CN214574221U - Mechanical accessory quick-change structure suitable for small excavator and excavator - Google Patents
Mechanical accessory quick-change structure suitable for small excavator and excavator Download PDFInfo
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- CN214574221U CN214574221U CN202022945108.1U CN202022945108U CN214574221U CN 214574221 U CN214574221 U CN 214574221U CN 202022945108 U CN202022945108 U CN 202022945108U CN 214574221 U CN214574221 U CN 214574221U
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Abstract
The utility model discloses a mechanical accessory quick-change structure suitable for a mini excavator and the excavator, wherein the mechanical accessory quick-change structure comprises a quick-change connector and a quick-change lug plate which are clamped and matched; the quick-change connector is connected with a connecting rod and a bucket rod of the excavator; the quick-change ear plate is connected with the accessory; the utility model overcomes the shortcoming that traditional change method exists and other quick change device's is not enough, can realize the quick replacement of accessory convenient and fast, and safe and reliable more.
Description
Technical Field
The utility model relates to an excavator makes technical field, especially relates to a mechanical type accessory quick change structure suitable for mini-excavator.
Background
In the field construction process of the excavator, the auxiliary machines are often replaced according to actual working conditions. The traditional method for manually replacing the accessory is high in labor intensity and long in dismounting and mounting time, and the accessory is easily damaged to a certain extent on the relevant connecting part of the working device when being frequently dismounted. The current situation greatly promotes the research and development of the quick-change device for the excavator accessories, and the quick-change devices for switching the excavator accessories appearing in the market at present can be roughly divided into two types, namely a mechanical type and a hydraulic type.
To the mechanical type quick change, most products all realize with the help of lead screw or bolt that disassembly, installation and fastening to the accessory need special instrument such as spanner to come the auxiliary operation when switching the accessory on the one hand, and efficiency is lower, and on the other hand after long-time high strength work, the lead screw or bolt condition such as fracture or screw thread deformation, damage easily appear failing, can bring certain potential safety hazard.
For hydraulic quick change, on one hand, related functions are realized by modifying pipelines and a hydraulic system of the excavator, the manufacturing cost is increased, the hydraulic quick change excavator is not suitable for mainly driving a series of high-cost-performance miniature excavator products, on the other hand, due to the addition of the quick change hydraulic system, an operating system of the whole excavator is more complex, and the risk of miss caused by misoperation of an oil way switch by a driver exists.
Disclosure of Invention
The utility model provides a mechanical type accessory quick change structure suitable for small-size excavator, it has overcome the shortcoming that traditional change method exists and other quick change device's is not enough, can realize the quick replacement of accessory convenient and fast ground, and safe and reliable more.
The utility model adopts the technical proposal that:
a quick change structure of mechanical accessories suitable for a mini excavator comprises a quick change connector and a quick change lug plate which are in clamping fit; the quick-change connector is connected with a connecting rod and a bucket rod of the excavator; the quick-change ear plate is connected with an accessory; the quick-change connector comprises a first connecting rod assembly, a second connecting rod assembly, a third connecting rod assembly, a fourth connecting rod assembly, a first stop cover, a second stop cover, a first pin shaft, a second pin shaft and a safety pin shaft; the first connecting rod assembly and the second connecting rod assembly are hinged with the connecting rods through a first pin shaft, and the first pin shaft is connected with a first stop cover to realize axial limiting; the third connecting rod assembly and the fourth connecting rod assembly are hinged with the connecting rods through second pin shafts, and the second pin shafts are connected with second stop covers to realize axial limiting; the safety pin shaft penetrates through coaxial through holes formed by the first connecting rod assembly, the second connecting rod assembly, the third connecting rod assembly, the fourth connecting rod assembly and the quick-change lug plate, and the limiting effect is achieved.
Furthermore, the quick-change connector also comprises two limiting block assemblies and two hinge pin shafts; the first connecting rod assembly, the third connecting rod assembly and the limiting block assembly are hinged through a hinge pin; the second connecting rod assembly, the fourth connecting rod assembly and one limiting block assembly are hinged through a hinge pin shaft.
Further, the limiting block assembly comprises a first side plate, a second side plate and a bent plate; the first side plate and the second side plate are parallel and coaxial in through hole, and the first side plate and the second side plate are respectively welded with the bent plate.
Further, a preset gap is kept between the first connecting rod assembly and the third connecting rod assembly through a plurality of adjusting shims; and a preset gap is kept between the second connecting rod assembly and the fourth connecting rod assembly through a plurality of adjusting shims.
