A conversion mechanism

Abstract

The application provides a conversion mechanism connected between a machine tool and a working connecting rod, comprising a bottom plate, a bent plate fixed at the upper end of the bottom plate for clamping with the machine tool, an intermediate hinge plate fixed in the middle of the bottom plate for hinging with a pull rod of the working connecting rod, side hinge plates I and II parallel to each other arranged at both ends of the bottom plate, the lower ends of the side hinge plates I and II hinged with a movable arm of the working connecting rod, and a quick change assembly further arranged on the bottom plate, the quick change assembly comprising a hydraulic oil cylinder, a rotating shaft and two telescopic mechanisms, the rotating shaft being hinged with the hydraulic oil cylinder and the two telescopic mechanisms respectively, the telescopic mechanisms being capable of being inserted into positioning holes of the machine tool through the bottom plate to realize the connection between the conversion mechanism and the machine tool.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery, in particular to a conversion mechanism for connecting a working implement. BACKGROUND

[0002] With the continuous development of loaders, the range of use conditions is continuously expanding, and users require that the same loader can adapt to different conditions, install different implements, complete various operations, and achieve one machine with multiple functions, such as a loader that can install a bucket, a clamp, a sweeper, and a snow remover. However, the existing conversion mechanism requires manual operation to move the positioning pin downward into the bucket positioning hole, which is low in efficiency and accuracy. In order to meet the requirements, a conversion mechanism is designed, which can quickly, effectively, and safely replace the implement. SUMMARY

[0003] In order to solve the technical problems existing in the prior art, the present application provides a conversion mechanism connected between an implement and a working link, comprising a bottom plate, a bent plate for clamping with the implement is fixed on the upper end of the bottom plate, an intermediate hinge plate for hinging with the pull rod of the working link is fixed in the middle of the bottom plate, side hinge plates I and II parallel to each other are arranged at both ends of the bottom plate, and the lower ends of the side hinge plates I and II are hinged with the boom of the working link; a quick change assembly is further arranged on the bottom plate, the quick change assembly comprises a hydraulic oil cylinder, a rotating shaft, and two telescopic mechanisms, the rotating shaft is hinged with the hydraulic oil cylinder and the two telescopic mechanisms respectively, the telescopic mechanism can be inserted into the positioning hole of the implement through the bottom plate to realize the connection between the conversion mechanism and the implement.

[0004] Further, the two ends of the rotating shaft are rotatably connected with two side hinge plates I respectively, and the rotating shaft is provided with a first rotating block hinged with the hydraulic oil cylinder and a second rotating block hinged with the telescopic mechanism.

[0005] Further, the first rotating block and the second rotating block are circumferentially fixedly connected with the rotating shaft.

[0006] Further, the included angle between the first rotating block and the second rotating block is 45° to 90°.

[0007] Further, the telescopic mechanism comprises a connecting shaft, a positioning pin, and a positioning pin sleeve, the connecting shaft is hinged with the second rotating block, the positioning pin is hinged with the connecting shaft, and the positioning pin sleeve is fixed on the bottom plate through an enclosing plate and is in sliding fit with the positioning pin.

[0008] Further, an elastic element is sleeved on the connecting shaft, and two ends of the elastic element abut against the second rotating block and the connecting shaft respectively, wherein the contact surface of the second rotating block abutting against the elastic element is a gradual curved surface.

[0009] Further, a limiting block is fixed on the side hinge plate I, and the bottom of the limiting block extends downward to realize positioning of the machine tool, so that the positioning pin can be aligned with the positioning hole of the machine tool.

[0010] Further, coaxial through holes are arranged on the intermediate hinge plate, the side hinge plate I and the side hinge plate II, the rotating shaft passes through the intermediate hinge plate and the side hinge plate II, and is rotatably connected with the side hinge plate I through the supporting sleeve.

[0011] Further, coaxial hinge holes are arranged on the lower parts of the side hinge plate I and the side hinge plate II, and the movable arm of the working connecting rod is rotatably connected with the side hinge plate I and the side hinge plate II through flanges.

[0012] Further, the two side hinge plates II are fixedly connected through a circular pipe.

[0013] Compared with the prior art, the application has the following beneficial effects:

[0014] 1. The conversion mechanism of the application is clamped through the bent plate and the upper end of the machine tool, and is connected or separated from the lower end of the machine tool through the telescopic mechanism controlled by the hydraulic oil cylinder, thereby shortening the time required for machine tool replacement and significantly improving the work efficiency, thereby providing a powerful guarantee for efficient and continuous operation. At the same time, the multifunctionality and operation adaptability of the operation machine are enhanced, so that it can quickly respond to various complex operation scenes and machine tool requirements.

