Excavator and its twin bucket cylinder protection device

Abstract

This utility model discloses an excavator and its dual-bucket cylinder protection device. The dual-bucket cylinder protection device includes a protective cover connected to the bucket head via a first fixing component and a track connected to the cylinder via a second fixing component. The protective cover is positioned above the piston rod. Slide grooves are provided on both sides of the track. Sliding blocks matching the slide grooves are provided on the inner walls of both sides of the protective cover. The sliding blocks are slidably connected to the slide grooves. The first fixing component includes a first support frame fixed to both sides of the protective cover via a first fastener. A first fixing frame is fixedly connected below the first support frame via a third fastener. The second fixing component includes a second support frame fixed to the track via a second fastener. A second fixing frame is fixedly connected below the second support frame via a fourth fastener. This device effectively blocks mineral and rock fragments splashed in the mining environment, preventing the piston rod from being hit or scratched, achieving dynamic protection of the piston rod throughout its stroke, and significantly reducing the risk of surface damage.

Description

Technical Field

[0001] This utility model belongs to the field of excavator bucket protection technology, specifically relating to an excavator and its dual bucket cylinder protection device. Background Technology

[0002] In mining, large-scale infrastructure and other engineering operations, excavators have become core equipment due to their powerful digging capabilities. These excavators are usually equipped with a double bucket working device, which uses two sets of boom cylinders to drive the bucket to complete digging, loading and other operations. However, in actual working conditions, when the piston rod of the boom cylinder is extended, its bare rod part is completely exposed to the working environment. Due to the large amount of flying mineral and rock fragments in mines and other places, as well as the frequent collision risks, the surface of the piston rod is very easy to be hit and scratched.

[0003] In existing technologies, hydraulic cylinder protection for single-bucket excavators often employs simple protective covers or baffle structures. However, such devices are difficult to adapt to the layout of dual-bucket hydraulic cylinders. When dual-bucket excavators are working, the two sets of cylinders are symmetrically distributed and have complex movement trajectories. Traditional protective structures suffer from problems such as limited installation space and incomplete protection range, failing to provide effective protection for the piston rod extension section. When the piston rod surface is damaged, it can lead to cylinder seal failure, hydraulic oil leakage, and even cylinder jamming and abnormal operation, seriously affecting the operating efficiency and reliability of the equipment. Therefore, there is an urgent need for a hydraulic cylinder protection device for excavators and their dual-bucket excavators. Utility Model Content

[0004] To address some or all of the technical problems existing in the prior art, this utility model provides a double bucket cylinder protection device. The double bucket cylinder protection device is fixed to the bucket cylinders, and the two bucket cylinders are connected to the bucket head and the boom. Each bucket cylinder includes a cylinder barrel and a piston rod sleeved within the cylinder barrel. The double bucket cylinder protection device for excavators includes a protective cover connected to the bucket head via a first fixing component and a track connected to the cylinder barrel via a second fixing component. The protective cover is positioned above the piston rod.

[0005] The track has grooves on both sides, and the inner walls of the protective cover are provided with sliders that match the grooves. The sliders are slidably connected to the grooves.

[0006] The first fixing component includes a first support frame fixed to both sides of the protective cover by a first fastener, and a first fixing frame fixedly connected below the first support frame by a third fastener. The second fixing component includes a second support frame fixed to the track by a second fastener, and a second fixing frame fixedly connected below the second support frame by a fourth fastener.

[0007] Furthermore, in the above-mentioned double bucket cylinder protection device for excavators, two first support ears are provided at both ends of the bottom of the first support frame, and there is an arc transition between the two first support ears. Two first fixing ears are provided at both ends of the first fixing frame, and there is an arc transition between the two first fixing ears. The third fastener passes through the first support ears and the first fixing ears in sequence and is then fixed between the first support frame and the first fixing frame by a nut.

