Underwater operation bucket rod of excavator

Abstract

According to the underwater operation bucket rod of the excavator, a traditional hydraulic oil cylinder is changed into a reverse driving mode through adjustment, so that a piston rod is far away from a bucket, and the phenomenon that the piston rod exposed outside is corroded or water enters an oil cylinder due to corrosion of an oil seal is avoided; according to the technical scheme, the bucket rod comprises a bucket rod body, a bucket front fork and a bucket oil cylinder. A bucket rod oil cylinder hinge seat is arranged at one end of the bucket rod body, a bucket hinge seat is arranged at the other end of the bucket rod body, and a bucket oil cylinder is further arranged on the bucket rod body. A bucket oil cylinder hinge seat is arranged between the bucket rod oil cylinder hinge seat and the bucket hinge seat and close to the bucket rod oil cylinder hinge seat, the bucket oil cylinder hinge seat is connected with the end of a piston rod of the bucket oil cylinder, and the piston rod is arranged far away from the bucket hinge seat. A bucket front fork hinge seat is arranged between the bucket rod oil cylinder hinge seat and the bucket hinge seat and close to one end of the bucket hinge seat, a bucket front fork is hinged to the bucket front fork hinge seat, and the end of the bucket oil cylinder is hinged to the bucket front fork.

Description

Technical Field

[0001] The utility model relates to the field of excavator equipment, in particular to a boom for underwater operation of an excavator. Background Technique

[0002] The statements in this part only provide background technical information related to the utility model, and do not necessarily constitute prior art.

[0003] The working conditions of excavators are harsh. The main components that are in direct contact with the medium during the excavation process are affected by the complex working environment. During the excavation process, it often encounters underground water seepage or sewage pipes, which has a greater impact on the excavator. The main influencing factors include the corrosion of the excavator's forearm and hydraulic cylinder, and the problem of water ingress into the cylinder due to the long-term corrosion of the hydraulic cylinder;

[0004] In the prior art, the excavator bucket often encounters working scenarios of underwater operation. The existing structural forms of excavators mostly have the hydraulic cylinder fixed and the piston rod as the moving part, resulting in the piston rod being too close to the bucket, causing the piston rod to be often submerged in water, leading to the corrosion of the piston rod and the damage of the oil seal, and further resulting in the problem of water ingress into the hydraulic cylinder. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a boom for underwater operation of an excavator. By adjusting the traditional hydraulic cylinder to a reverse drive form, the piston rod is kept away from the bucket, avoiding the corrosion of the piston rod exposed outside or the water ingress into the cylinder due to the corrosion of the oil seal, thereby prolonging the service life of the cylinder.

[0006] In order to achieve the above object, the utility model is realized by the following technical solutions:

[0007] In a first aspect, the utility model provides a boom for underwater operation of an excavator, including a boom body, a bucket front fork, and a bucket cylinder;

[0008] One end of the boom body is provided with a boom cylinder hinge seat, and the other end is provided with a bucket hinge seat for connecting the bucket;

[0009] The boom body is also provided with a bucket cylinder; between the boom cylinder hinge seat and the bucket hinge seat, and close to the boom cylinder hinge seat, a bucket cylinder hinge seat is provided, and the bucket cylinder hinge seat is connected to the end of the piston rod of the bucket cylinder, and the piston rod is arranged away from the bucket hinge seat;

[0010] Between the boom cylinder hinge seat and the bucket hinge seat, and at one end close to the bucket hinge seat, a bucket front fork hinge seat is provided. The bucket front fork is hinged to the bucket front fork hinge seat, and the end of the bucket cylinder is hinged to the bucket front fork.

[0011] Furthermore, a boom hinge seat is also provided on the stick body, and the boom hinge seat is arranged close to the bucket cylinder hinge seat.

[0012] Furthermore, the stick body is composed of a cover plate, a V-shaped bottom plate and two side plates. The side plates are steel plates in an obtuse triangle shape. The long sides of the side plates are welded to the cover plate as a whole, and the two short sides of the side plates are welded to the V-shaped bottom plate as a whole.

[0013] Furthermore, the bucket cylinder hinge seat is arranged on the cover plate, and the bucket hinge seat, the bucket front fork hinge seat and the boom hinge seat are all arranged vertically through the two side plates.

[0014] Furthermore, the bucket front fork is composed of two rocker arms, namely a first rocker arm and a second rocker arm. One end of the first rocker arm is connected to the stick body through the bucket front fork hinge seat. The other end of the first rocker arm is hinged to one end of the second rocker arm, and both are hinged to the bucket cylinder.

[0015] Furthermore, the other end of the second rocker arm is hinged to the bucket.

[0016] Furthermore, the stick body is hinged to the bucket through the bucket hinge seat.

[0017] Furthermore, the bucket cylinder includes a cylinder housing and a piston rod. The cylinder housing end is connected to the bucket front fork, and the piston rod end is connected to the bucket cylinder hinge seat.

