An excavator vehicle frame that is easy to assemble

Abstract

The utility model discloses a kind of excavator frame of convenient assembly, including upper frame and lower frame, the upper frame is above lower frame, the bottom center of the upper frame is fixedly installed with connecting base, the top of the lower frame is movably installed with rotary table, connecting base and rotary table are connected by fixed component, the fixed component includes connecting screw rod, locking nut and limit slot, the outer ring of connecting base is equipped with several groups of connecting slot, the connecting slot is evenly distributed in round, the opening of the connecting slot is located at the outer side wall of connecting base, one end of the connecting screw rod is movably hinged in connecting slot, the locking nut is sleeved on connecting screw rod, the limit slot is opened in the outer ring of rotary table. The excavator frame of convenient assembly of the utility model not only solves the problem of low assembly efficiency and poor connection stability in the prior art, but also shortens the production cycle of the excavator and improves the use reliability.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically to an excavator frame that is easy to assemble. Background Technology

[0002] The excavator frame is the core load-bearing component of the excavator, connecting key components such as the traveling mechanism, working device, and cab. Its assembly efficiency and connection stability directly affect the excavator's production cycle and operational reliability. Existing excavator frames have several problems: for example, many modular frames use a fully bolted connection structure, requiring 3-4 people to adjust the frame position to align the bolt holes during assembly. A single assembly can take over 4 hours, and the number of bolts typically exceeds 30 sets, requiring individual loosening for disassembly and maintenance, resulting in low maintenance efficiency. Furthermore, existing modular structures lack effective positioning and guiding designs, making hole misalignment prone to occur during assembly. This leads to additional stress after forced bolt installation, shortening the frame's service life. Summary of the Invention

[0003] The purpose of this invention is to provide an excavator frame that is easy to assemble, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an excavator frame that is easy to assemble, comprising an upper frame and a lower frame, wherein the upper frame is located above the lower frame, a connecting base is fixedly installed at the bottom center of the upper frame, and a turntable is movably installed on the top of the lower frame. The connecting base and the turntable are connected by a fixing component, the fixing component comprising a connecting screw, a locking nut, and a limiting slot. The outer ring of the connecting base has several sets of connecting slots, which are evenly distributed in a circle. The opening of the connecting slot is located on the outer wall of the connecting base. One end of the connecting screw is movably hinged in the connecting slot. The locking nut is sleeved on the connecting screw. The limiting slot is opened on the outer ring of the turntable, and several sets of limiting slots are provided. The opening of the limiting slot is located on the outer wall of the turntable. When the connecting screw rotates downward, it can rotate into the limiting slot. The connecting base and the turntable are locked and fixed by rotating the locking nut. A positioning component is provided between the connecting base and the turntable.

[0005] Preferably, a rotating shaft is installed in the connecting slot, and one end of the connecting screw is provided with a shaft hole that cooperates with the rotating shaft. One end of the connecting screw is sleeved on the rotating shaft through the shaft hole.

[0006] Preferably, the positions of the limiting slot and the connecting slot correspond one-to-one.

[0007] Preferably, the positioning component includes positioning protrusions and positioning grooves. The positioning protrusions are fixedly installed on the bottom of the connecting base, and there are several groups of positioning protrusions distributed in a circle. The positioning grooves are opened on the upper surface of the turntable, and the positions of the positioning protrusions and the positioning grooves correspond one-to-one.

[0008] Preferably, the end face of the positioning protrusion is a conical surface.

[0009] Preferably, the bottom outer ring of the turntable is provided with a flange.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model significantly improves assembly efficiency and connection stability. By using a combination of connecting screws, locking nuts, and limiting slots in the fixing components, the connection process between the upper and lower frames is made simpler and faster. During assembly, simply rotate the connecting screw into the limiting slot and fix it with the locking nut to complete the initial connection of the frame. No multiple people are needed to adjust the frame position, greatly shortening the assembly time.

[0011] 2. The positioning component of this utility model includes a positioning protrusion and a positioning groove, which provides precise guidance for the connection between the upper frame and the lower frame, effectively avoiding the problem of hole misalignment and ensuring the accuracy and stability of the connection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the connection between the connecting base and the turntable of this utility model; Figure 3 This is a top view of the connecting base of this utility model; Figure 4 This is a top view of the turntable structure of this utility model.

