Bucket rod lubricating structure

Abstract

The bucket rod lubricating structure comprises a support cylinder barrel, a support forge piece, a support web and a support shaft sleeve, oil injection ports are symmetrically formed in the two side walls of the support web, an axis is arranged in the width direction of the support web, lubricating pipes are symmetrically arranged on the two sides of the axis, one ends of the lubricating pipes are connected with the oil injection ports, and the other ends of the lubricating pipes are connected with the support shaft sleeve. The other end of the lubricating pipe penetrates through the support forge piece to be connected with the support shaft sleeve, lubricating oil injected from the oil injection port flows into the support shaft sleeve through the lubricating pipe, the problem that the lubricating oil is not evenly injected into the support cylinder barrel is solved, and the use amount of the lubricating oil can be greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery, and in particular relates to a bucket rod lubrication structure. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] An excavator is a kind of engineering machinery widely used in earthwork construction. The front side of the excavator is equipped with attachments, such as a bucket, a breaker hammer and a hydraulic shear. The attachments are connected to the excavator through a boom and a stick. The front end of the boom is equipped with an attachment cylinder for controlling the movement of the attachment, and the upper part of the boom is equipped with a stick cylinder for controlling the movement of the stick.

[0004] The inventor found that the existing bucket rod has the following technical problems:

[0005] At present, the front axle seat of the bucket arm on the market occasionally has a sleeve failure. After research, it was found that the front axle seat of the bucket arm has poor lubrication. Specifically, the existing lubrication solution is as follows Figure 1 As shown, when filling grease for the first time, the internal cavity of the support steel cylinder must be filled with grease before the grease will flow from the middle support steel cylinder to the support sleeves on both sides. During the first filling, since the overall size of the front axle seat of the boom is too wide, if the front axle seat of the boom is tilted relative to the ground, the amount of grease flowing to the sleeves on both sides cannot be guaranteed to be completely uniform. Sometimes grease overflows on one side while the grease on the other side is not yet filled. In this case, the excavator will have a sleeve jump. Utility Model Content

[0006] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a boom lubrication structure.

[0007] To achieve the above-mentioned purpose, one or more embodiments of the utility model provide the following technical solutions: a boom lubrication structure, comprising a support cylinder, a support forging, a support web and a support sleeve, wherein oil filling ports are symmetrically arranged on both side walls of the support web, an axis is arranged in the width direction of the support web, and lubrication pipes are symmetrically arranged on both sides of the axis, one end of the lubrication pipe is connected to the oil filling port, and the other end of the lubrication pipe passes through the support forging and is connected to the support sleeve, and the lubricating oil injected from the oil filling port flows into the support sleeve through the lubrication pipe.

[0008] It is further configured that the lubrication pipe includes a first pipe section and a second pipe section, the first pipe section is perpendicular to the side wall surface of the support web, and the second pipe section is perpendicular to the side wall surface of the support forging.

[0009] It is further configured that a curvature is provided at a connection between the first pipe segment and the second pipe segment.

[0010] It is further configured that the lubrication pipe is an L-shaped pipe.

[0011] It is further configured that the lubrication pipe is arranged in the support web.

[0012] It is further configured that the oil filling port is a circular ring fixedly installed at the end of the oil filling pipe.

[0013] It is further configured that the oil filling ports are symmetrically arranged on both sides of the axis of the support web.

[0014] It is further configured that a support wear ring is arranged inside the support sleeve.

[0015] It is further configured that the support forging is fixedly mounted with an end cover by fixing bolts.

[0016] It is further configured that support forgings are installed on both sides of the support cylinder, one end of the support forging is fixedly connected to the support web, and a support sleeve is arranged in the support forging.

[0017] One or more of the above technical solutions have the following beneficial effects:

[0018] (1) Grease is injected through the symmetrically arranged oil filling ports. The grease passes through the lubrication pipe, the support forging, and the support sleeve and finally enters the front support sleeve cavity. It no longer flows through the cylinder barrel, but directly flows into the sleeve that needs lubrication, so that the pin in the sleeve can form a uniform oil film, preventing the pin and the sleeve from drying out and heating up, which may cause the sleeve to jump out of the sleeve.

[0019] (2) Each oil filling port corresponds to a lubrication point. When filling grease for the first time, it is no longer necessary to fill the front axle seat steel cylinder. This can greatly reduce the amount of grease used, especially on large and super-large excavators. Later, when the excavator is working, grease can be filled separately according to different grease consumption, and the filling effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0021] Figure 1 It is a structural schematic diagram of the existing boom lubrication structure.

[0022] Figure 2 This is a schematic diagram of the new structure of the present application.

[0023] Reference numerals:

[0024] 1 support forging; 2 support web; 3 support cylinder; 4 support sleeve; 5 lubrication pipe; 51 first pipe section; 52 second pipe section; 6 oil filling port; 7 support wear ring; 8 fixing bolt; 9 end cover. DETAILED DESCRIPTION

[0025] It should be noted that the following detailed descriptions are exemplary and are intended to provide further description of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention.

