A novel modular and switchable tilter for the construction machinery field

Abstract

The present invention discloses a modular and switchable new tilter for the field of construction machinery, and the device is composed of four parts. The upper connecting frame is provided with a first left pin shaft and a first right pin shaft, and is connected to the docking mechanism at the head of the excavator bucket rod; the middle swing box body of the device is provided with a support seat, the support seat bears the swing hydraulic cylinder, and the lower part of the box body is provided with a docking groove; the lower part of the device, the slewing platform, is provided with a central through hole, and the connecting part of the slewing platform is provided with a stepped plane and docking screw holes; the stepped plane of the slewing platform is connected with the groove of the swing box body in a matching manner; the quick-change connecting device of the device is provided with a circular connecting boss, and connecting screw holes are arranged thereon. The technical solution of the present application can meet different requirements to achieve diversified work of the quick-change device, enable the tool to tilt or rotate at multiple angles, expand the working range, greatly improve the working efficiency, and solve the problems of the single working mode and the complex device structure of the existing quick-change connector.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and in particular to a modular switchable new tilting device for use in the field of engineering machinery. Background Art

[0002] In recent years, with the technological development in the field of construction machinery, various mechanical products have emerged one after another, and the functions of mechanical tools have become more and more abundant. There are many specialized mechanical tools suitable for different occasions. Due to changes in work requirements, in order to realize the switching of multi-functional attachments and carry out efficient agricultural and mechanical operations, quick-change devices (also called quick-change connectors and quick-change joints) came into being. They are currently developing rapidly and are widely used.

[0003] The quick-change device can quickly install and switch various configurations (such as buckets, ripper and hydraulic shears, etc.) on the excavator. It has expanded the scope of use of the excavator to a certain extent, and its functions have become very diverse, which is of great help to improve the progress and efficiency of the entire project. With the further development of technology, the application of quick-change devices is becoming more and more extensive, and the requirements for their functions are becoming higher and higher. In many cases, not only the quick-change device is required to realize the multi-functional switching function of the attachment, but also the quick-change device is required to have a diversified working mode, and to perform tilting and rotating operations to adapt to complex working occasions and different working ranges.

[0004] The current mainstream solution is to add a deflection mechanism to the quick-change device. One method is to achieve the deflection function by extending and retracting the hydraulic cylinder, and the other method is to achieve the deflection function by swinging the swing hydraulic cylinder. Typical representatives include a hydraulic excavator tool deflection quick-change device and a hydraulic excavator disclosed in patent number CN 106049592 B, and a fully automatic quick-change device for emergency rescue engineering equipment disclosed in patent number CN 113123385 B. They can all achieve tilting or rotational movement of the quick-change device, but both have corresponding problems. The former has an external swing hydraulic cylinder and cannot achieve multi-degree-of-freedom rotation of the quick-change device, but can only achieve deflection around one axis. The latter has a complex structure and is difficult to connect internal hydraulic pipelines. Summary of the invention

[0005] The object of the present invention is to meet the switching requirements of the implements belonging to the quick-change device of the excavator, the diversity requirements of the working range, and the complexity requirements of the working mode. At the same time, to solve the problems that the existing quick-change device cannot perform diversified operations with multiple degrees of freedom and has a relatively complex structure, the present invention proposes a new modular and switchable tilter for the construction machinery field, realizing the modular use of the tilting rotator, selecting different modules to work in different application scenarios, enabling the quick-change device and its connected attachments to achieve the tilting and rotating functions with multiple degrees of freedom, improving the mechanical operation efficiency, improving the overall structure, and reducing the manufacturing cost.

[0006] To achieve the above technical objectives and reach the above technical effects, the technical solution of the present invention is as follows:

[0007] A new modular and switchable tilter for the construction machinery field, including an upper connecting frame. The upper connecting frame includes a left support plate, a right support plate, a front connecting plate, and a rear connecting plate. Between the left support plate and the right support plate, there are a first left pin shaft connected to the excavator bucket rod and a second right pin shaft connected to the excavator connecting rod. It is characterized in that it further includes a middle swing box body, a lower slewing platform, and a quick-change device. The middle swing box body includes a housing, a swing hydraulic cylinder, and a support seat. The housing includes an internal lower surface groove, an external lower surface stepped platform, and an external lower surface groove. The swing hydraulic cylinder is placed on the support seat, and the support seat is located at the center position of the internal lower surface groove of the housing. The lower slewing platform includes a housing, a side driving motor, an intermediate slewing device, a connecting boss, and an eccentric connecting device. The eccentric connecting device is connected to the side driving motor, and the side driving motor is fixed to the lower slewing platform by bolts. The intermediate slewing device includes a hollow platform and a connecting through hole. The quick-change device includes a connecting platform and two side clamping devices. The quick-change device is connected to the lower slewing platform by bolts.

