Electric automobile electric drive gear box assembly structure

Abstract

The utility model discloses an electric automobile electric drive gear box assembly structure, including gear box main part, gear box main part includes box, the upper and lower sides of box are equipped with apron, is equipped with the connecting sleeve on the apron, is equipped with fixed block in the connecting sleeve inside, is equipped with fixed groove in fixed block, is equipped with fixed spring in fixed groove, is equipped with fixed link in one end of fixed spring, is provided with the connecting groove that cooperates with the connecting sleeve on the box, is provided with the fixed hole that cooperates with fixed link in the connecting groove, is equipped with transmission shaft on the box, is equipped with the sliding slot on transmission shaft, is equipped with detection device on the box, and the device cooperates through the connecting sleeve and the connecting groove, and fixed link stretches into fixed hole under the action of fixed spring, and combines and inserts the rod locking, realizes the firm connection of apron and box, and whether the transmission shaft is inclined is detected through detection device.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and more specifically, to an assembly structure for an electric drive gearbox for electric vehicles. Background Technology

[0002] The electric drive gearbox assembly structure of an electric vehicle is a key component assembly that transmits the power of the motor to the wheels. It is indispensable in the electric vehicle drive system. It is mainly composed of parts such as gears, shafts, and housings. It can convert the high-speed rotational motion of the motor into the torque and speed required by the wheels, allowing the car to accelerate or decelerate smoothly, just like the gearbox of a traditional car, but more adapted to the working characteristics of the motor.

[0003] In existing technologies, the gearbox cover plate is not firmly connected to the gearbox body and is prone to loosening due to vibration, affecting the sealing performance; the installation accuracy of the drive shaft is difficult to detect quickly, which may lead to poor power transmission; and the rear end faces of the connecting parts are not flush, affecting the overall structural stability. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides an electric drive gearbox assembly structure for electric vehicles to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an electric drive gearbox assembly structure for an electric vehicle, comprising a gearbox body, the gearbox body including a housing, cover plates provided on the upper and lower sides of the housing, connecting sleeves provided on the cover plates, a fixing block fixedly provided inside the connecting sleeve, a fixing groove provided inside the fixing block, a fixing spring fixedly provided inside the fixing groove, a fixing rod provided at one end of the fixing spring, a connecting groove provided on the housing to cooperate with the connecting sleeve, a fixing hole provided inside the connecting groove to cooperate with the fixing rod, a drive shaft provided on the housing, a sliding groove provided on the drive shaft, and a detection device provided on the housing.

[0008] The present invention is further configured such that a mounting plate is provided on one side of the fixing block, an insertion rod is provided on the mounting plate, a fixing plate is provided on the fixing rod, and an insertion hole is provided on the fixing plate to cooperate with the insertion rod, so as to facilitate the stabilization of the position of the fixing rod.

[0009] The present invention is further configured such that an installation rod is slidably provided between the fixing block and the connecting sleeve, one end of the installation rod is flush with one end of the connecting sleeve, and the other end is fixedly connected to the mounting plate, so as to facilitate the movement of the mounting plate.

[0010] The present invention is further configured such that an installation piece is fixedly provided on the installation rod, and an installation spring is provided between the installation piece and the connecting sleeve. The installation spring is in a stretched state, which facilitates the movement and resetting of the installation rod.

[0011] The present invention is further configured such that the detection device includes a movable sleeve, the movable sleeve is provided with a movable groove, the movable groove is provided with a movable block, the movable block is provided with a connecting rod, the bottom of the connecting rod is provided with a ball bearing, the ball bearing abuts against the sliding groove, and the movable sleeve is provided with a movable ring to facilitate detection of whether the transmission shaft is tilted.

[0012] The present invention is further provided with a movable disk fixed on one side of the movable sleeve to facilitate moving the position of the movable sleeve.

[0013] The present invention is further configured such that a pressing plate is fixedly provided circumferentially on the inner wall of the movable ring, and the pressing plate corresponds to the position of the movable groove, so as to facilitate pressing the movable block and inspecting the cheap transmission shaft.