Further, the first link assembly comprises a first shaft sleeve, a first plate and a first retainer ring; the first shaft sleeve penetrates through the large through hole of the first plate and the first check ring and then is welded.
Further, the second connecting rod assembly comprises a second shaft sleeve, a second plate and a second retainer ring; and the second shaft sleeve penetrates through the large through hole of the second plate and the second check ring and then is welded with the second plate, the second shaft sleeve and the second check ring.
Further, the third connecting rod assembly comprises a third shaft sleeve and a third plate; and the third shaft sleeve penetrates through the large through hole of the third plate and then is welded with the large through hole of the third plate.
Further, the fourth connecting rod assembly comprises a fourth shaft sleeve and a fourth plate; and the fourth shaft sleeve is welded with the fourth plate after penetrating through the large through hole of the fourth plate.
Further, the quick-change ear plate comprises a left ear plate and a right ear plate; the left ear plate and the right ear plate are symmetrical in shape and fixedly connected with an accessory in a welding mode; the openings on the left ear plate and the right ear plate are used for being matched with the first connecting rod assembly, the second connecting rod assembly, the third connecting rod assembly and the fourth connecting rod assembly in a clamping mode.
An excavator comprises a connecting rod, a bucket rod, an attachment and the mechanical attachment quick-change structure suitable for the small excavator; the quick-change connector is connected with the connecting rod and the bucket rod, and the quick-change lug plate is connected with the accessory.
The utility model discloses beneficial effect:
1. compared with the traditional manual accessory dismounting mode, the utility model is quicker and more convenient, and has less damage to the relevant connection part of the working device;
2. compared with a hydraulic quick-change device, the utility model has simple structure and low manufacturing cost, and is more suitable for the main series products of the mini excavator with high cost performance;
3. different from the common mechanical quick-change device which realizes the disassembly, installation and fastening of accessories by means of a lead screw or a bolt, the utility model utilizes the matching of the safety pin shaft and the lock pin to achieve the functions of limiting and locking, does not need to use an external tool, is more convenient and faster to disassemble, can avoid the conditions that the accessories are accidentally dropped and are not easy to disassemble due to failure fracture or thread deformation and damage of the lead screw and the bolt, and is safer and more reliable to use;
4. different from general excavator quick change device, the utility model discloses realize the lug connection of accessory and dipper, connecting rod through certain mechanical structure in essence, do not need solitary quick change device to set up between accessory and equipment, consequently can not additionally increase the distance between anterior hinge point of dipper and the accessory to the stress of load power, can not additionally increase the load moment of digging the machine during operation promptly, the practicality is stronger.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
fig. 1 is a schematic structural diagram of the present invention at a viewing angle.
FIG. 2 is a schematic view showing the connection relationship between the present invention and the connecting rod, the bucket rod and the accessory.
Fig. 3 is a schematic view of the quick-change coupler of fig. 1 from a single perspective.
Fig. 4 is a schematic view of the quick-change coupler of fig. 1 from another perspective.
Fig. 5 is a schematic structural diagram of the quick-change ear plate in fig. 1.
Fig. 6 is a schematic view of the first link assembly of fig. 3.
Fig. 7 is a schematic structural view of the second link assembly of fig. 3.
Fig. 8 is a schematic structural view of the third link assembly of fig. 3.
Fig. 9 is a schematic structural view of the fourth link assembly of fig. 3.
Fig. 10 is a schematic structural diagram of the stop block assembly in fig. 4.
Fig. 11 is a schematic view of the quick-change coupler without the shear pin and locking pin and before the quick-change lug is mated with the quick-change lug.
Fig. 12 is a schematic view of the construction of the parts of the quick-change coupler without the shear pin and locking pin during mating with the quick-change lug.
Fig. 13 is a schematic view of the quick-change coupler without the safety pin and the lock pin in cooperation with the quick-change lug, with the structure of each part not inserted.
Fig. 14 is a schematic view of the quick-change coupler mated with the quick-change lug and after the safety pin and locking pin have been inserted.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and fig. 2, the quick-change structure of mechanical accessory for mini-excavator in this embodiment includes a quick-change coupler 1 and a quick-change lug plate 2; the quick-change connector 1 is connected with a connecting rod 3 and a bucket rod 4 of the excavator; the quick-change ear plate 2 is connected with an accessory 5.
