Auxiliary turnover equipment for excavator chassis assembly

Abstract

The utility model relates to the technical field of excavator chassis assembly, and discloses an excavator chassis assembly auxiliary turnover device which comprises a portal frame, a first electric push rod is fixedly connected to the outer wall of the top of the portal frame, and an output shaft of the first electric push rod penetrates through the inner wall of the top of the portal frame to be fixedly connected with a U-shaped frame. Rotating shafts are rotationally connected to the bottom ends of the inner walls of the two sides of the U-shaped frame through bearings correspondingly, a frame is fixedly connected between the two rotating shafts, a driving assembly enabling the frame to rotate is arranged between one rotating shaft and the U-shaped frame, and second electric push rods are fixedly connected to the outer walls of the two sides of the frame correspondingly. According to the utility model, the U-shaped plate is arranged, so that the combined action of clamping the two sides of the excavator chassis is realized, the three-dimensional constraint on the chassis is formed, the slippage risk caused by center-of-gravity shift in the overturning process is reduced, and the excavator chassis turnover device is particularly suitable for an asymmetric chassis structure or an irregular center-of-gravity chassis structure.

Description

Technical Field

[0001] This utility model relates to the field of excavator chassis assembly technology, and more specifically to an auxiliary tilting device for excavator chassis assembly. Background Technology

[0002] The excavator chassis is a crucial component of the entire machine, typically consisting of tracks, track rollers, drive wheels, and idler wheels. During assembly, the chassis undergoes numerous processes, including component positioning, bolt tightening, welding, and quality inspection. Due to its complex structure and significant weight, the chassis requires frequent adjustments to its orientation during assembly to facilitate operation at different angles.

[0003] A search revealed Chinese patent CN218490778U, which discloses a tilting device for excavator chassis assembly. This device connects a rotating disk and a limiting disk together using an adjusting connecting device, and then drives a motor to rotate the rotating shaft, thereby rotating the chassis. The structure is simple and does not require hoisting. However, when clamping the excavator chassis, the device uses two clamping plates to hold it. Due to the large weight of the excavator chassis, it is prone to slippage during the tilting process, which may cause it to fall off, posing a certain safety hazard. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an auxiliary tilting device for excavator chassis assembly to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: an auxiliary tilting device for excavator chassis assembly, including a gantry frame. An electric push rod is fixedly connected to the top outer wall of the gantry frame. The output shaft of the electric push rod passes through the top inner wall of the gantry frame and is fixedly connected to a U-shaped frame. The bottom ends of the inner walls on both sides of the U-shaped frame are rotatably connected to a rotating shaft via bearings. A frame is fixedly connected between the two rotating shafts. A drive assembly for rotating the frame is provided between one of the rotating shafts and the U-shaped frame. An electric push rod is fixedly connected to the outer walls on both sides of the frame. The output ends of the two electric push rods are respectively fixedly connected to clamps through the inner walls on both sides of the frame. Two symmetrical U-shaped plates are fixedly connected to the opposite sides of the two clamps.

[0006] As a further embodiment of this utility model, the drive assembly includes an external gear ring fixedly connected to the outer wall of the rotating shaft, a drive motor fixedly connected to one side of the U-shaped frame, and a gear that cooperates with the external gear ring fixedly connected to the output shaft of the drive motor through the inner wall of one side of the U-shaped frame.

[0007] As a further embodiment of this utility model, stepped clamping blocks are fixedly connected to the top inner wall and the top inner wall of the U-shaped plate. Protective pads are adhered to multiple stepped surfaces of the stepped clamping blocks, and multiple anti-slip grooves are formed on the multiple protective pads.

[0008] As a further embodiment of this utility model, connecting plates are fixedly connected to the outer walls of the upper and lower sides of the two U-shaped plates in the same group, and multiple reinforcing rods are fixedly connected between the two connecting plates.

[0009] As a further embodiment of this utility model, a guide rod is fixedly connected to the top outer wall of the U-shaped frame. The top ends of the two guide rods pass through the top outer wall of the gantry frame and are slidably connected thereto. Two symmetrical sliding rods are fixedly connected to one side of the clamping plate. One end of each sliding rod passes through one side outer wall of the frame and is slidably connected thereto.

[0010] As a further embodiment of this invention, a limit block is fixedly connected to one end of both the slide rod and the guide rod.

[0011] As a further embodiment of this utility model, a workbench for placing the excavator chassis is provided below the gantry frame.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model uses a U-shaped plate to clamp the two sides of the excavator chassis, forming a three-dimensional constraint on the chassis and reducing the risk of slippage caused by the shift of the center of gravity during the overturning process. It is especially suitable for chassis structures with asymmetry or irregular center of gravity.

[0014] 2. This utility model uses stepped clamping blocks provided inside the U-shaped plate to cover various excavator chassis to meet their assembly requirements. It is compatible with excavator chassis structures of different thicknesses or cross-sectional heights, and can complete the clamping without changing the clamps.

