Hydraulic drive type universal quick connection platform

Abstract

The invention belongs to the technical field of excavator accessories, and particularly relates to a hydraulic drive type universal quick connection platform which comprises a connecting frame, a swing mechanism, a rotating mechanism and a quick connection mechanism, the connecting frame is connected with a middle shell of the rotating mechanism through the swing mechanism, and the swing mechanism is driven by a hydraulic rod to achieve platform swing. The rotating mechanism comprises an upper shell, a middle shell, a lower shell and a driving assembly, the driving assembly drives the hollow shaft to rotate through a worm and gear pair so as to drive the quick connecting mechanism and the accessory to rotate, an oil way arranged in the fixing shaft is in butt joint with an annular groove of the hollow shaft, a built-in hydraulic channel is formed, hydraulic oil is transmitted to the quick connecting mechanism in a non-interference mode, and the quick connecting mechanism is driven to rotate. Limiting of an external hydraulic hose on movement is eliminated, full-circumferential continuous rotation and large-angle swinging are achieved, the platform integration degree is high, the structure is compact, the worm and gear pair provides the self-locking capacity, stable operation and position locking are ensured, and the operation flexibility, safety and reliability are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of excavator attachment technology, specifically relating to a hydraulically driven universal quick-connect platform. Background Technology

[0002] Hydraulic quick-change connectors, as key attachment interfaces in the construction machinery field, are widely used in excavators, loaders, and other equipment to enable rapid switching between different working attachments, significantly improving equipment utilization and operational efficiency. As construction machinery develops towards intelligence and multi-functionality, the market demand for quick-change connectors is no longer limited to simple mechanical connections, but also seeks integrated hydraulic power transmission capabilities and a wider range of flexible swing and rotation during operation to adapt to complex working environments.

[0003] However, existing quick-change connectors with integrated hydraulic functions typically require external hydraulic hoses to connect the hydraulic distribution valve of the equipment body to the attachment when supplying hydraulic oil to thumb clamps or hydraulic power attachments. These exposed hoses physically interfere with and restrict the range of motion of the connector during swinging and rotating movements. Furthermore, to prevent the hoses from breaking or excessively bending during movement, excessively long hose allowances are often required as a buffer. These lengthy hoses are prone to tangling or colliding with surrounding objects during equipment operation, posing a risk of damage, affecting operational safety and continuity, and reducing the overall reliability and aesthetics of the machine.

[0004] Therefore, it is essential to develop a hydraulically driven universal quick-connect platform that can fundamentally eliminate the limitations imposed by external hydraulic lines on the platform's swing and rotation movements, while also allowing the installation of various attachments. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a hydraulically driven universal quick-connect platform to solve the problems of the prior art relying on external hydraulic pipeline connection, which limits its swing and rotation range, and the reserved pipeline margin is prone to entanglement or scratching during operation.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A hydraulically driven universal quick-connect platform includes: a connecting frame, a swing mechanism, a rotating mechanism, and a quick-connect mechanism; The connecting frame is equipped with a connecting shaft and a pin. The rotating mechanism includes an upper housing, a middle housing, a lower housing, a drive assembly, and a first distribution valve. A fixed shaft is fixedly mounted on the upper housing. The middle housing is hinged to a connecting frame via a pin. The drive assembly is installed inside the middle housing and is slidably engaged with the fixed shaft. A hollow shaft is mounted on the lower housing, with its upper end connected to the drive assembly and its inner wall slidably engaged with the fixed shaft. A connecting plate is mounted on the lower housing and is fixedly connected to the outer wall of the hollow shaft. The first distribution valve is fixedly connected above the upper housing. The connecting frame is connected to the middle housing via a swing mechanism, and the swing mechanism is connected to the first distribution valve via a pipe; The quick-connect mechanism is fixedly installed below the connecting plate.

[0007] Furthermore, the swing mechanism includes a first hydraulic rod and a second hydraulic rod, the upper ends of which are respectively hinged to both sides of the connecting frame, and the lower ends of which are respectively hinged to the middle housing.

