Oil cylinder protection structure of excavator working device and excavator

Abstract

The utility model provides an oil cylinder protection structure of an excavator working device and an excavator, and the oil cylinder protection structure comprises a fixed frame, an oil cylinder, an oil cylinder, an oil cylinder, an oil cylinder and a protective cover, the protective cover fixing piece is connected with the fixing frame, and the protective cover fixing piece is used for being arranged on one side of a cylinder body of the oil cylinder; the first end of the protective cover sliding piece is connected with a cylinder rod end fixing block of the oil cylinder, the second end of the protective cover sliding piece is connected with the protective cover fixing piece, and the protective cover sliding piece and the cylinder rod stretch out and draw back synchronously. The oil cylinder protection structure can protect the oil cylinder from being damaged in the working process, so that the service life of the oil cylinder is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy machinery, in particular to an oil cylinder protection structure of an excavator working device and an excavator. Background Art

[0002] At present, the installation mode of the oil cylinder of the working device in the micro-excavation industry is generally as follows: the cylinder body is fixed at one end of the working device, and the cylinder rod is fixed at the other end of the working device. When the hydraulic cylinder is working, the cylinder rod performs telescopic movement under the action of hydraulic oil. When the cylinder rod is extended, the cylinder rod is completely exposed to the outside; due to the different working environments of the excavator, the exposed cylinder rod is easily bumped or scratched by hard foreign objects. Once the cylinder rod is damaged, it will not only affect the service life of the cylinder, but also cause oil leakage accidents in serious cases; At present, the existing cylinders cannot be effectively protected during the operation of the excavator, which reduces the service life of the cylinder and has a high accident rate.

[0003] Therefore, how to protect the oil cylinder from damage during operation, thereby increasing its lifespan and reducing the accident rate is a technical problem that needs to be solved urgently. Utility Model Content

[0004] In view of this, embodiments of the present invention provide an oil cylinder protection structure of an excavator working device and an excavator to eliminate or improve one or more defects in the prior art.

[0005] One aspect of the present invention provides a cylinder protection structure for an excavator working device, the cylinder protection structure comprising:

[0006] A fixing bracket, used for connecting with the cylinder body of the oil cylinder;

[0007] a protective cover fixing member connected to the fixing frame, wherein the protective cover fixing member is used to be arranged on one side of the cylinder body of the oil cylinder; and

[0008] A protective cover sliding member has a first end connected to the cylinder rod end fixing block of the oil cylinder, and a second end connected to the protective cover fixing member. The protective cover sliding member and the cylinder rod are synchronously extended and retracted.

[0009] In some embodiments of the present invention, the fixing frame includes an upper fixing frame and a lower fixing frame, and the upper fixing frame and the lower fixing frame are respectively arranged on the upper and lower sides of the cylinder body, and the upper fixing frame and the lower fixing frame are detachably connected.

[0010] In some embodiments of the present invention, both the upper fixing frame and the lower fixing frame have a semicircular groove for embedding the cylinder body.

[0011] In some embodiments of the present invention, the protective cover fixing member is a rectangular box structure with an open end, the bottom end of the protective cover fixing member is detachably connected to the fixing frame, and the second end of the protective cover sliding member extends from the end opening of the protective cover fixing member to the hollow part of the protective cover fixing member.

[0012] In some embodiments of the present invention, the hollow portion of the protective cover fixing member has a sliding groove, and the second end of the protective cover sliding member has a sliding block.

[0013] In some embodiments of the present invention, a reinforcement structure is provided on the top side wall of the protective cover fixing member.

[0014] In some embodiments of the present invention, the reinforcement structure is a V-shaped bent rib.

[0015] In some embodiments of the present invention, the protective cover sliding member is a rectangular plate-shaped structure as a whole, and the protective cover sliding member is located on one side of the cylinder rod of the oil cylinder.

[0016] In some embodiments of the present invention, the slider is a U-shaped nylon slider.

[0017] According to another aspect of the present invention, an excavator is further disclosed, which includes the cylinder protection structure of the excavator working device as described in any of the above embodiments.