[0015] 2. The conversion mechanism of the embodiment synchronously drives the positioning pins of the two telescopic mechanisms through the hydraulic oil cylinder. The positioning pins can simultaneously and synchronously complete the extension and retraction actions, thereby realizing high consistency of the positioning pin action and ensuring the accuracy and stability during machine tool replacement. At the same time, the structure of the conversion mechanism is simplified, and the manufacturing cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of installation of the conversion mechanism of the application;

[0017] Figure 2 It is a schematic diagram of structure of the conversion mechanism of the application;

[0018] Figure 3 It is a schematic diagram of structure of the conversion mechanism of the application;

[0019] Figure 4 It is a schematic diagram of structure of the telescopic mechanism of the application;

[0020] In the figure: 1, bucket; 2, conversion mechanism; 3, pull rod; 4, rocker arm; 5, swing arm; 6, bottom plate; 7, bent plate; 8, side hinged plate I; 9, side hinged plate II; 10, first rotating block; 11, hydraulic cylinder; 12, intermediate hinged plate; 13, rotating shaft; 14, support sleeve; 15, second rotating block; 16, connecting shaft; 17, elastic element; 18, positioning pin; 19, positioning pin sleeve; 20, limiting block; 21, sealing plate; 22, flange; 23, round pipe; 24, hydraulic oil pipe. DETAILED DESCRIPTION

[0021] For the purpose of promoting the understanding of the present application, the technical solutions in the embodiments of the present application will be described in a clear and complete manner in combination with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without any creative work fall within the protection scope of the present application.

[0022] The present application is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Each aspect thus defined can be combined with any other aspect or aspects, unless explicitly stated otherwise. In particular, any feature that is considered to be preferred or advantageous can be combined with any other feature or features that are considered to be preferred or advantageous.

[0023] In the description of the present application, it should be understood that the terms "inner", "outer", "upper", "lower", "left" and "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application, and do not indicate or imply that the device referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0024] Reference Figures 1-2As shown, the present application discloses a conversion mechanism connected between the machine tool and the working connecting rod, which comprises a bottom plate 6 and a bent plate 7 welded and fixed on the upper end of the bottom plate 6. The left and right ends of the bottom plate 6 are both welded with side hinge plates I 8 and side hinge plates II 9, and the upper ends of the side hinge plates I 8 and the side hinge plates II 9 extend to the bent plate 7 and are fixed with the bent plate 7 by welding. The side hinge plates I 8 and the side hinge plates II 9 are parallel to each other and perpendicular to the bottom plate 6, and the bottoms of the two side hinge plates II 9 are welded and fixed by a round pipe 23. The middle hinge plate 12 for hinging with the pull rod 3 of the working connecting rod is fixed in the middle of the bottom plate 6, the upper part of the middle hinge plate 12 is welded on the bent plate 7, the middle part is welded on the bottom plate 6, and the bottom of the middle hinge plate 12 is welded on the round pipe 23. This connection mode improves the structural strength and stability of the conversion mechanism, and can ensure that the conversion mechanism remains stable when bearing heavy load and complex working conditions. The round pipe 23 provides additional support for the side hinge plates II 9, further improving the stability of the entire conversion mechanism.

[0025] In some embodiments, the middle hinge plate 12 is outwardly convex in the middle to form a hinge part for hinging with the pull rod 3 of the working connecting rod. Two coaxial hinge holes are provided on the hinge part, which cooperate with the pin shaft to realize the hinging with the pull rod 3 of the working connecting rod. The lower parts of the side hinge plates I 8 and the side hinge plates II 9 are both provided with coaxial hinge holes, and the movable arm 5 of the working connecting rod is rotatably connected with the side hinge plates I 8 and the side hinge plates II 9 through the flanges 22.

