Quick release device and loader

Abstract

The utility model relates to engineering vehicle technical field, specifically disclose quick detachable device and loader, this quick detachable device includes support frame, quick detachable mechanism and quick detachable frame, support frame includes pull rod connecting plate and movable arm connecting plate, pull rod connecting plate and movable arm connecting plate are opposite fixed, pull rod connecting plate is hinged with the pull rod of working device, movable arm connecting plate is hinged with the movable arm of working device, quick detachable mechanism includes hanging rod and quick detachable assembly, hanging rod is along car width direction respectively with pull rod connecting plate and movable arm connecting plate fixedly connected, and quick detachable assembly is solid and set up in support frame, quick detachable frame is connected with the tool, and quick detachable frame includes two quick detachable plates that are along car width direction interval arrangement, and quick detachable plate is provided with hook and insertion hole, two hooks are respectively hung with hanging rod, and two telescopic rods of quick detachable assembly can reverse telescopic along car width direction, and include the first position that two telescopic rods are worn in two insertion holes, and the second position that two telescopic rods are pulled out from two insertion holes. Realize the quick replacement of working device and tool.

Description

Technical Field

[0001] This utility model relates to the field of engineering vehicle technology, and in particular to a quick-release device and a loader. Background Technology

[0002] Traditional loaders, as important engineering machinery, are mainly used for loading and unloading stockpiles of materials and are widely used in various sectors of the national economy, such as construction, mining, railways, highways, and hydropower. However, traditional loaders have relatively limited functions, mainly limited to loading and unloading operations, while excavation operations require specialized excavators.

[0003] To meet diverse operational needs, multi-functional loaders combining loading / unloading and digging functions have emerged in the market, also known as "two-way loaders" in the traditional sense. These loaders are typically equipped with two independent working devices: a loading / unloading device at the front for traditional material handling, and a digging device at the rear for excavation tasks.

[0004] However, existing backhoe loaders present numerous technical challenges in practical applications. Firstly, the need for two complete working devices, each requiring an independent mounting structure and operating system, results in a complex overall structure and high manufacturing costs. Secondly, they demand a high level of expertise from the operator, particularly when operating the rear excavating device. Because the device is located behind the driver, frequent head turns or reliance on rearview mirrors, cameras, and other auxiliary equipment hinder operation and impact work efficiency.

[0005] Furthermore, in actual operation, when the loader is loading materials, the rear working device significantly affects the loader's backward stability and steering flexibility, requiring a large operating space. Conversely, when digging, the front working device also hinders the machine's backward and steering movements. This mutual interference not only limits the overall operating efficiency of the machine but also affects operational safety to some extent.

[0006] Therefore, how to simplify the structural design, improve the ease of operation, and optimize the overall performance of the machine has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] The purpose of this utility model is to provide a quick-release device and a loader to solve the problems of complex structure, poor operation convenience and poor overall operation performance of existing loaders with digging function.

[0008] On the one hand, this utility model provides a quick-release device for connecting the working device and attachments of a loader, including:

[0009] A support frame, the support frame including a tie rod connecting plate and a boom connecting plate, the tie rod connecting plate and the boom connecting plate being fixed relative to each other, the tie rod connecting plate being used for pivot connection with the tie rod of the working device, and the boom connecting plate being used for pivot connection with the boom of the working device;

[0010] The quick-release mechanism includes a hanging rod and a quick-release assembly. The hanging rod is fixedly connected to the tie rod connecting plate and the boom connecting plate along the vehicle width direction, and the quick-release assembly is fixedly mounted on the support frame.

[0011] A quick-release bracket is connected to the attachment. The quick-release bracket includes two quick-release plates spaced apart along the vehicle width direction. Each quick-release plate is provided with a hook and a insertion hole. The two hooks are respectively hooked to the hanging rod. The two telescopic rods of the quick-release assembly can extend and retract in opposite directions along the vehicle width direction and include a first position and a second position. In the first position, the two telescopic rods pass through the two insertion holes. In the second position, the two telescopic rods are pulled out from the two insertion holes.

[0012] As a preferred technical solution for the quick-release device, two tie rod connecting plates are provided, and the two tie rod connecting plates are spaced apart along the vehicle width direction, with one end of the tie rod inserted between the two tie rod connecting plates;

[0013] The support frame also includes a tie rod pivot shaft, which passes through the tie rod and the two tie rod connecting plates.

