Multifunctional hydraulic quick-change device for skid steer loader

Abstract

The utility model discloses a multifunctional hydraulic quick-change device for a skid steer loader, and relates to the technical field of loaders. The hydraulic quick-change device comprises a hydraulic quick-change device body, a handle is rotationally arranged on the hydraulic quick-change device body, a valve port is formed in the outer side surface of the hydraulic quick-change device body, a limiting assembly is connected to the handle and the hydraulic quick-change device body, a sealing assembly is connected to the valve port, and the limiting assembly comprises a rectangular rod. According to the hydraulic quick-change device, the hydraulic quick-change device can be connected to a loading machine, then the hydraulic connecting piece can be inserted into a valve port, and then the hydraulic quick-change device can be separated from a guide pipe by rotating the sealing cap, so that the hydraulic quick-change device can be connected to the loading machine, and the hydraulic quick-change device can be connected to the loading machine. The annular air bag can be inflated through an inflating tool, the annular air bag is expanded, the expanded air bag makes contact with the outer side surface of the hydraulic connecting piece, and therefore sealing can be formed, and water and dust are prevented from entering the interior.

Description

A multi-functional hydraulic quick-change device for skid steer loaders Technical Field

[0001] This utility model relates to the field of loader technology, specifically a multi-functional hydraulic quick-change device for skid steer loaders. Background Technology

[0002] A skid steer loader is a wheeled specialized chassis equipment that uses the difference in linear speed between the wheels on both sides to achieve vehicle steering. It is mainly used in situations where the work area is confined, the ground is uneven, and the work content changes frequently. Skid steer loaders are equipped with a variety of attachments, such as sweepers, milling machines, hydraulic breakers, snow blowers, and tree transplanters, to meet different working conditions. The machine is also equipped with a quick-change attachment system to improve the main unit's working efficiency and operational flexibility.

[0003] The existing quick-assembly device's three-way valve requires the handle to be raised after assembly to cut off the device's hydraulic system. However, since the handle is not limited during use, it is prone to tilting under external force, which can cause the pin to retract and the bucket to fall. Furthermore, after the hydraulic system is connected, dust and moisture can easily enter the equipment and cause damage, as the sealing is not strong. Summary of the Invention

[0004] To address the issues of existing quick-change devices where the three-way valve requires the handle to be raised after assembly to disconnect the hydraulic system, but the lack of a handle limiter during use makes it prone to tilting under external force, potentially causing the pin to retract and the bucket to fall out, and allowing dust and moisture to easily enter the hydraulic system after connection, resulting in damage and poor sealing; the purpose of this invention is to provide a multi-functional hydraulic quick-change device for skid steer loaders.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a multi-functional hydraulic quick-change device for skid steer loaders, comprising a hydraulic quick-change device, a handle rotatably mounted on the hydraulic quick-change device, a valve port provided on the outer surface of the hydraulic quick-change device, a limit component connected to the handle and the hydraulic quick-change device, and a sealing component connected to the valve port;

[0006] The limiting component includes a rectangular rod, which is fixedly connected to the outer surface of the hydraulic quick-change device. A square groove is formed inside the rectangular rod, and a spring is fixedly provided on the inner surface of the square groove. A movable block is fixedly provided at the other end of the spring. The movable block slides against the inner surface of the square groove. A limiting rod is fixedly provided on the side of the movable block away from the spring. The limiting rod moves through the handle. A through groove is formed on the upper surface of the rectangular rod, and a through groove is fixedly provided on the upper surface of the movable block. A pull block slides in the through groove, and the pull block is fixedly connected to the movable block.

[0007] Preferably, the sealing assembly includes a retaining ring, which is fixedly connected to one side of the valve port. The inner surface of the retaining ring has an annular groove, and an annular air bladder is provided in the annular groove. A conduit is fixedly provided on the outer surface of the annular air bladder, and the conduit passes through the retaining ring. A sealing cap is threadedly connected to the outer surface of the conduit. The outer surface of the conduit has an external thread, and the inner surface of the sealing cap has an internal thread. The external thread and the internal thread are engaged and connected.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] 1. This utility model can connect a hydraulic quick-change device to a loader. Then, the hydraulic connector can be inserted into the valve port, and the sealing cap can be rotated to detach it from the guide tube. Air can be pumped into the annular airbag using an air pump to inflate the annular airbag. The inflated airbag contacts the outer surface of the hydraulic connector, thereby forming a seal and preventing water and dust from entering the interior.

