Connecting device for working mechanism of loading machine

Abstract

The utility model belongs to the technical field of loaders, and particularly discloses a loader working mechanism connecting device which comprises a bucket body, a connecting arm is arranged on one side of the bucket body, a mounting plate is arranged between the bucket body and the connecting arm, and a connecting device is arranged between the bucket body and the mounting plate. The connecting device comprises a cross-shaped block, a plurality of clamping blocks are fixedly connected to the rear side of the cross-shaped block, two of the clamping blocks are vertically arranged, side protruding blocks are fixedly connected to the two ends of each clamping block, a cross-shaped clamping groove is formed in the mounting plate, the cross-shaped block is connected with the cross-shaped clamping groove in an inserted mode, a plurality of groove bodies are formed in the cross-shaped clamping groove, and the side protruding blocks are fixedly connected with the cross-shaped clamping groove. Pins are replaced by plug-in locking of the telescopic plates and the inserting grooves, disassembly and assembly can be completed without knocking or additional tools, when the bucket needs to be replaced, the cross block can be quickly disassembled only by reversely rotating the rotating shaft to enable the telescopic plates to be separated from the inserting grooves, the maintenance time is remarkably shortened, and the maintenance efficiency is improved. The labor cost is reduced.

Description

A loader working mechanism connecting device Technical Field

[0001] This application relates to the field of loader technology, and more specifically, to a loader working mechanism connecting device. Background Technology

[0002] The loader's working mechanism connection device is a core component that enables the loader to load, transport, and unload materials. It rigidly connects the boom, rocker arm, bucket, and hydraulic cylinders through linkages, pins, and other structures, ensuring precise force and motion transmission during operation. This device must not only withstand the enormous material load when the bucket is fully loaded but also cope with impacts and vibrations under complex working conditions; its performance directly affects the loader's working efficiency and reliability.

[0003] In existing technologies, pins are commonly used as the connecting parts between the excavator bucket and stick to achieve a hinged connection. However, in actual operation, the pins are subjected to alternating stress and shear force for extended periods, resulting in extremely complex stress conditions and requiring very high strength. With accumulated working time, pins are prone to wear, deformation, and corrosion. Once this occurs, the pin can become stuck at the connection point between the bucket and stick, making bucket disassembly and replacement extremely difficult. This not only significantly increases the time and labor costs of equipment maintenance but may also lead to prolonged equipment downtime due to delayed repairs, thereby impacting the overall project schedule. Summary of the Invention

[0004] To address the aforementioned problems, this application provides a loader working mechanism connection device.

[0005] The technical solution for the loader working mechanism connecting device provided in this application is as follows:

[0006] A loader working mechanism connecting device includes a bucket body, a connecting arm on one side of the bucket body, a mounting plate between the bucket body and the connecting arm, and a connecting device between the bucket body and the mounting plate.

[0007] The connecting device includes a cross block, and multiple locking blocks are fixedly connected to the rear side of the cross block. Two of the locking blocks are vertically arranged, and side protrusions are fixedly connected to both ends of each locking block. A cross slot is opened inside the mounting plate, and the cross block is inserted into the cross slot.

[0008] With the above technical solution, the plug-in locking of the telescopic plate and the slot replaces the pin, and the disassembly and assembly can be completed without hammering or additional tools. When the bucket needs to be replaced, simply rotate the shaft in the opposite direction to disengage the telescopic plate from the slot, and the cross block can be quickly removed, which significantly shortens the maintenance time and reduces labor costs.

[0009] Furthermore, the interior of the cross-shaped slot has multiple grooves, and multiple locking blocks and side protrusions engage with the corresponding grooves.

[0010] Furthermore, each end of the cross-shaped slot is rotatably connected to a shaft via a damping bearing, and one end of each shaft is rotatably connected to a telescopic plate.

[0011] By using the above technical solution, the telescopic plate is initially set to a vertical state, and with the design of a rotatable shaft and damping bearing, the cross block is locked quickly and securely, preventing the telescopic plate from loosening and ensuring that the connecting device remains reliably connected during operation. This effectively improves the convenience and stability of the loader's working mechanism connection.

[0012] Furthermore, each end of the cross block has a slot, and each telescopic plate is inserted into the corresponding slot.

[0013] Furthermore, a connecting plate is provided on the rear side of the mounting plate, and a side plate is fixedly connected to one end of the connecting arm near the mounting plate.

[0014] Furthermore, the connecting plate is fixedly connected to the mounting plate, and all the telescopic plates are made of stainless steel.