[0008] Furthermore, the fixed shaft is provided with an oil inlet and an oil passage. The oil inlet is located at the upper end of the fixed shaft, and the oil passage is connected to the oil inlet. The oil inlet is connected to the first distribution valve through a pipe.

[0009] Furthermore, the hollow shaft is provided with an annular groove and an oil outlet. The inner wall of the hollow shaft is provided with an annular groove, the position of which corresponds to the oil passage. The oil outlet is provided on the outer wall of the hollow shaft and is connected to the annular groove. The oil outlet is connected to the quick-connect mechanism through a pipe.

[0010] Furthermore, the drive assembly includes a worm gear, a worm, and a hydraulic motor. The worm gear and the worm are disposed in the middle housing. The worm gear meshes with the worm, the worm is connected to the hydraulic motor, the worm gear slides with a fixed shaft, and the worm gear is fixedly connected to the upper end of a hollow shaft. The hydraulic motor is connected to a first distribution valve through a pipe.

[0011] Furthermore, the quick-connect mechanism includes a support plate, a second distribution valve, an attachment quick-connect mechanism, and a quick connector. The support plate is fixedly connected to the connecting plate, the second distribution valve is fixedly connected to the upper end face of the support plate, the attachment quick-connect mechanism is installed on the lower end face of the support plate, the attachment quick-connect mechanism is connected to the second distribution valve through a pipe, and the support plate has connecting parts on both sides, with the quick connector installed on the connecting parts.

[0012] Furthermore, the connecting portion bends upwards.

[0013] Furthermore, the quick-connect mechanism also includes a thumb clip bracket, which is fixedly mounted on the upper surface of the support plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention discloses a hydraulically driven universal quick-connect platform. The hydraulic oil forms a sealed channel through the oil circuit in the fixed shaft, the annular groove on the hollow shaft and the oil outlet, which can continuously and stably supply oil to the attachment during rotation and swing. This enables the quick-connect platform to achieve interference-free continuous rotation and large-angle swing, expands the working range and flexibility of the attachment, and avoids safety hazards such as oil leakage and attachment loss of control caused by pipeline entanglement, scraping or excessive bending. It improves the reliability and safety of the equipment under complex working conditions.

[0015] 2. The hydraulically driven universal quick-connect platform disclosed in this invention uses a hydraulic rod to drive the swing and a hydraulic motor in conjunction with a worm gear pair to drive the rotation, all centrally controlled by the same distribution valve. This not only simplifies the overall layout and facilitates installation and maintenance, but its worm gear mechanism also has a self-locking characteristic, which can ensure that the attachment is stably locked in any rotation position, with large output torque and smooth operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a top view of the present invention; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA; Figure 4 Exploded view of the rotating mechanism; Figure 5 This is a schematic diagram of the quick-connect mechanism; The reference numerals used in the attached figures are as follows: 1. Connecting frame; 11. Connecting shaft; 12. Pin; 21. First hydraulic rod; 22. Second hydraulic rod; 3. Rotating mechanism; 31. Upper housing; 311. Fixed shaft; 312. Oil inlet; 313. Oil passage; 32. Middle housing; 33. Lower housing; 331. Connecting plate; 332. Hollow shaft; 333. Annular groove; 334. Oil outlet; 341. Worm gear; 342. Worm; 343. Hydraulic motor; 35. First distribution valve; 4. Quick-connect mechanism; 41. Support plate; 42. Connecting part; 43. Second distribution valve; 44. Thumb clamp bracket; 45. Attachment quick-connect mechanism; 46. Quick connector. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. They should not be construed as limiting the specific protection scope of this application.

[0019] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0020] Please see Figures 1 to 5 As shown, a hydraulically driven universal quick-connect platform includes: a connecting frame 1 for connecting a hydraulic arm and supporting the swinging of a rotating mechanism 3 and a quick-connect mechanism 4; a swinging mechanism for driving the swinging of the rotating mechanism 3 and the quick-connect mechanism 4; a rotating mechanism 3 for driving the rotation of the quick-connect mechanism 4; and a quick-connect mechanism 4 for quickly installing and removing attachments.