[0008] Furthermore, in the above-mentioned double bucket cylinder protection device for excavators, two second support ears are provided at both ends of the bottom of the second support frame, and there is an arc transition between the two second support ears. Two second fixing ears are provided at both ends of the second fixing frame, and there is an arc transition between the two second fixing ears. The fourth fastener passes through the second support ears and the second fixing ears in sequence and is then fixed between the second support frame and the second fixing frame by the nut.

[0009] In one specific embodiment, in the above-mentioned double bucket cylinder protection device for excavators, the number of the second fixing components is 2 to 6, and each second fixing component is evenly spaced on the outer periphery of the cylinder.

[0010] In one specific embodiment, in the above-mentioned double bucket cylinder protection device for excavators, the slide groove is a V-shaped slide groove, and the slider is a V-shaped slider.

[0011] In one specific embodiment, in the above-mentioned double bucket cylinder protection device for excavators, the slider is fixed to the inner walls of both sides of the protective cover by a fifth fastener.

[0012] On the other hand, the present invention also provides an excavator, which includes the above-mentioned double bucket cylinder protection device for excavators.

[0013] The protective device for the double bucket cylinder of an excavator according to this utility model has the following advantages and beneficial effects:

[0014] This device has a simple structure and is easy to assemble and disassemble. Through the cooperation between the protective cover and the track, when the piston rod extends, the protective cover slides along the track towards the bucket head, accurately covering the exposed bare rod part. When the piston rod retracts, the protective cover retracts synchronously, ensuring no interference during the movement. It effectively blocks mineral and rock fragments splashed in the mining environment, preventing the piston rod from being hit or scratched. It achieves dynamic protection for the piston rod throughout its entire stroke, significantly reducing the risk of surface damage, and has good practicality and adaptability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 in the following description are only for further understanding of the embodiments of this utility model and constitute a part of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0016] Figure 1 This is a structural schematic diagram of the double bucket cylinder protection device for excavators according to this utility model;

[0017] Figure 2 This is a schematic diagram showing the usage status of the double bucket cylinder protection device for excavators according to this utility model;

[0018] Figure 3 This is a schematic diagram of the bucket head structure in the double bucket cylinder protection device for excavators according to this utility model.

[0019] Figure 4 This is a schematic diagram of the slider structure in the double bucket cylinder protection device for excavators according to this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the first fixing component in the double bucket cylinder protection device for excavators according to this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the second fixing component in the double bucket cylinder protection device for excavators according to this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Protective cover, 11-Slide groove, 2-Railway, 21-Slider, 22-Fifth fastener, 3-First fixing component, 31-First fastener, 32-First support frame, 33-Third fastener, 34-First fixing frame, 35-First support ear plate, 36-First fixing ear plate, 4-Second fixing component, 41-Second fastener, 42-Second support frame, 43-Fourth fastener, 44-Second fixing frame, 45-Second support ear plate, 46-Second fixing ear plate, 5-Nut, 6-Washer, 100-Bucket cylinder, 101-Cylinder barrel, 102-Piston rod, 200-Bucket rod, 300-Bucket head. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] like Figures 1 to 6 As shown, this utility model discloses an excavator and its double bucket cylinder protection device.