[0026] In some embodiments, the bottom plate 6 is also provided with a quick-change assembly, which comprises a hydraulic oil cylinder 11, a rotating shaft 13 and two telescopic mechanisms. The rotating shaft 13 is hinged with the hydraulic oil cylinder 11 and the two telescopic mechanisms respectively, and the telescopic movement of the hydraulic oil cylinder 11 drives the two telescopic mechanisms to move up and down through the rotating shaft 13. When connected, the bent plate 7 at the top end of the conversion mechanism is inserted into the limiting plate slot of the machine tool to realize clamping with the machine tool, the hydraulic oil cylinder 11 drives the telescopic mechanism to move downward, and the telescopic mechanism is inserted into the positioning hole of the machine tool through the bottom plate 6, so as to realize the connection between the conversion mechanism and the machine tool.

[0027] The conversion mechanism of the present embodiment is clamped with the upper end of the machine tool, and is connected or separated with the lower end of the machine tool by controlling the telescopic mechanism through the hydraulic oil cylinder 11, which shortens the time required for changing the machine tool and significantly improves the work efficiency, providing a strong guarantee for efficient and continuous operation. At the same time, the multifunctionality and operation adaptability of the conversion mechanism are enhanced, so that it can quickly respond to various complex operation scenes and machine tool requirements.

[0028] In some embodiments, the upper parts of the middle hinge plate 12, the side hinge plate I 8 and the side hinge plate II 9 are provided with coaxial through holes, the rotating shaft 13 passes through the middle hinge plate 12 and the side hinge plate II 9, and the two ends of the rotating shaft 13 are rotatably connected with the two side hinge plates I 8 through the support sleeves 14 respectively.

[0029] In some embodiments, the rotating shaft 13 is provided with a first rotating block 10 hinged to the hydraulic cylinder 11 and two second rotating blocks 15 hinged to the telescopic mechanism. The first rotating block 10 and the second rotating block 15 are circumferentially fixedly connected to the rotating shaft 13 so that the first rotating block 10 and the second rotating block 15 can rotate coaxially with the rotating shaft 13.

[0030] The connection method between the first rotating block 10 and the second rotating block 15 and the rotating shaft 13 can be varied. For example, the rotating shaft 13 may have a threaded hole perpendicular to its axis, and the bottom of the first rotating block 10 and the second rotating block 15 may have through holes corresponding to the threaded holes. The first rotating block 10 and the second rotating block 15 are fitted onto the rotating shaft 13, and then bolts are screwed into the threaded holes of the rotating shaft 13 through the through holes, thus achieving a circumferentially fixed connection between the first rotating block 10 and the second rotating block 15 and the rotating shaft 13. The included angle between the first rotating block 10 and the second rotating block 15 can be selected according to actual needs. Preferably, the included angle between the first rotating block 10 and the second rotating block 15 is 45° to 90°.

[0031] In some embodiments, reference Figures 3-4 As shown, the telescopic mechanism is located between side hinge plate I8 and side hinge plate II9, and includes a connecting shaft 16, a positioning pin 18, and a positioning pin sleeve 19. The top end of the connecting shaft 16 is hinged to the second rotating block 15 via a pin, and the lower end of the connecting shaft 16 is hinged to the positioning pin 18 via a pin. The positioning pin sleeve 19 is sleeved on the outside of the positioning pin 18 and slides in cooperation with the positioning pin 18. The positioning pin sleeve 19 is fixed to the base plate 6 by a sealing plate 21, and the lower end of the positioning pin sleeve 19 extends downward through the base plate 6. In this embodiment, the conversion mechanism synchronously drives the positioning pins 18 of the two telescopic mechanisms through a hydraulic cylinder 11. This enables them to complete the extension and retraction actions simultaneously and synchronously, achieving a high degree of consistency in the movement of the positioning pins 18, and ensuring accuracy and stability during the tool changing process. At the same time, it simplifies the structure of the conversion mechanism and saves manufacturing costs.

[0032] In some embodiments, an elastic element 17 is sleeved on the connecting shaft 16. Preferably, the elastic element 17 is a spring. The two ends of the elastic element 17 abut against the second rotating block 15 and the connecting shaft 16, respectively, wherein the contact surface between the second rotating block 15 and the elastic element 17 is a progressively curved surface. When the piston rod of the hydraulic cylinder 11 retracts, the first rotating block 10 drives the rotating shaft 13 to rotate counterclockwise. The second rotating block 15 drives the positioning pin 18 to extend downward through the connecting shaft 16. At the same time, the progressively curved surface of the second rotating block 15 compresses the elastic element 17. The elastic element 17 acts on the second rotating block 15 with a rebound force, providing a restoring force for the positioning pin 18, ensuring that the positioning pin 18 can remain in a retracted state when no external force is applied.