[0014] The present invention is further configured such that a positioning rod is threadedly connected to the housing, and a positioning hole is provided on the movable disk to cooperate with the positioning rod, so as to facilitate the movement of the movable disk and the movable sleeve.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides an electric drive gearbox assembly structure for electric vehicles, which has the following advantages:

[0017] 1. The device uses a connecting sleeve to engage with a connecting groove. The fixing rod extends into the fixing hole under the action of the fixing spring and is locked with the insertion rod, thus achieving a firm connection between the cover plate and the box. Pressing the installation rod unlocks the device, facilitating quick disassembly and maintenance.

[0018] 2. The detection device utilizes the cooperation between the ball bearings and the slide groove to visually determine whether the drive shaft is tilted by observing the change in resistance of the moving sleeve, thus quickly detecting the installation accuracy.

[0019] 3. The overall structure is adapted to the assembly scenario of electric vehicle electric drive gearboxes, improving assembly efficiency, connection reliability and testing convenience, and ensuring smooth power transmission of the gearbox. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an electric drive gearbox assembly structure for an electric vehicle according to the present invention.

[0021] Figure 2 This is an exploded view of the main body of the gearbox in this utility model;

[0022] Figure 3 This is a cross-sectional view of the connecting sleeve in this utility model;

[0023] Figure 4 for Figure 3 A magnified schematic diagram of a portion of the structure of A in the diagram;

[0024] Figure 5 This is a cross-sectional view of the detection device in this utility model.

[0025] In the diagram: 1. Gearbox body; 2. Gearbox housing; 3. Cover plate; 4. Connecting sleeve; 5. Fixing block; 6. Fixing groove; 7. Fixing spring; 8. Fixing rod; 9. Connecting groove; 10. Fixing hole; 11. Drive shaft; 12. Slide groove; 13. Mounting plate; 14. Insertion rod; 15. Fixing plate; 16. Insertion hole; 17. Mounting rod; 18. Mounting piece; 19. Mounting spring; 20. Moving sleeve; 21. Movable groove; 22. Movable block; 23. Connecting rod; 24. Ball bearing; 25. Moving ring; 26. Moving disc; 27. Extrusion plate; 28. Positioning rod; 29. ​​Positioning hole. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5An electric drive gearbox assembly structure for an electric vehicle includes a gearbox body 1, which includes a housing 2. The housing 2 has cover plates 3 on its upper and lower sides. A connecting sleeve 4 is provided on the cover plate 3. A fixing block 5 is fixedly installed inside the connecting sleeve 4. A fixing groove 6 is provided inside the fixing groove 6. A fixing spring 7 is fixedly installed inside the fixing groove 6. A fixing rod 8 is provided at one end of the fixing spring 7. A connecting groove 9 is provided on the housing 2 to mate with the connecting sleeve 4. A fixing hole 10 is provided in the connecting groove 9 to mate with the fixing rod 8. A drive shaft 11 is provided on the housing 2. A sliding... The groove 12 and the box 2 are equipped with a detection device. The fixing block 5 is equipped with a mounting plate 13 on one side. The mounting plate 13 is equipped with an insertion rod 14. The fixing rod 8 is equipped with a fixing plate 15. The fixing plate 15 is provided with an insertion hole 16 that cooperates with the insertion rod 14. The mounting rod 17 is slidably provided between the fixing block 5 and the connecting sleeve 4. One end of the mounting rod 17 is flush with one end of the connecting sleeve 4, and the other end is fixedly connected to the mounting plate 13. The mounting plate 18 is fixedly provided on the mounting rod 17. The mounting spring 19 is provided between the mounting plate 18 and the connecting sleeve 4. The mounting spring 19 is in a stretched state.

