A connecting device suitable for a lower frame of a excavator

Abstract

This utility model provides a connection device suitable for the underframe of an excavator, belonging to the field of engineering machinery technology. It includes a load-bearing mechanism, a fixing component, and a snap-fit ​​mechanism mounted on the load-bearing mechanism for quick connection and fixed positioning between the underframe and the main body. The load-bearing mechanism includes a fixing component with a base, a fixing block, and a positioning pin. The base connects to the main body of the excavator, the fixing block is mounted on the base, and the positioning pin passes through the fixing block. This utility model achieves quick positioning and stable connection of the underframe through the cooperative structure of the load-bearing mechanism and the snap-fit ​​mechanism. The positioning pin improves assembly alignment, and the limiting component and the hook-fit component form a three-dimensional limiting and locking structure, effectively enhancing connection stability and vibration resistance. The anti-detachment design further ensures connection safety under high-intensity working conditions, thus solving the technical problems of inconvenient assembly and disassembly, inaccurate positioning, and poor structural reliability of traditional connection methods.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery technology, specifically relating to a connecting device suitable for the underframe of an excavator. Background Technology

[0002] A connection device for excavator underframes is primarily used to achieve a stable connection and rapid assembly / disassembly between the excavator underframe and the main body. With the increasing complexity and diversity of modern construction demands, traditional welding or bolted connections are showing their limitations when facing frequent changes, high-precision positioning, and high-intensity operations, such as inconvenient assembly / disassembly, inaccurate positioning, and insufficient connection strength. Especially in applications requiring frequent changes of working devices or multiple working conditions, traditional connection methods are not only time-consuming and labor-intensive but may also affect the overall machine's efficiency and safety.

[0003] In the existing technology, the traditional connection between the excavator underframe and the main body is mostly done by integral welding or bolt flange connection. This has problems such as difficulty in disassembly and assembly, low positioning accuracy, and insufficient connection strength. It is difficult to meet the requirements of modern construction machinery for rapid replacement, high stability and repeated assembly accuracy. Some connection structures are prone to loosening, displacement or even breakage under high-intensity working environment, which affects the overall machine operation safety and service life. Utility Model Content

[0004] The purpose of this utility model is to provide a connection device suitable for the undercarriage of an excavator, aiming to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A connecting device for excavator undercarriage, comprising:

[0007] The load-bearing mechanism includes fasteners;

[0008] The snap-fit ​​mechanism is placed on the bearing mechanism to achieve quick connection and limit fixation between the lower frame and the main body.

[0009] In a preferred embodiment of this utility model, the bearing mechanism includes a fixing member, which has a base, a fixing block and a positioning pin. The base is used to connect with the main body of the excavator, the fixing block is disposed on the base, and the positioning pin passes through the fixing block to position and engage the lower frame connection part.

[0010] As a preferred embodiment of this utility model, the locking mechanism includes a limiting component and a hooking component. The limiting component is used to limit the relative displacement of the lower frame in the connected state, and the hooking component is used to realize the mechanical connection and disassembly operation between the lower frame and the main body.

[0011] As a preferred embodiment of this utility model, the limiting component includes a limiting block and a bolt. The limiting block is adjustablely mounted on the fixing block by the bolt, and is used to limit and lock the connecting end face of the lower frame to prevent loosening or misalignment during operation.

[0012] As a preferred embodiment of this utility model, the mounting assembly includes a fixing plate and a hook. The fixing plate is fixedly connected to the underframe body, and the hook is located at one end of the fixing plate for engaging with the limiting block to achieve quick assembly and disassembly.

[0013] As a preferred embodiment of this utility model, an anti-detachment structure is provided between the hook and the limiting block. After the hook is attached, it is locked with bolts to ensure that the connection device can maintain a stable connection under high-intensity working conditions, thereby improving the safety and reliability of the equipment.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a cooperative structure of bearing mechanism and snap-fit ​​mechanism, the lower frame can be quickly positioned and stably connected. The positioning pin improves the assembly centering. The limiting component and the hook-fit component form a three-dimensional limiting and locking structure, which effectively enhances the connection stability and vibration resistance. The anti-detachment design further ensures the connection safety under high-intensity working conditions, thereby solving the technical problems of inconvenient disassembly and assembly, inaccurate positioning, and poor structural reliability of traditional connection methods. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0018] Figure 3 This is a side view of the present invention;

[0019] Figure 4 This is a top view of the present invention.

