Lower frame structure of excavator

Abstract

The utility model discloses a lower frame structure of an excavator, which belongs to the field of excavators and comprises a main frame, two connecting blocks are fixedly connected to the front side of the main frame, a mounting hole is formed in the outer surface of each connecting block, and a bearing seat is fixedly connected to the upper surface of the main frame. And the upper surface of the bearing seat is fixedly connected with a mounting box through bolts. The main frame serves as a core structure, bears other parts and provides overall stability, the limiting sliding rails are matched with the sliding rods and the connecting plates, the position of the base table can be adjusted within a certain range, the strength of the connecting structure of the lower vehicle frame and the upper vehicle frame can be enhanced, connection between the upper vehicle frame and the lower vehicle frame is more stable in the working process of the excavator, and the service life of the excavator is prolonged. Relative shaking and displacement between the upper frame and the lower frame can be effectively reduced regardless of various dynamic impact forces generated during excavation, loading and other construction operations or bumpy road conditions in the driving process, and the stability and reliability of the whole machine are improved.

Description

Technical Field

[0001] The utility model relates to the field of excavators, in particular to an excavator lower frame structure. Background Art

[0002] An excavator is a heavy-duty construction machine, mainly used for digging soil, rocks and other materials, as well as carrying out operations such as material handling, demolition, digging ditches, and laying pipelines. An excavator is usually equipped with a rotatable superstructure (cab and operating device) and a replaceable working device, such as a bucket, a breaker hammer, a hydraulic shear, etc. The excavator underframe is an important mechanical component that connects the upper and lower parts of the excavator and plays a role in supporting and stabilizing the machine. The underframe is the cornerstone of the excavator's walking, working, and transportation operations.

[0003] However, the structural strength of conventional excavator underframes is often unable to meet the requirements of increasingly complex working environments. Under heavy-load operations, rugged terrain, etc., they are prone to deformation or even damage, thereby affecting the normal operation of the excavator, reducing work efficiency, and increasing maintenance costs. At the same time, the stability of the underframe needs to be improved. During operation, it is easy to shake, affecting operational accuracy and safety. Therefore, those skilled in the art provide an excavator underframe structure to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide an excavator lower frame structure to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The cam is fixedly provided with a toothed plate, and the toothed plate is fixedly provided with a toothed plate, and the toothed plate is fixedly provided with a toothed plate.

[0007] As a further solution of the present invention: four connecting seats are fixedly connected to the upper surface of the main frame, and the upper surface of each connecting seat is fixedly connected to a hanging buckle.

[0008] As a further solution of the present invention: a warning sign is provided on the left side of the main frame, and the right side of the warning sign is fixedly connected to the left side of the main frame.

[0009] As a further solution of the present invention: two adapter plates are fixedly connected to the back of the main frame, and the back of each adapter plate is fixedly connected to a mounting frame.

[0010] As a further solution of the present invention: two installation slots are provided inside the main frame, and a reinforcement plate is fixedly connected to the inner wall of each installation slot.

[0011] As a further solution of the present invention: two mounting sleeves are fixedly connected to the upper surface of the main frame, and a fender is fixedly connected to the upper surface of each mounting sleeve.

[0012] As a further solution of the present invention: a parameter plate is fixedly connected to the upper surface of the main frame, and the thickness of the parameter plate is 0.5 cm.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The lower frame structure of the excavator uses the main frame as the core structure when in use, carrying other components and providing overall stability. The limit slide rail is used in conjunction with the sliding rod and the connecting plate to adjust the position of the base within a certain range, which can enhance the strength of the connection structure between the lower frame and the upper frame, making the connection between the upper and lower frames more stable during the operation of the excavator. Whether it is various dynamic impact forces generated during construction operations such as excavation and loading, or bumpy road conditions encountered during driving, the relative shaking and displacement between the upper and lower frames can be effectively reduced, thereby improving the stability and reliability of the entire machine. At the same time, the stable connection structure can reduce friction and wear between the upper and lower frames, thereby extending the service life of the upper and lower frames and connecting components, and reducing maintenance and replacement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the lower frame structure of an excavator;

[0016] Figure 2 A schematic diagram of the three-dimensional structure of an excavator lower frame structure from a rear perspective;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the main frame of the lower frame structure of an excavator from a top view;

[0018] Figure 4 This is a front cross-sectional view of the main frame in the lower frame structure of an excavator.

[0019] In the figure: 1. Main frame; 2. Limiting slide rail; 3. Bearing seat; 4. Mounting box; 5. Positioning hole; 6. Reinforcement plate; 7. Sliding rod; 8. Connecting seat; 9. Hanging buckle; 10. Base; 11. Mounting sleeve; 12. Fender; 13. Connecting block; 14. Mounting hole; 15. Warning sign; 16. Connecting plate; 17. Adapter plate; 18. Mounting frame; 19. Parameter plate; 20. Cylinder sleeve; 21. Clamping shaft; 22. Mounting slot. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0022] See also Figures 1 to 4In the embodiment of the present invention, an excavator lower frame structure includes a main frame 1, the front of the main frame 1 is fixedly connected to two connecting blocks 13, the outer surface of each connecting block 13 is provided with a mounting hole 14, the upper surface of the main frame 1 is fixedly connected to a bearing seat 3, the upper surface of the bearing seat 3 is fixedly connected to a mounting box 4 by bolts, the upper surface of the mounting box 4 is provided with a positioning hole 5, the inner wall of each positioning hole 5 is clamped with a base 10, the upper surface of the base 10 is fixedly connected to a cylinder sleeve 20, the inner wall of the cylinder sleeve 20 is fixedly connected to a card shaft 21, the upper surface of the main frame 1 is provided with a limited slide rail 2, and the inner wall of the limited slide rail 2 is slidably connected with a set of sliding Rod 7, the upper surface of each sliding rod 7 is fixedly connected with a connecting plate 16, and the upper surface of each connecting plate 16 is fixedly connected to the bottom surface of the base 10. The limiting slide rail 2 cooperates with the sliding rod 7 and the connecting plate 16, so that the base 10 can be adjusted in a certain range. The strength of the connection structure between the lower frame and the upper frame can be enhanced, so that the connection between the upper and lower frames is more stable during the operation of the excavator. Whether it is various dynamic impact forces generated during construction operations such as excavation and loading, or bumpy road conditions encountered during driving, the relative shaking and displacement between the upper and lower frames can be effectively reduced, thereby improving the stability and reliability of the entire machine.