[0014] As a preferred technical solution for the quick-release device, two boom connecting plates are provided, the two boom connecting plates are spaced apart along the vehicle width direction, the two tie rod connecting plates are located between the two boom connecting plates, and the two booms are pivotally connected to the two boom connecting plates respectively.

[0015] The support frame also includes a first fixing rod, which passes through the two tie rod connecting plates and is fixedly connected to the tie rod connecting plates. The two ends of the first fixing rod are respectively fixedly connected to the two boom connecting plates.

[0016] As a preferred technical solution for the quick-release device, the boom connecting plate includes a first side plate and a second side plate that are spaced apart and relatively fixed along the vehicle width direction. The first side plate is fixedly connected to the first fixing rod, and the boom is inserted between the corresponding first side plate and the second side plate.

[0017] The support frame also includes two boom pivot shafts that correspond one-to-one with the two boom connecting plates. The boom pivot shafts pass through the corresponding first side plate, the corresponding boom, and the corresponding second side plate.

[0018] As a preferred technical solution for the quick-release device, the boom connecting plate further includes a fixing plate, which is fixedly connected to the first side plate and the second side plate respectively.

[0019] As a preferred technical solution for the quick-release device, the hanging rod passes through the tie rod connecting plate and the boom connecting plate;

[0020] The two quick-release plates correspond one-to-one with the two boom connecting plates. The quick-release plates are inserted between the corresponding first side plate and the corresponding second side plate, and the hooks are connected to the hanging rods between the corresponding first side plate and the corresponding second side plate.

[0021] As a preferred technical solution for the quick-release device, the two telescopic rods, the two boom connecting plates, and the two quick-release plates of the quick-release assembly correspond one-to-one. The first side plate and the second side plate are respectively provided with a first through hole and a second through hole along the vehicle width direction. At the first position, the quick-release assembly can drive the telescopic rod to pass through the corresponding first through hole, the corresponding insertion hole, and the corresponding second through hole in sequence. At the second position, the quick-release assembly can drive the telescopic rod to be pulled out from the corresponding second through hole, the corresponding insertion hole, and the corresponding first through hole in sequence.

[0022] As a preferred technical solution for the quick-release device, the telescopic rod is slidably mounted on the support frame along the vehicle width direction;

[0023] The quick-release assembly also includes a bidirectional telescopic cylinder, which is fixed to the support frame, and the two telescopic parts of the bidirectional telescopic cylinder are respectively connected to the two telescopic rods.

[0024] As a preferred technical solution for the quick-release device, the support frame further includes a protective cover, which is connected to the first through holes on the two first side plates respectively, and the bidirectional telescopic cylinder is disposed inside the protective cover.

[0025] On the other hand, the present invention provides a loader, including a working device, attachments, and a quick-release device as described in any of the above embodiments, wherein the quick-release device is used to connect the working device and the attachments.

[0026] The beneficial effects of this utility model are:

[0027] The quick-release device includes a support frame, a quick-release mechanism, and a quick-release bracket. The support frame includes a tie rod connecting plate and a boom connecting plate, which are fixed relative to each other. The tie rod connecting plate is used to pivotally connect with the tie rod of the working device, and the boom connecting plate is used to pivotally connect with the boom of the working device. The quick-release mechanism includes a hanging rod and a quick-release assembly. The hanging rod is fixedly connected to the tie rod connecting plate and the boom connecting plate along the vehicle width direction, respectively. The quick-release assembly is fixed to the support frame. The quick-release bracket is connected to the attachment. The quick-release bracket includes two quick-release plates spaced apart along the vehicle width direction. The quick-release plates are provided with hooks and insertion holes. The two hooks are respectively hooked to the hanging rod. The two telescopic rods of the quick-release assembly can extend and retract in opposite directions along the vehicle width direction and include a first position and a second position. In the first position, the two telescopic rods pass through the two insertion holes. In the second position, the two telescopic rods are pulled out from the two insertion holes. The support frame is mounted on the working device, and the quick-release frame is connected to the attachment. When the two hooks on the quick-release frame are hooked onto the hanging rod, the quick-release assembly drives the two telescopic rods to the first position, thereby inserting the two telescopic rods into the corresponding two insertion holes. This restrains the support frame and the quick-release frame, preventing the hanging rods from detaching from the hooks, thus achieving a fixed connection between the support frame and the quick-release frame. This allows the working device to drive the attachment to operate. When it is necessary to change the attachment, simply switch the quick-release assembly from the first position to the second position, causing the two telescopic rods to be pulled out from the two insertion holes. This releases the restraint between the support frame and the quick-release frame, allowing the hanging rods to detach from the hooks, enabling quick disassembly and replacement of the attachment. The quick-release device allows for rapid replacement of the working device and attachments on the loader, thus enabling the loader to be multi-purpose while maintaining a simple structure, convenient operation, and superior overall operating performance. Attached Figure Description

