CN219118257U

CN219118257U - Bulldozer blade structure of mini-excavator

Info

Publication number: CN219118257U
Application number: CN202223218370.1U
Authority: CN
Inventors: 田辉; 陆祖东; 沙肃君
Original assignee: Ningbo Yinzhou Chuangxin Construction Machinery Co ltd
Current assignee: Ningbo Yinzhou Chuangxin Construction Machinery Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-06-02
Anticipated expiration: 2032-11-30

Abstract

The utility model provides a micro excavator bulldozer blade structure which comprises a mounting beam, a main bulldozer blade and two auxiliary bulldozer blades, wherein the main bulldozer blade is connected to the front side of the mounting beam, two sides of the mounting beam are respectively connected with supporting seats, the rear sides of the two auxiliary bulldozer blades are respectively connected with fixing frames, and the two fixing frames are respectively and detachably connected to the corresponding supporting seats, so that the two auxiliary bulldozer blades can be unfolded forward to lean against two ends of the main bulldozer blade or can be stored backward to the rear sides of two ends of the main bulldozer blade; an adjusting component for adjusting a connecting gap between the fixing frame and the supporting seat is arranged between the fixing frame and the supporting seat. The utility model provides a bulldozer blade structure of a mini-excavator, which can expand the width of a bulldozer blade according to application scenes, and the auxiliary bulldozer blade of an expanded part can be flexibly stored, so that the application range is increased, and the bulldozer efficiency is ensured.

Description

Bulldozer blade structure of mini-excavator

Technical Field

The utility model relates to the technical field of mini-excavators, in particular to a bulldozer blade structure of a mini-excavator.

Background

Along with the change of application scenes, the small-sized excavator integrating the characteristics of flexibility, multiple functions, wide application range and the like is increasingly used, and the push shovel mechanism is taken as an indispensable mechanism of the small-sized excavator, so that the use performance of the small-sized excavator is related, and the quality of the performance of the bulldozer has a vital effect on the small-sized excavator.

However, the conventional blade of the mini-excavator has a great defect in the use process, namely the blade width is fixed, the blade width cannot be changed according to actual use conditions, and further the blade width is adjusted, so that the blade area is limited, and further the blade efficiency is affected.

Disclosure of Invention

The utility model solves the problem of overcoming at least one defect in the prior art, and provides the micro excavator bulldozer blade structure which can expand the width of the bulldozer blade according to application scenes, and the auxiliary bulldozer blade of the expanded part can be flexibly stored, so that the application range is increased, and the bulldozer efficiency is ensured.

The utility model provides a micro-excavator bulldozer blade structure which comprises a mounting beam, a main bulldozer blade and two auxiliary bulldozer blades, wherein the main bulldozer blade is connected to the front side of the mounting beam, two sides of the mounting beam are respectively connected with supporting seats, the rear sides of the two auxiliary bulldozer blades are respectively connected with fixing frames, and the two fixing frames are respectively and detachably connected to the corresponding supporting seats, so that the two auxiliary bulldozer blades can be unfolded forward to be propped against two ends of the main bulldozer blade or can be stored in the rear sides of two ends of the main bulldozer blade in a reverse direction; an adjusting component for adjusting a connecting gap between the fixing frame and the supporting seat is arranged between the fixing frame and the supporting seat.

Compared with the prior art, the bulldozer blade structure of the mini-excavator has the following advantages:

in the bulldozer structure, two auxiliary bulldozers are added on two sides of the original main bulldozer, and the two auxiliary bulldozers are detachably connected with the main bulldozer; when the bulldozing range needs to be widened, the two auxiliary bulldozing shovels are unfolded to be propped against the two ends of the bulldozing shovels; when the auxiliary bulldozer blade is not needed, the auxiliary bulldozer blade can be reversely stored to the rear side of the bulldozer blade, so that the auxiliary bulldozer blade is very convenient; on the other hand, because the main bulldozer blade and the auxiliary bulldozer blade are connected by adopting a mechanically matched structure, certain abrasion exists on the connecting structure and the main bulldozer blade and the auxiliary bulldozer blade in the using process, as the main bulldozer blade and the auxiliary bulldozer blade are easy to loosen along with the use time, the stability of the auxiliary bulldozer blade is reduced, and the adjusting component for adjusting the connecting gap between the main bulldozer blade and the auxiliary bulldozer blade is arranged between the fixing frame and the supporting seat, so that the problem is effectively solved, and the stability of the connecting structure of two parts is ensured.