[0026] On one hand, this utility model discloses a double bucket cylinder protection device for excavators. The double bucket cylinder protection device is fixed on the bucket cylinders 100. The two bucket cylinders 100 are connected to the bucket head 300 and the stick 200. The bucket cylinder 100 includes a cylinder barrel 101 and a piston rod 102 sleeved inside the cylinder barrel 101. The double bucket cylinder protection device for excavators includes a protective cover 1 connected to the bucket head 300 through a first fixing component 3 and a track 2 connected to the cylinder barrel 101 through a second fixing component 4. The protective cover 1 is disposed above the piston rod 102. The protective cover 1 adopts an arc-shaped cross-section design, and the coverage area is larger than the diameter of the piston rod 102. The track 2 has grooves 11 on both sides, and the inner walls of both sides of the protective cover 1 are provided with sliders 21 that match the grooves 11. The first fixing component 3 is connected to the slide 11; the first fixing component 3 includes a first support frame 32 fixed to both sides of the protective cover 1 by a first fastener 31, and a first fixing frame 34 fixedly connected below the first support frame 32 by a third fastener 33. The second fixing component 4 includes a second support frame 42 fixed to the track 2 by a second fastener 41, and a second fixing frame 44 fixedly connected below the second support frame 42 by a fourth fastener 43. In actual operation, the sliding cooperation between the protective cover 1 and the track 2 can ensure that the protective cover 1 can move flexibly according to the extension and retraction state of the piston rod 102. When the piston rod 102 extends, the protective cover 1 can slide quickly along the track 2 and cover the extended part of the piston rod 102 in time. When the piston rod 102 retracts, the protective cover 1 can retract synchronously. Throughout the process, a stable protective barrier is provided for the piston rod 102.

[0027] Furthermore, in the double bucket cylinder protection device for excavators of this utility model, two first support ear plates 35 are provided at both ends of the bottom of the first support frame 32, and there is an arc transition between the two first support ear plates 35. Two first fixing ear plates 36 are provided at both ends of the first fixing frame 34, and there is an arc transition between the two first fixing ear plates 36. The third fastener 33 passes through the first support ear plate 35 and the first fixing ear plate 36 in sequence and is fixed between the first support frame 32 and the first fixing frame 34 by the nut 5. The arc transition on the first fixing frame 34 and the arc transition on the first support frame 32 can form a complete ring. The first fixing component 3 can be fixed to the designated component on the bucket head 300 through this ring.

[0028] Furthermore, in the double bucket cylinder protection device for excavators of this utility model, two second support ear plates 45 are provided at both ends of the bottom of the second support frame 42, and there is an arc transition between the two second support ear plates 45. Two second fixing ear plates 46 are provided at both ends of the second fixing frame 44, and there is an arc transition between the two second fixing ear plates 46. The fourth fastener 43 passes through the second support ear plate 45 and the second fixing ear plate 46 in sequence and is then fixed between the second support frame 42 and the second fixing frame 44 by the nut 5. The arc transition on the second fixing frame 44 and the arc transition on the second support frame 42 can also form a complete ring, and the cylinder 101 is fixedly sleeved in the ring.

[0029] In one specific embodiment, in the double bucket cylinder protection device for excavators of this utility model, the number of second fixing components 4 is 2 to 6, and each second fixing component 4 is evenly spaced on the outer periphery of the cylinder 101. More specifically, the number of second fixing components 4 is 2. Of course, the number of second fixing components 4 can be adjusted synchronously according to the application scenario, cylinder 101 size and other working conditions during actual use.

[0030] As a specific embodiment, in the double bucket cylinder protection device for excavators of this utility model, the slide groove 11 is a V-shaped slide groove and the slider 21 is a V-shaped slider. The cooperation of the V-shaped structure realizes the stable sliding guidance of the track 2 to the protective cover 1, while enhancing the overall impact resistance of the device. Moreover, the tight cooperation between the V-shaped slide groove and the V-shaped slider can effectively prevent the protective cover 1 from shifting or shaking during the sliding process.

[0031] In one specific embodiment, in the double bucket cylinder protection device for excavators of this utility model, the slider 21 is fixed to the inner walls of both sides of the protective cover 1 by the fifth fastener 22. This arrangement facilitates the disassembly and assembly of the slider 21. When the slider 21 is worn and causes poor sliding or no sliding, a new slider 21 can be directly replaced.

[0032] In one specific embodiment, in the double bucket cylinder protection device for excavators of this utility model, each fastener is fitted with a corresponding washer 6, which improves the stability of the fastener fixing.

[0033] On the other hand, the present invention also provides an excavator, which includes the above-mentioned double bucket cylinder protection device for excavators.