[0013] In the diagram: 1. Upper frame; 2. Lower frame; 3. Connecting base; 4. Turntable; 5. Connecting screw; 6. Locking nut; 7. Limiting slot; 8. Connecting slot; 9. Rotating shaft; 10. Positioning protrusion; 11. Positioning groove; 12. Flange. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution for an excavator frame that is easy to assemble: it includes an upper frame 1 and a lower frame 2, the upper frame 1 being located above the lower frame 2. A connecting base 3 is fixedly installed at the bottom center of the upper frame 1, and a turntable 4 is movably installed on the top of the lower frame 2. The connecting base 3 and the turntable 4 are connected by a fixing component, which includes a connecting screw 5, a locking nut 6, and a limiting groove 7. The outer ring of the connecting base 3 has several sets of connecting grooves 8, which are evenly distributed in a circular pattern. The opening of the connecting slot 8 is located on the outer side wall of the connecting base 3. One end of the connecting screw 5 is movably hinged in the connecting slot 8. The locking nut 6 is sleeved on the connecting screw 5. The limiting slot 7 is opened on the outer ring of the turntable 4, and several sets of the limiting slot 7 are provided. The opening of the limiting slot 7 is located on the outer side wall of the turntable 4. When the connecting screw 5 rotates downward, it can rotate into the limiting slot 7. The connecting base 3 and the turntable 4 are locked and fixed by rotating the locking nut 6. A positioning component is provided between the connecting base 3 and the turntable 4.

[0016] Furthermore, a rotating shaft 9 is installed in the connecting slot 8, and one end of the connecting screw 5 is provided with a shaft hole that cooperates with the rotating shaft 9. One end of the connecting screw 5 is sleeved on the rotating shaft 9 through the shaft hole.

[0017] In this embodiment, the connecting screw 5 can rotate flexibly around the pivot 9. This allows for smoother and more precise rotation of the connecting screw 5 into the limiting slot 7, reducing jamming and mismatch during assembly and improving assembly efficiency and accuracy. After the connecting screw 5 has rotated to the appropriate position within the limiting slot 7, the locking nut 6 is then fitted onto the connecting screw 5 and tightened, thereby achieving a stable connection between the upper frame 1 and the lower frame 2.

[0018] Furthermore, the positions of the limiting slot 7 and the connecting slot 8 correspond one-to-one.

[0019] In this embodiment, the one-to-one correspondence between the limiting slot 7 and the connecting slot 8 ensures a more precise and direct path for the connecting screw 5 as it rotates from the connecting slot 8 to the limiting slot 7. Operators do not need to perform complex adjustments and calibrations; they only need to rotate the connecting screw 5 around the pivot 9, allowing it to naturally fall into the corresponding limiting slot 7, to quickly complete the initial positioning of the frame.

[0020] Furthermore, the positioning component includes positioning protrusions 10 and positioning grooves 11. The positioning protrusions 10 are fixedly installed on the bottom of the connecting base 3, and there are several groups of positioning protrusions 10 distributed in a circle. The positioning grooves 11 are opened on the upper surface of the turntable 4, and the positions of the positioning protrusions 10 and the positioning grooves 11 correspond one-to-one.

[0021] Furthermore, the shapes and sizes of the positioning protrusion 10 and the positioning groove 11 are compatible, allowing the positioning protrusion 10 to accurately embed into the positioning groove 11 during assembly, thus achieving rapid positioning and initial fixation. When the upper frame 1 and the lower frame 2 are connected by the connecting screw 5 and the locking nut 6, the cooperation between the positioning protrusion 10 and the positioning groove 11 ensures that they will not slide relative to each other in the horizontal direction, further improving the stability and accuracy of the assembly.

[0022] Furthermore, the end face of the positioning protrusion 10 is conical, which has significant advantages. During assembly, as the upper frame 1 gradually approaches the lower frame 2, the conical positioning protrusion 10 provides excellent guidance. Even if there is a slight positional deviation between the upper frame 1 and the lower frame 2 during initial docking, the conical surface allows the positioning protrusion 10 to slide smoothly into the positioning groove 11, avoiding assembly difficulties or collision damage caused by positional deviation.