As an improvement, the adjusting component comprises a fixed block and an adjusting bolt, wherein the fixed block is connected to the upper end face and/or the lower end face of the fixed frame, and the adjusting bolt is spirally arranged on the fixed block in a penetrating manner along the direction parallel to the main bulldozer blade; and a positioning stop block is arranged on the upper end face and/or the lower end face of the supporting seat, and one end, far away from the fixed block, of the adjusting bolt is abutted against the positioning stop block. Among the above-mentioned improvement structure, realize adjusting the regulation of the connection clearance between main bulldozer blade and the vice bulldozer blade through adjusting bolt and the cooperation of location dog, simple structure, it is convenient to adjust.

The improved structure is characterized in that the fixed block is provided with a communication hole, and at least one side wall of the fixed block is connected with a connecting nut for the screw connection of the adjusting bolt; the connecting nut and the communicating hole are coaxially arranged, and the inner diameter of the communicating hole is larger than the outer diameter of the adjusting bolt. Among the above-mentioned improvement structure, through directly setting up coupling nut on the fixed block, avoid processing screw hole at the fixed block, processing is convenient, with low costs.

Further improved, each supporting seat comprises two first connecting plates which are respectively connected to the upper side surface and the lower side surface of the two ends of the mounting beam, and the two first connecting plates are respectively provided with a first through hole; each fixing frame comprises two second connecting plates, and the two second connecting plates are respectively positioned on the upper side and the lower side of the two first connecting plates; the two second connecting plates are provided with second through holes; the second connecting plate positioned above is provided with a positioning backup plate, when the auxiliary bulldozer blade is connected to the mounting beam in an unfolding or storage state, the front side or the rear side of the first connecting plate positioned above is propped against the positioning backup plate, and positioning pins are arranged in the first through hole and the second through hole in a penetrating manner.

Still further, a hollow supporting tube is arranged between the two first connecting plates of each supporting seat, an inner hole of the supporting tube is communicated with the first through hole, and the positioning pin shaft can penetrate through the inner hole of the supporting tube. In the improved structure, the structural strength between the two first connecting plates is effectively improved due to the arrangement of the supporting tube, the inner hole of the supporting tube is directly used as a plugging channel of the positioning lock pin, a central hole is not required to be machined, and the installation is convenient.

And the rear side of the mounting beam is connected with two connecting square pipes which are perpendicular to the main bulldozer blade and are parallel to each other, and one ends of the two connecting square pipes, which are far away from the mounting beam, are respectively connected with the main body of the excavator. In the improved structure, the two square tube structures are used as the supporting arms of the bulldozer blade, so that the structure strength is high.

And the rear side of the mounting beam is positioned between the two connecting square pipes, and one end, far away from the mounting beam, of the driving cylinder assembly is connected with the main body of the excavator and is used for driving the telescopic action of the bulldozer blade. In the improved structure, the driving cylinder assembly for driving the telescopic action of the bulldozer blade is connected between the two connecting square pipes at the middle part of the mounting beam, so that the bulldozer blade is convenient to mount and stable and reliable in driving force.

Drawings

FIG. 1 is a schematic view of a construction of a mini-excavator blade of the present utility model;

FIG. 2 is a schematic view of the attachment of the auxiliary blade to the main blade in accordance with the present utility model;

FIG. 3 is a top plan view of a side blade of the mini-excavator blade structure of FIG. 1 on the receiving side;

FIG. 4 is a top plan view of the sub-blade on either side of the mini-excavator blade structure of FIG. 1;

reference numerals illustrate:

1. mounting a beam; 2. a main blade; 3. a secondary blade; 4. a support base; 4.1, a first connecting plate; 5. a fixing frame; 5.1, a second connecting plate; 6. a fixed block; 7. an adjusting bolt; 8. positioning a stop block; 9. a coupling nut; 10. positioning a backup plate; 11. positioning pin shafts; 12. a support tube; 13. connecting square tubes; 14. a drive cylinder assembly; 15. an inclined plane; 16. and (5) a pull ring.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper end", "lower end", "front side", "rear side", "above", etc. are directions or positional relationships based on the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and defined otherwise, the term "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, 3 and 4, the utility model provides a micro-excavator bulldozer blade structure, which comprises a mounting beam 1, a main bulldozer blade 2 and two auxiliary bulldozer blades 3, wherein the main bulldozer blade 2 is connected to the front side of the mounting beam 1, two sides of the mounting beam 1 are respectively connected with supporting seats 4, the rear sides of the two auxiliary bulldozer blades 3 are respectively connected with fixing frames 5, and the two fixing frames 5 are respectively and detachably connected to the corresponding supporting seats 4, so that the two auxiliary bulldozer blades 3 can be unfolded forward to be abutted against two ends of the main bulldozer blade 2 or can be reversely stored in the rear sides of two ends of the main bulldozer blade 2, and the two states can be switched according to actual use conditions, namely, the main bulldozer blade 2 can be used independently or can be matched with at least one auxiliary bulldozer blade 3, and the width of the main bulldozer blade can be adjusted in a self-defined manner. In addition, in order to facilitate the reverse storage of the auxiliary dozer blade 3 at the two sides of the installation beam 1, the rear sides at the two ends of the auxiliary dozer blade are respectively provided with a corresponding inclined surface 15, so that the effect of avoiding the air is realized.

