Quick-change device pipeline arrangement structure, arm and excavator

Abstract

The present application relates to excavator technical field, especially to a kind of quick-change device pipeline arrangement structure, bucket rod and excavator.Pipeline arrangement structure includes hose and fixed seat;The fixed seat is installed in the front end of bucket rod outer top surface, and the hose extends from the rear end of bucket rod outer top surface to front end and is installed on the fixed seat, and the hose is penetrated from the front end surface of fixed seat to the rear end surface of fixed seat, then is bent to form a ring and is connected to quick-change device on quick-change device side.The present application solves the problem of hose extrusion damage and the influence of sand and stone splashing on hose life.

Description

Technical Field

[0001] This invention relates to the field of excavator technology, and more particularly to a quick-change device pipeline layout structure, stick, and excavator. Background Technology

[0002] In traditional excavator operation, changing excavating tools (such as buckets and drill bits) typically requires stopping the machine and undergoing a cumbersome disassembly and installation process. This method is time-consuming, labor-intensive, increases equipment downtime, and reduces operational efficiency. To address this issue, quick-change devices have been researched and developed. These devices aim to enable rapid, safe, and accurate tool changes. Their design takes into account the excavator's structural characteristics, the operating environment, and the operator's needs to ensure a smooth tool change process while minimizing downtime.

[0003] Currently, in the hydraulic oil quick-change pipeline of the quick-change device on a certain 13T excavator, the hose connecting the quick-change device is arranged on the left and right outer sides of the stick. This causes the hose to be easily squeezed at the maximum stroke of the quick-change device during operation, causing the hose to be subjected to shear stress. Furthermore, the hose is arranged on the outside, making it susceptible to sand and gravel splashes in harsh working conditions, which affects the hose's lifespan. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a quick-change device pipeline layout structure to solve the problems of hose compression damage and the impact of sand and gravel splashes on hose life.

[0005] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0006] A quick-change device piping arrangement structure is disclosed. The quick-change device is rotatably mounted on the boom. Along the length of the boom, the end where the quick-change device is mounted is the front, and the end away from the quick-change device is the rear. The piping arrangement structure includes a flexible hose and a fixed base. The fixed base is mounted on the front end of the outer top surface of the boom. The flexible hose extends from the rear end of the outer top surface of the boom to the front end and is mounted on the fixed base. The flexible hose passes through the front end face of the fixed base to the rear end face of the fixed base, and then bends towards the rear end and towards the quick-change device to form a ring and connect to the quick-change device.

[0007] Optionally, the fixed base includes a support plate and a cross plate, the support plate and the cross plate are perpendicular to each other, the cross plate is installed on the outer top surface of the stick, the support plate is perpendicular to the outer top surface of the stick, and the hose is installed on the support plate.

[0008] Optionally, the outer top surface of the stick is provided with a boss, and the cross plate of the fixing seat can be detachably installed on the outer side of the boss.

[0009] Optionally, the hose includes a first hose and a second hose, the first hose is in communication with the second hose, the rear end of the first hose is mounted on the support rod of the fixed base, the second hose is in the form of a bent ring, one end of the second hose is in communication with the rear end of the first hose, and the other end is connected to the quick-change device.

[0010] Optionally, the piping arrangement structure also includes a conversion joint, which is mounted on the support plate of the fixed base. The piping path of the conversion joint is in the shape of a "U". The rear end of the first flexible hose is installed at one end of the conversion joint, and the second flexible hose is installed at the other end of the conversion joint.

[0011] Optionally, the adapter can be detachably mounted on the support plate of the fixed base; the adapter can be an integral connector or a combination of separate connectors.

[0012] Optionally, the first hose is divided into a left tube and a right tube, which are respectively installed on the connector from the left and right sides of the fixing seat.

[0013] Optionally, the quick-change device is provided with a pin on the side facing the boom, and the second hose, after being bent, is located on the side of the pin facing the boom.

[0014] This invention also provides a boom, with a quick-change device pipeline arrangement structure as described above provided at the front end of the boom.