[0023] Four connecting seats 8 are fixedly connected to the upper surface of the main frame 1, and a hanging buckle 9 is fixedly connected to the upper surface of each connecting seat 8. The hanging buckle 9 can facilitate the staff to move the device. A warning sign 15 is provided on the left side of the main frame 1. The right side of the warning sign 15 is fixedly connected to the left side of the main frame 1. The warning sign 15 can be used to warn irrelevant personnel to pay attention to safety. Two adapter plates 17 are fixedly connected to the back of the main frame 1. The back of each adapter plate 17 is fixedly connected to a mounting bracket 18. The mounting bracket 18 can facilitate the staff to connect the main frame 1 to external equipment.

[0024] Two mounting grooves 22 are provided inside the main frame 1, and the inner wall of each mounting groove 22 is fixedly connected to a reinforcement plate 6. The setting of the reinforcement plate 6 can improve the structural lightness of the device. Two mounting sleeves 11 are fixedly connected to the upper surface of the main frame 1, and the upper surface of each mounting sleeve 11 is fixedly connected to a mudguard 12. The mudguard 12 can prevent stones, soil and other debris from entering the interior of the main frame 1. A parameter plate 19 is fixedly connected to the upper surface of the main frame 1. The thickness of the parameter plate 19 is 0.5 cm. The setting of the parameter plate 19 can facilitate the staff to understand the basic parameters and usage methods of the device.

[0025] The working principle of the present invention is: when in use, first move the device to the place of use, then place the main frame 1 on the installation position, then fix the installation box 4 on the bearing seat 3 by bolts, and then adjust the position of the base 10 according to actual needs, and finally connect the sleeve 20 and the clamping shaft 21 to the rotating parts that need to be connected. When in use, the main frame 1 serves as the core structure, carrying other components and providing overall stability. The connecting block 13 is used to connect the upper frame. The limiting slide rail 2 is used in conjunction with the sliding rod 7 and the connecting plate 16 to enable the base 10 to adjust its position within a certain range, which can enhance the strength of the connection structure between the lower frame and the upper frame.

[0026] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can make equivalent replacements or changes according to the technical solution and the utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be included in the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An excavator lower frame structure, comprising a main frame (1), characterized in that: The front of the main frame (1) is fixedly connected to two connecting blocks (13), and the outer surface of each connecting block (13) is provided with a mounting hole (14). The upper surface of the main frame (1) is fixedly connected to a bearing seat (3), and the upper surface of the bearing seat (3) is fixedly connected to a mounting box (4) by bolts. The upper surface of the mounting box (4) is provided with a positioning hole (5), and the inner wall of each positioning hole (5) is clamped with a base (10), and the upper surface of the base (10) is fixedly connected to a sleeve (20), and the inner wall of the sleeve (20) is fixedly connected to a clamping shaft (21). The upper surface of the main frame (1) is provided with a limiting slide rail (2), and the inner wall of the limiting slide rail (2) is slidably connected to a group of sliding rods (7), and the upper surface of each sliding rod (7) is fixedly connected to a connecting plate (16), and the upper surface of each connecting plate (16) is fixedly connected to the bottom surface of the base (10).

2. The excavator lower frame structure according to claim 1, characterized in that: Four connecting seats (8) are fixedly connected to the upper surface of the main frame (1), and a hanging buckle (9) is fixedly connected to the upper surface of each connecting seat (8).

3. The excavator lower frame structure according to claim 1, characterized in that: A warning sign (15) is provided on the left side of the main frame (1), and the right side of the warning sign (15) is fixedly connected to the left side of the main frame (1).

4. The excavator lower frame structure according to claim 1, characterized in that: Two adapter plates (17) are fixedly connected to the back of the main frame (1), and a mounting frame (18) is fixedly connected to the back of each adapter plate (17).

5. The excavator lower frame structure according to claim 1, characterized in that: Two installation slots (22) are provided inside the main frame (1), and a reinforcement plate (6) is fixedly connected to the inner wall of each installation slot (22).

6. The excavator lower frame structure according to claim 1, characterized in that: Two mounting sleeves (11) are fixedly connected to the upper surface of the main frame (1), and a fender (12) is fixedly connected to the upper surface of each mounting sleeve (11).

7. The excavator lower frame structure according to claim 1, characterized in that: A parameter plate (19) is fixedly connected to the upper surface of the main frame (1), and the thickness of the parameter plate (19) is 0.5 cm.

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