CN109989436B - Bulldozer blade of excavator - Google Patents
Bulldozer blade of excavator Download PDFInfo
- Publication number
- CN109989436B CN109989436B CN201910369434.1A CN201910369434A CN109989436B CN 109989436 B CN109989436 B CN 109989436B CN 201910369434 A CN201910369434 A CN 201910369434A CN 109989436 B CN109989436 B CN 109989436B
- Authority
- CN
- China
- Prior art keywords
- bulldozer
- main
- oil cylinder
- blade
- auxiliary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/815—Blades; Levelling or scarifying tools
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/815—Blades; Levelling or scarifying tools
- E02F3/8155—Blades; Levelling or scarifying tools provided with movable parts, e.g. cutting discs, vibrating teeth or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/84—Drives or control devices therefor, e.g. hydraulic drive systems
Abstract
An excavator bulldozer blade comprises a blade assembly, wherein the blade assembly comprises a main blade and auxiliary blades, and the auxiliary blades are arranged on two sides of the main blade through sliding grooves; the middle part of the bulldozer blade assembly is connected with a mounting bracket in front of the excavator, the bulldozer blade assembly is connected with the mounting bracket of the excavator through a main oil cylinder and a secondary oil cylinder, the main oil cylinder is connected with the main bulldozer blade, and the secondary oil cylinder is connected with the secondary bulldozer blade. According to the invention, the main bulldozer plate and the auxiliary bulldozer plate are adopted, the main bulldozer plate is connected with the main oil cylinder, the auxiliary bulldozer plate is connected with the auxiliary oil cylinder, the main oil cylinder can adjust the height of the bulldozer plate, the auxiliary oil cylinder can adjust the deflection angle of the bulldozer plate, the auxiliary bulldozer plate can slide outwards relative to the main bulldozer plate in the deflection process of the auxiliary oil cylinder, the total length of the bulldozer plate assembly is prolonged, the action width of the bulldozer plate assembly is not excessively shortened, and the deflection of the bulldozer plate can enable soil and stones in front to slide to one side of the bulldozer plate, so that the load of the excavator is reduced.
Description
Technical Field
The invention relates to the field of excavator structures, in particular to an excavator bulldozer blade.
Background
The excavator becomes the king of engineering machinery and is widely applied to various occasions, including various severe working conditions. For China in the accelerated stage of urban development, the foundation construction of the foundation, such as the happiness, has stimulated the demand for the excavator, and the variety and the application range of the excavator are wider and wider. Bulldozers are very frequently used devices for excavators, not only to bulldoze but also to level a site. The bulldozer blade is mounted at the front end of the frame through a connecting rod, and the bulldozer blade is lifted or lowered through a hydraulic cylinder.
The patent publication No. CN208121840U discloses a blade of an excavator, which is provided with a telescopic mechanism and a blade, wherein the telescopic mechanism feeds the blade out of a sliding groove of a blade body, so that a blade part is changed into an area formed by adding the blade and the blade, thereby increasing the blade area of the blade body, improving the leveling speed of the excavator and improving the leveling efficiency. Although this patent can increase the blade, when the blade is pushed forward with a heavy load, the load on the blade increases and the blade is also loaded, and when a large amount of stone is hit, the excavator is pushed forward with a heavy load, which may cause a large energy consumption and damage the blade connection structure.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the bulldozer blade of the excavator, which adopts the main bulldozer blade and the auxiliary bulldozer blade, the main bulldozer blade is connected with the main oil cylinder, the auxiliary bulldozer blade is connected with the auxiliary oil cylinder, the main oil cylinder can adjust the height of the bulldozer blade, the auxiliary oil cylinder can adjust the deflection angle of the bulldozer blade, the auxiliary bulldozer blade can slide outwards relative to the main bulldozer blade in the deflection process of the auxiliary oil cylinder, the overall length of the bulldozer blade assembly is prolonged, the action width of the bulldozer blade assembly is not excessively shortened, the deflection of the bulldozer blade can slide soil and stones in front to one side of the bulldozer blade, the load of the excavator is reduced, and the working efficiency of the excavator is improved.
The specific technical scheme of the invention is as follows: an excavator blade comprising a blade assembly including a main blade and secondary blades mounted on either side of the main blade by runners; the middle part of the bulldozer blade assembly is connected with a mounting bracket in front of the excavator, the bulldozer blade assembly is connected with the mounting bracket of the excavator through a main oil cylinder and a secondary oil cylinder, the main oil cylinder is connected with the main bulldozer blade, and the secondary oil cylinder is connected with the secondary bulldozer blade.