[0015] This invention also provides an excavator, including the boom as described above.

[0016] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0017] The pipeline arrangement structure of the present invention arranges a fixed seat at the front end of the boom, so that the hose runs in the opposite direction at the fixed seat and then bends towards the quick-change device to form a ring. The hose connecting the quick-change device is then arranged inside the boom. This not only meets the length requirements of the pipeline when the quick-change device rotates, but also prevents it from hanging off the left and right sides of the boom to the outside, avoiding the impact of squeezing the hose and sand splashing, and extending the service life of the hose.

[0018] Advantages of additional aspects of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the pipeline arrangement structure provided in the embodiment of the present invention on the quick-change device;

[0021] Figure 2 This is a schematic diagram of the quick-change device in the open state provided in an embodiment of the present invention;

[0022] Figure 3 This is a cross-sectional schematic diagram of the quick-change device provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the first angle of the boom provided in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the second angle of the stick provided in an embodiment of the present invention;

[0025] In the diagram: 1. Boom; 11. Outer top surface; 2. Quick-change device; 21. Pin; 3. Piping layout structure; 31. Fixed base; 311. Support plate; 312. Horizontal plate; 32. Adaptor joint; 33. Flexible hose; 331. First flexible hose; 3311. Left hose; 3312. Right hose; 332. Second flexible hose; 34. Rigid pipe;

[0026] The distances or dimensions between parts have been exaggerated to show their positions; the diagram is for illustrative purposes only. Detailed Implementation

[0027] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. The terms "installed," "connected," "linked," "fixed," etc., in this invention should be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral structure; they may refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they may refer to an internal connection between two elements, or the interaction between two elements. Those of ordinary skill in the art can understand the specific meaning of the terms in this invention according to the specific circumstances.

[0028] Terminology Explanation:

[0029] Quick-change device: A quick-change device for excavators is a device used for quickly changing excavator parts or tools. It typically includes a specially designed connection system that allows excavator operators to quickly change the required parts, such as buckets, drill bits, or other working devices, without spending excessive time and effort. This improves excavator operating efficiency, reduces downtime, increases flexibility, and adapts to the needs of different working scenarios.

[0030] Boom: The boom and stick refer to a working device on an excavator, also commonly called the main boom and the secondary boom. Their main function is to control the digging and loading actions of the bucket. The arm connected to the frame is longer, hence the common name "main boom," and its technical term is boom; the arm connected to the bucket is shorter, hence the common name "secondary boom," and its technical term is stick. Therefore, they are commonly referred to as the main boom and secondary boom.

[0031] As described in the background section, the hoses of existing quick-change devices are arranged on the left and right outer sides of the boom. This makes the hoses prone to compression during operation at the maximum stroke of the quick-change device, subjecting them to shear stress. Furthermore, the outer placement of the hoses makes them susceptible to damage from sand and gravel splashes under harsh working conditions, affecting their lifespan. To address the problems of hose compression damage and reduced hose lifespan due to sand and gravel splashes, this invention proposes a novel quick-change device piping arrangement structure.

[0032] like Figure 1 As shown, the quick-change device 2 is rotatably mounted on the boom 1. Along the length of the boom 1, the end where the quick-change device 2 is mounted is considered the front, and the end furthest from the quick-change device 2 is considered the rear. Figure 2 , Figure 3 As shown, the pipeline arrangement structure 3 includes a flexible hose 33 and a fixed base 31. The flexible hose 33 is a snakeskin hose with a certain degree of bending freedom. The fixed base 31 is installed at the front end of the outer top surface 11 of the boom 1. The flexible hose 33 extends from the rear end of the outer top surface 11 of the boom 1 to the front end and is installed on the fixed base 31. The flexible hose 33 passes through the front end face of the fixed base 31 to the rear end face of the fixed base 31, and then bends towards the rear end and towards the quick-change device 2 to form a ring (e.g., Figure 1 The quick-change device 2 shown is connected to the quick-change device (in the rotated-back state). In addition, a rigid pipe 34 is provided on the outer top surface 11 of the boom 1. The rigid pipe 34 is connected to the flexible hose 33 to form the oil passage of the quick-change device 2.