[0030] In this embodiment, the connecting sleeve 4 is inserted into the connecting groove 9, so that the cover plate 3 is aligned and connected with the housing 2. The mounting rod 17 is pressed, and the mounting rod 17 drives the mounting plate 18 to stretch the mounting spring 19. At the same time, the mounting rod 17 drives the mounting plate 13 and the insertion rod 14 to move to one side. The insertion rod 14 leaves the insertion hole 16, so that the fixing rod 8 extends into the fixing hole 10 of the connecting groove 9 under the elastic force of the fixing spring 7, thereby connecting and fixing the connecting sleeve 4 and the connecting groove 9, and connecting the cover plate 3 and the housing 2. The mounting rod 17 is released, and the mounting rod 17 and the mounting plate 13 are reset under the elastic force of the mounting spring 19. The mounting plate 13 still abuts against the fixing block 5, and one end of the mounting rod 17 is still flush with the connecting sleeve 4, thereby making the end face of the cover plate 3 flush. The operation is reversed. First, the mounting rod 17 is squeezed, and then the fixing rod 8 is squeezed through the fixing hole 10 to fix the position of the fixing rod 8, which facilitates the disassembly of the cover plate 3 for maintenance.

[0031] Please see Figures 4-5 As one embodiment of the detection device: the detection device includes a movable sleeve 20, a movable groove 21 on the movable sleeve 20, a movable block 22 inside the movable groove 21, a connecting rod 23 on the movable block 22, a ball bearing 24 at the bottom of the connecting rod 23, the ball bearing 24 abutting against the sliding groove 12, a movable ring 25 on the movable sleeve 20, a movable disk 26 fixedly on one side of the movable sleeve 20, a pressing plate 27 circumferentially fixed on the inner wall of the movable ring 25, the pressing plate 27 corresponding to the position of the movable groove 21, a positioning rod 28 threadedly connected to the housing 2, and a positioning hole 29 on the movable disk 26 that cooperates with the positioning rod 28.

[0032] More specifically, when detecting the position of the drive shaft 11, the positioning rod 28 is threaded onto the housing 2. Then, through the cooperation of the positioning rod 28 and the positioning hole 29, the movable disk 26 is installed onto the positioning rod 28, and the movable sleeve 20 is fitted onto the drive shaft 11. The ball bearings 24 on the connecting rod 23 abut against the slide groove 12. The movable disk 26 drives the movable sleeve 20 to move. The movable sleeve 20 drives the movable block 22, the connecting rod 23 and the ball bearings 24 to move on the slide groove 12 through the movable groove 21. When the drive shaft 11 is installed at an angle, the angle of the drive shaft 11 will squeeze the ball bearings 24, the connecting rod 23 and the movable block 22 to the side. The movable block 22 squeezes the extrusion plate 27, increasing the friction between the movable block 22 and the extrusion plate 27, which makes it difficult for the movable sleeve 20 and the movable disk 26 to move. This allows the drive shaft 11 to be detected as qualified. The method of detecting the installation accuracy of the drive shaft 11 is simple and convenient.

[0033] In summary, during the use or operation of the overall equipment: Insert the connecting sleeve 4 into the connecting groove 9 to align the cover plate 3 with the housing 2. Press the mounting rod 17; the mounting rod 17 drives the mounting plate 18 to stretch the mounting spring 19. Simultaneously, the mounting rod 17 moves the mounting plate 13 and the insertion rod 14 to one side, causing the insertion rod 14 to leave the insertion hole 16. This allows the fixing rod 8 to extend into the fixing hole 10 of the connecting groove 9 under the elastic force of the fixing spring 7, thus connecting and fixing the connecting sleeve 4 with the connecting groove 9, and connecting the cover plate 3 with the housing 2. Release the mounting rod 17; the mounting rod 17 and the mounting plate 13 will reset under the elastic force of the mounting spring 19. The mounting plate 13 remains against the fixing block 5, and one end of the mounting rod 17 remains flush with the connecting sleeve 4, thus making the end face of the cover plate 3 flush. Reverse the operation: first press the mounting rod 17, then press the fixing rod 8 through the fixing hole 10 to fix the position of the fixing rod 8, facilitating the removal of the cover plate 3 for maintenance.