Therefore, the main oil cylinder can adjust the height of the bulldozer blade assembly, the auxiliary oil cylinder can adjust the deflection angle of the bulldozer blade assembly, the auxiliary bulldozer blade can slide outwards relative to the main bulldozer blade in the deflection process of the auxiliary oil cylinder, the overall length of the bulldozer blade assembly is prolonged, and the action width of the bulldozer blade assembly is ensured not to be too shortened.
Preferably, the middle rear part of the main bulldozer blade is connected with the mounting bracket through a connecting frame, the connecting frame is vertically hinged with the main bulldozer blade, and the connecting frame is transversely hinged with the mounting bracket.
Therefore, the bulldozer blade assembly can rotate relative to the connecting frame to realize deflection, and the connecting frame can rotate up and down relative to the mounting bracket to drive the bulldozer blade assembly to move up and down to adjust the height above the ground.
As the preferable mode of the invention, the installation position of the main oil cylinder is positioned above the connecting frame, the main oil cylinder is a double-acting piston cylinder and is transversely hinged with the mounting frame through a first transverse installation seat, is transversely hinged with the main bulldozer plate through a transition connection seat, and is vertically hinged with the mounting frame.
Therefore, the main oil cylinder, the connecting frame, the mounting bracket and the main bulldozer plate form a quadrangle in the vertical direction, and the adjustment of the ground clearance of the bulldozer plate assembly can be realized through the telescopic action of the main oil cylinder; the axle center of the vertical hinge joint between the transition connecting seat and the mounting bracket and the axle center of the vertical hinge joint between the connecting frame and the main bulldozer plate are collinear, so that the normal deflection of the bulldozer plate assembly can be ensured.
In the invention, the auxiliary oil cylinder is a single-acting plunger cylinder and is transversely hinged with the mounting bracket through a second transverse mounting seat and is vertically hinged with the auxiliary bulldozer plate.
Therefore, when the bulldozer blade assembly needs to deflect, the auxiliary oil cylinder on one side is pressurized, the auxiliary oil cylinder on the other side is depressurized, and the deflection towards the direction of the auxiliary oil cylinder on the depressurized side can be realized.
Preferably, the two oil inlets of the main oil cylinder are connected to a hydraulic valve through an oil pipe, and the hydraulic valve at least comprises a double-hydraulic control one-way valve acting on the two oil inlets of the main oil cylinder.
Therefore, the double-hydraulic control one-way valve, namely the bidirectional hydraulic lock, can enable the main oil cylinder to control the lifting of the bulldozer plate assembly to maintain a pressure maintaining state after the telescopic action of the main oil cylinder, and the hydraulic valve can cancel the power input to the main oil cylinder and can also maintain the bulldozer plate assembly.
Preferably, the oil inlet of the auxiliary oil cylinder is connected to a hydraulic valve through an oil pipe, and the hydraulic valve at least comprises a hydraulic control one-way valve acting on the oil inlet of the auxiliary oil cylinder.
Therefore, the hydraulic control one-way valve can ensure that the auxiliary oil cylinder is kept in a pressure maintaining state after extending, and the state of the bulldozer plate assembly can be kept even if the hydraulic valve cancels the power input to the auxiliary oil cylinder under the normal state or the deflection state of the bulldozer plate assembly.
Preferably, the oil inlet of the auxiliary oil cylinder is connected to a hydraulic valve through an oil pipe, the hydraulic valve further comprises an adjustable overflow valve, and the two auxiliary oil cylinders are controlled by the same adjustable overflow valve.
Therefore, the pressures of the two auxiliary cylinders are kept the same, when a large stone exists in front of the bulldozer plate assembly, the bulldozer plate assembly can be subjected to self-adaptive deflection adjustment, and the pressure of the auxiliary cylinders can be adjusted according to the volume and the quantity of the soil containing the stone through pressure adjustment of the adjustable overflow valve.
In the present invention, the adjustable relief valve is a pilot relief valve, and the pilot valve is installed in the cabin of the excavator by extending an oil pipe.
Therefore, the adjustable overflow valve can be adjusted through adjustment of the pilot valve installed in the cockpit, and the adjustable overflow valve is more convenient and quicker.
In summary, the invention has the following beneficial effects:
according to the invention, the main bulldozer blade and the auxiliary bulldozer blade are adopted, the main bulldozer blade is connected with the main oil cylinder, the auxiliary bulldozer blade is connected with the auxiliary oil cylinder, the main oil cylinder can adjust the height of the bulldozer blade, the auxiliary oil cylinder can adjust the deflection angle of the bulldozer blade, the auxiliary bulldozer blade can slide outwards relative to the main bulldozer blade in the deflection process of the auxiliary oil cylinder, the overall length of the bulldozer blade assembly is prolonged, the action width of the bulldozer blade assembly is not excessively shortened, the deflection of the bulldozer blade can enable soil and stones in front to slide to one side of the bulldozer blade, the load of the excavator is reduced, and the working efficiency of the excavator is improved.