[0028] Figure 1 This is an assembly diagram of the working device, attachments, and quick-release device in an embodiment of this utility model;

[0029] Figure 2 This is a schematic diagram of the quick-release device in an embodiment of the present invention. Figure 1 ;

[0030] Figure 3 This is a schematic diagram of the quick-release device in an embodiment of the present invention. Figure 2 ;

[0031] Figure 4 This is a schematic diagram of the quick-release device in an embodiment of the present invention. Figure 3 ;

[0032] Figure 5 This is a schematic diagram of the quick-release device in an embodiment of the present invention. Figure 4 ;

[0033] Figure 6 This is a schematic diagram of the assembly of the attachments and quick-release brackets in the embodiments of this utility model.

[0034] In the picture:

[0035] X, vehicle width direction;

[0036] 100. Working device; 101. Tie rod; 102. Boom; 200. Attachments;

[0037] 1. Support frame; 11. Tie rod connecting plate; 12. Boom connecting plate; 121. First side plate; 1211. First through hole; 122. Second side plate; 1221. Second through hole; 123. Fixing plate; 13. Tie rod pivot shaft; 14. First fixing rod; 15. Boom pivot shaft; 16. Protective cover;

[0038] 2. Quick-release mechanism; 21. Hanging rod; 221. Telescopic rod; 222. Two-way telescopic cylinder;

[0039] 3. Quick-release bracket; 31. Quick-release plate; 311. Hook; 312. Plug-in hole. Detailed Implementation

[0040] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0044] like Figures 1 to 6As shown, this embodiment provides a quick-release device, which includes a support frame 1, a quick-release mechanism 2, and a quick-release frame 3. The support frame 1 includes a tie rod connecting plate 11 and a boom connecting plate 12, which are fixed relative to each other. The tie rod connecting plate 11 is used to pivotally connect with the tie rod 101 of the working device 100, and the boom connecting plate 12 is used to pivotally connect with the boom 102 of the working device 100. The quick-release mechanism 2 includes a hanging rod 21 and a quick-release assembly. The hanging rod 21 is fixedly connected to the tie rod connecting plate 11 and the boom connecting plate 12 along the vehicle width direction X. The quick-release assembly is fixed to the support frame 1; the quick-release frame 3 is connected to the attachment 200. The quick-release frame 3 includes two quick-release plates 31 spaced apart along the vehicle width direction X. The quick-release plates 31 are provided with hooks 311 and insertion holes 312. The two hooks 311 are respectively hooked to the hanging rod 21. The two telescopic rods 221 of the quick-release assembly can extend and retract in opposite directions along the vehicle width direction X and include a first position and a second position. In the first position, the two telescopic rods 221 pass through the two insertion holes 312. In the second position, the two telescopic rods 221 are pulled out from the two insertion holes 312. The support frame 1 is mounted on the working device 100. The quick-release frame 3 is connected to the attachment 200. When the two hooks 311 on the quick-release frame 3 are hung on the hanging rod 21, the quick-release assembly drives the two telescopic rods 221 to the first position, thereby inserting the two telescopic rods 221 into the corresponding two insertion holes 312. This restrains the support frame 1 and the quick-release frame 3, preventing the hanging rods 21 from detaching from the hooks 311. This achieves a fixed connection between the support frame 1 and the quick-release frame 3, enabling the working device 100 to drive the attachment 200 to operate. When the attachment 200 needs to be replaced, the quick-release assembly is switched from the first position to the second position, causing the two telescopic rods 221 to be pulled out from the two insertion holes 312. This removes the restraint between the support frame 1 and the quick-release frame 3, allowing the hanging rods 21 to detach from the hooks 311, thus enabling the quick disassembly and replacement of the attachment 200. The quick-release device enables rapid replacement of the working device 100 and attachments 200, thereby achieving multi-purpose functionality for the loader while maintaining a simple structure, convenient operation, and superior overall performance.