[0034] When checking the position of the drive shaft 11, the positioning rod 28 is threaded onto the housing 2. Then, through the cooperation of the positioning rod 28 and the positioning hole 29, the movable disk 26 is installed onto the positioning rod 28, and the movable sleeve 20 is fitted onto the drive shaft 11. The ball 24 on the connecting rod 23 abuts against the slide groove 12. The movable disk 26 drives the movable sleeve 20 to move. The movable sleeve 20 drives the movable block 22, the connecting rod 23 and the ball 24 to move on the slide groove 12 through the movable groove 21. When the drive shaft 11 is installed at an angle, the angle of the drive shaft 11 will squeeze the ball 24, the connecting rod 23 and the movable block 22. The movable block 22 squeezes the extrusion plate 27, increasing the friction between the movable block 22 and the extrusion plate 27, which makes it difficult for the movable sleeve 20 and the movable disk 26 to move. This allows the drive shaft 11 to be checked for qualification. The method of checking the installation accuracy of the drive shaft 11 is simple and convenient.

[0035] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0036] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An electric drive gearbox assembly structure for an electric vehicle, comprising a gearbox body (1), characterized in that: The gearbox body (1) includes a housing (2), and the housing (2) has cover plates (3) on its upper and lower sides. The cover plates (3) have connecting sleeves (4), and the connecting sleeves (4) have fixed blocks (5) inside. The fixed blocks (5) have fixed grooves (6) inside. The fixed grooves (6) have fixed springs (7) inside. One end of the fixed springs (7) has a fixed rod (8). The housing (2) has a connecting groove (9) that cooperates with the connecting sleeves (4), and the connecting grooves (9) have fixed holes (10) that cooperate with the fixed rods (8). The housing (2) has a drive shaft (11), and the drive shaft (11) has a sliding groove (12). The housing (2) has a detection device.

2. The electric drive gearbox assembly structure for an electric vehicle according to claim 1, characterized in that: The fixing block (5) has a mounting plate (13) on one side, an insertion rod (14) on the mounting plate (13), a fixing plate (15) on the fixing rod (8), and an insertion hole (16) on the fixing plate (15) that cooperates with the insertion rod (14).

3. The electric drive gearbox assembly structure for an electric vehicle according to claim 2, characterized in that: An installation rod (17) is slidably provided between the fixing block (5) and the connecting sleeve (4). One end of the installation rod (17) is flush with one end of the connecting sleeve (4), and the other end is fixedly connected to the mounting plate (13).

4. The electric drive gearbox assembly structure for an electric vehicle according to claim 3, characterized in that: An installation plate (18) is fixedly provided on the installation rod (17), and an installation spring (19) is provided between the installation plate (18) and the connecting sleeve (4). The installation spring (19) is in a stretched state.

5. The electric drive gearbox assembly structure for an electric vehicle according to claim 1, characterized in that: The detection device includes a movable sleeve (20), a movable groove (21) on the movable sleeve (20), a movable block (22) inside the movable groove (21), a connecting rod (23) on the movable block (22), a ball bearing (24) at the bottom of the connecting rod (23), the ball bearing (24) abutting against the sliding groove (12), and a movable ring (25) on the movable sleeve (20).

6. The electric drive gearbox assembly structure for an electric vehicle according to claim 5, characterized in that: A movable disk (26) is fixedly provided on one side of the movable sleeve (20).

7. The electric drive gearbox assembly structure for an electric vehicle according to claim 6, characterized in that: The inner wall of the movable ring (25) is circumferentially fixed with an extrusion plate (27), and the extrusion plate (27) corresponds to the position of the movable groove (21).

8. The electric drive gearbox assembly structure for an electric vehicle according to claim 7, characterized in that: The housing (2) is threaded with a positioning rod (28), and the movable disk (26) is provided with a positioning hole (29) that cooperates with the positioning rod (28).

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