Drawings
FIG. 1 is a schematic view of an excavator blade of the present invention in an in-situ condition;
FIG. 2 is a schematic view of an excavator blade of the present invention in a deflected to the left;
in the figures, the 1-blade assembly, the 11-main blade, the 12-auxiliary blade, the 2-main cylinder, the 3-auxiliary cylinder, the 4-mounting bracket, the 41-first transverse mounting seat, the 42-second transverse mounting seat, the 5-connecting frame and the 6-transition connecting seat are shown.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings.
Referring to fig. 1 and 2, an excavator blade includes a blade assembly 1, the blade assembly 1 including a main blade 11 and sub blades 12, the sub blades 12 being mounted on both sides of the main blade 11 through a chute; the middle part of the blade assembly 1 is connected with a mounting bracket 4 in front of the excavator, and the blade assembly 1 is connected with the excavator mounting bracket 4 through a main oil cylinder 2 and a secondary oil cylinder 3, wherein the main oil cylinder 2 is connected with a main blade 11, and the secondary oil cylinder 3 is connected with a secondary blade 12.
Thereby, the main cylinder 2 can adjust the height of the bulldozer blade assembly 1, the auxiliary cylinder 3 can adjust the deflection angle of the bulldozer blade assembly 1, and in the deflection process of the auxiliary cylinder 3, the auxiliary bulldozer blade 12 can slide outwards relative to the main bulldozer blade 11, so that the overall length of the bulldozer blade assembly 1 is prolonged, and the action width of the bulldozer blade assembly 1 is ensured not to be excessively shortened.
As shown in fig. 1 and 2, the middle rear part of the main bulldozer plate 11 is connected with the mounting bracket 4 through the connecting frame 5, the connecting frame 5 is vertically hinged with the main bulldozer plate 11, and the connecting frame 5 is transversely hinged with the mounting bracket 4.
Thereby, the blade assembly 1 can rotate relative to the link 5 to deflect, and the link 5 can rotate up and down relative to the mounting bracket 4 to drive the blade assembly 1 to move up and down to adjust the height from the ground.
As shown in fig. 1 and 2, the installation position of the main oil cylinder 2 is located above the connecting frame 5, the main oil cylinder 2 is a double-acting piston cylinder and is transversely hinged with the mounting frame 4 through a first transverse mounting seat 41, is transversely hinged with the main bulldozer blade 11 through a transition connecting seat 6, and is vertically hinged with the mounting frame 4 through the transition connecting seat 6.
Therefore, the main oil cylinder 2, the connecting frame 5, the mounting bracket 4 and the main bulldozer plate 11 form a quadrangle in the vertical direction, and the adjustment of the height of the bulldozer plate assembly 1 from the ground can be realized through the telescopic action of the main oil cylinder 2; the vertical hinged axle center between the transition connecting seat 6 and the mounting bracket 4 and the vertical hinged axle center between the connecting frame 5 and the main bulldozer plate 11 are collinear, so that the normal deflection of the bulldozer plate assembly 1 can be ensured.
As shown in fig. 1 and 2, the auxiliary cylinder 3 is a single-acting plunger cylinder, and is hinged with the mounting bracket 4 transversely through a second transverse mounting seat 42 and hinged with the auxiliary bulldozer plate 12 vertically.
Thus, when the blade assembly 1 is required to deflect, the sub-cylinder 3 on one side is pressed, the sub-cylinder 3 on the other side is depressurized, and deflection in the direction of the sub-cylinder 3 on the depressurized side can be realized.
The two oil inlets of the main oil cylinder 2 are connected to a hydraulic valve by an oil pipe, and the hydraulic valve at least comprises a double-hydraulic control one-way valve acting on the two oil inlets of the main oil cylinder 2.
Thus, the double hydraulic control check valve, that is, the bidirectional hydraulic lock, can enable the main oil cylinder 2 to extend and retract to control the lifting of the bulldozer blade assembly 1 and then maintain a pressure maintaining state, and the hydraulic valve can cancel the power input to the main oil cylinder 2 and also maintain the state of the bulldozer blade assembly 1.
The oil inlet of the auxiliary oil cylinder 3 is connected to a hydraulic valve by an oil pipe, and the hydraulic valve at least comprises a hydraulic control one-way valve acting on the oil inlet of the auxiliary oil cylinder 3.
Thus, the pilot operated check valve can ensure that the sub-cylinder 3 is maintained in a pressure maintaining state after being extended, and the state of the blade assembly 1 can be maintained even if the hydraulic valve cancels the power input to the sub-cylinder 3 in the normal state or the deflected state of the blade assembly 1.