[0045] In addition, compared to the tie rod 101 and boom 102 being pivotally connected to a single connecting plate at the same time, the tie rod 101 and boom 102 are pivotally connected to the tie rod connecting plate 11 and boom connecting plate 12 respectively, thereby reducing the force on a single connecting plate. The load is more reasonably distributed, the geometric stiffness is higher, and the overall strength and stability of the support frame 1 are improved.

[0046] Optionally, two tie rod connecting plates 11 are provided, spaced apart along the vehicle width direction X. One end of the tie rod 101 is inserted between the two tie rod connecting plates 11. The support frame 1 also includes a tie rod pivot shaft 13, which passes through the tie rod 101 and the two tie rod connecting plates 11. In this embodiment, compared to one tie rod connecting plate 11 being pivotally connected to the tie rod 101 via the tie rod pivot shaft 13, two tie rod connecting plates 11 being pivotally connected to the tie rod 101 via the tie rod pivot shaft 13 can more reasonably distribute the force exerted by the tie rod 101 on the two tie rod connecting plates 11, thereby making the force on a single tie rod connecting plate 11 more stable and less prone to deformation or tearing.

[0047] Optionally, the tie rod pivot shaft 13 is provided with an oil passage, through which lubricating oil can be injected between the tie rod 101 and the tie rod pivot shaft 13, thereby alleviating wear between the tie rod 101 and the tie rod pivot shaft 13.

[0048] Optionally, two boom connecting plates 12 are provided, spaced apart along the vehicle width direction X. Two tie rod connecting plates 11 are located between the two boom connecting plates 12, and the two booms 102 are pivotally connected to the two boom connecting plates 12 respectively. The support frame 1 also includes a first fixing rod 14, which passes through the two tie rod connecting plates 11 and is fixedly connected to them. The two ends of the first fixing rod 14 are fixedly connected to the two boom connecting plates 12 respectively. In this embodiment, the first fixing rod 14 passes through the two tie rod connecting plates 11, and the first fixing rod 14 and the tie rod connecting plates 11 are fixed by welding. The two boom connecting plates 12 abut against the two ends of the first fixing rod 14 respectively, and are then fixedly connected to the two ends of the first fixing rod 14 by welding.

[0049] Optionally, the boom connecting plate 12 includes a first side plate 121 and a second side plate 122 spaced apart and relatively fixed along the vehicle width direction X. The first side plate 121 is fixedly connected to the first fixed rod 14, and the boom 102 is inserted between the corresponding first side plate 121 and the corresponding second side plate 122. The support frame 1 also includes two boom pivot shafts 15 corresponding to the two boom connecting plates 12. The boom pivot shafts 15 pass through the corresponding first side plate 121, the corresponding boom 102, and the corresponding second side plate 122. In this embodiment, the first side plate 121 and the second side plate 122 can more evenly distribute the force exerted by the boom 102, thereby improving the strength and stability of the boom connecting plate 12.

[0050] Optionally, the boom pivot shaft 15 is provided with an oil passage, through which lubricating oil can be injected between the boom 102 and the boom pivot shaft 15, thereby alleviating wear between the boom 102 and the boom pivot shaft 15.

[0051] Optionally, the boom connecting plate 12 further includes a fixing plate 123, which is fixedly connected to the first side plate 121 and the second side plate 122 respectively. In this embodiment, the fixing plate 123 is disposed between the first side plate 121 and the second side plate 122 and is welded and fixed to the first side plate 121 and the second side plate 122 respectively, so that the fixing plate 123 can achieve relative fixation of the first side plate 121 and the second side plate 122.

[0052] In other embodiments, the first side plate 121, the fixing plate 123, and the second side plate 122 may be integrally formed.