[0020] In the diagram: 100, bearing mechanism; 101, fastener; 1011, base; 1012, fixing block; 1013, positioning pin; 200, snap-fit ​​mechanism; 201, limiting component; 2011, limiting block; 2012, bolt; 202, hanging component; 2021, fixing plate; 2022, hook. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0024] Example

[0025] Reference Figures 1-4 This is an embodiment of the present invention, which provides a connecting device suitable for the underframe of an excavator, comprising:

[0026] The load-bearing mechanism 100 includes a fastener 101;

[0027] The snap-fit ​​mechanism 200 is placed on the bearing mechanism 100 to realize quick connection and limit fixation between the lower frame and the main body.

[0028] Specifically, the load-bearing mechanism 100 includes a fixing member 101. The fixing member 101 is provided with a base 1011, a fixing block 1012 and a positioning pin 1013. The base 1011 is used to connect with the main body of the excavator. The fixing block 1012 is provided on the base 1011. The positioning pin 1013 passes through the fixing block 1012 and is used to position and cooperate with the lower frame connection part.

[0029] It should be noted that the fixing component 101 in the bearing mechanism 100 is stably connected to the main body of the excavator through the base 1011. The fixing block 1012 is set on the base 1011 as a limit and installation base. The positioning pin 1013 passes through the fixing block 1012 and plays a guiding and precise positioning role during the assembly of the lower frame, ensuring the centering and stability of the connection structure and improving the overall connection strength and reliability.

[0030] Specifically, the locking mechanism 200 includes a limiting component 201 and a hooking component 202. The limiting component 201 is used to limit the relative displacement of the lower frame in the connected state, and the hooking component 202 is used to realize the mechanical connection and disassembly operation between the lower frame and the main body.

[0031] It should be noted that the snap-fit ​​mechanism 200 achieves rapid assembly and disassembly between the underframe and the main body through the coordinated cooperation of the limiting component 201 and the hook-up component 202; the limiting component 201 provides lateral limiting function, while the hook-up component 202 completes the longitudinal connection. The two work together to form a stable three-dimensional connection structure, which significantly improves the connection safety and operation convenience of the equipment under complex working conditions.

[0032] Specifically, the limiting component 201 includes a limiting block 2011 and a bolt 2012. The limiting block 2011 is adjustablely mounted on the fixing block 1012 by the bolt 2012, and is used to limit and lock the connecting end face of the lower frame to prevent loosening or misalignment during operation.

[0033] It should be noted that the limiting block 2011 in the limiting component 201 is adjustablely mounted on the fixing block 1012 by bolts 2012, and its position can be finely adjusted according to different undercarriage structures to adapt to the installation requirements of various models; after the component is attached, it effectively locks the end face of the undercarriage to prevent loosening or misalignment caused by vibration or external impact, and ensures the connection stability during equipment operation.

[0034] Specifically, the mounting assembly 202 includes a fixing plate 2021 and a hook 2022. The fixing plate 2021 is fixedly connected to the underframe body, and the hook 2022 is located at one end of the fixing plate 2021 and is used to engage with the limiting block 2011 to achieve quick assembly and disassembly.

[0035] It should be noted that the mounting assembly 202 forms a mechanical connection structure with the hook 2022 through the fixing plate 2021. The fixing plate 2021 is firmly welded or screwed to the underframe body, and the hook 2022 is designed as an arc or L-shaped structure, which facilitates quick engagement with the limit block 2011 and axial positioning, making the connection between the underframe and the main body simpler and more efficient, and suitable for frequent disassembly and assembly operations.

[0036] Specifically, an anti-detachment structure is provided between the hook 2022 and the limit block 2011. After the hook is attached, it is locked by bolt 2012 to ensure that the connection device can maintain a stable connection under high-intensity working conditions, thereby improving the safety and reliability of the equipment.

