the main reducer housing. Furthermore, the fixing bolts are threaded to the connecting strip, requiring only partial extension into the workpiece hole of the main reducer housing, eliminating the need for modification of existing workpiece holes. The slide is driven by a lead screw, facilitating position adjustment to accommodate main reducer housings of different diameters. The positioning rod and limiting groove ensure stable support for the main reducer housing. The push-pull cover protects the lead screw, preventing foreign objects from entering between the lead screw and the slide and affecting its movement. Foreign objects falling onto the push-pull cover are also easily collected and cleaned. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention.

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the slide block configuration of this utility model.

[0018] Figure 4 This is a schematic diagram of the top plate configuration of this utility model.

[0019] Figure 5 This is a schematic diagram of the connecting strip configuration of this utility model.

[0020] Figure 6 This is a schematic diagram of the fixing of the main reducer housing of this utility model.

[0021] The figure shows: 1. Base; 2. Fixed seat; 3. Slide; 4. Lead screw; 5. Shaft seat; 6. Connecting hole; 7. Motor; 8. Pad; 9. Top plate; 10. Connecting strip; 11. Waist-shaped hole; 12. Fixed hole; 13. Pin; 14. Fixing bolt; 15. Mounting hole; 16. Fixed column; 17. Movable column; 18. Positioning rod; 19. Through hole; 20. Limiting groove; 21. Fixed block; 22. Side plate; 23. Push-pull cover plate; 24. Main reducer housing; 25. Lip; 26. Workpiece hole. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings, but this embodiment should not be construed as a limitation of this utility model.

[0023] This utility model is as follows Figures 1 to 6 As shown:

[0024] A clamping and fixing device for an automotive main reducer housing includes a base 1. A fixing seat 2 is fixed at the middle position of the right side of the top of the base 1. A slide 3 is installed on the base 1 to the left of the fixing seat 2. A pad 8 is fixed to the top of both the fixing seat 2 and the slide 3. A top plate 9 is fixed to the outer side of the top of the pad 8. Both the top plate 9 and the pad 8 are arc-shaped structures. Multiple connecting strips 10 with equal spacing are provided on the top of the top plate 9. One end of each connecting strip 10 has a fixing hole 12, and the connecting strip 10 has an oblong hole 11. Multiple pins 13 at equal intervals are fixed at the top of the plate 9 corresponding to the position of the connecting strip 10. The cross-section of the pins 13 is T-shaped. The pins 13 are connected to the waist-shaped hole 11 for limiting sleeve. The main reducer housing 24 is placed on the pad 8 inside the top plate 9. The bottom outer side of the main reducer housing 24 is fixed with a lip 25. The lip 25 has a workpiece hole 26. The fixing hole 12 corresponds to the workpiece hole 26. The fixing hole 12 is threaded with a fixing bolt 14. The fixing bolt 14 extends into the workpiece hole 26 at the corresponding position.

[0025] During fixing, the position of the slide 3 is adjusted according to the diameter of the main reducer housing 24 so that the lip 25 of the main reducer housing 24 can be placed and supported on the pad 8 at the positions of the fixing seat 2 and the slide 3. Then, the position of the connecting strip 10 is adjusted according to the connection relationship between the pin 13 and the oblong hole 11 so that the fixing hole 12 corresponds to the workpiece hole 26. Then, the fixing bolt 14 is screwed into the fixing hole 12, and the bottom part of the fixing bolt 14 extends into the workpiece hole 26. The bottom of the main reducer housing 24 is supported by the pad 8, and the top is fixed by the fixing bolt 14, forming a reliable clamping and fixing. Due to the setting of the oblong hole 11, the connecting strip 10 can be adjusted in direction and extension length at will within the limit range of the pin 13 and the oblong hole 11. With the arc-shaped pad 8 and the top plate 9, the main reducer housing 24 of different diameters can be fixed within the support range of the pad 8, and the flexibility of use is improved.