On the other hand, since the main blade 2 and the sub blade 3 are connected by a mechanically engaged structure, there is some wear on the connection structure and the main blade 2 and the sub blade 3 during use, and as the use time goes on, the stability of the sub blade 3 is lowered due to the easy loosening between the main blade 2 and the sub blade 3, and therefore, in this embodiment, an adjusting unit for adjusting the connection gap between the main blade 2 and the sub blade 3 is provided between the fixing frame 5 and the support base 4.

Specifically, in this embodiment, the adjusting assembly includes a fixed block 6 and an adjusting bolt 7, the fixed block 6 is connected to the upper end face and/or the lower end face of the fixed frame 5, and the adjusting bolt 7 is threaded through the fixed block 6 along a direction parallel to the main blade 2; the upper end face and/or the lower end face of the supporting seat 4 are/is provided with a positioning stop block 8, and one end of the adjusting bolt 7, which is far away from the fixed block 6, is abutted against the positioning stop block 8; after each connection is completed, the connection gap between the main blade 2 and the auxiliary blade 3 is tightened by screwing the adjusting bolt 7, namely, a pre-tightening effect is achieved, and the gap between the connection structures is compensated by the pre-tightening effect of the adjusting bolt 7, so that the shaking problem between the main blade 2 and the auxiliary blade 3 is solved.

More specifically, in the structure, the fixed block 6 is provided with a communication hole, and at least one side wall of the fixed block 6 is connected with a connecting nut 9 for the screw connection of the adjusting bolt 7; the coupling nut 9 is coaxially disposed with the communication hole, and the inner diameter of the communication hole is larger than the outer diameter of the adjusting bolt 7. As shown in fig. 2, a connecting nut 9 is welded on one side of the fixed block 6 close to the positioning stop block 8, the adjusting bolt 7 is in threaded fit in the connecting nut 9, the structure omits the processing of a threaded hole on the fixed block 6, the processing difficulty is reduced, and the conventional connecting nut 9 matched with the adjusting bolt 7 is directly welded, so that the structure is very convenient.

In another aspect, as shown in fig. 2, each supporting seat 4 includes two first connecting plates respectively connected to the upper and lower sides of the two ends of the mounting beam 1, and the two first connecting plates are respectively provided with a first through hole; each fixing frame 5 comprises two second connecting plates 5.1, and the two second connecting plates 5.1 are respectively positioned at the upper side and the lower side of the two first connecting plates; the two second connecting plates 5.1 are provided with second through holes; a positioning backup plate 10 is arranged on the second connecting plate 5.1 positioned above, and when the auxiliary bulldozer blade 3 is connected to the mounting beam 1 in a unfolded or stored state, the front side or the rear side of the first connecting plate positioned above is propped against the positioning backup plate 10 to realize anti-rotation limit; positioning pin shafts 11 are arranged in the first through holes and the second through holes in a penetrating mode, and the fixing frame 5 is connected with the supporting seat 4 through the corresponding positioning pin shafts 11; in the above structure, under the limiting action of the positioning backup plate 10, the fixing frame 5 can be matched with the supporting seat 4 only at two positions, and the first through hole and the second through hole can be coaxial for the positioning pin 11 to be inserted, namely, the two positions respectively correspond to the state that the auxiliary bulldozer blade 3 is unfolded to the working state or the direction is stored at the rear side of the main bulldozer blade 2. When the position state of the auxiliary bulldozer blade 3 needs to be switched, the positioning pin shaft 11 is only required to be pulled out, the auxiliary bulldozer blade 3 is taken down, then the auxiliary bulldozer blade is continuously assembled in the direction of the switch, and then the positioning pin shaft 11 is assembled. In addition, in order to facilitate the insertion and extraction of the positioning pin 11, a pull ring 16 is provided at the upper end thereof.

In the above structure, in order to ensure the stability and the limit of the auxiliary dozer blade 3, besides the positioning backup plate 10 is disposed on the second connecting plate 5.1 above, the corresponding positioning backup plate 10 (not shown in the figure) is disposed on the lower end surface of the second connecting plate 5.1 below, and the position of the corresponding first connecting plate is limited by the upper and lower positioning backup plates 10, so that the auxiliary dozer blade is more stable and reliable. In this structure, in order to reduce the number of parts, the positioning backup plates 10 on the second connecting plates 5.1 above and below and at both ends of the mounting beam 1 are all provided as an integral structure with the corresponding positioning stopper 8, i.e., a strip-shaped steel plate is selected, and one end of the strip-shaped steel plate is bent.