[0023] Furthermore, the bottom outer ring of the turntable 4 is provided with a flange 12. The flange 12 can not only improve the strength of the turntable 4, but also prevent the locking nut 6 from easily moving out of the limiting groove 7.

[0024] Working Principle: When assembling the excavator frame, first place the upper frame 1 in a suitable position above the lower frame 2, so that the connecting base 3 is opposite the turntable 4. Since a rotating shaft 9 is installed in the connecting slot 8, one end of the connecting screw 5 is sleeved on the rotating shaft 9 through the shaft hole, allowing it to rotate flexibly around the rotating shaft 9. The operator rotates the connecting screw 5 around the rotating shaft 9. Because the positions of the limiting slot 7 and the connecting slot 8 correspond one-to-one, the connecting screw 5 can rotate smoothly and accurately into the limiting slot 7. At this time, the conical end of the positioning protrusion 10 plays a guiding role during the approach of the upper and lower frames. Even if there is a slight positional deviation in the initial docking, the positioning protrusion 10 can smoothly slide into the positioning groove 11, achieving rapid positioning and initial fixation, and ensuring that the upper and lower frames do not slide relative to each other in the horizontal direction. Next, the locking nut 6 is placed on the connecting screw 5 rotated into the limiting slot 7 and tightened, locking and fixing the connecting base 3 and the turntable 4. Meanwhile, the flange 12 on the outer ring of the bottom of the turntable 4 can improve the strength of the turntable 4 and prevent the locking nut 6 from easily moving out of the limit slot 7, thus completing the stable assembly of the excavator frame.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An excavator frame that is easy to assemble, comprising an upper frame (1) and a lower frame (2), characterized in that: The upper frame (1) is located above the lower frame (2). A connecting base (3) is fixedly installed at the bottom center of the upper frame (1). A turntable (4) is movably installed on the top of the lower frame (2). The connecting base (3) and the turntable (4) are connected by a fixing component. The fixing component includes a connecting screw (5), a locking nut (6), and a limiting slot (7). Several sets of connecting slots (8) are opened on the outer ring of the connecting base (3). The connecting slots (8) are evenly distributed in a circle. The opening of the connecting slots (8) is located on the outer side of the connecting base (3). On the side wall, one end of the connecting screw (5) is movably hinged in the connecting slot (8), the locking nut (6) is sleeved on the connecting screw (5), the limiting slot (7) is opened on the outer ring of the turntable (4), and the limiting slot (7) is provided in several sets, and the opening of the limiting slot (7) is located on the outer side wall of the turntable (4). When the connecting screw (5) rotates downward, it can rotate into the limiting slot (7). By rotating the locking nut (6), the connecting base (3) and the turntable (4) are locked and fixed. A positioning component is provided between the connecting base (3) and the turntable (4).

2. The excavator frame for easy assembly according to claim 1, characterized in that: A rotating shaft (9) is installed in the connecting slot (8). One end of the connecting screw (5) is provided with a shaft hole that cooperates with the rotating shaft (9). One end of the connecting screw (5) is sleeved on the rotating shaft (9) through the shaft hole.

3. The excavator frame for easy assembly according to claim 2, characterized in that: The positions of the limiting slot (7) and the connecting slot (8) correspond one-to-one.

4. The excavator frame for easy assembly according to claim 3, characterized in that: The positioning component includes a positioning protrusion (10) and a positioning groove (11). The positioning protrusion (10) is fixedly installed on the bottom of the connecting base (3), and the positioning protrusion (10) is distributed in a circular pattern in several groups. The positioning groove (11) is opened on the upper surface of the turntable (4), and the positions of the positioning protrusion (10) and the positioning groove (11) correspond one-to-one.

5. The excavator frame for easy assembly according to claim 4, characterized in that: The end face of the positioning protrusion (10) is a conical surface.

6. The excavator frame for easy assembly according to claim 5, characterized in that: The bottom outer ring of the turntable (4) is provided with a flange (12).

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