[0026] In this embodiment, a bearing 5 is installed on the middle position of the side of the fixed base 2 facing the slide 3, and a lead screw 4 is installed on the bearing 5. A connecting hole 6 is opened on the slide 3 corresponding to the position of the lead screw 4. The left end of the lead screw 4 passes through the connecting hole 6 and is threadedly connected to the slide 3. A motor 7 is installed on the top left side of the base 1 corresponding to the left end of the lead screw 4. The output end of the motor 7 is fixedly connected to the lead screw 4 at the corresponding position.

[0027] In this technical solution, when the slide 3 moves, the motor 7 can be controlled to work, which in turn drives the lead screw 4 to rotate. Then, by utilizing the threaded connection between the lead screw 4 and the slide 3, the slide 3 is pushed to move along the lead screw 4, thereby adjusting the distance between the slide 3 and the fixed seat 2 to meet the installation requirements of the main reducer housing 24 with different diameters. At the same time, after the fixing bolt 14 fixes the main reducer housing 24, the lead screw 4 rotates in the opposite direction, causing the slide 3 to move away from the fixed seat 2. At this time, the movement of the slide 3 tightens all or part of the connecting strips 10, and the main reducer housing 24 obtains outward pulling force in multiple radial directions, which restricts the axial rotation of the main reducer housing 24 caused by the elongated hole 11 structure, thus forming a reliable fixation.

[0028] In this embodiment, a fixed column 16 is fixed on the base 1 on both the front and rear sides of the fixed seat 2. The pad 8 at the position of the fixed seat 2 is fixed to the fixed column 16 at the corresponding position. A movable column 17 is installed on the base 1 on both the front and rear sides of the slide 3. The pad 8 at the position of the slide 3 is fixed to the movable column 17 at the corresponding position. A limiting groove 20 parallel to the lead screw 4 is opened on the top of the base 1 corresponding to the position of the slide 3 and the movable column 17. The bottom of the slide 3 and the movable column 17 slide and support each other in the limiting groove 20.

[0029] In this technical solution, since the pad 8 and the top plate 9 are relatively long, corresponding fixed columns 16 and movable columns 17 are set up to support them together with fixed seats 2 and slide seats 3 to ensure stable support for the pad 8 and the top plate 9. At the same time, the limiting slide groove 20 can constrain the movement of the movable column 17 and the slide seat 3, so that they move linearly along the lead screw 4 without rotating.

[0030] In this embodiment, a fixing block 21 is fixed on the top of the base 1 on both the front and rear sides of the motor 7. A positioning rod 18 is fixed between the fixing block 21 and the corresponding fixing column 16. A through hole 19 is opened on the movable column 17 corresponding to the position of the positioning rod 18. The positioning rod 18 passes through the through hole 19 to form a sliding support between the movable column 17 and the positioning rod 18.

[0031] In this technical solution, the positioning rod 18 increases the stability of the slide block 3 when it moves, reduces the support burden of the lead screw 4, and cooperates with the movable column 17 to further ensure the linear movement of the slide block 3.

[0032] In this embodiment, side plates 22 are fixed on both the front and rear sides of the top of the base 1. A push-pull cover plate 23 is installed between the side plates 22 on the front and rear sides, corresponding to the position above the screw 4. The push-pull cover plate 23 is arranged in multiple layers. The left and right ends of the push-pull cover plate 23 are fixed to the base 1 and the slide 3 at the corresponding positions. The push-pull cover plate 23 is also provided between the slide 3 and the fixed seat 2. Mounting holes 15 are opened at the four corners of the base 1.

[0033] In this technical solution, the push-pull cover plate 23 can cover the lead screw 4 from top to bottom. During processing, it can cover the falling processing waste and debris, so as to avoid affecting the connection stability between the lead screw 4 and the slide block 3, and avoid falling into the limiting slide groove 20 to affect the movement of the movable column 17 and the slide block 3. The mounting hole 15 is used to fix the base 1.