[0018] Furthermore, a metal hydraulic oil pipe is provided on the cylinder housing, and the metal hydraulic oil pipe is fixed to the cylinder housing through a buckle.

[0019] Furthermore, the interface of the metal hydraulic oil pipe is arranged at the gland of the bucket cylinder and is connected to the hydraulic oil hose. The length of the hydraulic oil hose is set with a surplus.

[0020] The beneficial effects of the above-mentioned utility model are as follows:

[0021] By adjusting the traditional hydraulic cylinder into a reverse drive form, and by adopting the method of installing the cylinder housing part close to the bucket, when the bucket cylinder works, the bucket front fork is driven by the relative movement of the cylinder housing with respect to the piston rod, and the piston rod is arranged away from the bucket. When the bucket enters the working area for excavation work, the medium in the working area, such as water and other substances, will come into contact with the bucket and the cylinder housing at the end of the stick connecting the bucket, and cannot come into contact with the piston rod of the bucket cylinder. Whether it is groundwater or underground sewage pipes, they cannot damage the bucket cylinder, thereby avoiding the corrosion of the piston rod exposed outside or the water ingress of the cylinder due to the corrosion of the oil seal. At the same time, the oil leakage problem between the piston rod and the cylinder housing is avoided. Brief Description of the Drawings

[0022] The attached drawings forming a part of this utility model are used to provide a further understanding of this utility model. The schematic embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation to this utility model.

[0023] Figure 1 It is the front view of the stick structure of this utility model;

[0024] Figure 2 It is the top view of the stick structure of this utility model.

[0025] In the figures: 1 is the stick cylinder hinge seat; 2 is the bucket cylinder hinge seat; 3 is the piston rod; 4 is the buckle; 5 is the cylinder housing; 6 is the metal hydraulic oil pipe; 7 is the first rocker; 8 is the second rocker; 9 is the bucket hinge seat; 10 is the bucket front fork hinge seat; 11 is the stick body; 12 is the boom hinge seat. Detailed Description of the Preferred Embodiment

[0026] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of this utility model. Unless otherwise specified, all technical and scientific terms used in this utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs.

[0027] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this utility model. As used herein, unless this utility model otherwise clearly indicates, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof;

[0028] An embodiment of this utility model discloses a stick for an excavator to operate underwater, as Figure 1-2 shown, which includes a stick body 11, a bucket front fork, and a bucket cylinder; one end of the stick body 11 is provided with a stick cylinder hinge seat 1, and the other end is provided with a bucket hinge seat 9; a bucket cylinder is also provided on the stick body 11; a bucket cylinder hinge seat 2 is provided at one end close to the stick cylinder hinge seat 1, and the bucket cylinder hinge seat 2 is hinged to the end of the piston rod 3 of the bucket cylinder. The piston rod 3 is arranged away from the bucket. A bucket front fork hinge seat 10 is provided at one end close to the bucket hinge seat 9. The bucket front fork is hinged to the bucket front fork hinge seat 10, and the end of the bucket cylinder is hinged to the bucket front fork.

[0029] The boom body 11 is also provided with a boom hinge seat 12, and the boom hinge seat 12 is arranged close to the bucket cylinder hinge seat 1; the boom body 11 includes a cover plate, a V-shaped bottom plate and two side plates. The bucket cylinder hinge seat 2 is arranged on the cover plate. The bucket hinge seat 9, the bucket front fork hinge seat 10 and the boom hinge seat 12 are all arranged vertically through the two side plates. The side plates are steel plates in the shape of an obtuse triangle. The long sides of the side plates are welded to the cover plate as a whole, and the two short sides of the side plates are welded to the V-shaped bottom plate as a whole, so that the boom body 11 is in a structure similar to an obtuse triangular prism, making the structural stability of the boom body 11 stronger.

[0030] The bucket front fork consists of two rocker arms, namely the first rocker arm 7 and the second rocker arm 8. One end of the first rocker arm 7 is connected to the boom body 11 through the bucket front fork hinge seat 10. The other end of the first rocker arm 7 is hinged to one end of the second rocker arm 8, and both are hinged to the bucket cylinder. The other end of the second rocker arm 8 is hinged to the bucket; the boom body 11 is hinged to the bucket through the bucket hinge seat 9, so that the part of the cylinder housing 5 is installed close to the bucket. That is to say, the piston rod 3 of the bucket cylinder is hinged to the bucket cylinder hinge seat 2, and the piston rod 3 does not move relative to the boom body 11. When the bucket cylinder works, under the drive of hydraulic oil, the cylinder housing 5 moves relative to the piston rod 3, and then the cylinder housing 5 moves relative to the boom body 11, so as to drive the bucket front fork to move through the end of the cylinder housing 5. Since the problem of oil leakage between the piston rod 3 and the cylinder housing 5 is avoided, the surface of the piston rod 3 is a smooth surface processed tightly. However, the piston rods 3 of the traditional excavator bucket cylinders are all arranged close to the bucket. Due to the relatively harsh working environment of the excavator, through the idea of reverse drive of the hydraulic cylinder, the piston rod 3 is far away from the bucket, avoiding the corrosion of the piston rod 3 exposed outside or the water ingress of the cylinder due to the corrosion of the oil seal.

