CN214033839U

CN214033839U - Protection device for oil cylinder of dozer blade

Info

Publication number: CN214033839U
Application number: CN202022365119.2U
Authority: CN
Inventors: 孙仁元; 王毅; 顾香
Original assignee: Xuzhou XCMG Excavator Machinery Co Ltd
Current assignee: Xuzhou XCMG Excavator Machinery Co Ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-08-24
Anticipated expiration: 2030-10-22

Abstract

The utility model discloses a protective device for a bulldozer oil cylinder, which comprises a lower frame front cover plate, a connecting rod assembly, a protective plate assembly, a bulldozer assembly and an oil cylinder; one end of the oil cylinder is movably connected with the dozer blade assembly, and the other end of the oil cylinder is movably connected with a front cover plate of the lower frame; one end of the connecting rod assembly is movably connected with a front cover plate of the lower frame, and the other end of the connecting rod assembly is movably connected with the protection plate assembly; the other end of the protection plate assembly is movably connected with the dozer blade assembly; the utility model discloses in the excavator use, the hydro-cylinder motion is followed to the backplate, and coverage area is bigger, and transfers and lift up the in-process at the dozer blade, and whole cover in the hydro-cylinder top can prevent more effectively that the hydro-cylinder from being pounded by the heavy object.

Description

Protection device for oil cylinder of dozer blade

Technical Field

The utility model relates to a dozer blade hydro-cylinder protection device belongs to engineering machine tool technical field.

Background

The lower vehicle structure of the wheel type excavator mainly comprises a main frame, a left frame, a right frame, a mudguard and a dozer blade, wherein the dozer blade is driven to operate by a hydraulic oil cylinder. In the construction process of the wheel type excavator, the dozer blade can play the roles of leveling the road surface, cleaning sundries, pushing materials, stabilizing the machine body and the like. However, the oil cylinder of the blade is usually exposed, and if the oil cylinder is impacted by a heavy object, the oil cylinder is easily damaged to cause oil leakage or the piston rod is deformed, so that the blade cannot be normally used. Therefore, it is necessary to install a protection device on the oil cylinder of the dozer blade.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome among the prior art dozer blade hydro-cylinder and expose outside usually, if receive the heavy object impact, the hydro-cylinder then very easily impaired oil leak or the piston rod deformation that leads to not enough, provide a dozer blade hydro-cylinder protection device.

A protection device for a dozer blade oil cylinder comprises a lower frame front cover plate, a connecting rod assembly, a protection plate assembly, the dozer blade assembly and the oil cylinder;

one end of the oil cylinder is movably connected with the dozer blade assembly, and the other end of the oil cylinder is movably connected with a front cover plate of the lower frame;

one end of the connecting rod assembly is movably connected with a front cover plate of the lower frame, and the other end of the connecting rod assembly is movably connected with the protection plate assembly; the other end of the protection plate assembly is movably connected with the dozer blade assembly.

Furthermore, a fixing rod is arranged at the bottom of the dozer blade assembly and is movably connected with the front cover plate of the lower frame.

Furthermore, the front cover plate of the lower frame is provided with a hinge point b for connecting the oil cylinder and a hinge point a for connecting the fixing rod.

Furthermore, the hinge point b is connected with the oil cylinder through a pin shaft four.

Further, the hinge point a is connected with a hinge point f of the fixing rod through a first pin shaft.

Furthermore, the connecting rod assembly is provided with a fixed shaft.

Furthermore, the guard plate assembly includes the guard plate, the one end of guard plate be equipped with the pivot that the dozer blade assembly is connected, the other end be equipped with the hinge point e that the connecting rod assembly is connected.

Further, the hinge point e is connected with the connecting rod assembly through a first pin shaft.

Compared with the prior art, the utility model discloses the beneficial effect who reaches: in the excavator use, the backplate follows the hydro-cylinder motion, and coverage area is bigger, and transfers and lift up the in-process at the dozer blade, and whole cover in the hydro-cylinder top can prevent more effectively that the hydro-cylinder from being injured by the heavy object pounding.

Drawings

FIG. 1 is a schematic view of the structure of the blade of the present invention when it is lowered;

FIG. 2 is a schematic view of the structure of the utility model when the blade is lifted

FIG. 3 is an overall exploded view of the present invention;

FIG. 4 is a schematic view of the structure of the lower frame dozer blade fixing bracket of the utility model;

FIG. 5 is a schematic view of the connecting rod assembly of the present invention;

FIG. 6 is a schematic view of the structure of the guard plate assembly of the present invention;

FIG. 7 is a schematic view of the blade assembly of the present invention;

fig. 8 is a schematic view of the oil cylinder of the present invention.