[0015] Furthermore, the cross block is smaller than the cross slot, and the end of the connecting arm away from the bucket body is used to connect to the loader.

[0016] Furthermore, a connecting block is fixedly connected to the front side of the cross block, and the connecting block is fixedly connected to the bucket body.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] (1) This utility model replaces the pin with the plug-in locking of the telescopic plate and the slot, so that disassembly and assembly can be completed without knocking or additional tools. When the bucket needs to be replaced, simply rotate the shaft in the opposite direction to disengage the telescopic plate from the slot, and the cross block can be quickly disassembled, which significantly shortens the maintenance time and reduces labor costs.

[0019] (2) By setting the telescopic plate to a vertical state initially and combining it with the design of a rotatable shaft and a damping bearing, this utility model achieves the effect of quickly and stably locking the cross block, preventing the telescopic plate from loosening, ensuring that the connecting device always maintains a reliable connection during operation, and effectively improving the convenience and stability of the loader's working mechanism connection. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 is a side view of this utility model;

[0022] Figure 3 is a schematic diagram of the connection structure between the mounting plate and the cross block of this utility model;

[0023] Figure 4 is a schematic diagram of the connection structure between the rotating shaft and the telescopic plate of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Bucket body; 2. Connecting arm; 3. Side plate; 4. Connecting plate; 5. Mounting plate; 6. Connecting block; 7. Cross block; 8. Slot; 9. Locking block; 10. Side protrusion; 11. Rotary shaft; 12. Telescopic plate; 13. Groove; 14. Cross slot. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] Referring to Figures 1-4, a loader working mechanism connecting device includes a bucket body 1, a connecting arm 2 on one side of the bucket body 1, a mounting plate 5 between the bucket body 1 and the connecting arm 2, and a connecting device between the bucket body 1 and the mounting plate 5.

[0027] The connecting device includes a cross block 7, and multiple locking blocks 9 are fixedly connected to the rear side of the cross block 7. Two of the locking blocks 9 are vertically arranged, and side protrusions 10 are fixedly connected to both ends of each locking block 9. A cross slot 14 is opened inside the mounting plate 5, and the cross block 7 is inserted into the cross slot 14.

[0028] When it is necessary to install the bucket body 1, first align the cross block 7 with the cross slot 14 of the mounting plate 5, and push the bucket body 1 so that the cross block 7 is inserted into the cross slot 14. At this time, the locking block 9 on the rear side of the cross block 7, including the side protrusion 10, is embedded in the corresponding groove 13 inside the cross slot 14, forming a preliminary mechanical limit to prevent the cross block 7 from shifting in the horizontal direction.

[0029] This device replaces pins with a plug-in locking mechanism between the telescopic plate 12 and the slot 8, allowing for easy assembly and disassembly without hammering or additional tools. When the bucket needs to be replaced, simply reverse the rotation of the shaft 11 to disengage the telescopic plate 12 from the slot 8, enabling quick removal of the cross block 7, significantly reducing maintenance time and labor costs.

[0030] Referring to Figures 3-4, the interior of the cross-shaped slot 14 has multiple slots 13, and multiple locking blocks 9 and side protrusions 10 are respectively engaged with the corresponding slots 13. Each end of the cross-shaped slot 14 is rotatably connected to a rotating shaft 11 through a damping bearing. One end of each rotating shaft 11 is rotatably connected to a telescopic plate 12. Each end of the cross block 7 has a slot 8, and each telescopic plate 12 is inserted into the corresponding slot 8.

[0031] In the initial state, the telescopic plate 12 is in a vertical position. After the cross block 7 is inserted into place, the rotating shaft 11 is manually rotated to move the telescopic plate 12 towards the slot 8 of the cross block 7. When it is rotated to one side of the slot 8, the telescopic plate 12 is stretched so that it is inserted into the slot 8, forming a lock and fixing the cross block 7 in the cross slot 14 to prevent it from coming off.

[0032] The damping bearing has a certain resistance, so that the shaft 11 will not rotate when it is close to a stationary state.

[0033] Referring to Figures 1-2, a connecting plate 4 is provided on the rear side of the mounting plate 5. A side plate 3 is fixedly connected to one end of the connecting arm 2 near the mounting plate 5. The connecting plate 4 is fixedly connected to the mounting plate 5. Multiple telescopic plates 12 are made of stainless steel. The size of the cross block 7 is smaller than the cross slot 14. The end of the connecting arm 2 away from the bucket body 1 is used to connect to the loader. A connecting block 6 is fixedly connected to the front side of the cross block 7. The connecting block 6 is fixedly connected to the bucket body 1.