[0021] The connecting frame 1 is provided with a connecting shaft 11 and a pin 12. That is, the connecting frame 1 is connected to the hydraulic arm through the connecting shaft 11.

[0022] The rotating mechanism 3 includes an upper housing 31, a middle housing 32, a lower housing 33, a drive assembly, and a first distribution valve 35.

[0023] A fixed shaft 311 is fixedly installed on the upper housing 31. Specifically, the fixed shaft 311 is provided with an oil inlet 312 and an oil passage 313. The oil inlet 312 is located at the upper end of the fixed shaft 311, and the oil passage 313 is connected to the oil inlet 312. The oil inlet 312 is connected to the first distribution valve 35 through a pipe.

[0024] The middle housing 32 is hinged to the connecting frame 1 via a pin 12. The drive assembly is installed inside the middle housing 32 and is slidably engaged with the fixed shaft 311. Specifically, the drive assembly includes a worm gear 341, a worm 342, and a hydraulic motor 343. The worm gear 341 and worm 342 are disposed in the middle housing 32. The worm gear 341 meshes with the worm 342, the worm 342 is connected to the hydraulic motor 343, the worm gear 341 is slidably engaged with the fixed shaft 311, and the worm gear 341 is fixedly connected to the upper end of the hollow shaft 332. The hydraulic motor 343 is connected to the first distribution valve 35 via a pipe. It can be understood that the first distribution valve 35 controls the hydraulic motor 343 to drive the worm 342 to rotate, the worm 342 drives the meshing worm gear 341 to rotate within the middle housing 32, and the rotation of the worm gear 341 causes the lower housing 33 connected to it and the quick-connect mechanism 4 installed below the lower housing 33 to rotate together.

[0025] A hollow shaft 332 is provided on the lower housing 33. The upper end of the hollow shaft 332 is connected to the drive assembly, and the inner wall of the hollow shaft 332 is slidably engaged with the fixed shaft 311. Specifically, the hollow shaft 332 is provided with an annular groove 333 and an oil outlet 334. The annular groove 333 is located on the inner wall of the hollow shaft 332, and its position corresponds to the oil passage 313. The oil outlet 334 is located on the outer wall of the hollow shaft 332 and is connected to the annular groove 333. The oil outlet 334 is connected to the quick-connect mechanism 4 through a pipe. It can be understood that the first distribution valve 35 can be connected to the second distribution valve 43 of the quick-connect mechanism 4 through the oil inlet 312, oil passage 313, annular groove 333, oil outlet 334 and pipeline. The first distribution valve 35 can control the power attachment installed on the attachment quick-connect mechanism 45 through the second distribution valve 43, without the need to lay an external hydraulic hose to connect the first distribution valve 35 and the power attachment.

[0026] A connecting plate 331 is provided on the lower housing 33, and the connecting plate 331 is fixedly connected to the outer wall of the hollow shaft 332. The first distribution valve 35 is fixedly connected above the upper housing 31.

[0027] The connecting frame 1 is connected to the middle housing 32 via a swing mechanism. Specifically, the swing mechanism includes a first hydraulic rod 21 and a second hydraulic rod 22. The upper ends of the first hydraulic rod 21 and the second hydraulic rod 22 are respectively hinged to both sides of the connecting frame 1, and the lower ends of the first hydraulic rod 21 and the second hydraulic rod 22 are respectively hinged to the middle housing 32. The swing mechanism is connected to a first distribution valve 35 via a pipe. Specifically, the first hydraulic rod 21 and the second hydraulic rod 22 are respectively connected to the first distribution valve 35 via pipes, meaning that the first distribution valve 35 can independently control either the first hydraulic rod 21 or the second hydraulic rod 22. This can be understood as the first distribution valve 35 controlling the extension and retraction of the first hydraulic rod 21 and the second hydraulic rod 22, driving the middle housing 32 to rotate around the pivot pin 12, thereby realizing the swing of the rotating mechanism 3 and the quick-connect mechanism 4.

