Agricultural Machinery Rear Steering Axle Welding Fixture

Technical Field

The utility model belongs to the technical field of agricultural machinery equipment, and more particularly relates to a welding fixture for an agricultural machinery rear steering axle.

Background Technology

The steering rear axle of agricultural machinery is directly related to the driving stability and safety of the harvester. Accessories and components need to be mounted on the agricultural machinery steering rear axle and connected with the vehicle frame to support the weight of the vehicle and transmit the acting force of the wheels to the frame.

Therefore, during the welding process of the agricultural machinery rear steering axle, reinforcing grooves, swing rods, oil cylinder seats, steering kingpin seats, steering limit blocks, and the like need to be assembled on the steering axle beam. In particular, the positioning and assembly of the steering kingpin seats are difficult because, in order to improve steering performance, the swing rod is eccentrically arranged, resulting in the steering kingpin seats on both sides not being symmetrically arranged with the swing rod as the axis center, thereby increasing positioning difficulty. Moreover, the steering kingpin seats have a certain inclination angle, which further increases the positioning difficulty.

In addition, with the continuous development of agriculture, OEM manufacturers have developed increasingly diversified harvester designs to meet the requirements of different regional markets. As a result, the designs of agricultural machinery steering rear axles are also diversified. Existing welding fixtures for agricultural machinery rear steering axles can only correspond to one specific product type, which wastes time and increases production costs.

Utility Model Content

In order to solve the above problems and overcome the deficiencies of the prior art, the utility model provides a welding fixture for an agricultural machinery rear steering axle.

The first technical problem solved is that the swing rod is eccentrically arranged, causing the steering kingpin seats on both sides not to be symmetrically arranged with the swing rod as the axis center, thereby increasing positioning difficulty, especially because the steering kingpin seats have a certain inclination angle.

The second technical problem solved is that existing welding fixtures for agricultural machinery rear steering axles can only correspond to one type of workpiece, which wastes time and increases production costs.

The specific technical solution adopted by the utility model is as follows:

The agricultural machinery rear steering axle welding fixture includes a welding fixture base plate. A swing rod positioning column is arranged on one side of the upper end surface of the welding fixture base plate perpendicular to the central axis in the depth direction. An arc groove matched with the swing rod of the workpiece is formed on the upper end surface of the swing rod positioning column.

Steering kingpin seat positioning assemblies capable of reciprocating along the depth direction of the welding fixture base plate are respectively arranged on both sides of the swing rod positioning column.

Each steering kingpin seat positioning assembly includes a sliding base plate capable of reciprocating along the depth direction of the welding fixture base plate. A steering kingpin positioning column arranged at a preset angle is provided on the upper end surface of the sliding base plate.

An oil cylinder seat positioning shaft sleeve is further arranged between the steering kingpin positioning column away from the swing rod positioning column and the swing rod positioning column. The oil cylinder seat positioning shaft sleeve is inserted and matched with the workpiece oil cylinder seat through a positioning shaft. The oil cylinder seat positioning shaft sleeve is arranged on the upper end surface of the sliding base plate corresponding to the steering kingpin positioning column away from the swing rod positioning column.

The sliding base plate reciprocates along the depth direction of the welding fixture base plate through a power mechanism.

Further, the power mechanism includes a turntable rotatably connected with the welding fixture base plate. A rotating shaft is arranged at the eccentric position of the turntable. The rotating shaft is connected with a connecting rod through rotational connection, and the other end of the connecting rod is rotationally connected with the sliding base plate. Both sides of the sliding base plate are slidably connected with the welding fixture base plate through guide rails.

Further, the turntable is fixedly connected with a handle for driving the turntable to rotate.

Further, guide rods are vertically arranged on the bottom end surface of the sliding base plate, guide grooves are formed on the upper end surface of the welding fixture base plate, and the guide rods are slidably matched with the guide grooves.

Further, the steering kingpin positioning column is inserted and matched with the steering kingpin seat of the workpiece.

Further, one side of the steering kingpin positioning column is further provided with a limit block fixing plate positioned through a pin shaft, and the limit block fixing plate is fixed with the steering limit block of the workpiece through a pin shaft.

Beneficial Effects

One advantage of the utility model is that it provides a welding fixture capable of adjusting the position of the steering kingpin positioning column along the depth direction of the welding fixture base plate, thereby adapting to different agricultural machinery steering rear axle designs.

Another advantage of the utility model is that the independently adjustable sliding base plate is provided with a steering kingpin positioning column arranged at a preset angle. The inclined steering kingpin positioning column can be adjusted along with the sliding base plate, facilitating the positioning of inclined steering kingpin seats and solving the problem caused by the eccentric arrangement of the swing rod, which makes the steering kingpin seats on both sides asymmetrical and difficult to position.

Another advantage of the utility model is that the upper end surface of the welding fixture base plate is provided with guide grooves, and the guide rods are slidably matched with the guide grooves, thereby increasing the stability and accuracy of adjusting the position of the steering kingpin positioning column along the depth direction of the welding fixture base plate and improving docking and welding precision.

Description of Drawings

Figure 1: Structural schematic diagram of the utility model;

Figure 2: Bottom structural schematic diagram of the utility model;

Figure 3: Structural schematic diagram of the utility model in operation.