As shown in fig. 3 and 4, the quick-change coupler 1 includes a first link assembly 1-1, a second link assembly 1-2, a third link assembly 1-3, a fourth link assembly 1-4, two limit block assemblies 1-5, two hinge pins 1-6, a plurality of adjusting washers 1-7, two split pins 1-8, a first pin 1-9, a second pin 1-10, a first stop cover 1-11, a second stop cover 1-12, a plurality of bolts 1-13, a safety pin 1-14, and a lock pin 1-15.
The concrete connection mode is as follows: the first connecting rod assembly 1-1 and the second connecting rod assembly 1-2 are hinged with the connecting rod 3 through a first pin shaft 1-9; the first stop cover 1-11 is fixedly connected with the first pin shaft 1-9 through a plurality of bolts 1-13 and plays an axial limiting role on parts penetrated by the first pin shaft 1-9; the third connecting rod assembly 1-3 and the fourth connecting rod assembly 1-4 are hinged with the bucket rod 4 through a second pin shaft 1-10; the second stop cover 1-12 is fixedly connected with the second pin shaft 1-10 through a plurality of bolts 1-13, and plays an axial limiting role on parts penetrated by the second pin shaft 1-10; the first connecting rod assembly 1-1, the third connecting rod assembly 1-3 and the limiting block assembly 1-5 are hinged through a hinge pin 1-6, and the limiting block assembly 1-5 limits the relative application range between the first connecting rod assembly 1-1 and the third connecting rod assembly 1-3, namely, the rotating hinge point of the first connecting rod assembly 1-1 and the third connecting rod assembly 1-3 is always kept away from the accessory installation side of a connecting line between the front hinge point of the connecting rod 3 and the front hinge point of the bucket rod 4; a certain gap is kept between the first connecting rod assembly 1-1 and the third connecting rod assembly 1-3 through a plurality of adjusting gaskets 1-7, so that the first connecting rod assembly and the third connecting rod assembly are not rubbed with each other in relative movement, and the radial force of the first connecting rod assembly and the third connecting rod assembly on the safety pin shaft 1-14 is prevented from being too concentrated; the second connecting rod assembly 1-2, the fourth connecting rod assembly 1-4 and the limiting block assembly 1-5 are hinged through a hinge pin 1-6, and the limiting block assembly 1-5 limits the relative application range between the second connecting rod assembly 1-2 and the fourth connecting rod assembly 1-4, namely, the rotating hinge point of the second connecting rod assembly 1-2 and the limiting block assembly 1-5 is always positioned on the side, far away from the accessory installation side, of the connecting line between the front hinge point of the connecting rod 3 and the front hinge point of the bucket rod 4; a certain gap is kept between the second connecting rod assembly 1-2 and the fourth connecting rod assembly 1-4 through a plurality of adjusting gaskets 1-7, so that the two connecting rod assemblies cannot rub against each other in relative motion, and the radial force of the two connecting rod assemblies on the safety pin shafts 1-14 is prevented from being too concentrated; the cotter pin 1-8 is inserted into the through hole of the hinge pin 1-6, and the tail part is pulled open, so as to play an axial limiting role for the parts penetrated by the hinge pin 1-6; the safety pin shaft 1-14 penetrates through the coaxial through holes formed by the first connecting rod assembly 1-1, the second connecting rod assembly 1-2, the third connecting rod assembly 1-3, the fourth connecting rod assembly 1-4 and the quick-change lug plate 2 after being matched with each other, so that the limiting effect on the five connecting rods is achieved; the lock pin 1-15 is inserted into the through hole on the safety pin 1-14 to prevent the safety pin 1-14 from falling off along the axial movement.
As shown in fig. 5, the quick-change ear plate 2 comprises a left ear plate 2-1 and a right ear plate 2-2; the left lug plate 2-1 and the right lug plate 2-2 are symmetrical in shape, the left lug plate and the right lug plate are fixedly connected with the accessory body 5 through welding or other mechanical connection modes, and openings in the left lug plate and the right lug plate are used for being in clamping fit with the first connecting rod assembly 1-1, the second connecting rod assembly 1-2, the third connecting rod assembly 1-3 and the fourth connecting rod assembly 1-4.
Alternatively, as shown in FIG. 6, the first link assembly 1-1 includes a first boss 1-1-1, a first plate 1-1-2, and a first retainer ring 1-1-3; the first shaft sleeve 1-1-1 penetrates through the large through hole of the first plate 1-1-2 and the first check ring 1-1-3, and the first shaft sleeve, the large through hole and the first check ring are welded.