[0034] When the bucket needs to be replaced, rotate the shaft 11 in the opposite direction. The telescopic plate 12 disengages from the slot 8 and retracts to the outside of the cross slot 14. At this time, the cross block 7 can be directly pulled out from the cross slot 14 because there is no telescopic plate 12 to limit it, thus realizing the quick disassembly of the bucket.

[0035] The stainless steel telescopic plate 12 is not easily deformed or broken, ensuring that it remains locked after being inserted into the slot 8, preventing the bucket from falling off. In terms of rust prevention, the dense chromium oxide passivation film on the stainless steel surface can effectively resist environmental factors such as moisture, dust, and corrosive substances, avoiding the phenomenon of "rusting and seizing". This ensures that the telescopic plate 12 can be unlocked and disassembled simply by rotating the shaft 11, reducing maintenance difficulty and time costs.

[0036] Working principle: During installation, first align the cross block 7 with the cross slot 14 of the mounting plate 5, and push the bucket body 1 to insert the cross block 7 into the cross slot 14. The locking block 9 and side protrusion 10 on the rear side of the cross block 7 are embedded into the corresponding groove 13, forming a preliminary mechanical limit in the horizontal direction to prevent the cross block 7 from shifting laterally. At this time, the telescopic plate 12, which is initially in a vertical position, is moved towards the slot 8 of the cross block 7 by manually rotating the rotating shaft 11 connected to the damping bearing. When the telescopic plate 12 rotates to the side of the slot 8, it is stretched to insert into the slot 8, achieving locking and firmly fixing the cross block 7 in the cross slot 14. Due to the resistance of the damping bearing, the rotating shaft 11 will not rotate on its own after coming to a stop, ensuring the stability of the locked state of the telescopic plate 12.

[0037] During operation, the loader transmits power through the connecting arm 2, via the side plate 3 and connecting plate 4 to the mounting plate 5, and then through the cross slot 14, telescopic plate 12, cross block 7 and connecting block 6 to the bucket body 1, completing the material loading and unloading operations.

[0038] When the bucket needs to be replaced, the shaft 11 is rotated in the opposite direction, the telescopic plate 12 disengages from the slot 8 and retracts to the outside of the cross slot 14, releasing the restriction on the cross block 7. At this time, the unrestrained cross block 7 can be directly pulled out from the cross slot 14, quickly completing the bucket disassembly, and then the new bucket can be installed, achieving rapid replacement.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A connecting device for a loader's working mechanism, characterized in that, include: The bucket body (1) has a connecting arm (2) on one side, and an installation plate (5) is provided between the bucket body (1) and the connecting arm (2). A connecting device is provided between the bucket body (1) and the installation plate (5). The connecting device includes a cross block (7). Multiple locking blocks (9) are fixedly connected to the rear side of the cross block (7). Two of the locking blocks (9) are vertically arranged. Side protrusions (10) are fixedly connected to both ends of each locking block (9). A cross slot (14) is opened inside the installation plate (5). The cross block (7) is inserted into the cross slot (14).

2. The loader working mechanism connecting device according to claim 1, characterized in that: The cross-shaped slot (14) has multiple slots (13) inside, and multiple locking blocks (9) and side protrusions (10) are respectively engaged with the corresponding slots (13).

3. The loader working mechanism connecting device according to claim 2, characterized in that: Each end of the cross slot (14) is rotatably connected to a rotating shaft (11) via a damping bearing, and one end of each rotating shaft (11) is rotatably connected to a telescopic plate (12).

4. The loader working mechanism connecting device according to claim 3, characterized in that: Each end of the cross block (7) is provided with a slot (8), and each telescopic plate (12) is inserted into the corresponding slot (8).

5. A loader working mechanism connecting device according to claim 4, characterized in that: The mounting plate (5) is provided with a connecting plate (4) on its rear side, and a side plate (3) is fixedly connected to one end of the connecting arm (2) near the mounting plate (5).

6. A loader working mechanism connecting device according to claim 5, characterized in that: The connecting plate (4) is fixedly connected to the mounting plate (5), and all of the telescopic plates (12) are made of stainless steel.

7. The loader working mechanism connecting device according to claim 1, characterized in that: The size of the cross block (7) is smaller than that of the cross slot (14), and the end of the connecting arm (2) away from the bucket body (1) is used to connect to the loader.

8. A loader working mechanism connecting device according to claim 1, characterized in that: A connecting block (6) is fixedly connected to the front side of the cross block (7), and the connecting block (6) is fixedly connected to the bucket body (1).

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