The oil inlets of the auxiliary cylinders 3 are connected to a hydraulic valve by oil pipes, the hydraulic valve further comprises an adjustable overflow valve, and the two auxiliary cylinders 3 are controlled by the same adjustable overflow valve.
Thus, the pressures of the two auxiliary cylinders 3 remain the same, the bulldozer assembly 1 can be adaptively deflected and adjusted when a large stone is in front of the bulldozer assembly 1, and the pressure of the auxiliary cylinders 3 can be adjusted by adjusting the pressure of the adjustable relief valve according to the volume and the number of the stones in the soil.
The adjustable overflow valve is a pilot overflow valve, and the pilot valve is arranged in the cab of the excavator in an extending way through an oil pipe.
Therefore, the adjustable overflow valve can be adjusted through adjustment of the pilot valve installed in the cockpit, and the adjustable overflow valve is more convenient and quick.
The above examples are only illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical scheme of the present invention will fall within the protection scope of the present invention without departing from the design concept of the present invention, and the technical content of the present invention is fully described in the claims.
Claims (3)
1. An excavator bulldozer blade, which is characterized in that: comprising a blade assembly (1), the blade assembly (1) comprising a main blade (11) and secondary blades (12), the secondary blades (12) being mounted on both sides of the main blade (11) by means of runners; the middle part of the bulldozer blade assembly (1) is connected with a mounting bracket (4) in front of the excavator, the bulldozer blade assembly (1) is connected with the mounting bracket (4) of the excavator through a main oil cylinder (2) and a secondary oil cylinder (3), the main oil cylinder (2) is connected with the main bulldozer blade (11), and the secondary oil cylinder (3) is connected with the secondary bulldozer blade (12); the middle rear part of the main bulldozer plate (11) is connected with the mounting bracket (4) through a connecting frame (5), the connecting frame (5) is vertically hinged with the main bulldozer plate (11), and the connecting frame (5) is transversely hinged with the mounting bracket (4); the main oil cylinder (2) is arranged above the connecting frame (5), the main oil cylinder (2) is a double-acting piston cylinder and is transversely hinged with the mounting bracket (4) through a first transverse mounting seat (41), is transversely hinged with the main bulldozer plate (11) through a transition connecting seat (6), and is vertically hinged with the mounting bracket (4); the auxiliary oil cylinder (3) is a single-acting plunger cylinder and is transversely hinged with the mounting bracket (4) through a second transverse mounting seat (42) and is vertically hinged with the auxiliary bulldozer plate (12); two oil inlets of the main oil cylinder (2) are connected to a hydraulic valve through oil pipes, and the hydraulic valve at least comprises double-hydraulic control one-way valves acting on the two oil inlets of the main oil cylinder (2); the oil inlet of the auxiliary oil cylinder (3) is connected to a hydraulic valve through an oil pipe, and the hydraulic valve at least comprises a hydraulic control one-way valve acting on the oil inlet of the auxiliary oil cylinder (3).
2. An excavator blade as claimed in claim 1, wherein: the hydraulic valve further comprises an adjustable overflow valve, and the two auxiliary cylinders (3) are controlled by the same adjustable overflow valve.
3. An excavator blade as claimed in claim 2, wherein: the adjustable overflow valve is a pilot type overflow valve, and the pilot valve is arranged in the cab of the excavator in an extending mode through an oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369434.1A CN109989436B (en) | 2019-05-06 | 2019-05-06 | Bulldozer blade of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910369434.1A CN109989436B (en) | 2019-05-06 | 2019-05-06 | Bulldozer blade of excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109989436A CN109989436A (en) | 2019-07-09 |
| CN109989436B true CN109989436B (en) | 2023-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910369434.1A Active CN109989436B (en) | 2019-05-06 | 2019-05-06 | Bulldozer blade of excavator |
Country Status (1)
| Country | Link |
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| CN (1) | CN109989436B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112064703B (en) * | 2020-09-15 | 2022-09-13 | 山东德奇力机械有限公司 | Free adjusting device of excavator dozer blade |
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| JPH08296251A (en) * | 1995-04-27 | 1996-11-12 | Kubota Corp | Working vehicle with dozer |
| JPH09256408A (en) * | 1996-03-22 | 1997-09-30 | Mitsubishi Agricult Mach Co Ltd | Operation device for bladed work machine |
| JPH10195917A (en) * | 1997-01-16 | 1998-07-28 | Hitachi Constr Mach Co Ltd | Operation vehicle with earth removing device |
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2019
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| CN109989436A (en) | 2019-07-09 |
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