Reference numerals in the drawings:

Guide groove

Guide rod

Steering kingpin positioning column

Limit block fixing plate

Sliding base plate

Arc groove

Swing rod positioning column

Oil cylinder seat positioning shaft sleeve

Connecting rod

Turntable

Handle

Guide rail

Welding fixture base plate

Specific Embodiment

In the description of the utility model, terms such as “center”, “upper”, “lower”, “left”, “right”, “rear”, “lower left”, “upper right”, and “outer” are based on the orientations shown in the drawings and are only used for convenience of description and simplification. They do not indicate or imply that the referenced device or component must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be interpreted as limiting the protection scope of the utility model. In addition, terms such as “first”, “second”, and “third” are used only for descriptive purposes and should not be interpreted as indicating or implying relative importance.

The specific embodiment of the utility model is as follows:

The agricultural machinery rear steering axle welding fixture includes a welding fixture base plate 13. A swing rod positioning column 7 is arranged on one side of the upper end surface of the welding fixture base plate 13 perpendicular to the central axis in the depth direction. An arc groove 6 matched with the swing rod is formed on the upper end surface of the swing rod positioning column 7.

Steering kingpin seat positioning assemblies capable of reciprocating along the depth direction of the welding fixture base plate 13 are respectively arranged on both sides of the swing rod positioning column 7.

Each steering kingpin seat positioning assembly includes a sliding base plate 5 capable of reciprocating along the depth direction of the welding fixture base plate 13. A steering kingpin positioning column 3 arranged at a preset angle is provided on the upper end surface of the sliding base plate 5.

An oil cylinder seat positioning shaft sleeve 8 is further arranged between the steering kingpin positioning column 3 away from the swing rod positioning column 7 and the swing rod positioning column 7. The oil cylinder seat positioning shaft sleeve 8 is inserted and matched with the oil cylinder seat of the workpiece through a positioning shaft. The oil cylinder seat positioning shaft sleeve 8 is arranged on the upper end surface of the sliding base plate 5 corresponding to the steering kingpin positioning column 3 away from the swing rod positioning column 7.

The sliding base plate 5 reciprocates along the depth direction of the welding fixture base plate 13 through a power mechanism.

Further, the power mechanism includes a turntable 10 rotatably connected with the welding fixture base plate 13. A rotating shaft is arranged at the eccentric position of the turntable 10. The rotating shaft is connected with a connecting rod 9 through rotational connection, and the other end of the connecting rod 9 is rotationally connected with the sliding base plate 5. Both sides of the sliding base plate 5 are slidably connected with the welding fixture base plate 13 through guide rails 12.

Further, the turntable 10 is fixedly connected with a handle 11 for driving the turntable 10 to rotate.

Further, guide rods 2 are vertically arranged on the bottom end surface of the sliding base plate 5. Guide grooves 1 are formed on the upper end surface of the welding fixture base plate 13, and the guide rods 2 are slidably matched with the guide grooves 1.

Further, the steering kingpin positioning column 3 is inserted and matched with the steering kingpin seat of the workpiece.

Further, one side of the steering kingpin positioning column 3 is further provided with a limit block fixing plate 4 positioned through a pin shaft, and the limit block fixing plate 4 is fixed with the steering limit block of the workpiece through a pin shaft.

It should be noted that the utility model relates to a welding fixture for an agricultural machinery rear steering axle. During operation:

The welding fixture is mainly used for positioning prefabricated parts together with the oil cylinder seat, steering kingpin seat, and swing rod for the next welding process. The swing rod, steering axle beam body, and reinforcing groove are prefabricated parts welded in advance.

First, the prefabricated parts of the agricultural machinery rear steering axle are placed on the welding fixture, and the swing rod of the prefabricated part is placed into the arc groove 6 on the upper end surface of the swing rod positioning column 7.

According to the actual size of the workpiece, the handle 11 drives the turntable 10 to rotate. Since a rotating shaft is arranged at the eccentric position of the turntable 10, and the rotating shaft is connected with the connecting rod 9 through rotational connection, while the other end of the connecting rod 9 is rotationally connected with the sliding base plate 5, and both sides of the sliding base plate 5 are slidably connected with the welding fixture base plate 13 through guide rails 12:

As the turntable 10 rotates forward or backward, the position of the steering kingpin positioning column 3 along the depth direction of the welding fixture base plate 13 can be adjusted, thereby adapting to different agricultural machinery steering rear axle designs. Therefore, the utility model solves the problem that one welding fixture can only be used for one type of workpiece.

The independently adjustable sliding base plate 5 is provided with a steering kingpin positioning column 3 arranged at a preset angle. The inclined steering kingpin positioning column 3 can be adjusted along with the sliding base plate 5, facilitating the positioning of inclined steering kingpin seats and solving the problem caused by the eccentric arrangement of the swing rod.

The oil cylinder seat positioning shaft sleeve 8 is inserted and matched with the oil cylinder seat of the workpiece through a positioning shaft for positioning the oil cylinder seat and the prefabricated part. The limit block fixing plate 4 is fixed with the steering limit block of the workpiece through a pin shaft for positioning the steering limit block and the prefabricated part.

The upper end surface of the welding fixture base plate 13 is provided with guide grooves 1, and the guide rods 2 are slidably matched with the guide grooves 1, thereby increasing the stability and accuracy of adjusting the steering kingpin positioning column 3 along the depth direction of the welding fixture base plate 13 and improving docking and welding precision.

The above description illustrates the basic principles, main features, and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The embodiments and descriptions only illustrate the principles of the utility model. Various modifications and improvements may be made without departing from the spirit and scope of the utility model, and such modifications and improvements shall fall within the protection scope of the utility model. The protection scope of the utility model is defined by the appended claims and their equivalents.