[0015] 3. This utility model, through its specially designed drive components, solves the problems of low efficiency, high risk, and safety hazards associated with manual flipping by leveraging the core advantages of automation, high precision, and strong safety. It is particularly suitable for high-strength and high-precision assembly scenarios of medium and large excavator chassis. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front three-dimensional structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the rear three-dimensional structure of this utility model.

[0018] Figure 3 This is an enlarged structural schematic diagram of the driving component of this utility model.

[0019] Figure 4 This is an enlarged schematic diagram of the clamping plate structure of this utility model.

[0020] The attached diagram is labeled as follows: 1. Gantry frame; 2. Electric push rod one; 3. U-shaped frame; 4. Rotating shaft; 5. Frame; 6. Electric push rod two; 7. Clamping plate; 8. Guide rod; 9. Slide rod; 10. Drive assembly; 11. Drive motor; 12. Gear; 13. External gear ring; 14. U-shaped plate; 15. Stepped clamping block; 16. Protective pad; 17. Anti-slip groove; 18. Connecting plate; 19. Reinforcing rod. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Reference Figures 1-4This utility model provides an auxiliary tilting device for excavator chassis assembly, including a gantry frame 1. An electric push rod 2 is bolted to the top outer wall of the gantry frame 1. The output shaft of the electric push rod 2 passes through the top inner wall of the gantry frame 1 and is bolted to a U-shaped frame 3. A rotating shaft 4 is rotatably connected to the bottom of the inner walls of both sides of the U-shaped frame 3 via bearings. A frame 5 is bolted between the two rotating shafts 4. A drive assembly 10 for rotating the frame 5 is provided between one of the rotating shafts 4 and the U-shaped frame 3. Both outer walls of the frame 5 are bolted to the U-shaped frame 3 via bearings. Two electric push rods 6 are bolted to the frame 5. The output ends of the two electric push rods 6 pass through the inner walls of both sides of the frame 5 and are bolted to clamping plates 7. Two symmetrical U-shaped plates 14 are bolted to the opposite sides of the clamping plates 7. When the excavator chassis needs to be tilted, the electric push rod 2 is first activated to extend, thereby moving the U-shaped frame 3 downwards. During the downward movement of the U-shaped frame 3, the middle frame 5 moves downwards synchronously, and the clamping plates 7 on it move downwards along with the frame 5, while the U-shaped plates 14 move downwards synchronously. The U-shaped plate 14 is lowered until it is at the same horizontal level as the excavator chassis. The combined effect of the U-shaped plate 14 clamping the excavator chassis on both sides creates a three-dimensional constraint, reducing the risk of slippage due to center of gravity shift during tilting. This is particularly suitable for chassis structures with asymmetry or irregular centers of gravity. Stepped clamping blocks 15 are bolted to the top inner wall and the top inner wall of the U-shaped plate 14. These stepped clamping blocks 15 inside the U-shaped plate 14 can cover various excavator chassis to meet their assembly requirements and adapt to excavator chassis of different thicknesses or cross-sectional heights. The disc structure allows for clamping without changing the clamps. Protective pads 16 are adhered to multiple stepped surfaces of the stepped clamping block 15, and multiple anti-slip grooves 17 are provided on the multiple protective pads 16. A workbench for placing the excavator chassis is provided below the gantry frame 1. After the U-shaped plate 14 is moved to the designated position, two electric push rods 6 are activated simultaneously to extend and drive the two clamping plates 7 to move closer together. When the two clamping plates 7 move closer together, they drive the U-shaped plate 14 on it to move, thereby clamping the two sides of the excavator chassis through the stepped clamping block 15 inside.

[0023] In this invention, the drive assembly 10 includes an external gear ring 13 bolted to the outer circumference of the rotating shaft 4. A drive motor 11 is bolted to one side of the U-shaped frame 3. The output shaft of the drive motor 11 passes through the inner wall of one side of the U-shaped frame 3 and is bolted to a gear 12 that meshes with the external gear ring 13. After the clamping operation of the excavator chassis is completed, the electric push rod 2 is activated to retract. During its retraction, the excavator chassis moves upward. When it reaches the top, the drive motor 11 is activated to drive the gear 12 to rotate. When the gear 12 rotates, it drives the external gear ring 13 that meshes with it to rotate. During its rotation, the gear 12 drives the external gear ring 13 to rotate. The rotating shaft 4 connected to it rotates synchronously, thereby causing the frame 5 to rotate. As the frame 5 rotates, it drives the excavator chassis clamped inside to rotate. After rotating 180 degrees, the excavator chassis can be flipped. After the flip is completed, the electric push rod 2 is activated to extend and drive the excavator chassis to move downward until it is placed back on the worktable. Then the clamping and fixing can be released. Through the provided drive component 10, the core advantages of automation, high precision and strong safety are achieved, which solves the problems of low efficiency, high risk and safety hazards of manual flipping. It is especially suitable for high-strength and high-precision assembly scenarios of medium and large excavator chassis.

[0024] In this utility model, the upper and lower outer walls of the two U-shaped plates 14 in the same group are fixedly connected with connecting plates 18 by bolts, and multiple reinforcing rods 19 are fixedly connected between the two connecting plates 18 by bolts.