[0034] The working principle of the device for protecting the double bucket cylinders of excavators according to this utility model is as follows:

[0035] When the piston rod 102 of the bucket cylinder 100 extends out of the cylinder 101, the protective cover 1 slides along the groove 11 of the track 2 towards the bucket head 300 via the slider 21, always covering the extended bare part of the piston rod 102. When the piston rod 102 retracts, the protective cover 1 slides towards the cylinder 101 along with the bucket head 300, ensuring no interference during movement. The track 2 is securely installed in the cylinder 101 by multiple second fixing components 4. The protective cover 1 moves synchronously with the bucket head 300 via the first fixing component 3, forming a dynamic following protective structure, effectively blocking mineral splashes and collisions, and achieving full-stroke protection for the piston rod 102.

[0036] In summary, compared with the prior art, the dual bucket cylinder protection device for excavators of this utility model has the following advantages and beneficial effects:

[0037] This device has a simple structure and is easy to assemble and disassemble. Through the cooperation between the protective cover 1 and the track 2, when the piston rod 102 extends, the protective cover 1 slides along the track 2 towards the bucket head 300, accurately covering the exposed bare rod part. When the piston rod 102 retracts, the protective cover 1 retracts synchronously, ensuring no interference during the movement. It effectively blocks mineral and rock fragments splashed in the mining environment, preventing the piston rod 102 from being hit or scratched. It achieves dynamic protection for the piston rod 102 throughout its entire stroke, significantly reducing the risk of surface damage, and has good practicality and adaptability.

[0038] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement state shown in the accompanying drawings.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A double bucket cylinder protection device for an excavator, wherein the double bucket cylinder protection device is fixed to the bucket cylinders, the two bucket cylinders are connected to the bucket head and the stick, each bucket cylinder includes a cylinder barrel and a piston rod sleeved within the cylinder barrel, characterized in that... The dual-bucket cylinder protective device for an excavator includes a protective cover connected to the bucket head via a first fixing component and a track connected to the cylinder via a second fixing component. The protective cover is positioned above the piston rod, wherein: The track has grooves on both sides, and the inner walls of the protective cover are provided with sliders that match the grooves. The sliders are slidably connected to the grooves. The first fixing component includes a first support frame fixed to both sides of the protective cover by a first fastener, and a first fixing frame fixedly connected below the first support frame by a third fastener. The second fixing component includes a second support frame fixed to the track by a second fastener, and a second fixing frame fixedly connected below the second support frame by a fourth fastener.

2. The double bucket cylinder protection device for excavators according to claim 1, characterized in that, The first support frame has two first support ear plates at both ends of its bottom, with an arc transition between the two first support ear plates. The first fixing frame has two first fixing ear plates at both ends, with an arc transition between the two first fixing ear plates. The third fastener passes through the first support ear plates and the first fixing ear plates in sequence and is then fixed between the first support frame and the first fixing frame by a nut.

3. The double bucket cylinder protection device for excavators according to claim 1, characterized in that, The second support frame has two second support ear plates at both ends of its bottom, with an arc transition between the two second support ear plates. The second fixing frame has two second fixing ear plates at both ends, with an arc transition between the two second fixing ear plates. The fourth fastener passes through the second support ear plates and the second fixing ear plates in sequence and is then fixed between the second support frame and the second fixing frame by the nut.

4. The double bucket cylinder protection device for excavators according to claim 1, characterized in that, The number of the second fixing components is 2 to 6, and each second fixing component is evenly spaced on the outer periphery of the cylinder.

5. The double bucket cylinder protection device for excavators according to claim 1, characterized in that, The groove is a V-shaped groove, and the slider is a V-shaped slider.

6. The double bucket cylinder protection device for excavators according to claim 1, characterized in that, The slider is fixed to the inner walls of both sides of the protective cover by a fifth fastener.

7. An excavator, characterized in that, The excavator includes the double bucket cylinder protection device as described in any one of claims 1-6.

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