[0010] 2. This utility model can connect the hydraulic quick-change device to the loader. Then, the hydraulic connector can be inserted into the valve port. Then, the sealing cap can be rotated to detach it from the guide tube. Air can be pumped into the annular airbag to inflate the annular airbag. The inflated airbag contacts the outer surface of the hydraulic connector, thereby forming a seal and preventing water and dust from entering the interior. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0012] Figure 1 is a schematic diagram of the structure of this utility model.

[0013] Figure 2 is a schematic diagram of the limiting component structure of this utility model.

[0014] Figure 3 is a schematic diagram of the fixed ring structure of this utility model.

[0015] Figure 4 is an enlarged structural schematic diagram of point A in Figure 3 of this utility model.

[0016] Figure 5 is a schematic diagram of the sealing cap structure of this utility model.

[0017] In the diagram: 1. Hydraulic quick-change device; 11. Handle; 12. Valve port; 2. Limiting assembly; 21. Rectangular rod; 22. Square groove; 23. Spring; 24. Moving block; 25. Limiting rod; 26. Limiting hole; 27. Through groove; 28. Pull block; 3. Sealing assembly; 31. Fixing ring; 32. Ring groove; 33. Annular airbag; 34. Guide tube; 35. Sealing cap; 36. External thread; 37. Internal thread. Detailed Implementation

[0018] 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.

[0019] Example: As shown in Figures 1-5, this utility model provides a multi-functional hydraulic quick-change device for skid steer loaders, including a hydraulic quick-change device 1, a handle 11 rotatably mounted on the hydraulic quick-change device 1, a valve port 12 provided on the outer surface of the hydraulic quick-change device 1, a limit assembly 2 connected to the handle 11 and the hydraulic quick-change device 1, and a sealing assembly 3 connected to the valve port 12.

[0020] The limiting component 2 includes a rectangular rod 21, which is fixedly connected to the outer surface of the hydraulic quick-change device 1. The rectangular rod 21 has an "L" shaped cross-section and a square groove 22 inside. A spring 23 is fixedly mounted on the inner surface of the square groove 22, and a moving block 24 is fixedly mounted on the other end of the spring 23. The moving block 24 slides against the inner surface of the square groove 22. A limiting rod 25 is fixedly mounted on the side of the moving block 24 away from the spring 23. The limiting rod 25 moves through the handle 11. The upper surface of the 1 has a through groove 27, and the upper surface of the movable block 24 is fixedly provided with the through groove 27. A pull block 28 is slidably provided in the through groove 27. The pull block 28 is fixedly connected to the movable block 24. After the connection is completed, the pull block 28 can be moved first, so that the limiting rod 25 can be retracted into the square groove 22. By rotating the handle 11, the hydraulic system of the quick-release device is cut off. After the pull block 28 is released, the force of the spring 23 can make the limiting rod 25 insert into the limiting hole 26, so as to limit the handle 11 and prevent the handle 11 from tilting due to the influence of external force.

[0021] The springs 23 are provided in eight arrays and are distributed between the inner surface of the square groove 22 and the moving block 24, which can improve the stability after connection. The cross-sectional shape of the pull block 28 is "T" shaped, which facilitates the connection of the moving block 24 and the movement of the pull block 28. The handle 11 has a limit hole 26, and the limit rod 25 is movably inserted into the limit hole 26 to facilitate the limitation of the handle 11.