[0018] The oil cylinder protection structure of the excavator working device disclosed in the above embodiment of the utility model includes a fixing frame, a protective cover fixing part and a protective cover sliding part. The protective cover fixing part is fixed to the cylinder body of the oil cylinder through the fixing frame, and the protective cover sliding part is synchronously extended and retracted with the cylinder rod; the oil cylinder protection structure enables the cylinder rod to be protected from being hit or scratched by hard foreign objects based on the protective cover sliding part after it is extended from the cylinder body, thereby increasing the service life of the oil cylinder, reducing the accident rate and improving the working reliability of the excavator.

[0019] Additional advantages, purposes, and features of the present invention will be partially set forth in the following description and will partially become apparent to those skilled in the art after studying the following or may be learned from practice of the present invention. The purposes and other advantages of the present invention may be achieved and obtained by the structures specifically pointed out in the specification and drawings.

[0020] Those skilled in the art will understand that the purposes and advantages that can be achieved by the present invention are not limited to those specifically described above, and the above and other purposes that can be achieved by the present invention will be more clearly understood based on the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are intended to provide a further understanding of the present invention, constitute a part of this application, and do not constitute a limitation of the present invention. The components in the drawings are not drawn to scale, but are merely for the purpose of illustrating the principles of the present invention. To facilitate the illustration and description of some parts of the present invention, the corresponding parts in the drawings may be enlarged, that is, they may be larger than other components in the exemplary device actually manufactured according to the present invention. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the oil cylinder protection structure of an embodiment of the utility model Figure 1 .

[0023] Figure 2 This is a schematic diagram of the structure of the oil cylinder protection structure of an embodiment of the utility model Figure 2 .

[0024] Figure 3 for Figure 1 A front view of the cylinder protection structure is shown.

[0025] Figure 4 for Figure 1 A side view of the cylinder protection structure is shown.

[0026] Figure 5 This is a structural schematic diagram of the upper fixing frame of the oil cylinder protection structure according to one embodiment of the present utility model.

[0027] Figure 6 This is a structural schematic diagram of the lower fixing frame of the oil cylinder protection structure according to one embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of the structure of the protective cover fixing member of the oil cylinder protection structure according to one embodiment of the utility model. Figure 1 .

[0029] Figure 8 This is a schematic diagram of the structure of the protective cover fixing member of the oil cylinder protection structure according to one embodiment of the utility model. Figure 2 .

[0030] Figure 9 This is a structural schematic diagram of a protective cover sliding member of an oil cylinder protection structure according to an embodiment of the present invention.

[0031] Figure 10 This is a structural schematic diagram of a protective cover sliding member of an oil cylinder protection structure according to another embodiment of the present invention.

[0032] Reference numerals:

[0033] Upper fixing frame 11 Lower fixing frame 12 Protective cover fixing part 20 Protective cover sliding part 30 Cylinder body 41 Cylinder rod 42 Slider 31 V-shaped bending rib 21 DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the schematic embodiments of the present invention and their description are used to explain the present invention, but are not intended to limit the present invention.

[0035] It should also be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0036] It should be emphasized that the term "include / comprises" when used herein refers to the existence of features, elements, steps or components, but does not exclude the existence or addition of one or more other features, elements, steps or components.

[0037] It should also be noted that directional terms such as "left end" and "right end" appearing in this specification are relative to the positions shown in the accompanying drawings. Unless otherwise specified, the term "connected" herein may refer not only to a direct connection but also to an indirect connection involving an intermediary. A direct connection refers to a connection between two components without the aid of an intermediate component, while an indirect connection refers to a connection between two components via another component.

[0038] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals represent the same or similar components.

[0039] Figure 1 and Figure 2 These are all structural diagrams of the oil cylinder protection structure. Figure 1 The oil cylinder rod 42 in the cylinder is in the retracted state, and Figure 2 The oil cylinder rod 42 is in the extended state. Figure 1 and Figure 2 As shown, the oil cylinder protection structure specifically includes a fixing frame, a protective cover fixing member 20 and a protective cover sliding member 30.

