Quick change device for engineering machinery

Abstract

The utility model provides a quick change device for engineering machinery, which comprises a connecting seat connected to the engineering machinery, a fixed clamping hook matched with a first shaft pin of an accessory and a movable clamping hook matched with a second shaft pin of the accessory are arranged on the connecting seat, the fixed clamping hook is fixed on one side of the connecting seat, and the movable clamping hook is fixed on the other side of the connecting seat. The movable clamping hook is rotationally connected to the other side of the connecting base, the swing angle of the movable clamping hook is controlled through the adjusting assembly, one end of the adjusting assembly is rotationally connected to the connecting base, and the other end of the adjusting assembly is rotationally connected to the movable clamping hook. According to the structure, under the cooperation of the fixed clamping hook and the movable clamping hook, the threaded rod of the adjusting assembly can be rotated through an electric tool, so that the threaded rod stretches out and draws back relative to the threaded sleeve to drive the movable clamping hook to rotate, the accessory can be conveniently and rapidly replaced, and the replacement efficiency is improved; and meanwhile, under the cooperation of the clamping groove of the positioning piece and the polygonal column, the rotation of the polygonal column can be conveniently limited, so that the movable clamping hook is prevented from loosening.

Description

Technical Field

[0001] This utility model relates to the technical field of quick-change devices for engineering machinery, and in particular to a quick-change device for engineering machinery. Background Technology

[0002] Construction machinery is an important component of the equipment manufacturing industry. Among construction machinery, excavators are earthmoving machines used to dig materials above or below the machine's bearing surface and load them into transport vehicles or unload them at stockpiles. Excavators consist of a power unit, working device, slewing mechanism, control mechanism, transmission mechanism, and traveling mechanism. To adapt to different operational needs, small excavators require frequent changes of attachments during construction operations.

[0003] Currently, the connection between the bucket attachments of mini excavators and the excavator body is mainly secured by retaining pins. When changing different attachments, the attachments are usually fixed to the excavator's working device by manually inserting and pulling the pins. This method of attachment replacement easily increases manual labor and reduces replacement efficiency. Utility Model Content

[0004] This utility model discloses a quick-change device for engineering machinery, which mainly solves the problem that when changing attachments on traditional excavators, the attachments are changed manually by inserting and pulling pins, which easily increases manual labor and reduces replacement efficiency.

[0005] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows:

[0006] This utility model provides a quick-change device for engineering machinery, including a connecting seat connected to the engineering machinery. The connecting seat is provided with a fixed hook that cooperates with a first shaft pin of the attachment and a movable hook that cooperates with a second shaft pin of the attachment. The fixed hook is fixed to one side of the connecting seat, and the movable hook is rotatably connected to the other side of the connecting seat. The swing angle of the movable hook is controlled by an adjustment component. One end of the adjustment component is rotatably connected to the connecting seat, and the other end is rotatably connected to the movable hook.

[0007] The adjustment assembly includes a threaded sleeve rotatably connected to a movable hook, a threaded rod rotatably connected to a connecting seat, and a positioning element. The threaded rod is threadedly connected to the threaded sleeve. A polygonal column is provided on the threaded rod at the position corresponding to the positioning element. A rotating hole is provided through the positioning element. The polygonal column passes through the rotating hole. The inner wall of the rotating hole is provided with multiple concave slots. The slots match the edges of the polygonal column.

[0008] In one embodiment, the adjustment assembly further includes a first rotating member, which includes a first rotating shaft and a first rotating sleeve mounted on a connecting seat. The first rotating sleeve is rotatably connected to the first rotating shaft, and the threaded rod passes through the first rotating sleeve.

[0009] In one embodiment, the positioning element is mounted on the first rotating sleeve.

[0010] In one embodiment, the adjustment assembly further includes a second rotating member, which includes a second rotating shaft and a second rotating sleeve mounted on a movable hook. The second rotating sleeve is rotatably connected to the second rotating shaft, and the threaded sleeve is mounted on the second rotating sleeve.

[0011] In one embodiment, a protective member is provided on the side of the first rotating sleeve facing the threaded rod. The protective member includes a mounting plate installed on the first rotating sleeve, and a shielding plate is provided on the upper and lower sides of the mounting plate, the shielding plate being used to shield the threaded rod.

[0012] In one embodiment, a limiting ring is provided on the threaded rod, and the limiting ring is disposed on the side of the first rotating sleeve facing the threaded rod.