[0022] The sealing assembly 3 includes a retaining ring 31, which is fixedly connected to one side of the valve port 12. An annular groove 32 is formed on the inner surface of the retaining ring 31, and an annular airbag 33 is disposed within the groove 32. A conduit 34 is fixedly disposed on the outer surface of the annular airbag 33, passing through the retaining ring 31. A sealing cap 35 is threaded onto the outer surface of the conduit 34, which has an external thread 36. Sealing is achieved through the sealing cap 35. An internal thread 37 is formed on the inner surface of the sealing cap 35, and the external thread 36 engages with the internal thread 37, facilitating the removal of the sealing cap 35. The hydraulic quick-change device 1 can then be connected to the loader. The hydraulic connector can be inserted into the valve port 12, and the sealing cap 35 can be rotated to detach from the conduit 34. Air can be pumped into the annular airbag 33 using an air pump, causing it to expand. The expanded airbag contacts the outer surface of the hydraulic connector, thus forming a seal and preventing water and dust from entering.

[0023] Working principle: When using this utility model, the hydraulic quick-change device 1 can be connected to the loader. Then, the hydraulic connector can be inserted into the valve port 12. Then, the sealing cap 35 can be rotated to disengage it from the guide tube 34. Air can be pumped into the annular air bag 33 by an air pumping tool to make the annular air bag 33 expand. The expanded air bag contacts the outer surface of the hydraulic connector, thereby forming a seal and preventing water and dust from entering the interior.

[0024] After the connection is completed, the limit rod 25 can be retracted into the square groove 22 by pulling the pull block 28. The hydraulic system of the quick-installation device can be cut off by turning the handle 11. After releasing the pull block 28, the limit rod 25 can be inserted into the limit hole 26 by the force of the spring 23, thereby limiting the handle 11 and preventing the handle 11 from tilting due to external forces.

[0025] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A multi-functional hydraulic quick-change device for skid steer loaders, comprising a hydraulic quick-change device (1), characterized in that: The hydraulic quick-change device (1) is rotatably provided with a handle (11), and a valve port (12) is provided on the outer surface of the hydraulic quick-change device (1). A limit assembly (2) is connected to the handle (11) and the hydraulic quick-change device (1), and a sealing assembly (3) is connected to the valve port (12). The limit assembly (2) includes a rectangular rod (21), which is fixedly connected to the outer surface of the hydraulic quick-change device (1). A square groove (22) is opened inside the rectangular rod (21), and a spring (23) is fixedly provided on the inner surface of the square groove (22). The other end of the spring (23) is fixedly provided with a moving block (24). The moving block (24) slides against the inner surface of the square groove (22). A limiting rod (25) is fixedly provided on the side of the moving block (24) away from the spring (23). The limiting rod (25) moves through the handle (11). A through groove (27) is opened on the upper surface of the rectangular rod (21). A through groove (27) is fixedly provided on the upper surface of the moving block (24). A pull block (28) is slidably provided in the through groove (27). The pull block (28) is fixedly connected to the moving block (24).

2. The multi-functional hydraulic quick-change device for a skid steer loader as described in claim 1, characterized in that, The sealing assembly (3) includes a retaining ring (31), which is fixedly connected to one side of the valve port (12). The inner surface of the retaining ring (31) is provided with an annular groove (32), and an annular airbag (33) is provided in the annular groove (32). A conduit (34) is fixedly provided on the outer surface of the annular airbag (33). The conduit (34) passes through the retaining ring (31), and a sealing cap (35) is threadedly connected to the outer surface of the conduit (34).

3. A multi-functional hydraulic quick-change device for a skid steer loader as described in claim 1, characterized in that, The springs (23) are provided in eight units, and the springs (23) array is distributed between the inner surface of the square groove (22) and the moving block (24).

4. A multi-functional hydraulic quick-change device for a skid steer loader as described in claim 1, characterized in that, The cross-sectional shape of the pull block (28) is "T".

5. A multi-functional hydraulic quick-change device for a skid steer loader as described in claim 1, characterized in that, The handle (11) has a limiting hole (26), and the limiting rod (25) is movably inserted into the limiting hole (26).

6. A multi-functional hydraulic quick-change device for a skid steer loader as described in claim 1, characterized in that, The rectangular rod (21) has an "L" shaped cross section.

7. A multi-functional hydraulic quick-change device for a skid steer loader as described in claim 2, characterized in that, The outer surface of the conduit (34) is provided with an external thread (36), and the inner surface of the sealing cap (35) is provided with an internal thread (37). The external thread (36) and the internal thread (37) are connected in a mating manner.

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