[0040] The fixing bracket is used to be connected to the cylinder body 41 of the oil cylinder; the protective cover fixing part 20 is connected to the fixing bracket, and the protective cover fixing part 20 is used to be arranged on one side of the cylinder body 41 of the oil cylinder; the first end of the protective cover sliding part 30 is connected to the end fixing block of the cylinder rod 42 of the oil cylinder, and the second end of the protective cover sliding part 30 is connected to the protective cover fixing part 20, and the protective cover sliding part 30 and the cylinder rod 42 are synchronously extended and retracted.

[0041] In the above embodiment, the fixing frame is specifically fixed to the cylinder body 41 of the oil cylinder, and the shield fixing member 20 is further fixed to the fixing frame, so that the shield fixing member 20 is connected to the cylinder body 41 based on the fixing frame. In addition, the left end of the shield slider 30 is connected to the fixing block of the cylinder rod 42, and the right end of the shield slider 30 is connected to the shield fixing member, and the shield slider 30 is slidable relative to the shield fixing member 20. Therefore, when the cylinder rod 42 of the oil cylinder gradually extends from the retracted state, the shield slider 30 also gradually extends from the retracted state along the shield fixing member 20 along with the cylinder rod 42; because the left end of the shield slider 30 is connected to the end fixing block of the cylinder rod 42, the shield slider 30 and the cylinder rod 42 move synchronously. For example, the fixing frame and the cylinder body 41 are connected in a detachable manner, and the protective cover fixing member 20 and the fixing frame can also be connected in a detachable manner; similarly, the protective cover sliding member 30 and the end fixing block of the cylinder rod 42 can also be connected in a detachable manner; in addition, the detachable connection method can specifically be screw connection, bolt connection, etc.

[0042] like Figure 3 As shown, when the cylinder rod 42 is retracted into the cylinder body 41, the protective cover sliding member 30 is also retracted into the protective cover fixing member 20; Figure 2 As can be seen, when the cylinder rod 42 extends, the protective cover sliding member 30 also extends from the interior of the protective cover fixing member 20. To ensure effective protection of the cylinder rod 42, the protective cover sliding member 30 is specifically a structure that can effectively prevent foreign objects from scratching the cylinder rod 42 when the oil cylinder is operating, such as a plate or sleeve. It should be noted that when it is a sleeve, in order to ensure that the protective cover sliding member 30 can slide stably relative to the protective cover fixing member 20, the inner diameter of the sleeve-shaped protective cover sliding member 30 can be set to be larger than the outer diameter of the cylinder body 41. It can be understood that the structural dimensions of the protective cover sliding member 30 listed in the above embodiments are all examples. It is sufficient to ensure that it can be synchronously extended and retracted with the cylinder rod 42 and can effectively protect the cylinder rod.

[0043] In some embodiments of the present invention, the fixing frame includes an upper fixing frame 11 and a lower fixing frame 12, and the upper fixing frame 11 and the lower fixing frame 12 are respectively arranged on the upper and lower sides of the cylinder body 41, and the upper fixing frame 11 and the lower fixing frame 12 are detachably connected. Figure 4 As shown, the upper fixing frame 11 is arranged at the upper end of the cylinder body 41, and the lower fixing frame 12 is arranged at the lower end of the cylinder body 41, and the upper fixing frame 11 and the lower fixing frame 12 are connected by bolts. In this embodiment, the protective cover fixing member 20 is specifically connected to the upper fixing frame 11.