[0027] In the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0028] The general idea proposed by the utility model is shown in FIG. 1 , a bucket rod lubrication structure, referring to Figure 2 , including a support cylinder 3, a support forging 1, a support web 2 and a support sleeve 4, oil filling ports 6 are symmetrically arranged on both side walls of the support web 2, an axis is arranged in the width direction of the support web 2, and lubrication pipes are symmetrically arranged on both sides of the axis, one end of the lubrication pipe is connected to the oil filling port 6, and the other end of the lubrication pipe passes through the support forging 1 and is connected to the support sleeve 4, and the lubricating oil injected from the oil filling port 6 flows into the support sleeve 4 through the lubrication pipe.

[0029] In order to adapt to the internal structure of the boom shaft seat, the lubrication pipe includes a first pipe section 51 and a second pipe section 52. In order to adapt to the internal structure of the boom shaft seat, the first pipe section 51 is perpendicular to the side wall surface of the support web 2, and the second pipe section 52 is perpendicular to the side wall surface of the support forging 1.

[0030] The connection between the first pipe section 51 and the second pipe section 52 is provided with an arc to ensure the smoothness of the lubricating oil.

[0031] The lubrication pipe is an L-shaped pipe, and the symmetrically installed lubrication pipe is set back to the support web 2. The lubricating oil flows directly from the lubrication pipes on both sides into the support sleeve 4 that needs lubrication, avoiding uneven distribution of lubricating oil on both sides of the support sleeve 4.

[0032] The oil filling port 6 is a ring fixedly installed at the end of the oil filling pipe. A metal ring is welded at the end of the oil filling pipe. The inner diameter of the metal ring is larger than the inner diameter of the oil filling pipe, which increases the oil delivery speed.

[0033] The oil filling ports 6 are symmetrically arranged on both sides of the axis of the support web 2, and each oil port corresponds to a lubrication point. Later, when the excavator is working, butter is filled separately according to different butter consumptions, and the filling effect is better.

[0034] A support wear ring 7 is arranged in the support sleeve 4. After the pin is installed in the support sleeve, the wear ring reduces the friction of the side wall of the pin.

[0035] Reference Figure 1 and Figure 2 The support forging 1 is fixedly mounted with an end cover 9 by fixing bolts 8. Several fixing bolts 8 are arranged along the circumferential direction of the end cover 9. The end cover 9 can prevent the leakage of lubricating oil.

[0036] Support forgings 1 are installed on both sides of the support cylinder 3, one end of the support forging is fixedly connected to the support web 2, a support sleeve 4 is arranged in the support forging, and the support forging 1 and the support web 2 are integrally formed.

[0037] Lubrication principle:

[0038] The grease is injected through two symmetrically arranged oil filling ports 6, and the grease finally enters the inner cavity of the support sleeve 4 through the lubrication tube, the support forging 1, and the support sleeve 4. After the pin shaft penetrates the support sleeve 4, an oil film with a gap of about 0.1mm-0.2mm is formed between the inner diameter of the support sleeve 4 and the pin shaft. The role of the oil film is to play a lubricating role when the excavator is working, so as to prevent the pin shaft and the sleeve from dry grinding and heating, which may cause the sleeve to jump out of the sleeve.

[0039] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A boom lubrication structure, comprising a support cylinder, a support forging, a support web and a support sleeve, characterized in that: Oil filling ports are symmetrically arranged on both side walls of the support web, an axis is arranged in the width direction of the support web, and lubrication tubes are symmetrically arranged on both sides of the axis, one end of the lubrication tube is connected to the oil filling port, and the other end of the lubrication tube passes through the support forging and is connected to the support sleeve, and the lubricating oil injected from the oil filling port flows into the support sleeve through the lubrication tube.

2. The arm lubrication structure according to claim 1, characterized in that: The lubrication pipe comprises a first pipe section and a second pipe section, wherein the first pipe section is perpendicular to the side wall surface of the support web, and the second pipe section is perpendicular to the side wall surface of the support forging.

3. The arm lubrication structure according to claim 2, characterized in that: A curvature is arranged at the connection between the first pipe section and the second pipe section.

4. The arm lubrication structure according to claim 1, characterized in that: The lubrication pipe is an L-shaped pipe.

5. The arm lubrication structure according to claim 1, characterized in that: The lubrication pipe is arranged in the web of the support.

6. The arm lubrication structure according to claim 1, characterized in that: The oil filling port is a circular ring fixedly installed at the end of the oil filling pipe.

7. The arm lubrication structure according to claim 1, characterized in that: The oil filling ports are symmetrically arranged on both sides of the axis of the web of the support.

8. The arm lubrication structure according to claim 1, characterized in that: A bearing wear-resistant ring is arranged inside the bearing sleeve.

9. The arm lubrication structure according to claim 1, characterized in that: The support forging is fixedly mounted with an end cover by fixing bolts.

10. The arm lubrication structure according to claim 1, characterized in that: Support forgings are installed on both sides of the support cylinder, one end of the support forging is fixedly connected to the support web, and a support sleeve is arranged in the support forging.

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