[0033] In this embodiment, the pipeline arrangement structure 3 arranges a fixed seat 31 at the front end of the boom 1, so that the hose 33 runs in the opposite direction at the fixed seat 31 and then bends towards the quick-change device 2 to form a ring. This allows the hose 33 connected to the quick-change device 2 to be arranged inside the boom 1, which not only meets the length requirements of the pipeline when the quick-change device 2 rotates, but also prevents it from hanging down from the left and right sides of the boom 1 to the outside, avoiding the impact of squeezing the hose 33 and sand and gravel splashing, thus extending the service life of the hose 33.

[0034] like Figure 4 , Figure 5 As shown, the fixed base 31 is a bent plate, which is bent to form a support plate 311 and a cross plate 312. The support plate 311 and the cross plate 312 are perpendicular to each other. The cross plate 312 is installed on the outer top surface 11 of the stick 1. The support plate 311 is perpendicular to the outer top surface 11 of the stick 1. The hose 33 is installed on the support plate 311.

[0035] The fixing seat 31 can be directly fixed to the outer top surface 11 of the support rod. For ease of maintenance and replacement, a detachable installation is preferred. In this embodiment, a boss is provided on the outer top surface 11 of the boom 1. The boss can be fixed to the outer top surface 11 of the boom 1 by welding. The horizontal plate 312 of the fixing seat 31 can be detachably installed on the outer side of the boss. For example, a threaded hole can be provided on the boss, and the horizontal plate 312 of the fixing seat 31 can be installed in the threaded hole of the boss using screws. The boss avoids directly drilling holes in the boom 1, reducing the impact on the strength of the boom 1.

[0036] The hose 33 can be a single hose 33, or it can be a split hose 33. In this embodiment, as... Figure 3 As shown, the hose 33 includes a first hose 331 and a second hose 332. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0037] The first hose 331 is connected to the second hose 332. The rear end of the first hose 331 is mounted on the support rod of the fixed base 31. The second hose 332 is a bent ring, with one end connected to the rear end of the first hose 331 and the other end connected to the quick-change device 2. By setting the hoses 33 as interconnected split hoses 33, the layout and installation of pipelines are more convenient, and replacement is easier if the hoses 33 are damaged.

[0038] The flexible hose 33 can be directly fixed to the fixing base 31; of course, it is understood that other structures can also be used for simple fixing. In this embodiment, such as... Figure 4 , Figure 5 As shown, the pipeline arrangement structure 3 also includes a conversion joint 32. The conversion joint 32 is installed on the support plate 311 of the fixed base 31. The pipeline path of the conversion joint 32 is in a U-shape, that is, the inlet and outlet of the conversion joint 32 are in the same direction. The rear end of the first hose 331 is installed at one end of the conversion joint 32, and the second hose 332 is installed at the other end of the conversion joint 32. The conversion joint 32 facilitates the connection between the first hose 331 and the second hose 332, and also makes it easy to install the hose 33 on the fixed base 31, while also facilitating the adjustment of the direction of the hose 33. By using the fixed base 31 and the conversion joint 32 at the front end of the boom 1, the hose 33 connecting the quick-change device 2 can be conveniently arranged on the inside of the boom 1, extending the service life of the hose 33.

[0039] The adapter 32 can be fixed to the base 31 by welding, or the adapter 32 can be detachably installed on the support plate 311 of the base 31 for easy maintenance and replacement. In addition, the adapter 32 can be a one-piece connector bent into a U-shape, or it can be composed of two separate connectors, such as two right-angle connectors welded together.

[0040] like Figure 4 , Figure 5 As shown, the first flexible hose 331 is divided into a left hose 3311 and a right hose 3312. In this embodiment, the left hose 3311 and the right hose 3312 are respectively installed on the connector from the left and right sides of the fixing base 31. That is, the hose enters from the left and right sides of the fixing base 31 and exits from the outside of the fixing base 31. Compared with the method of entering from the outside of the fixing base 31 and exiting from the left and right sides of the fixing base 31, this arrangement in this embodiment further ensures the activity area of ​​the second flexible hose 332, prevents the second flexible hose 332 from drooping to the left and right sides, and ensures the service life of the hose 33.