[0044] like Figure 5 and Figure 6As shown, both the upper fixing frame 11 and the lower fixing frame 12 have semicircular grooves for receiving the cylinder body 41. The dimensions of the semicircular grooves of the two fixing frames are adapted to the outer diameter of the cylinder body 41. That is, when the upper fixing frame 11 and the lower fixing frame 12 are connected as a whole, the two semicircular grooves form a cylindrical axial hole adapted to the outer diameter of the cylinder body 41, and the axial hole is sleeved on the outside of the cylinder body 41. In addition, to ensure the stability of the connection between the protective cover fixing member 20 and the cylinder body 41, the number of fixing frames between the protective cover fixing member 20 and the cylinder body 41 can be set to two or more. When there are two fixing frames, the two fixing frames can be located at both ends of the protective cover fixing member 20. It should be understood that in this embodiment, the number of fixing frames is set to two or more for example only. In addition, the number of fixing frames can also be one. When there is one fixing frame, the length of the fixing frame can be appropriately lengthened to ensure that the fixing frame can secure the protective cover fixing member 20 to the cylinder body 41.

[0045] In some embodiments of the present invention, the protective cover fixing member 20 is a rectangular box structure with an open end, the bottom end of the protective cover fixing member 20 is detachably connected to the fixing frame, and the second end of the protective cover sliding member 30 extends from the end opening of the protective cover fixing member to the hollow part of the protective cover fixing member 20.

[0046] Figure 7 The structure of the protective cover fixing member 20 of the oil cylinder protection structure of an embodiment of the utility model is shown as follows: Figure 1 , Figure 8 The structure of the protective cover fixing member 20 of the oil cylinder protection structure of an embodiment of the utility model is shown as follows: Figure 2 ,like Figure 7 and Figure 8 As shown, the protective cover fixing part 20 is in the shape of a rectangular parallelepiped as a whole. The left end of the rectangular protective cover fixing part 20 is an open structure and the right end is closed, that is, the right end of the protective cover sliding part 30 extends from the left end of the protective cover fixing part 20 to its internal hollow part. The protective cover fixing part 20 specifically includes a top plate, a bottom plate, a front side plate, a rear side plate and a right end plate. The bottom of the bottom plate has a plurality of connecting ears, and the connecting ears are provided with connecting holes, that is, the protective cover fixing part 20 is connected to the fixing frame through bolts or screws based on the connecting holes on the connecting ears.

[0047] Furthermore, in order to improve the sliding stability between the shield sliding member 30 and the shield fixing member 20, a guide structure is further provided between the shield sliding member 30 and the shield fixing member 20. The guide structure can be exemplarily a guide rail guide groove structure or a slider slide groove structure. When it is a slider slide groove structure, exemplarily, the hollow portion of the shield fixing member 20 can be provided with a slide groove, and the second end of the shield sliding member 30 can be provided with a slider 31.

[0048] Figure 9 This is a schematic diagram of the structure when the protective cover sliding member 30 of the oil cylinder protection structure is removed from the slider 31. Figure 10 The schematic diagram of the structure of the protective cover sliding member 30 with the slider 31 installed is shown in FIG. Figure 9 and Figure 10 As can be seen in the figure, the protective cover slider 30 is a rectangular plate-shaped structure. The rectangular plate-shaped protective cover slider 30 is specifically located on one side of the cylinder rod 42. As can be seen from the figure, the right end of the protective cover slider 30 has two wing plates. The two wing plates are symmetrically arranged, so the number of corresponding sliders 31 can also be two, in which case the two sliders 31 are respectively arranged on the two wing plates.

[0049] Optionally, the slider 31 may be a U-shaped nylon slider 31, which is sleeved on the wing plate at the end of the protective cover slider 30. The U-shaped nylon slider 31 and the two slide grooves inside the protective cover fixing member 20 are combined to form a slider slide groove structure to reliably guide the protective cover slider 30. It will be understood that the guiding structure between the protective cover slider 30 and the protective cover fixing member 20 listed in this embodiment is only a preferred example. In other embodiments, other guiding structures may be used between the protective cover slider 30 and the protective cover fixing member 20 to achieve guidance.