[0028] The quick-connect mechanism 4 is fixedly disposed below the connecting plate 331. Specifically, the quick-connect mechanism 4 includes a support plate 41, a second distribution valve 43, an attachment quick-connect mechanism 45, and a quick connector 46.

[0029] The support plate 41 is fixedly connected to the connecting plate 331, and the second distribution valve 43 is fixedly connected to the upper end face of the support plate 41. The quick-connect mechanism 45 is installed on the lower end face of the support plate 41, and the quick-connect mechanism 45 is connected to the second distribution valve 43 through a pipe. That is, the second distribution valve 43 can control the quick-connect mechanism 45 to realize the quick installation and disassembly of the attachment. It should be noted that the quick-connect mechanism 45 is prior art.

[0030] The support plate 41 has connecting portions 42 on both sides. Preferably, the connecting portions 42 are bent upwards, and the quick connector 46 is mounted on the connecting portions 42. It should be noted that, please refer to the appendix... Figure 1 As shown, in this embodiment, quick connector 46 is a quick-connect male connector, and a matching quick-connect female connector needs to be installed on the power attachment. The upwardly inclined connecting part 42 causes the interface end of quick connector 46 to tilt downward, which allows for quick connection between the power attachment and the second distribution valve 43 after the power attachment is installed on the attachment quick-connect mechanism 45.

[0031] It should be noted that the quick-connect mechanism 4 also includes a thumb clamp bracket 44, which is fixedly mounted on the upper surface of the support plate 41. This means the universal quick-connect platform can selectively install the thumb clamp module. It should be noted that when installing the thumb clamp, the quick connector 46 on one side of the thumb clamp bracket 44 must be removed to prevent material from damaging the quick connector 46 when the thumb clamps the material. It should also be noted that the connecting part 42 is located in the middle of the side of the support plate 41 and does not affect the closing of the thumb clamp or the clamping of material. Furthermore, it prevents some material from entering the gap between the support plate 41 and the thumb clamp module when clamping material, thus affecting the normal operation of the equipment.

[0032] The working principle of this invention is as follows: Rotation: The first distribution valve 35 controls the hydraulic motor 343 to drive the worm gear 342 to rotate in both directions. The worm gear 342 drives the worm wheel 341, which meshes with it, to rotate in the middle housing 32 in either the forward or reverse direction. The rotation of the worm wheel 341 causes the lower housing 33 connected to it, as well as the quick-connect mechanism 4 and attachments installed below the lower housing 33, to rotate in either the forward or reverse direction.

[0033] Oscillation: The first distribution valve 35 controls the extension and retraction of the first hydraulic rod 21 and the second hydraulic rod 22 respectively, driving the middle housing 32 to rotate around the pin shaft 12, thereby realizing the oscillation of the rotating mechanism 3, the quick-connect mechanism 4 and the attachment.

[0034] Non-powered attachment installation and removal: The hydraulic arm drives the universal quick-connect platform to move to the attachment, and the second distribution valve 43 controls the attachment quick-connect mechanism 45 to realize the quick installation and removal of non-powered attachments.

[0035] Installation, disassembly and operation of power attachments: It should be noted that a quick-connect female connector that mates with quick connector 46 needs to be installed on the power attachment.

[0036] The hydraulic arm drives the universal quick-connect platform to move to the attachment location. The second distribution valve 43 controls the attachment quick-connect mechanism 45, enabling rapid installation and removal of the power attachment. It should be noted that after installation, the quick connector 46 connects to the quick connector female, achieving rapid connection between the power attachment and the second distribution valve 43. The second distribution valve 43 then controls the power attachment to perform its operations.