[0008] In any of the above technical solutions, further, the left support plate, the right support plate of the upper connecting frame and the front connecting plate, the rear connecting plate are in a mutually perpendicular relationship.

[0009] In any of the above technical solutions, further, the middle swing box body adopts an integral design, and threaded holes connected to the upper connecting frame are symmetrically arranged on both the left and right sides, and the two are connected by bolts. An outward-extending positioning platform is provided on the external lower surface of the middle swing box body, and bolt holes are provided on the positioning platform.

[0010] In any of the above technical solutions, further, the external lower surface groove and the external lower surface stepped platform for modular use are provided on the lower surface of the middle swing box body, and threaded holes for modular connection are provided in the external lower surface groove.

[0011] In any of the above technical solutions, further, connection screw holes are provided on the connection convex platform of the lower slewing device.

[0012] In any of the above technical solutions, further, the lower slewing platform and the middle swing box body are connected in a matching manner. The threaded holes in the external lower surface groove of the middle swing box body correspond to the connection screw holes on the slewing convex platform on the upper surface of the lower slewing platform, and are connected by bolts.

[0013] In any of the above technical solutions, further, threaded holes are provided on the connection platform of the quick-change device, which are matched with the connection through holes on the middle connection device of the lower slewing platform, and are connected by bolts.

[0014] In any of the above technical solutions, further, the device has two usage modes and can be switched arbitrarily. According to its components, the upper connection frame, the middle swing box body, the lower slewing platform and the quick-change device, the four parts can be combined together to form a full-slewing tilter for use, or the three parts of the upper connection frame, the middle swing box body and the quick-change device can be combined for use.

[0015] In any of the above technical solutions, further, the lower slewing platform of the device can be disassembled and assembled for modular use. When the three parts of the upper connection frame, the middle swing box body and the quick-change device are combined for use, the middle swing box body can be directly connected to the quick-change device to form a partial-slewing tilter.

[0016] The beneficial effects of the present invention are as follows:

[0017] In the technical solution of the present invention, considering the installation and use angle of the swing hydraulic cylinder of the middle swing box body, the swing hydraulic cylinder is arranged inside the middle swing box body and is installed on the lower surface of the box body by the way of being integrally placed on the support seat, which improves the working conditions of the swing hydraulic cylinder, reduces the adverse environmental impact on the swing hydraulic cylinder, and at the same time improves the working stability of the swing hydraulic cylinder and increases the service life.

[0018] In the present invention, by arranging grooves inside the lower surface of the middle swing box body, it provides convenience for the installation of the swing hydraulic cylinder. At the same time, threaded holes are arranged on both sides of the edge of the groove to avoid the weak points caused by the threaded holes being too close, improve the overall mechanical properties, and ensure the structural reliability. And grooves and stepped platforms are arranged outside the lower surface of the middle part. On the one hand, the external grooves are convenient for connecting and combining with the lower slewing platform, and on the other hand, the external stepped platforms are convenient for directly connecting and combining with the quick-change device, making the working mode switching more convenient and the working efficiency higher.

[0019] Through modular design of four parts, namely the upper connecting frame, the middle swing box body, the lower slewing platform, and the quick-change device, the functions of each part are separated, different operation modes are switched, multi-degree-of-freedom implement deflection is achieved, the structural complexity of the multi-functional quick-change device is reduced, and at the same time, modular use of the quick-change device is realized. The functions can be replaced according to work requirements, improving the flexibility and diverse selection of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic structural diagram of a modular and switchable new tilter for the construction machinery field according to the present invention;

[0021] Figure 2 FIG. is a schematic structural diagram of the upper connecting frame of the present invention;

[0022] Figure 3 FIG. is a schematic side view of the middle swing box body of the present invention;

[0023] Figure 4 FIG. is a schematic skew-axial view of the middle swing box body of the present invention;

[0024] Figure 5 FIG. is a schematic structural diagram of the lower slewing platform of the present invention;

[0025] Figure 6 FIG. is a schematic structural diagram of the quick-change device of the present invention;