[0041] like Figure 3 As shown, the quick-change device 2 has a pin 21 on the side facing the boom 1, and the second hose 332, after being bent, is located on the side of the pin 21 facing the boom 1. The positional relationship between the second hose 332 and the pin 21 prevents the second hose 332 from drooping to the left or right and also prevents the second hose 332 from being pulled when the quick-change device 2 rotates.

[0042] Based on the above-described pipeline arrangement structure 3, this embodiment of the invention also provides a boom 1 and an excavator, wherein the boom 1 and the excavator are provided with the pipeline arrangement structure 3 described in the above embodiment. Since the above-described pipeline arrangement structure 3 has the above-described technical effects, the technical effects of the boom 1 and the excavator using the pipeline arrangement structure 3 can be found in the above embodiment.

[0043] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A quick-change device piping arrangement structure, wherein the quick-change device is rotatably mounted on the boom, with one end of the boom along its length designated as the front and the end furthest from the quick-change device as the rear, characterized in that... The pipeline arrangement structure comprises a flexible hose and a fixed seat; The fixed seat is mounted at the front end of the outer top surface of the dipper stick, the flexible hose extends from the rear end of the outer top surface of the dipper stick to the front end and is mounted on the fixed seat, the flexible hose penetrates from the front end surface of the fixed seat to the rear end surface of the fixed seat, then bends toward the rear end and toward one side of the quick-change device to form an annular shape connected to the quick-change device; arranging the flexible hose connected to the quick-change device on the inner side of the dipper stick not only meets the requirement for the length of the pipeline when the quick-change device rotates, but also prevents the pipeline from drooping to the outside from the left and right sides of the dipper stick; The flexible hose comprises a first flexible hose and a second flexible hose, the first flexible hose is communicated with the second flexible hose, the rear end of the first flexible hose is mounted on a support rod of the fixed seat, the second flexible hose is in a bent annular shape, one end of the second flexible hose is communicated with the rear end of the first flexible hose, and the other end is connected to the quick-change device.

2. The quick-change device piping arrangement structure as described in claim 1, characterized in that, The fixed seat comprises a support plate and a transverse plate, the support plate is perpendicular to the transverse plate, the transverse plate is mounted on the outer top surface of the dipper stick, the support plate is perpendicular to the outer top surface of the dipper stick, and the flexible hose is mounted on the support plate.

3. The quick-change device piping arrangement structure as described in claim 2, characterized in that, A convex platform is arranged on the outer top surface of the dipper stick, and the transverse plate of the fixed seat is detachably mounted on the outer side surface of the convex platform.

4. The quick-change device pipeline layout structure as described in claim 1, characterized in that, The pipeline arrangement structure further comprises a transfer joint, the transfer joint is mounted on the support plate of the fixed seat, a pipeline path of the transfer joint is in a C-shape, the rear end of the first flexible hose is mounted at one end of the transfer joint, and the second flexible hose is mounted at the other end of the transfer joint.

5. The quick-change device piping arrangement structure as described in claim 4, characterized in that, The transfer joint is detachably mounted on the support plate of the fixed seat; The transfer joint is an integrated joint or a combination of split joints.

6. The quick-change device pipeline layout structure as described in claim 4, characterized in that, The first flexible hose is divided into a left hose and a right hose, and the left hose and the right hose are respectively mounted on the joint from the left and right sides of the fixed seat.

7. The quick-change device piping arrangement structure as described in claim 4, characterized in that, A pin shaft is arranged on a side of the quick-change device facing the dipper stick, and the bent second flexible hose is located on a side of the pin shaft facing the dipper stick.

8. A pole, characterized in that, The quick-change device pipeline arrangement structure according to any one of claims 1 to 7 is provided at a front end of a dipper stick.

9. An excavator, characterized in that, Comprises the dipper stick according to claim 8.

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