[0050] Furthermore, in order to improve the strength of the protective cover fixing member 20, a reinforcement structure is provided on the top side wall of the protective cover fixing member 20. Figure 7 As shown, the reinforcement structure is located in the middle of the top side wall, and the reinforcement structure passes through along the length direction of the protective cover fixing part 20. Exemplarily, the reinforcement structure may be a V-shaped bending rib 21. In this case, the material of the protective cover fixing part 20 may be steel, and the V-shaped bending rib 21 may be processed by stamping and bending. In this embodiment, multiple bends can ensure the axial strength of the protective cover fixing part 20, and problems such as strength deformation will not occur during use. In this embodiment, the reinforcement structure is provided on the top side wall of the protective cover fixing part 20 in order to improve the support strength of the protective cover fixing part 20 in the axial direction of the oil cylinder. It can be understood that in order to improve the support strength of the protective cover fixing part 20, in addition to the reinforcement methods listed in the above embodiments, the protective cover fixing part 20 may also adopt other types of reinforcement structures to improve its support strength, such as increasing the material thickness.

[0051] Correspondingly, the present application also provides an excavator, which includes the cylinder protection structure of the excavator working device as described in any of the above embodiments.

[0052] The above embodiments demonstrate that the oil cylinder protection structure of the excavator working device of the present application includes a fixing frame, a protective cover fixing member, and a protective cover sliding member. The protective cover fixing member is fixed to the cylinder body of the oil cylinder via the fixing frame, and the protective cover sliding member extends and retracts synchronously with the cylinder rod. This oil cylinder protection structure protects the cylinder rod from being damaged or scratched by hard foreign objects after it extends from the cylinder body, thereby extending the service life of the oil cylinder, reducing the accident rate, and improving the operating reliability of the excavator. Furthermore, this oil cylinder protection structure is easy to use, has a simple structure, is low in manufacturing cost, and improves the operating efficiency of the excavator.

[0053] In the present invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with or replace features of other embodiments.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cylinder protection structure for an excavator working device, characterized in that: The oil cylinder protection structure includes: A fixing bracket, used for connecting with the cylinder body of the oil cylinder; a protective cover fixing member connected to the fixing frame, wherein the protective cover fixing member is used to be arranged on one side of the cylinder body of the oil cylinder; and A protective cover sliding member has a first end connected to the cylinder rod end fixing block of the oil cylinder, and a second end connected to the protective cover fixing member. The protective cover sliding member and the cylinder rod are synchronously extended and retracted.

2. The cylinder protection structure of the excavator working device according to claim 1, characterized in that: The fixing frame includes an upper fixing frame and a lower fixing frame, and the upper fixing frame and the lower fixing frame are respectively arranged on the upper and lower sides of the cylinder body, and the upper fixing frame and the lower fixing frame are detachably connected.

3. The cylinder protection structure of the excavator working device according to claim 2, characterized in that: The upper fixing frame and the lower fixing frame both have a semicircular groove for embedding the cylinder body.

4. The cylinder protection structure of the excavator working device according to claim 1, characterized in that: The protective cover fixing piece is a rectangular box structure with an open end. The bottom end of the protective cover fixing piece is detachably connected to the fixing frame. The second end of the protective cover sliding piece extends from the end opening of the protective cover fixing piece to the hollow part of the protective cover fixing piece.

5. The cylinder protection structure of the excavator working device according to claim 4, characterized in that: The hollow portion of the protective cover fixing member is provided with a sliding groove, and the second end of the protective cover sliding member is provided with a sliding block.

6. The oil cylinder protection structure of the excavator working device according to claim 4, characterized in that: The top side wall of the protective cover fixing piece is provided with a reinforcement structure.

7. The cylinder protection structure of the excavator working device according to claim 6, characterized in that: The reinforcement structure is a V-shaped bent rib.

8. The cylinder protection structure of the excavator working device according to claim 5, characterized in that: The protective cover sliding member is a rectangular plate-shaped structure as a whole, and the protective cover sliding member is located on one side of the cylinder rod of the oil cylinder.

9. The cylinder protection structure of the excavator working device according to claim 5, characterized in that: The slider is a U-shaped nylon slider.

10. An excavator, characterized in that: The excavator includes the cylinder protection structure of the excavator working device according to any one of claims 1 to 9.

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