[0037] It should be noted that the hook 2022 and the limit block 2011 are equipped with an anti-detachment structure, such as a slot or elastic locking pin, which is a mechanical anti-detachment design. After the hook is connected, it is further locked by the bolt 2012 to form a double safety guarantee mechanism. This ensures that the connection device can maintain a stable connection under high-intensity working conditions, thereby effectively improving the safety and reliability of the whole machine and meeting the requirements of construction machinery for high load and complex environment.

[0038] In use, the bearing mechanism 100 is first installed on the excavator body via the base 1011. The fixing block 1012 is placed on the base 1011, and the positioning pin 1013 is used to accurately position and guide the connection part of the underframe. The positioning pin 1013 passes through the fixing block 1012 to ensure that the underframe can be accurately aligned during assembly, avoiding unstable connection or uneven force due to misalignment. The locking mechanism 200 is set on the bearing mechanism 100 and mainly includes the limiting component 201 and the hooking component 202. In actual operation, the user welds or screws the fixing plate 2021 in the hooking component 202 to the underframe body, and the hook 2022 is set on the fixing plate 202. One end of hook 2021 has an L-shaped or arc-shaped structure, which facilitates quick engagement with the limit block 2011. After engagement, the limit block 2011 in the limit assembly 201 provides lateral limitation to the end face of the lower frame, and bolts 2012 are used for locking and fixing to prevent loosening or misalignment during equipment operation. The hook 2022 and the limit block 2011 are provided with an anti-detachment structure, such as a slot, elastic locking pin or other mechanical locking method. After the initial engagement is completed, the first anti-detachment protection is formed, and the second locking structure is formed by locking with bolts 2012, thus forming a double safety protection mechanism to ensure that the entire connection device can maintain a stable and reliable connection state under high-intensity operating conditions.

[0039] In summary, by setting up a cooperative structure between the load-bearing mechanism 100 and the snap-fit ​​mechanism 200, the lower frame can be quickly positioned and securely connected. The positioning pin 1013 improves the alignment of the assembly. The limiting component 201 and the hook-fit component 202 form a three-dimensional limiting and locking structure, which effectively enhances the connection stability and vibration resistance. The anti-detachment design further ensures the connection safety under high-intensity working conditions, thereby solving the technical problems of inconvenient disassembly and assembly, inaccurate positioning, and poor structural reliability of traditional connection methods.

[0040] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0041] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0042] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A connecting device suitable for the undercarriage of an excavator, characterized in that: include, The load-bearing mechanism (100) includes a fastener (101); The snap-fit ​​mechanism (200) is placed on the bearing mechanism (100) to realize the quick connection and limit fixation between the lower frame and the main body.

2. A connecting device suitable for the undercarriage of an excavator according to claim 1, characterized in that: The bearing mechanism (100) includes a fixing member (101), which is provided with a base (1011), a fixing block (1012) and a positioning pin (1013). The base (1011) is used to connect with the main body of the excavator. The fixing block (1012) is provided on the base (1011). The positioning pin (1013) passes through the fixing block (1012) and is used to position and cooperate with the lower frame connection part.

3. A connecting device suitable for the undercarriage of an excavator according to claim 2, characterized in that: The locking mechanism (200) includes a limiting component (201) and a hooking component (202). The limiting component (201) is used to limit the relative displacement of the underframe in the connected state, and the hooking component (202) is used to realize the mechanical connection and disassembly operation between the underframe and the main body.

4. A connecting device suitable for an excavator underframe according to claim 3, characterized in that: The limiting component (201) includes a limiting block (2011) and a bolt (2012). The limiting block (2011) is adjustablely mounted on the fixing block (1012) by the bolt (2012) to limit and lock the connecting end face of the lower frame to prevent loosening or misalignment during operation.

5. A connecting device suitable for an excavator underframe according to claim 4, characterized in that: The mounting assembly (202) includes a fixing plate (2021) and a hook (2022). The fixing plate (2021) is fixedly connected to the underframe body. The hook (2022) is located at one end of the fixing plate (2021) and is used to engage with the limiting block (2011) to achieve quick assembly and disassembly.

6. A connecting device suitable for an excavator underframe according to claim 5, characterized in that: The hook (2022) and the limiting block (2011) are provided with an anti-detachment structure. After the hook is connected, it is locked by bolts (2012) to ensure that the connection device can maintain a stable connection under high-intensity working conditions, thereby improving the safety and reliability of the equipment.

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