In the figure: 1. a lower frame front cover plate; 2. a connecting rod assembly; 3. a guard plate assembly; 4. a blade assembly; 5. An oil cylinder assembly; 1-1, a hinge point a; 1-2, a hinge point b; 2-1, a hinge point c; 2-2, fixing the shaft; 2-3, a hinge point d; 3-1, and a hinge point e; 3-2, a protection plate; 3-3, a rotating shaft; 4-1, a hinge point f; 4-2, hinge point g; 4-3, hinging point h; 5. an oil cylinder; 6. a first pin shaft; 7. a second pin shaft; 8. a third pin shaft; 9. a pin shaft IV; 10. a fifth pin shaft; 11. and (5) fixing the rod.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1-8, a protection device for a blade cylinder is disclosed, which comprises a lower frame front cover plate 1, a connecting rod assembly 2, a protection plate assembly 3, a blade assembly 4 and a cylinder 5;

one end of the oil cylinder 5 is movably connected with the dozer blade assembly 4, and the other end of the oil cylinder is movably connected with the lower frame front cover plate 1;

as shown in fig. 1 and 5, one end of the connecting rod assembly 2 is movably connected with a front cover plate 1 of the lower frame, and the other end is movably connected with a protection plate assembly 3; the connecting rod assembly 2 is provided with a fixed shaft 2-2, a hinge point d2-3 for connecting the lower frame front cover plate 1 and a hinge point c2-1 for connecting the protection plate assembly 3; the hinge point c2-1 is connected with the protection plate assembly 3 through a second pin shaft 7. The hinge point d2-3 is connected with the lower frame front cover plate 1 through a pin shaft four 9.

As shown in fig. 1, 2 and 6, the other end of the guard plate assembly 3 is movably connected with the blade assembly 4; the concrete connection mode is as follows: the protection plate assembly 3 comprises a protection plate 3-2, one end of the protection plate 3-2 is provided with a rotating shaft 3-3 connected with the dozer blade assembly 4, and the other end of the protection plate 3-2 is provided with a hinge point e3-1 connected with the connecting rod assembly 2. And the rotating shaft 3-3 is connected with the dozer blade assembly 4 through a third pin shaft 8. The hinge point e3-1 is connected with the connecting rod assembly 2 through a second pin shaft 7.

As shown in fig. 1, 2 and 7, a fixing rod 11 is arranged at the bottom of the blade assembly 4, and the fixing rod 11 is movably connected with the lower frame front cover plate 1. The front cover plate 1 of the lower frame is provided with a hinge point b1-2 used for connecting the oil cylinder 5 and a hinge point a1-1 used for connecting the fixed rod 11. The hinge point b1-2 is connected with the oil cylinder 5 through a pin shaft four 9. The hinge point a1-1 is connected with the hinge point f4-1 of the fixed rod 11 through a first pin shaft 6.

The oil cylinder 5 stretches and retracts to drive the dozer blade assembly 4 to lift up and lower down. The guard plate assembly 3 moves up and down along with the blade assembly 4, thereby driving the link assembly 2 to swing around the hinge point d 2-3. The protection plate assembly 3 is ensured to cover the oil cylinder 5 all the time.

The connecting forms are all movably connected, and when the oil cylinder 5 breaks down, the guard plate assembly is conveniently detached to maintain the oil cylinder.

The use process comprises the following steps: as shown in fig. 1 and 2, the hydraulic oil cylinder 5 is controlled by the control handle to extend along the direction B, so that the dozer blade is lowered, and the protection plate assembly 2 is completely covered above the oil cylinder assembly 5 all the time; as shown in figure 2, in the use process, the hydraulic oil cylinder 5 is controlled to be compressed along the direction A through the control handle, the lifting of the dozer blade is realized, and the protection plate assembly 2 can still completely cover the upper part of the hydraulic oil cylinder assembly 5 in the whole process. When the excavator is used for operating the dozer blade, the dozer blade protection device does not influence the operation range of the dozer blade on the one hand, and on the other hand, the oil cylinder can be effectively protected in the whole motion process of the dozer blade, so that the reliability of the excavator is greatly improved, the service life of the hydraulic oil cylinder is prolonged, and the maintenance cost is reduced.

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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. A protection device for a dozer blade oil cylinder is characterized by comprising a lower frame front cover plate (1), a connecting rod assembly (2), a protection plate assembly (3), a dozer blade assembly (4) and an oil cylinder (5);

one end of the oil cylinder (5) is movably connected with the dozer blade assembly (4), and the other end of the oil cylinder is movably connected with the lower frame front cover plate (1);

one end of the connecting rod assembly (2) is movably connected with the lower frame front cover plate (1), and the other end of the connecting rod assembly is movably connected with the protection plate assembly (3); the other end of the protection plate assembly (3) is movably connected with the dozer blade assembly (4).

2. The protection device for the oil cylinder of the dozer blade as claimed in claim 1, wherein a fixing rod (11) is arranged at the bottom of the dozer blade assembly (4), and the fixing rod (11) is movably connected with a part of the front cover plate (1) of the lower frame.

3. The device for protecting a blade cylinder of a bulldozer according to claim 2, in which said lower frame front cover (1) is provided with a hinge point b (1-2) for connecting said cylinder (5) and a hinge point a (1-1) for connecting said securing rod (11).

4. A dozer blade cylinder protector as claimed in claim 3 wherein said hinge point b (1-2) is connected to said cylinder (5) by a pin four (9).

5. A dozer blade cylinder protection as claimed in claim 3 wherein said hinge point a (1-1) is connected to hinge point f (4-1) of said fixed rod (11) by a pin (6).

6. A device for protecting the cylinder of a dozer blade according to claim 1 wherein the link assembly (2) is provided with a fixed axle (2-2).

7. The protection device for the oil cylinder of the dozer blade as claimed in claim 1, wherein the protection plate assembly (3) comprises a protection plate (3-2), one end of the protection plate (3-2) is provided with a rotating shaft (3-3) connected with the dozer blade assembly (4), and the other end of the protection plate is provided with a hinge point e (3-1) connected with the connecting rod assembly (2).

8. The device for protecting a blade cylinder of a bulldozer according to claim 7, wherein said hinge point e (3-1) is connected to said link assembly (2) by means of a first pin (6).