As shown in fig. 7, the second link assembly 1-2 includes a second bushing 1-2-1, a second plate 1-2-2, and a second ring 1-2-3; the second shaft sleeve 1-2-1 penetrates through the large through hole of the second plate 1-2-2 and the second check ring 1-2-3, and the three are welded.
As shown in FIG. 8, the third connecting-rod assembly 1-3 includes a third boss 1-3-1, a third plate 1-3-2; the third shaft sleeve 1-3-1 penetrates through the large through hole of the third plate 1-3-2, and the third plate are welded.
As shown in FIG. 9, the fourth connecting rod assembly 1-4 includes a fourth boss 1-4-1, a fourth plate 1-4-2; the fourth shaft sleeve 1-4-1 penetrates through the large through hole of the fourth plate 1-4-2, and the fourth shaft sleeve and the large through hole are welded.
As shown in FIG. 10, the limiting block assembly 1-5 comprises a first side plate 1-5-1, a second side plate 1-5-2 and a bent plate 1-5-3; the first side plate 1-5-1 and the second side plate 1-5-2 are parallel and coaxial with the through hole and are respectively welded with the bent plate 1-5-3.
As shown in fig. 11 to 14, the specific application principle of the present invention is as follows:
when the attachment with the quick-change lug plate 2 is installed, an operator firstly detaches the safety pin shaft 1-14 and the lock pin 1-15 of the quick-change connector 1, then operates an excavator arm to clamp the third shaft sleeve 1-3-1 and the fourth shaft sleeve 1-4-1 which are coaxial with the front hinge point of the bucket rod 4 with one end opening of the quick-change lug plate 2, the first shaft sleeve 1-1-1 and the second shaft sleeve 1-2-1 which are coaxial with the front hinge point of the connecting rod 3 are clamped with the other end opening of the quick-change lug plate 2 by adjusting the extending amount of the bucket oil cylinder, then the safety pin shaft 1-14 passes through the coaxial through holes formed by the first connecting rod component 1-1, the second connecting rod component 1-2, the third connecting rod component 1-3, the fourth connecting rod component 1-4 and the quick-change lug plate 2, and finally inserts the lock pin 1-15 into the through hole on the safety pin shaft 1-14, thereby completing the installation of the accessory.
When the utility model discloses when dismantling the accessory that has quick change otic placode 2, according to the reverse operation of above-mentioned mounting method, pull down safe round pin axle 1-14 and lockpin 1-15 earlier, control the excavator arm again and make quick change joint 1 break away from with quick change otic placode 2, can accomplish the dismantlement of accessory.
In conclusion, compared with the traditional manual accessory dismounting mode, the utility model is quicker and more convenient, and has less damage to the relevant connection part of the working device; compared with a hydraulic quick-change device, the utility model has simple structure and low manufacturing cost, and is more suitable for the main series products of the mini excavator with high cost performance; different from the common mechanical quick-change device which realizes the disassembly, installation and fastening of accessories by means of a lead screw or a bolt, the utility model utilizes the matching of the safety pin shaft and the lock pin to achieve the functions of limiting and locking, does not need to use an external tool, is more convenient and faster to disassemble, can avoid the conditions that the accessories are accidentally dropped and are not easy to disassemble due to failure fracture or thread deformation and damage of the lead screw and the bolt, and is safer and more reliable to use; different from general excavator quick change device, the utility model discloses realize the lug connection of accessory and dipper, connecting rod through certain mechanical structure in essence, do not need solitary quick change device to set up between accessory and equipment, consequently can not additionally increase the distance between anterior hinge point of dipper and the accessory to the stress of load power, can not additionally increase the load moment of digging the machine during operation promptly, the practicality is stronger.
The utility model also discloses an excavator, which comprises a connecting rod, a bucket rod, an accessory and the mechanical accessory quick-change structure suitable for the small excavator; the quick-change connector is connected with the connecting rod and the bucket rod, and the quick-change lug plate is connected with the accessory.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are also meant to be within the scope of the invention and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make modifications or changes to equivalent embodiments by utilizing the above technical contents without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical matters of the present invention are within the scope of the present invention.