[0053] Optionally, the hanging rod 21 passes through the tie rod connecting plate 11 and the boom connecting plate 12; two quick-release plates 31 correspond one-to-one with the two boom connecting plates 12, and the quick-release plates 31 are inserted between the corresponding first side plate 121 and the corresponding second side plate 122. The hook 311 is hooked to the hanging rod 21 between the corresponding first side plate 121 and the corresponding second side plate 122. In this embodiment, the hook 311 is hooked to the hanging rod 21 between the corresponding first side plate 121 and the corresponding second side plate 122, wherein the first side plate 121 and the second side plate 122 can support the hanging rod 21 on both sides of the hook 311, thereby improving the strength of the hanging rod 21 and the stability of the connection between the hanging rod 21 and the hook 311. The hanging rod 21 passing through the tie rod connecting plate 11 and the boom connecting plate 12 further improves the overall strength and stability of the support frame 1.

[0054] Optionally, the two telescopic rods 221, the two boom connecting plates 12, and the two quick-release plates 31 of the quick-release assembly correspond one-to-one. The first side plate 121 and the second side plate 122 are respectively provided with a first through hole 1211 and a second through hole 1221 along the vehicle width direction X. In the first position, the quick-release assembly can drive the telescopic rod 221 to pass through the corresponding first through hole 1211, the corresponding insertion hole 312, and the corresponding second through hole 1221 in sequence. In the second position, the quick-release assembly can drive the telescopic rod 221 to be pulled out from the corresponding second through hole 1221, the corresponding insertion hole 312, and the corresponding first through hole 1211 in sequence. In this embodiment, in the first position, the first side plate 121 and the second side plate 122 can support both ends of the telescopic rod 221, thereby improving the stability of the connection between the telescopic rod 221 and the support frame 1 and the quick-release frame 3.

[0055] Optionally, the telescopic rod 221 is slidably mounted on the support frame 1 along the vehicle width direction X; the quick-release assembly also includes a bidirectional telescopic cylinder 222, which is fixed to the support frame 1, and its two telescopic parts are respectively connected to the two telescopic rods 221. In this embodiment, the bidirectional telescopic cylinder 222 can drive the two telescopic rods 221 to move synchronously in opposite directions. In other embodiments, the bidirectional telescopic cylinder 222 can be replaced with two unidirectional telescopic cylinders.

[0056] Optionally, the telescopic part of the bidirectional telescopic cylinder 222 is hinged to the corresponding telescopic rod 221. When the telescopic rod 221 is subjected to a radial force from the boom 102, the telescopic rod 221 may undergo elastic deformation. In order to avoid deformation of the telescopic part caused by the deformation of the telescopic rod 221, the telescopic part is hinged to the corresponding telescopic rod 221.

[0057] Optionally, the bidirectional telescopic cylinder 222 is a hydraulic bidirectional telescopic cylinder. In other embodiments, an electric or pneumatic bidirectional telescopic cylinder may also be used.

[0058] Optionally, the support frame 1 further includes a protective cover 16, which communicates with the first through holes 1211 on the two first side plates 121 respectively, and the bidirectional telescopic cylinder 222 is disposed inside the protective cover 16. In this embodiment, the protective cover 16 can protect the bidirectional telescopic cylinder 222 and prevent it from colliding with other components. At the same time, the protective cover 16 is fixedly connected to the two tie rod connecting plates 11 and the two first side plates 121 respectively, further improving the strength and stability of the overall structure of the support frame 1.

[0059] This embodiment also provides a loader, including a working device 100, an attachment 200, and the quick-release device described above. The quick-release device is used to connect the working device 100 and the attachment 200 of the loader. The attachment 200 can be a bucket, a digging bucket, or a hydraulic hammer, etc.

[0060] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A quick-release device for connecting the working device (100) and attachments (200) of a loader, characterized in that, include: The support frame (1) includes a tie rod connecting plate (11) and a boom connecting plate (12). The tie rod connecting plate (11) and the boom connecting plate (12) are fixed relative to each other. The tie rod connecting plate (11) is used to pivotally connect with the tie rod (101) of the working device (100), and the boom connecting plate (12) is used to pivotally connect with the boom (102) of the working device (100). The quick-release mechanism (2) includes a hanging rod (21) and a quick-release assembly. The hanging rod (21) is fixedly connected to the tie rod connecting plate (11) and the boom connecting plate (12) along the vehicle width direction (X). The quick-release assembly is fixedly mounted on the support frame (1). The quick-release bracket (3) is connected to the attachment (200). The quick-release bracket (3) includes two quick-release plates (31) spaced apart along the vehicle width direction (X). The quick-release plates (31) are provided with hooks (311) and insertion holes (312). The two hooks (311) are respectively hooked to the hanging rod (21). The two telescopic rods (221) of the quick-release assembly can extend and retract in opposite directions along the vehicle width direction (X) and include a first position and a second position. In the first position, the two telescopic rods (221) pass through the two insertion holes (312). In the second position, the two telescopic rods (221) are pulled out from the two insertion holes (312).