[0033] In some embodiments, a limiting block 20 is fixed on the side hinge plate I8, the bottom of the limiting block 20 extends downward to realize the positioning of the implement, so that the positioning pin 18 can be aligned with the positioning hole of the implement. The accuracy and efficiency of the connection are improved.

[0034] The process of replacing the bucket: the driver manipulates the swing arm 5, the rocker arm 4 and the pull rod 3 of the working linkage system to drive the conversion mechanism 2 to move, inserts the bent plate 7 of the conversion mechanism 2 into the limiting plate slot of the bucket 1, and then manipulates the working linkage system to make the back plate of the bucket 1 abut against the bottom plate 6 of the conversion mechanism 2, and under the action of the limiting block 20, the positioning pin 18 is aligned with the positioning hole of the bucket 1. By controlling the valve to control the action of the hydraulic cylinder 11, the hydraulic cylinder 11 drives the rotating shaft 13 to rotate through the first rotating block 10, the rotating shaft 13 drives the second rotating block 15 to rotate, thereby driving the connecting shaft 16 to rotate to make the positioning pin 18 move up and down along the positioning pin sleeve 19, and when the positioning pin 18 moves to the lower limit, it is inserted into the positioning hole of the bucket 1, and the process of quickly replacing the bucket is completed.

[0035] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A conversion mechanism for coupling between an implement and a working link, characterised in that, The utility model provides a quick change device for machine tool, including bottom plate (6), the bottom plate (6) upper end is fixed with the bending plate (7) for and machine tool joint, the bottom plate (6) middle is fixed with the middle articulated plate (12) for and the articulated rod (3) of work connecting rod hinge, the bottom plate (6) both ends are equipped with the side articulated plate I (8) and side articulated plate II (9) parallel to each other, the side articulated plate I (8) with side articulated plate II (9) lower end and swing arm (5) of work connecting rod articulate, the bottom plate (6) is equipped with quick change assembly still, quick change assembly includes hydraulic cylinder (11), rotating shaft (13) and two telescopic mechanisms, rotating shaft (13) is respectively with hydraulic cylinder (11) and two telescopic mechanisms articulate, telescopic mechanism can pass through bottom plate (6) and is inserted into the positioning hole of machine tool, realizes conversion mechanism with machine tool connection, Two ends of rotating shaft (13) are rotatable connected with two side articulated plate I (8) respectively, rotating shaft (13) is equipped with first rotary block (10) with hydraulic cylinder (11) articulate and second rotary block (15) with telescopic mechanism articulate, First rotary block (10) and second rotary block (15) are circumferentially fixedly connected with rotating shaft (13), Telescopic mechanism includes connecting shaft (16), positioning pin (18) and positioning pin sleeve (19), connecting shaft (16) is articulated with second rotary block (15), positioning pin (18) is articulated with connecting shaft (16), positioning pin sleeve (19) is fixed on bottom plate (6) through sealing plate (21) and is slidably fitted with positioning pin (18).

2. The conversion mechanism of claim 1, wherein, The included angle of the first rotary block (10) and the second rotary block (15) is 45° to 90°.

3. The conversion mechanism of claim 1, wherein, A resilient element (17) is sleeved on the connecting shaft (16), and two ends of the resilient element (17) abut against the second rotary block (15) and the connecting shaft (16) respectively, wherein the contact surface of the second rotary block (15) and the resilient element (17) is a gradual curved surface.

4. The conversion mechanism of claim 1, wherein, A limiting block (20) is fixed on the side articulated plate I (8), and the bottom of the limiting block (20) extends downward to realize positioning of the machine tool, so that the positioning pin (18) can be aligned with the positioning hole of the machine tool.

5. The conversion mechanism of claim 1, wherein, Coaxial through holes are arranged on the upper portions of the middle articulated plate (12), the side articulated plate I (8) and the side articulated plate II (9), the rotating shaft (13) passes through the middle articulated plate (12) and the side articulated plate II (9), and is rotatably connected with the side articulated plate I (8) through a support sleeve (14).

6. The conversion mechanism of claim 1, wherein, Coaxial articulated holes are arranged on the lower portions of the side articulated plate I (8) and the side articulated plate II (9), and the swing arm (5) of the work connecting rod is rotatably connected with the side articulated plate I (8) and the side articulated plate II (9) through a flange (22).

7. The conversion mechanism of claim 6, wherein, A circular tube (23) is fixedly connected between the two side articulated plate II (9).

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