Bucket rod rear seat lubricating structure

Abstract

The utility model discloses a bucket rod rear seat lubricating structure, which belongs to the technical field of movable arm bucket rods and comprises a non-porous cylinder, a first rear seat is arranged at one end of the non-porous cylinder, and a second rear seat is arranged at the other end of the non-porous cylinder. Oil ducts are arranged on the first rear seat and the second rear seat, and the oil ducts on the first rear seat and the second rear seat are symmetrically arranged; grooved shaft sleeves are arranged in the first rear seat and the second rear seat, outer grooves are formed in the outer surfaces of the grooved shaft sleeves, through holes are formed in the outer grooves, inner grooves are formed in the inner surfaces of the grooved shaft sleeves, and the outer grooves and the inner grooves are communicated through the through holes. The grease can accurately and sufficiently reach the shaft sleeve, accumulation of the grease is avoided, the lubricating effect is improved, and the failure rate of abrasion and channeling of the shaft sleeve is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of boom and bucket rods, and particularly relates to a bucket rod rear seat 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] Excavators are one of the main types of engineering construction machinery. The dipper arm, as an important part of the excavator's working device, is equipped with multiple pin-shaft and sleeve matching structures to complete the entire excavation action. The quality of the pin-shaft and sleeve lubrication will directly affect the quality and efficiency of the entire excavator's work.

[0004] Currently, the industry's mainstream lubrication system for boom rear seats uses a round steel pipe to feed grease into a cylinder in the center of the rear seat. This system then distributes grease from the cylinder to the sleeves on either side. This solution causes grease to accumulate in the cylinder, deteriorating over time. Newly injected grease is then not evenly distributed to the sleeves on either side, leading to lubrication failure. This poor lubrication often leads to sleeve wear and push-through, delaying project progress. Utility Model Content

[0005] In view of the above problems, the utility model provides a boom rear seat lubrication structure, which can ensure that grease can reach the shaft sleeve accurately and in sufficient quantities, avoid grease accumulation, improve lubrication effect, and reduce shaft sleeve wear and sleeve failure rate.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A boom rear seat lubrication structure comprises a non-porous cylinder, a first rear seat being provided at one end of the non-porous cylinder and a second rear seat being provided at the other end; oil passages being provided on the first rear seat and the second rear seat, and the oil passages on the first rear seat and the second rear seat being symmetrically arranged; slotted bushings being provided in the first rear seat and the second rear seat, an outer groove being provided on an outer surface of the slotted bushing, a through hole being provided on the outer groove, an inner groove being provided on an inner surface of the slotted bushing, and the through hole connecting the outer groove and the inner groove.

[0008] Furthermore, the oil channel is arranged obliquely, and a threaded hole is opened at the end of the oil channel, and the threaded hole is used to assemble the oil cup and the oil pipeline.

[0009] Furthermore, the first rear seat and the second rear seat are welded to the non-porous cylinder, a first side plate is provided at the upper end of the first rear seat, and a second side plate is provided at the upper end of the second rear seat.

[0010] Furthermore, the first side plate is welded to the first rear seat, and the second side plate is welded to the second rear seat.

[0011] Furthermore, a bottom plate is provided at the lower end of the non-porous cylinder, one end of the bottom plate is located at the lower end of the first rear seat, and the other end of the bottom plate is located at the lower end of the second rear seat.

[0012] Furthermore, one end of the bottom plate is welded to the first rear seat, and the other end of the bottom plate is welded to the second rear seat.

[0013] Furthermore, the first rear seat, the second rear seat, the first side panel, the second side panel and the bottom panel are integrally welded to form a box structure.

[0014] Furthermore, a plurality of through holes are arranged at intervals.

[0015] Furthermore, the outer groove is located in the middle of the slotted sleeve, the inner groove is located in the middle of the slotted sleeve, and a dust ring is provided on the slotted sleeve.