2. The quick-release device according to claim 1, characterized in that, There are two tie rod connecting plates (11), and the two tie rod connecting plates (11) are spaced apart along the vehicle width direction (X). One end of the tie rod (101) is inserted between the two tie rod connecting plates (11). The support frame (1) also includes a tie rod pivot shaft (13), which passes through the tie rod (101) and the two tie rod connecting plates (11).

3. The quick-release device according to claim 2, characterized in that, There are two boom connecting plates (12), which are spaced apart along the vehicle width direction (X). Two tie rod connecting plates (11) are located between the two boom connecting plates (12), and the two booms (102) are pivotally connected to the two boom connecting plates (12) respectively. The support frame (1) further includes a first fixing rod (14), which passes through the two tie rod connecting plates (11) and is fixedly connected to the tie rod connecting plates (11). The two ends of the first fixing rod (14) are respectively fixedly connected to the two boom connecting plates (12).

4. The quick-release device according to claim 3, characterized in that, The boom connecting plate (12) includes a first side plate (121) and a second side plate (122) that are spaced apart and relatively fixed along the vehicle width direction (X). The first side plate (121) is fixedly connected to the first fixed rod (14), and the boom (102) is inserted between the corresponding first side plate (121) and second side plate (122). The support frame (1) also includes two boom pivot shafts (15) corresponding to the two boom connecting plates (12) respectively. The boom pivot shafts (15) are inserted through the corresponding first side plate (121), the corresponding boom (102) and the corresponding second side plate (122).

5. The quick-release device according to claim 4, characterized in that, The boom connecting plate (12) also includes a fixing plate (123), which is fixedly connected to the first side plate (121) and the second side plate (122) respectively.

6. The quick-release device according to claim 4, characterized in that, The hanging rod (21) passes through the tie rod connecting plate (11) and the boom connecting plate (12). The two quick-release plates (31) correspond one-to-one with the two boom connecting plates (12). The quick-release plates (31) are inserted between the corresponding first side plate (121) and the corresponding second side plate (122). The hook (311) is hooked to the hanging rod (21) between the corresponding first side plate (121) and the corresponding second side plate (122).

7. The quick-release device according to claim 6, characterized in that, The two telescopic rods (221), the two boom connecting plates (12), and the two quick-release plates (31) of the quick-release assembly correspond one-to-one. The first side plate (121) and the second side plate (122) are respectively provided with a first through hole (1211) and a second through hole (1221) along the vehicle width direction (X). At the first position, the quick-release assembly can drive the telescopic rod (221) to pass through the corresponding first through hole (1211), the corresponding insertion hole (312), and the corresponding second through hole (1221) in sequence. At the second position, the quick-release assembly can drive the telescopic rod (221) to be pulled out from the corresponding second through hole (1221), the corresponding insertion hole (312), and the corresponding first through hole (1211) in sequence.

8. The quick-release device according to claim 7, characterized in that, The telescopic rod (221) is slidably mounted on the support frame (1) along the vehicle width direction (X); The quick-release assembly also includes a bidirectional telescopic cylinder (222), which is fixed to the support frame (1), and the two telescopic parts of the bidirectional telescopic cylinder (222) are respectively connected to the two telescopic rods (221).

9. The quick-release device according to claim 8, characterized in that, The support frame (1) also includes a protective cover (16), which is connected to the first through holes (1211) on the two first side plates (121) respectively, and the bidirectional telescopic cylinder (222) is disposed inside the protective cover (16).

10. A loader, characterized in that, It includes a working device (100), an attachment (200), and a quick-release device as described in any one of claims 1-9, the quick-release device being used to connect the working device (100) and the attachment (200).

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