In addition, in order to improve the structural strength between the two first connection plates, in this embodiment, a hollow support tube 12 is disposed between the two first connection plates of each support seat 4, and an inner hole of the support tube 12 is communicated with the first through hole, and the positioning pin 11 can pass through the inner hole of the support tube 12.

On the other hand, two connecting square pipes 13 perpendicular to the main blade 2 and parallel to each other are connected to the rear side of the mounting beam 1, and one ends of the two connecting square pipes 13 away from the mounting beam 1 are connected to the excavator main body, respectively. The two square tube structures are adopted as the supporting arms of the bulldozer blade, so that the structural strength is effectively improved. And be connected with the actuating cylinder subassembly 14 between two connection square pipes 13 in the rear side of mounting beam 1, the actuating cylinder subassembly 14 is kept away from the one end of mounting beam 1 and is connected with the excavator main part for the flexible action of drive dozer blade, simple to operate, the drive power is stable, reliable.

Although the present disclosure is disclosed above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the disclosure.

Claims

1. A mini-excavator bulldozer blade structure which is characterized in that: the bulldozer comprises a mounting beam (1), a main bulldozer blade (2) and two auxiliary bulldozer blades (3), wherein the main bulldozer blade (2) is connected to the front side of the mounting beam (1), supporting seats (4) are respectively connected to two sides of the mounting beam (1), fixing frames (5) are respectively connected to the rear sides of the two auxiliary bulldozer blades (3), the two fixing frames (5) are respectively and detachably connected to the corresponding supporting seats (4), and therefore the two auxiliary bulldozer blades (3) can be unfolded forward to lean against two ends of the main bulldozer blade (2) or are stored in the rear sides of two ends of the main bulldozer blade (2) in a reverse mode; an adjusting component for adjusting a connecting gap between the two components is arranged between the fixing frame (5) and the supporting seat (4).

2. The mini-excavator blade structure of claim 1, wherein: the adjusting assembly comprises a fixed block (6) and an adjusting bolt (7), the fixed block (6) is connected to the upper end face and/or the lower end face of the fixed frame (5), and the adjusting bolt (7) is spirally arranged on the fixed block (6) in a penetrating mode along the direction parallel to the main bulldozer blade (2); the upper end face and/or the lower end face of the supporting seat (4) are/is provided with a positioning stop block (8), and one end, far away from the fixed block (6), of the adjusting bolt (7) is abutted against the positioning stop block (8).

3. The mini-excavator blade structure of claim 2, wherein: the fixed block (6) is provided with a communication hole, and at least one side wall of the fixed block (6) is connected with a connecting nut (9) for the screw connection of the adjusting bolt (7); the connecting nut (9) and the communicating hole are coaxially arranged, and the inner diameter of the communicating hole is larger than the outer diameter of the adjusting bolt (7).

4. The mini-excavator blade structure of claim 2, wherein: each supporting seat (4) comprises two first connecting plates which are respectively connected to the upper side surface and the lower side surface of the two ends of the mounting beam (1), and the two first connecting plates are respectively provided with a first through hole; each fixing frame (5) comprises two second connecting plates (5.1), and the two second connecting plates (5.1) are respectively positioned on the upper side and the lower side of the two first connecting plates; the two second connecting plates (5.1) are provided with second through holes; the second connecting plate (5.1) positioned above is provided with a positioning backup plate (10), when the auxiliary bulldozer blade (3) is connected to the mounting beam (1) in an unfolding or containing state, the front side or the rear side of the first connecting plate positioned above is propped against the positioning backup plate (10), and positioning pins (11) are arranged in the first through hole and the second through hole in a penetrating mode.

5. The mini-excavator blade structure of claim 4, wherein: a hollow supporting tube (12) is arranged between the two first connecting plates of each supporting seat (4), an inner hole of the supporting tube (12) is communicated with the first through hole, and the positioning pin shaft (11) can penetrate through the inner hole of the supporting tube (12).

6. The micro excavator blade structure of any one of claims 1 to 5, wherein: the rear side of the mounting beam (1) is connected with two connecting square pipes (13) which are perpendicular to the main bulldozer blade (2) and are parallel to each other, and one ends of the two connecting square pipes (13) which are far away from the mounting beam (1) are respectively connected with the main body of the excavator.

7. The mini-excavator blade structure of claim 6, wherein: the rear side of the mounting beam (1) is positioned between the two connecting square pipes (13) and is connected with a driving cylinder assembly (14), and one end, away from the mounting beam (1), of the driving cylinder assembly (14) is connected with an excavator main body and is used for driving the telescopic action of the bulldozer blade.