[0016] Furthermore, the surface of the slotted sleeve is provided with a plurality of circular holes, and the plurality of circular holes are distributed at both ends of the outer groove.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are:

[0018] The utility model is provided with a first rear seat and a second rear seat, a slotted shaft sleeve is arranged in the first rear seat and the second rear seat, and an inner groove, an outer groove and a through hole are arranged on the slotted shaft sleeve. When performing lubrication maintenance, oil is respectively filled in the oil cups on both sides of the rear seat. The grease flows from the oil cup through the oil channel directly to the outer groove of the slotted shaft sleeve, enters the inner groove through the through hole, and is evenly transported to the inner diameter of the slotted shaft sleeve, thereby achieving better lubrication effect.

[0019] Separate lubrication channels are designed for the first and second rear seats, enabling independent lubrication and control. The slotted sleeve features an outer groove, an inner groove, and a through-hole in the center to transfer grease from the outside to the inner mating surface. This squeezes out old oil from the center to the ends, ensuring that qualified grease is always present within the slotted sleeve mating surfaces. This significantly improves the lubrication performance of the slotted sleeve and reduces sleeve wear and slippage. 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 This is a schematic diagram of the installation position of the lubrication structure of the utility model;

[0022] Figure 2 It is a cross-sectional view of the lubrication structure of the utility model;

[0023] Figure 3This is a structural diagram of the slotted sleeve of the utility model;

[0024] In the figure: 1, first rear seat; 2, second rear seat; 3, oil channel; 4, threaded hole; 5, slotted sleeve; 51, outer groove; 52, inner groove; 53, through hole; 6, dust ring; 7, non-hole cylinder; 8, first side plate; 9, second side plate; 10, bottom plate. DETAILED DESCRIPTION

[0025] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation 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] The current mainstream lubrication structure of the rear seat of the bucket arm is to input grease into the cylinder in the middle of the rear seat through a round steel pipe, and then input grease from the cylinder to the shaft sleeves on both sides for lubrication. This method easily causes grease accumulation, resulting in poor lubrication in the later stage. Figure 1 The figure shows the installation position of the lubrication structure of the present invention, which is installed at the rear seat of the bucket arm.

[0027] The utility model is described in detail below with reference to the accompanying drawings. The embodiment discloses a rear seat lubrication structure of the bucket arm, such as Figure 2 As shown, it includes a non-porous cylinder 7, a first rear seat 1 is provided at one end of the non-porous cylinder 7, and a second rear seat 2 is provided at the other end; oil passages 3 are provided on the first rear seat 1 and the second rear seat 2, and the oil passages 3 on the first rear seat 1 and the second rear seat 2 are symmetrically arranged; a slotted bushing 5 is provided in the first rear seat 1 and the second rear seat 2, and an outer groove 51 is provided on the outer surface of the slotted bushing 5, a through hole 53 is provided on the outer groove 51, and an inner groove 52 is provided on the inner surface of the slotted bushing 5, and the through hole 53 connects the outer groove 51 and the inner groove 52.

[0028] A slotted sleeve 5 is provided in the first rear seat 1 and the second rear seat 2, and an inner groove 52, an outer groove 51 and a through hole 53 are provided on the slotted sleeve 5. During lubrication maintenance, oil is added to the oil cups on both sides of the rear seat respectively. The grease flows from the oil cup through the oil channel 3 directly to the outer groove 51 of the slotted sleeve 5, passes through the through hole 53 to enter the inner groove 52 and is evenly transported to the inner diameter of the slotted sleeve 5, thereby achieving better lubrication. The first rear seat 1 and the second rear seat 2 are designed with separate lubrication oil channels 3 to achieve separate lubrication and separate control. The slotted sleeve 5 is designed with an outer groove 51, an inner groove 52 and a through hole 53 in the middle position to transport grease from the outside to the internal mating surface. The old oil can be squeezed out from the middle to both ends, ensuring that qualified grease is always kept in the mating surface of the slotted sleeve 5. This can greatly improve the lubrication effect of the slotted sleeve 5 and reduce the failure rate of sleeve wear and bushing.

[0029] The oil channel 3 is arranged at an angle, with a threaded hole 4 at its end for mounting the oil cup and oil pipeline. During oiling, the oil pipeline and oil cup are installed at the threaded hole 4 at the end of the oil channel 3. The angled arrangement of the oil channel 3 allows the grease to flow naturally into the slotted bushing 5. The symmetrical arrangement of the oil channel 3 improves oiling efficiency, allowing for separate lubrication of the two rear seats and enhancing lubrication effectiveness.