[0037] The above descriptions are merely embodiments of the present invention. Commonly known structures and characteristics of the solutions are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A hydraulically driven universal quick-connect platform, characterized in that, include: Connecting frame (1), swing mechanism, rotating mechanism (3) and quick-connect mechanism (4); The connecting frame (1) is provided with a connecting shaft (11) and a pin (12). The rotating mechanism (3) includes an upper housing (31), a middle housing (32), a lower housing (33), a drive assembly, and a first distribution valve (35). A fixed shaft (311) is fixedly installed on the upper housing (31). The middle housing (32) is hinged to the connecting frame (1) via a pin (12). The drive assembly is installed inside the middle housing (32) and is slidably engaged with the fixed shaft (311). A hollow shaft (332) is installed on the lower housing (33). The upper end of the hollow shaft (332) is connected to the drive assembly. The inner wall of the hollow shaft (332) is slidably engaged with the fixed shaft (311). A connecting plate (331) is installed on the lower housing (33). The connecting plate (331) is fixedly connected to the outer wall of the hollow shaft (332). The first distribution valve (35) is fixedly connected above the upper housing (31). The connecting frame (1) is connected to the middle housing (32) through a swing mechanism, and the swing mechanism is connected to the first distribution valve (35) through a pipe; The quick-connect mechanism (4) is fixedly installed below the connecting plate (331).

2. The hydraulically driven universal quick-connect platform according to claim 1, characterized in that: The swing mechanism includes a first hydraulic rod (21) and a second hydraulic rod (22). The upper ends of the first hydraulic rod (21) and the second hydraulic rod (22) are respectively hinged to the two sides of the connecting frame (1), and the lower ends of the first hydraulic rod (21) and the second hydraulic rod (22) are respectively hinged to the middle shell (32).

3. The hydraulically driven universal quick-connect platform according to claim 1, characterized in that: The fixed shaft (311) is provided with an oil inlet (312) and an oil passage (313). The oil inlet (312) is located at the upper end of the fixed shaft (311), and the oil passage (313) is connected to the oil inlet (312). The oil inlet (312) is connected to the first distribution valve (35) through a pipe.

4. The hydraulically driven universal quick-connect platform according to claim 3, characterized in that: The hollow shaft (332) is provided with an annular groove (333) and an oil outlet (334). The inner wall of the hollow shaft (332) is provided with an annular groove (333). The position of the annular groove (333) corresponds to the oil passage (313). The oil outlet (334) is provided on the outer wall of the hollow shaft (332). The oil outlet (334) is connected to the annular groove (333). The oil outlet (334) is connected to the quick-connect mechanism (4) through a pipe.

5. The hydraulically driven universal quick-connect platform according to claim 1, characterized in that: The drive assembly includes a worm gear (341), a worm (342), and a hydraulic motor (343). The worm gear (341) and the worm (342) are disposed in the middle housing (32). The worm gear (341) meshes with the worm (342). The worm (342) is connected to the hydraulic motor (343). The worm gear (341) is slidably engaged with the fixed shaft (311). The worm gear (341) is fixedly connected to the upper end of the hollow shaft (332). The hydraulic motor (343) is connected to the first distribution valve (35) through a pipe.

6. The hydraulically driven universal quick-connect platform according to claim 1, characterized in that: The quick-connect mechanism (4) includes a support plate (41), a second distribution valve (43), a quick-connect attachment mechanism (45), and a quick connector (46). The support plate (41) is fixedly connected to the connecting plate (331). The second distribution valve (43) is fixedly connected to the upper end face of the support plate (41). The quick-connect attachment mechanism (45) is installed on the lower end face of the support plate (41). The quick-connect attachment mechanism (45) is connected to the second distribution valve (43) through a pipe. Connecting parts (42) are provided on both sides of the support plate (41). The quick connector (46) is installed on the connecting parts (42).

7. A hydraulically driven universal quick-connect platform according to claim 6, characterized in that: The connecting part (42) bends upward.

8. A hydraulically driven universal quick-connect platform according to claim 7, characterized in that: The quick-connect mechanism (4) also includes a thumb clip bracket (44), which is fixedly mounted on the upper surface of the support plate (41).

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