[0026] Figure 7 FIG. is a schematic connection diagram of the middle swing box body and the quick-change device of the present invention;

[0027] Figure 8 FIG. is a schematic connection diagram of the lower slewing platform and the quick-change device of the present invention;

[0028] The meanings of the reference numerals in the drawings are as follows:

[0029] 1. Upper connecting frame; 2. Connecting screw; 3. Middle swing box body; 4. Lower slewing platform; 5. Quick-change device; 6. Allen head connecting bolt; 11. First right pin shaft; 12. Left side support plate; 13. Rear side connecting plate; 14. Connecting screw hole; 15. Front side connecting plate; 16. Right side support plate; 17. First left pin shaft; 31. Housing; 32. Swing hydraulic cylinder; 33. Support seat; 34. Inner lower surface groove; 35. Connecting through hole; 36. Outer lower surface groove; 37. Docking through hole; 38. Outer lower surface stepped platform; 39. Positioning platform; 41. Connecting boss; 42. Upper connecting screw hole; 43. Oil plug; 44. Oil level gauge; 45. Outer shell; 46. Side driving motor; 47. Eccentric connecting device; 48. Central groove; 49. Intermediate slewing device; 51. Connecting platform; 52. Side positioning; 53. Quick-change box body; 54. Two-side clamping device; 55. Lower connecting screw hole. Detailed implementation manners

[0030] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other, and the illustrated embodiments are not intended to limit the present invention.

[0031] As Figure 1 shown, a modular and switchable new tilter for the construction machinery field includes an upper connecting frame 1, a connecting screw 2, a middle swing box body 3, a lower slewing platform 4, a quick-change device 5, and an Allen head connecting bolt 6. Among them, the upper connecting frame 1 is connected to the bucket rod and the connecting rod of the excavator, and the quick-change device 5 is connected to the working attachment (such as a bucket, a grapple, a breaker, etc.). The following is further described with specific drawings:

[0032] As Figure 2 shown, the upper connecting frame 1 includes a left side support plate 12 and a right side support plate 16 for supporting the overall device. The left side support plate 12 and the right side support plate 16 are symmetrically arranged. At the same time, through holes are provided at the same positions of the support plates. The first left pin shaft 17 and the first right pin shaft 11 are installed in the through holes in the middle of the left side support plate 12 and the right side support plate 16. The first left pin shaft 17 and the first right pin shaft are respectively connected to the bucket rod and the connecting rod on the excavator. The front side connecting plate 15 and the rear side connecting plate 13 are arranged in the vertical direction of the left side support plate 12 and the right side support plate 16. The front side connecting plate 15 and the rear side connecting plate 13 are connected to the middle swing box body 3 through the connecting screw 2 via the connecting screw hole 14. It should be noted that the left side support plate 12, the right side support plate 16, the front side connecting plate 15, and the rear side connecting plate 13 are integrally welded and strictly fixed to stably connect the upper connecting frame 1 and the overall device.

[0033] As Figure 3 shown, for the convenience of observing the internal structure, the right side of the middle swing box body 3 is hidden, and its structure is the same as that of the left side. The middle swing box body 3 includes a housing 31, a support base 33 located at the center of the groove 34 on the inner lower surface of the middle swing box body 3, and a swing hydraulic cylinder 32 placed on the support base 33. Preferably, the housing 31 has a triangular-round outer shape structure, and the swing hydraulic cylinder 32 is cylindrical. Through holes for connecting with the upper connecting frame 1 are provided on both the left and right sides of the housing 31. An inner lower surface groove 34 is provided on the lower surface of the middle swing box body 3, and connecting through holes 35 for connecting with the lower slewing platform 4 are provided on both sides of the inner lower surface groove 34.

[0034] As Figure 4 shown, an outer lower surface groove 36 for cooperating with the lower slewing platform 4 and an outer lower surface stepped platform 38 for cooperating and connecting with the quick-change device 5 are provided on the lower surface of the middle swing box body 3. A docking through hole 37 is provided in the outer lower surface groove 36, a positioning platform 39 for positioning and connecting the quick-change device 5 is provided on the outer lower surface stepped platform 38, and connecting through holes corresponding to the lower slewing platform 49 (and the quick-change device 5) are provided on the positioning platform 39.