[0034] Any aspects not described in detail in this specification are techniques well-known in the art.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clamping fixture for an automobile main reducer housing, comprising a fixed seat (2) and a sliding seat (3), a main reducer housing (24) being fixed above the fixed seat (2) and the sliding seat (3), a lip (25) being fixed on the outer side of the bottom of the main reducer housing (24), and a workpiece hole (26) being formed in the lip (25), characterized in that: The top of the fixed seat (2) and the slide (3) are both fixed with pads (8). The top plate (9) is fixed on the outer side of the top of the pad (8). The top of the top plate (9) is provided with multiple connecting strips (10) at equal intervals. One end of the connecting strip (10) is provided with a fixing hole (12). The connecting strip (10) is provided with a waist-shaped hole (11). The top of the top plate (9) is fixed with multiple pins (13) at equal intervals corresponding to the position of the connecting strip (10). The pins (13) are connected to the waist-shaped hole (11) in a limiting sleeve. The main reducer housing (24) is placed on the pad (8) inside the top plate (9). The fixing hole (12) corresponds to the workpiece hole (26). The fixing hole (12) is threaded with a fixing bolt (14). The fixing bolt (14) extends into the workpiece hole (26) at the corresponding position. ​ 2. The clamping fixture for the housing of the main reducer of an automobile as set forth in claim 1, wherein: Both the top plate (9) and the pad plate (8) are arc-shaped structures.

3. The clamping fixture for a housing of a main speed reducer of an automobile according to claim 1 or 2, characterized in that: A base (1) is installed below the fixed seat (2) and the slide (3). The fixed seat (2) is fixed at the middle position on the right side of the top of the base (1). The slide (3) is installed on the base (1) on the left side of the fixed seat (2). Mounting holes (15) are opened at the four corners of the base (1).

4. The clamping fixture for a housing of a main reducer of an automobile according to claim 3, wherein: A bearing seat (5) is installed on the middle position of the side facing the slide (3) of the fixed base (2). A lead screw (4) is installed on the bearing seat (5). A connecting hole (6) is opened on the slide (3) corresponding to the position of the lead screw (4). The left end of the lead screw (4) passes through the connecting hole (6) and is threadedly connected to the slide (3). A motor (7) is installed on the left side of the top of the base (1) corresponding to the left end of the lead screw (4). The output end of the motor (7) is fixedly connected to the lead screw (4) at the corresponding position.

5. The clamping fixture for a housing of a main reducer of an automobile according to claim 4, wherein: Fixed columns (16) are fixed on the base (1) on both the front and rear sides of the fixed seat (2). The pad (8) at the position of the fixed seat (2) is fixed to the fixed column (16) at the corresponding position. Movable columns (17) are installed on the base (1) on both the front and rear sides of the slide (3). The pad (8) at the position of the slide (3) is fixed to the movable column (17) at the corresponding position.

6. The clamping fixture for a housing of a main speed reducer of an automobile according to claim 5, characterized in that: The base (1) has a limiting groove (20) parallel to the lead screw (4) at the top corresponding to the slide (3) and the movable column (17). The bottom of the slide (3) and the movable column (17) slide against the limiting groove (20) for support.

7. The clamping fixture for a housing of a main reducer of an automobile according to claim 6, wherein: The base (1) on both sides of the motor (7) is fixed with a fixing block (21). A positioning rod (18) is fixed between the fixing block (21) and the corresponding fixing column (16). A through hole (19) is opened on the movable column (17) at the position corresponding to the positioning rod (18). The positioning rod (18) passes through the through hole (19) to form a sliding support between the movable column (17) and the positioning rod (18).

8. The clamping fixture for the housing of the main speed reducer of an automobile according to claim 4 or 5 or 6 or 7, characterized in that: The base (1) has side plates (22) fixed on both the front and rear sides. A push-pull cover plate (23) is installed between the side plates (22) on the front and rear sides, corresponding to the position above the screw (4). The push-pull cover plate (23) is arranged in multiple layers. The left and right ends of the push-pull cover plate (23) are fixed to the base (1) and the slide (3) at the corresponding positions. The push-pull cover plate (23) is also arranged between the slide (3) and the fixed seat (2).

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