[0031] The bucket cylinder is a reverse drive cylinder. The piston rod 3 of the reverse drive cylinder is a fixed part, and the cylinder housing 5 is a moving part; a metal hydraulic oil pipe 6 is arranged on the cylinder housing 5. The metal hydraulic oil pipe 6 is fixed to the cylinder housing 5 through a buckle 4. The interface of the metal hydraulic oil pipe 6 is arranged at the gland of the bucket cylinder and is connected to the hydraulic oil hose. The length of the hydraulic oil hose is set with a margin to ensure continuous oil supply during the movement of the cylinder housing 5.

[0032] Working principle:

[0033] When the working bucket is in operation, the driver controls the hydraulic system through the control handle. The hydraulic oil enters the metal hydraulic oil pipe 6 through the hydraulic oil hose and then enters the bucket cylinder. When it is necessary to retract the bucket, the hydraulic oil enters the bucket cylinder from the bottom oil inlet of the bucket cylinder. Under the action of the hydraulic oil, the cylinder housing 5 moves towards the direction close to the bucket hinge seat 9. At this time, the piston rod 3 does not move relative to the stick body 11. At this time, the bucket enters the working area for excavation work. The media in the working area, such as water and other substances, will come into contact with the bucket and the cylinder housing 5 at the end of the stick connecting the bucket, but cannot come into contact with the piston rod 3 of the bucket cylinder. An anti-corrosion layer is coated on the housing, and neither alkaline media nor acidic media can damage the bucket cylinder, thereby avoiding corrosion of the piston rod 3 exposed outside or water ingress into the cylinder due to corrosion of the oil seal.

[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An underwater working boom of an excavator, characterized in that It includes a stick body, a bucket front fork, and a bucket cylinder; One end of the stick body is provided with a stick cylinder hinge seat, and the other end is provided with a bucket hinge seat for connecting the bucket; The stick body is also provided with a bucket cylinder; between the stick cylinder hinge seat and the bucket hinge seat, and near the stick cylinder hinge seat, a bucket cylinder hinge seat is provided, and the bucket cylinder hinge seat is connected to the piston rod end of the bucket cylinder, and the piston rod is arranged away from the bucket hinge seat; Between the stick cylinder hinge seat and the bucket hinge seat, and at one end near the bucket hinge seat, a bucket front fork hinge seat is provided, the bucket front fork is hinged to the bucket front fork hinge seat, and the end of the bucket cylinder is hinged to the bucket front fork.

2. The excavator underwater working boom according to claim 1, wherein, The stick body is also provided with a boom hinge seat, and the boom hinge seat is arranged near the stick cylinder hinge seat.

3. The underwater working boom of an excavator according to claim 2, wherein, The stick body is composed of a cover plate, a V-shaped bottom plate, and two side plates. The side plates are steel plates in an obtuse triangle shape. The long sides of the side plates are welded to the cover plate as a whole, and the two short sides of the side plates are welded to the V-shaped bottom plate as a whole.

4. The underwater working boom of an excavator according to claim 3, characterized in that, The bucket cylinder hinge seat is arranged on the cover plate, and the bucket hinge seat, the bucket front fork hinge seat, and the boom hinge seat are all arranged vertically through the two side plates.

5. The underwater working boom of an excavator according to claim 1, characterized in that, The bucket front fork is composed of two rocker arms, namely a first rocker arm and a second rocker arm. One end of the first rocker arm is connected to the stick body through the bucket front fork hinge seat. The other end of the first rocker arm is hinged to one end of the second rocker arm, and both are hinged to the bucket cylinder.

6. The underwater working boom of an excavator according to claim 5, characterized in that, The other end of the second rocker arm is hinged to the bucket.

7. The underwater working boom of an excavator according to claim 1, characterized in that, The stick body is hinged to the bucket through the bucket hinge seat.

8. The underwater working boom of an excavator according to claim 1, characterized in that, The bucket cylinder includes a cylinder housing and a piston rod. The cylinder housing end is connected to the bucket front fork, and the piston rod end is connected to the bucket cylinder hinge seat.

9. The underwater working boom of an excavator according to claim 8, characterized in that, The cylinder housing is provided with a metal hydraulic oil pipe, and the metal hydraulic oil pipe is fixed to the cylinder housing through a buckle.

10. An excavator underwater operation boom as described in claim 9, characterized in that, The interface of the metal hydraulic oil pipe is arranged at the gland of the bucket cylinder and is connected to a hydraulic oil hose, and the length of the hydraulic oil hose is set with a surplus.

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