[0030] The first and second rear seats 1 and 2 are welded to the imperforate cylinder 7. A first side panel 8 is provided at the upper end of the first rear seat 1, and a second side panel 9 is provided at the upper end of the second rear seat 2. The first side panel 8 is welded to the first rear seat 1, and the second side panel 9 is welded to the second rear seat 2. A bottom panel 10 is provided at the lower end of the imperforate cylinder 7, with one end of the bottom panel 10 positioned at the lower end of the first rear seat 1, and the other end of the bottom panel 10 positioned at the lower end of the second rear seat 2. One end of the bottom panel 10 is welded to the first rear seat 1, and the other end of the bottom panel 10 is welded to the second rear seat 2. The first rear seat 1, second rear seat 2, first side panel 8, second side panel 9, and bottom panel 10 are welded together to form a box structure.

[0031] The through holes 53 are arranged at intervals. The through holes 53 can quickly allow grease to enter the slotted sleeve 5 from outside the slotted sleeve 5, thereby improving the efficiency of oil injection. The surface of the slotted sleeve 5 is provided with a plurality of circular holes, and the plurality of circular holes are distributed at both ends of the outer groove 51.

[0032] like Figure 2 As shown, the outer groove 51 is located in the middle of the slotted sleeve 5, the inner groove 52 is located in the middle of the slotted sleeve 5, and a dust ring 6 is provided on the slotted sleeve 5. The function of the dust ring 6 is to prevent external dust from entering the mating surface inside the sleeve, to avoid lubricating oil contamination and affecting the pin-sleeve fit.

[0033] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, 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 present invention.

Claims

1. A bucket arm rear seat lubrication structure, characterized in that: The invention comprises a non-porous cylinder, wherein a first rear seat is provided at one end of the non-porous cylinder, and a second rear seat is provided at the other end; oil passages are provided on the first rear seat and the second rear seat, and the oil passages on the first rear seat and the second rear seat are symmetrically arranged; slotted bushings are provided in the first rear seat and the second rear seat, and an outer groove is provided on the outer surface of the slotted bushing, a through hole is provided on the outer groove, and an inner groove is provided on the inner surface of the slotted bushing, and the through hole connects the outer groove and the inner groove.

2. The arm rear seat lubrication structure according to claim 1, characterized in that: The oil channel is arranged obliquely, and a threaded hole is provided at the end of the oil channel. The threaded hole is used for assembling the oil cup and the oil pipeline.

3. The arm rear seat lubrication structure according to claim 1, characterized in that: The first rear seat and the second rear seat are welded to the non-porous cylinder. A first side plate is provided at the upper end of the first rear seat, and a second side plate is provided at the upper end of the second rear seat.

4. The arm rear seat lubrication structure according to claim 3, characterized in that: The first side plate is welded to the first rear seat, and the second side plate is welded to the second rear seat.

5. The arm rear seat lubrication structure according to claim 4, characterized in that: A bottom plate is provided at the lower end of the non-porous cylinder, one end of the bottom plate is located at the lower end of the first rear seat, and the other end of the bottom plate is located at the lower end of the second rear seat.

6. The arm rear seat lubrication structure according to claim 5, characterized in that: One end of the bottom plate is welded to the first rear seat, and the other end of the bottom plate is welded to the second rear seat.

7. The arm rear seat lubrication structure according to claim 6, characterized in that: The first rear seat, the second rear seat, the first side plate, the second side plate and the bottom plate are integrally welded to form a box structure.

8. The arm rear seat lubrication structure according to claim 1, characterized in that: A plurality of through holes are arranged at intervals.

9. The arm rear seat lubrication structure according to claim 1, characterized in that: The outer groove is located in the middle of the slotted shaft sleeve, the inner groove is located in the middle of the slotted shaft sleeve, and a dust ring is sleeved on the slotted shaft sleeve.

10. The arm rear seat lubrication structure according to claim 1, characterized in that: The surface of the slotted sleeve is provided with a plurality of circular holes, and the plurality of circular holes are distributed at both ends of the outer groove.

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