[0025] In this utility model, guide rods 8 are fixedly connected to the top outer wall of the U-shaped frame 3 by bolts. The top ends of the two guide rods 8 pass through the top outer wall of the gantry frame 1 and are slidably connected thereto. Two symmetrical sliding rods 9 are fixedly connected to one side of the clamping plate 7 by bolts. One end of the two sliding rods 9 passes through the outer wall of one side of the frame 5 and is slidably connected thereto. One end of the sliding rods 9 and the guide rods 8 are fixedly connected to a limit block by bolts.

[0026] The use of this utility model involves the following steps:

[0027] S1: When it is necessary to flip the excavator chassis, first start the electric push rod 2 to extend and drive the U-shaped frame 3 to move downward. During the downward movement of the U-shaped frame 3, the middle frame 5 moves downward synchronously. At the same time, the clamping plate 7 on it moves downward with the frame 5 and the U-shaped plate 14 moves downward synchronously. The U-shaped plate 14 moves down to the same horizontal height as the excavator chassis.

[0028] S2: After the U-shaped plate 14 moves to the designated position, the two electric push rods 6 are activated simultaneously to extend and drive the two clamping plates 7 to move closer to each other. When the two clamping plates 7 move closer to each other, the U-shaped plate 14 on it moves and clamps the two sides of the excavator base plate through the stepped clamping blocks 15 inside.

[0029] S3: After the clamping operation of the excavator chassis is completed, the electric push rod 2 is activated to retract. During the retraction process, the excavator chassis will move upward. When it reaches the top, the drive motor 11 is activated to drive the gear 12 to rotate. When the gear 12 rotates, it will drive the external gear ring 13 that meshes with it to rotate. During its rotation, it will drive the shaft 4 connected to it to rotate synchronously, thereby causing the frame 5 to rotate. While the frame 5 is rotating, it will drive the excavator chassis clamped inside to rotate. After it rotates 180 degrees, the overturning operation of the excavator chassis is completed.

[0030] S4: After the flipping is completed, start the electric push rod 2 to extend it and drive the excavator chassis to move downwards until it is placed back on the workbench. Then release the clamps to fix it.

[0031] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0032] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0033] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. An auxiliary tilting device for excavator chassis assembly, comprising a gantry (1), characterized in that: An electric push rod (2) is fixedly connected to the top outer wall of the gantry frame (1). The output shaft of the electric push rod (2) passes through the top inner wall of the gantry frame (1) and is fixedly connected to a U-shaped frame (3). The bottom of the inner walls on both sides of the U-shaped frame (3) is rotatably connected to a rotating shaft (4) via bearings. A frame (5) is fixedly connected between the two rotating shafts (4). A drive assembly (10) for rotating the frame (5) is provided between one of the rotating shafts (4) and the U-shaped frame (3). An electric push rod (6) is fixedly connected to the outer walls on both sides of the frame (5). The output ends of the two electric push rods (6) pass through the inner walls on both sides of the frame (5) and are fixedly connected to clamps (7). Two symmetrical U-shaped plates (14) are fixedly connected to the opposite sides of the two clamps (7).

2. The auxiliary tilting device for excavator chassis assembly according to claim 1, characterized in that: The drive assembly (10) includes an external gear ring (13) fixedly connected to the outer circumference of the rotating shaft (4), a drive motor (11) fixedly connected to one side of the U-shaped frame (3), and a gear (12) that works with the external gear ring (13) is fixedly connected to the output shaft of the drive motor (11) through the inner wall of one side of the U-shaped frame (3).

3. The auxiliary tilting device for excavator chassis assembly according to claim 1, characterized in that: The top inner wall of the U-shaped plate (14) is fixedly connected with stepped clamping blocks (15), and protective pads (16) are glued to multiple stepped surfaces of the stepped clamping blocks (15). Multiple anti-slip grooves (17) are opened on the multiple protective pads (16).

4. The auxiliary tilting device for excavator chassis assembly according to claim 3, characterized in that: The two U-shaped plates (14) in the same group are fixedly connected to the outer walls on the upper and lower sides with connecting plates (18), and multiple reinforcing rods (19) are fixedly connected between the two connecting plates (18).

5. The auxiliary tilting device for excavator chassis assembly according to claim 1, characterized in that: Guide rods (8) are fixedly connected to the top outer wall of the U-shaped frame (3). The top ends of the two guide rods (8) pass through the top outer wall of the gantry frame (1) and are slidably connected thereto. Two symmetrical sliding rods (9) are fixedly connected to one side of the clamping plate (7). One end of the two sliding rods (9) passes through one side outer wall of the frame (5) and is slidably connected thereto.

6. The auxiliary tilting device for excavator chassis assembly according to claim 5, characterized in that: One end of both the slide rod (9) and the guide rod (8) is fixedly connected to a limit block.

7. The auxiliary tilting device for excavator chassis assembly according to claim 5, characterized in that: The gantry (1) is provided with a workbench for placing the excavator chassis below it.

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