[0035] As Figure 5 shown, the lower slewing platform 4 includes a connecting boss 41 for cooperating and connecting with the middle swing box body 3, upper connecting screw holes 42 corresponding to the middle swing box body 3 are provided on the connecting boss 41. The lower slewing platform 4 further includes a housing 45 and a central groove 48. The housing 45 is cylindrical as a whole. An eccentric connecting device 47 and a side driving motor 46 are provided on the side of the housing 45. An oil plug 43 and an oil sight glass 44 are provided on the outside of the housing 45. The middle slewing device 49 is surrounded by the center of the central groove 48, and screw holes for connecting with the quick-change device 5 are provided on the middle slewing device 49.

[0036] As Figure 6 shown, the quick-change device 5 includes a quick-change box body 53, a connecting platform 51 corresponding to the connection with the lower slewing platform 4, clamping devices 54 on both sides, and a side positioning 52 for connecting with the middle swing box body 3. Lower connecting screw holes 55 corresponding to the lower slewing platform 4 (and the quick-change device) are provided on the connecting platform 51.

[0037] As Figure 7 shown, the middle swing box body 3 can be directly connected to the quick-change device 5 to realize the swing of the quick-change device of the tilter within a certain range. The outer lower surface stepped platform 38 of the middle swing box body 3 is combined with the connecting platform 51 of the quick-change device 5. The connecting through holes inside the inner lower surface groove 34 of the middle swing box body 3 correspond to the lower connecting screw holes 55 of the quick-change device 5, and bolt connection is adopted.

[0038] As Figure 8 shown, the middle swing box body 3 can be connected to the lower slewing platform 4, and the lower slewing platform 4 is further connected to the quick-change device 5. The screw holes on the intermediate slewing device 49 surrounded by the central groove 48 of the lower slewing platform 4 correspond to the lower connection screw holes 55 on the quick-change device 5 and are connected by bolts.

[0039] The specific working principle of the present invention is described as follows:

[0040] During operation, when only a certain angular range of deflection of the tool is required, the operator can manually disassemble the lower slewing platform 4 with a wrench, and then combine the stepped platform 38 on the outer lower surface of the middle swing box body 3 with the connection platform 51 of the quick-change device 5. Then, the connection through holes on the inner side of the inner lower surface groove 34 of the middle swing box body 3 are aligned with the lower connection screw holes 55 of the quick-change device 5 one by one, and the quick-change device 5 is fixedly connected to the middle swing box body by set bolts. After the connection of the upper connection frame 1 to the excavator bucket rod and connecting rod, the hydraulic pipeline connection of the swing hydraulic cylinder 32 in the middle swing box body 3 is completed, and the swing hydraulic cylinder 32 will drive the middle drive box body 3 and the quick-change device 5 to swing, and the tool connected to the quick-change device 5 can achieve a certain range of deflection work.

[0041] If it is required that the tool realizes a certain angle of deflection and also realizes the rotation of another degree of freedom at the same time, the operator can first connect the lower slewing platform 4 to the middle swing box body 3, cooperate the connecting boss 41 on the lower slewing platform 4 with the outer lower surface groove 36 of the middle swing box body 3, and then align the connection through hole 35 of the inner lower surface groove 34 on the middle swing box body 3 with the upper connection screw hole 42 on the connecting boss 41 of the lower slewing platform 4, and use bolts for fastening connection. Then connect the quick-change device 5 to the lower slewing platform 4, align the lower connection screw hole 55 on the connection platform 51 of the quick-change device 5 with the screw hole on the intermediate slewing device 49 of the lower slewing platform 4, and use bolts for connection. After the above operations are completed, the swing hydraulic cylinder 32 drives the tool of the quick-change device 5 to deflect at a certain angle, and the side drive motor 46 of the lower slewing platform 4 can drive the quick-change device 5 to rotate by another degree of freedom through the intermediate slewing device 49, thereby realizing the multi-degree-of-freedom tilting rotation work of the tool.

[0042] Through the modular use of the middle swing box body and the lower slewing platform, the deflection of the tilter within a certain angle range and the rotation of another angle can be realized simultaneously. At the same time, the tilter can be appropriately selected according to the working conditions. It reduces the overall weight and usage cost in the case of low working intensity and single working mode; it meets the usage requirements and improves the working efficiency in the case of high working intensity and complex working conditions.