[0013] The advantages or beneficial effects of the above technical solution include at least the following: with the cooperation of the fixed hook and the movable hook, and with the cooperation of the threaded sleeve and the threaded rod of the adjusting component, the threaded rod can be rotated by a power tool, so that the threaded rod can extend and retract relative to the threaded sleeve, thereby driving the rotation of the movable hook. This allows the first and second shaft pins of the attachment to be locked between the fixed hook and the movable hook, facilitating quick replacement of the attachment and improving replacement efficiency. At the same time, with the cooperation of the slot of the positioning component and the polygonal column, the rotation of the polygonal column can be easily restricted to position the movable hook and prevent it from loosening. Attached Figure Description

[0014] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0015] Figure 1 A schematic diagram of a quick-change device for engineering machinery according to an exemplary embodiment of the present invention is shown;

[0016] Figure 2 An exemplary embodiment of the present invention is shown. Figure 1 A cross-sectional schematic diagram;

[0017] Figure 3A schematic diagram of an adjustment component according to an exemplary embodiment of the present invention is shown;

[0018] Figure 4 A schematic diagram of a threaded rod according to an exemplary embodiment of the present invention is shown;

[0019] Figure 5 A schematic diagram of a positioning member according to an exemplary embodiment of the present invention is shown;

[0020] Figure 6 A schematic diagram of a protective member according to an exemplary embodiment of the present invention is shown;

[0021] Figure 7 A schematic diagram of an attachment according to an exemplary embodiment of the present invention is shown.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Connector;

[0024] 2. Fixing hook;

[0025] 3. Activity card hook;

[0026] 4. Adjust components;

[0027] 41. Threaded sleeve; 42. Threaded rod; 421. Polygonal column; 422. Limiting ring; 43. Positioning component; 431. Rotating hole; 432. Slot; 44. First rotating component; 441. First rotating shaft; 442. First rotating sleeve; 45. Second rotating component; 451. Second rotating shaft; 452. Second rotating sleeve; 46. Protective component; 461. Mounting plate; 462. Cover plate;

[0028] 5. Attachments;

[0029] 51. First axle pin; 52. Second axle pin. Detailed Implementation

[0030] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0031] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0033] It should be noted that the terms "a" and "a plurality of" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0034] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0035] See Figures 1 to 5 The present invention provides a quick-change device for engineering machinery, including a connecting seat 1 connected to the engineering machinery. The connecting seat 1 is provided with a fixed hook 2 that cooperates with the first shaft pin 51 of the attachment 5 and a movable hook 3 that cooperates with the second shaft pin 52 of the attachment 5. The fixed hook 2 is fixed to one side of the connecting seat 1, and the movable hook 3 is rotatably connected to the other side of the connecting seat 1. The swing angle of the movable hook 3 is controlled by an adjustment component 4. One end of the adjustment component 4 is rotatably connected to the connecting seat 1, and the other end is rotatably connected to the movable hook 3.

[0036] The adjustment component 4 includes a threaded sleeve 41 rotatably connected to the movable hook 3, a threaded rod 42 rotatably connected to the connecting seat 1, and a positioning element 43. The threaded rod 42 is threadedly connected to the threaded sleeve 41. A polygonal post 421 is provided on the threaded rod 42 at the position corresponding to the positioning element 43. A rotating hole 431 is passed through the positioning element 43. The polygonal post 421 passes through the rotating hole 431. The inner wall of the rotating hole 431 is provided with multiple concave slots 432. The slots 432 match the edges of the polygonal post 421.

[0037] With the above structure, through the cooperation of the fixed hook 2 and the movable hook 3, and the cooperation of the threaded sleeve 41 and the threaded rod 42 of the adjusting component 4, the threaded rod 42 can be rotated by a power tool, so that the threaded rod 42 can extend and retract relative to the threaded sleeve 41, thereby driving the rotation of the movable hook 3. This allows the first shaft pin 51 and the second shaft pin 52 of the attachment 5 to be locked between the fixed hook 2 and the movable hook 3, so as to facilitate the quick replacement of the attachment 5 and improve the replacement efficiency. At the same time, with the cooperation of the slot 432 of the positioning component 43 and the polygonal column 421, the rotation of the polygonal column 421 can be easily restricted, so as to position the movable hook 3 and prevent the movable hook 3 from loosening.