Claims (10)
1. The utility model provides a mechanical type accessory quick change structure suitable for miniexcavator which characterized in that:
the quick-change connector comprises a quick-change connector and a quick-change lug plate which are in clamping fit;
the quick-change connector is connected with a connecting rod and a bucket rod of the excavator;
the quick-change ear plate is connected with an accessory;
the quick-change connector comprises a first connecting rod assembly, a second connecting rod assembly, a third connecting rod assembly, a fourth connecting rod assembly, a first stop cover, a second stop cover, a first pin shaft, a second pin shaft and a safety pin shaft;
the first connecting rod assembly and the second connecting rod assembly are hinged with the connecting rods through a first pin shaft, and the first pin shaft is connected with a first stop cover to realize axial limiting;
the third connecting rod assembly and the fourth connecting rod assembly are hinged with the connecting rods through second pin shafts, and the second pin shafts are connected with second stop covers to realize axial limiting;
the safety pin shaft penetrates through coaxial through holes formed by the first connecting rod assembly, the second connecting rod assembly, the third connecting rod assembly, the fourth connecting rod assembly and the quick-change lug plate, and the limiting effect is achieved.
2. The quick-change structure of mechanical accessories for mini-excavators according to claim 1, characterized in that:
the quick-change connector also comprises two limiting block assemblies and two hinge pin shafts;
the first connecting rod assembly, the third connecting rod assembly and the limiting block assembly are hinged through a hinge pin;
the second connecting rod assembly, the fourth connecting rod assembly and one limiting block assembly are hinged through a hinge pin shaft.
3. The quick-change structure of mechanical accessories for mini-excavators according to claim 2, characterized in that:
the limiting block assembly comprises a first side plate, a second side plate and a bent plate;
the first side plate and the second side plate are parallel and coaxial in through hole, and the first side plate and the second side plate are respectively welded with the bent plate.
4. The quick-change structure of mechanical accessories for mini-excavators according to claim 1, characterized in that:
a preset gap is kept between the first connecting rod assembly and the third connecting rod assembly through a plurality of adjusting gaskets;
and a preset gap is kept between the second connecting rod assembly and the fourth connecting rod assembly through a plurality of adjusting shims.
5. The quick-change structure of mechanical accessories for mini-excavators according to claim 1, characterized in that:
the first connecting rod assembly comprises a first shaft sleeve, a first plate and a first retainer ring;
the first shaft sleeve penetrates through the large through hole of the first plate and the first check ring and then is welded.
6. The quick-change structure of mechanical accessories for mini-excavators according to claim 1, characterized in that:
the second connecting rod assembly comprises a second shaft sleeve, a second plate and a second retainer ring;
and the second shaft sleeve penetrates through the large through hole of the second plate and the second check ring and then is welded with the second plate, the second shaft sleeve and the second check ring.
7. The quick-change structure of mechanical accessories for mini-excavators according to claim 1, characterized in that:
the third connecting rod assembly comprises a third shaft sleeve and a third plate;
and the third shaft sleeve penetrates through the large through hole of the third plate and then is welded with the large through hole of the third plate.
8. The quick-change structure of mechanical accessories for mini-excavators according to claim 1, characterized in that:
the fourth connecting rod assembly comprises a fourth shaft sleeve and a fourth plate;
and the fourth shaft sleeve is welded with the fourth plate after penetrating through the large through hole of the fourth plate.
9. The quick-change structure of mechanical accessories for mini-excavators according to claim 1, characterized in that:
the quick-change ear plate comprises a left ear plate and a right ear plate;
the left ear plate and the right ear plate are symmetrical in shape and fixedly connected with an accessory in a welding mode;
the openings on the left ear plate and the right ear plate are used for being matched with the first connecting rod assembly, the second connecting rod assembly, the third connecting rod assembly and the fourth connecting rod assembly in a clamping mode.
10. The utility model provides an excavator, includes connecting rod, dipper and accessory, its characterized in that:
the mechanical accessory quick-change structure applicable to the mini-excavator in any one of claims 1 to 9;
the quick-change connector is connected with the connecting rod and the bucket rod, and the quick-change lug plate is connected with the accessory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022945108.1U CN214574221U (en) | 2020-12-10 | 2020-12-10 | Mechanical accessory quick-change structure suitable for small excavator and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022945108.1U CN214574221U (en) | 2020-12-10 | 2020-12-10 | Mechanical accessory quick-change structure suitable for small excavator and excavator |
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| Publication Number | Publication Date |
|---|---|
| CN214574221U true CN214574221U (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022945108.1U Active CN214574221U (en) | 2020-12-10 | 2020-12-10 | Mechanical accessory quick-change structure suitable for small excavator and excavator |
Country Status (1)
| Country | Link |
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| CN (1) | CN214574221U (en) |
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2020
- 2020-12-10 CN CN202022945108.1U patent/CN214574221U/en active Active
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