[0043] The technical solution of the present invention has been described in detail above in conjunction with the accompanying drawings. The present invention provides a modular and switchable new tilter for the construction machinery field. Through the technical solution of the present invention, the switching requirements of the tools belonging to the quick-change device of the excavator, the diversity requirements of the working range, and the complexity requirements of the working mode are met. At the same time, the problems that the existing quick-change device cannot perform diversified operations with multiple degrees of freedom and has a relatively complex structure are solved, and the modular use of the tilter is realized. Different modules are selected to work in different application scenarios, so that the quick-change device and its connected attachments can realize the tilting and rotating functions with multiple degrees of freedom, improve the mechanical operation efficiency, improve the overall structure, and reduce the manufacturing cost.

[0044] The shapes of the various components in the accompanying drawings are all schematic, and there is no exclusion of a certain difference from their actual shapes. The accompanying drawings are only used to illustrate the principle of the present application and are not intended to limit the present application.

[0045] Specific embodiments are applied in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A modular and switchable new tilter for the field of construction machinery, characterized in that It includes an upper connecting frame (1), and the upper connecting frame (1) includes a left support plate (12), a right support plate (16), a front connecting plate (15), and a rear connecting plate (13). Between the left support plate (12) and the right support plate (16), there are arranged a first left pin shaft (17) connected to the excavator bucket rod and a first right pin shaft (11) connected to the excavator connecting rod. It is characterized in that it further includes a middle swing box body (3), a lower slewing platform (4), and a quick-change device (5). The middle swing box body (3) includes a housing (31), a swing hydraulic cylinder (32), and a support seat (33). The housing (31) is provided with an internal lower surface groove (34), an external lower surface stepped platform (38), and an external lower surface groove (36). The swing hydraulic cylinder (32) is placed on the support seat (33), and the support seat is located at the center position of the internal lower surface groove (34) of the housing (31); The lower slewing platform (4) includes a housing (45), a side driving motor (46), a central groove (48), an intermediate slewing device (49), a connecting boss (41), and an eccentric connecting device (47). The eccentric connecting device (47) is connected to the side driving motor (46), and the side driving motor (46) is fixed to the lower slewing platform (4) by bolts. The quick-change device (5) includes a connecting platform (51) and two side clamping devices (54). The quick-change device (5) is connected to the lower slewing platform (4) by bolts; The housing (31) of the middle swing box body (3) adopts a triangular-round structural design; The lower slewing platform (4) and the middle swing box body (3) adopt a mating connection. Through the threaded holes in the external lower surface groove (36) of the middle swing box body (3) corresponding to the connecting threaded holes on the connecting boss (41) on the upper surface of the lower slewing platform (4), they are connected by bolts; This device has two usage modes and can be switched arbitrarily. According to its components, namely the upper connecting frame (1), the middle swing box body (3), the lower slewing platform (4), and the quick-change device (5), the four parts can be combined together to form a full-rotation tilter for use, or the three parts of the upper connecting frame (1), the middle swing box body (3), and the quick-change device (5) can be combined for use; The lower slewing platform (4) of this device can be disassembled and assembled for modular use. When the three parts of the upper connecting frame (1), the middle swing box body (3), and the quick-change device (5) are combined for use, the middle swing box body (3) can be directly connected to the quick-change device (5) to form a partial-rotation tilter.

2. The modular switchable new tilter for the construction machinery field according to claim 1, characterized in that, The left support plate (12), the right support plate (16) of the upper connecting frame (1) and the front connecting plate (15), the rear connecting plate (13) are perpendicular to each other.

3. A modular and switchable new tilter for the construction machinery field according to claim 1, characterized in that, The middle swing box body (3) adopts an integral design. Threaded holes connected to the upper connecting frame (1) are symmetrically arranged on both the left and right sides, and the two are connected by bolts. An outward-extending positioning platform (39) is provided on the external lower surface of the middle swing box body (3), and bolt holes are provided on the outside of the positioning platform (39).

4. A modular and switchable new tilter for the construction machinery field according to claim 1, characterized in that, The lower surface of the middle swing box body (3) is provided with an external lower surface groove (36) and an external lower surface stepped platform (38) for modular use, and the external lower surface groove (36) is provided with threaded holes for modular connection.

5. A modular and switchable new tilter for the construction machinery field according to claim 1, characterized in that, Connection screw holes are provided on the connection boss (41) of the lower slewing platform (4).

6. The modular and switchable new tilter for the construction machinery field according to claim 1, characterized in that, Threaded holes are provided on the connection platform (51) of the quick-change device (5), which are matched with the connection through holes on the middle slewing device (49) of the lower slewing platform (4), and are connected by bolts.

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