[0038] In one embodiment, see Figure 3 , Figure 4 , Figure 5 and Figure 6 The adjusting assembly 4 also includes a first rotating component 44, which includes a first rotating shaft 441 and a first rotating sleeve 442 mounted on the connecting seat 1. The first rotating sleeve 442 is rotatably connected to the first rotating shaft 441, and the threaded rod 42 passes through the first rotating sleeve 442. In practical applications, the threaded rod 42 can be rotatably connected to the connecting seat 1 through the cooperation of the first rotating shaft 441 and the first rotating sleeve 442 of the first rotating component 44.

[0039] The positioning element 43 is mounted on the first rotating sleeve 442. In practical applications, mounting the positioning element 43 on the first rotating sleeve 442 facilitates the engagement of the positioning element 43 with the polygonal column 421.

[0040] The adjusting assembly 4 also includes a second rotating component 45, which includes a second rotating shaft 451 and a second rotating sleeve 452 mounted on the movable hook 3. The second rotating sleeve 452 is rotatably connected to the second rotating shaft 451, and a threaded sleeve 41 is mounted on the second rotating sleeve 452. In practical applications, the threaded sleeve 41 can be rotatably connected to the movable hook 3 through the cooperation of the second rotating shaft 451 and the second rotating sleeve 452 of the second rotating component 45.

[0041] A protective element 46 is provided on the side of the first rotating sleeve 442 facing the threaded rod 42. The protective element 46 includes a mounting plate 461 installed on the first rotating sleeve 442, and a baffle plate 462 is provided on the upper and lower sides of the mounting plate 461 respectively. The baffle plate 462 is used to cover the threaded rod 42. In practical applications, the baffle plate 462 of the protective element 46 can effectively protect the threaded rod 42.

[0042] A limiting ring 422 is provided on the threaded rod 42, and the limiting ring 422 is located on the side of the first rotating sleeve 442 facing the threaded rod 42. In practical applications, the limiting ring 422 can restrict the threaded rod 42 to the first rotating member 44, allowing the threaded rod 42 to rotate on the first rotating member 44.

[0043] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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.

[0044] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above-described invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A quick-change device for engineering machinery, characterized in that, The device includes a connecting seat for use on engineering machinery. The connecting seat is provided with a fixed hook that engages with a first axle pin of the attachment and a movable hook that engages with a second axle pin of the attachment. The fixed hook is fixed to one side of the connecting seat, and the movable hook is rotatably connected to the other side of the connecting seat. The swing angle of the movable hook is controlled by an adjustment component. One end of the adjustment component is rotatably connected to the connecting seat, and the other end is rotatably connected to the movable hook. The adjustment assembly includes a threaded sleeve rotatably connected to a movable hook, a threaded rod rotatably connected to a connecting seat, and a positioning element. The threaded rod is threadedly connected to the threaded sleeve. A polygonal column is provided on the threaded rod at the position corresponding to the positioning element. A rotating hole is provided through the positioning element. The polygonal column passes through the rotating hole. The inner wall of the rotating hole is provided with multiple concave slots. The slots match the edges of the polygonal column.

2. The quick-change device for engineering machinery as described in claim 1, characterized in that, The adjustment assembly further includes a first rotating component, which includes a first rotating shaft and a first rotating sleeve mounted on a connecting seat. The first rotating sleeve is rotatably connected to the first rotating shaft, and the threaded rod passes through the first rotating sleeve.

3. The quick-change device for engineering machinery as described in claim 2, characterized in that, The positioning element is installed on the first rotating sleeve.

4. The quick-change device for engineering machinery as described in claim 1, characterized in that, The adjustment assembly further includes a second rotating component, which includes a second rotating shaft and a second rotating sleeve mounted on the movable hook. The second rotating sleeve is rotatably connected to the second rotating shaft, and the threaded sleeve is mounted on the second rotating sleeve.

5. The quick-change device for engineering machinery as described in claim 2, characterized in that, The first rotating sleeve has a protective component on the side facing the threaded rod. The protective component includes a mounting plate installed on the first rotating sleeve. The upper and lower sides of the mounting plate are respectively provided with shielding plates, which are used to shield the threaded rod.

6. The quick-change device for engineering machinery as described in claim 2, characterized in that, A limiting ring is provided on the threaded rod, and the limiting ring is located on the side of the first rotating sleeve facing the threaded rod.

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