Bucket rod hydraulic cylinder protection device of excavator

Abstract

The utility model discloses a bucket rod hydraulic cylinder protection device of an excavator, and relates to the technical field of excavators. A bucket rod hydraulic cylinder protection device of an excavator comprises a bucket rod, the top of the bucket rod is fixedly connected with a bucket cylinder shaft frame, the interior of the bucket cylinder shaft frame is rotationally connected with a cylinder barrel, the interior of the cylinder barrel is slidably connected with a piston rod, and a hydraulic cylinder dustproof structure is located on the cylinder barrel and comprises a connecting cover, a cylinder cover and two dustproof arc plates. The connecting cover is fixedly mounted on the outer surface of the cylinder barrel, the cylinder cover is fixedly mounted at the end, away from the cylinder barrel, of the connecting cover, two mounting grooves are formed in the inner wall of the cylinder cover, and under the cooperation of the dustproof arc plates, the fixing bolts, the connecting bolts and the positioning plate, an operator can detach the two dustproof arc plates from the cylinder cover through tools. And meanwhile, the problem that the whole hydraulic cylinder or related parts need to be disassembled is solved, the two dustproof arc plates can be replaced conveniently, and the replacement convenience of the dustproof arc plates is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to a bucket arm hydraulic cylinder protection device of an excavator. Background Art

[0002] As core equipment in the field of engineering machinery, excavators are widely used in various construction scenarios. Among them, the boom hydraulic cylinder, as an important component of the excavator, is responsible for realizing the extension and retraction of the boom, which has a vital impact on the overall performance and work efficiency of the excavator.

[0003] In actual use, the working environment of the boom hydraulic cylinder is often harsh, and the dust ring on the cylinder barrel is easily worn and damaged, which makes the hydraulic cylinder easily affected by external dust, thus affecting the normal operation of the excavator. The traditional method of replacing the dust ring usually requires disassembling the entire hydraulic cylinder or related components, which is complicated and time-consuming to operate, which not only increases the maintenance cost, but also affects the use efficiency of the excavator. Therefore, we propose a protective device for the boom hydraulic cylinder of the excavator. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a boom hydraulic cylinder protection device for an excavator, which can solve the problem that the working environment of the boom hydraulic cylinder is often harsh, and the dust ring on the cylinder barrel is easily worn and damaged, causing the hydraulic cylinder to be easily affected by external dust, thereby affecting the normal operation of the excavator. The traditional method of replacing the dust ring usually requires disassembly of the entire hydraulic cylinder or related components, which is complicated and time-consuming to operate, which not only increases the maintenance cost, but also affects the use efficiency of the excavator.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a bucket hydraulic cylinder protection device for an excavator, comprising:

[0006] A bucket rod, the top of which is fixedly connected to a bucket cylinder shaft frame, the inside of which is rotatably connected to a cylinder barrel, and the inside of which is slidably connected to a piston rod;

[0007] Hydraulic cylinder dustproof structure, the hydraulic cylinder dustproof structure is located in the cylinder barrel;

[0008] The dustproof structure of the hydraulic cylinder includes a connecting cover, a cylinder cover and two dustproof arc plates. The connecting cover is fixedly installed on the outer surface of the cylinder barrel, the cylinder cover is fixedly installed on the connecting cover and the end away from the cylinder barrel, the inner wall of the cylinder cover is provided with two mounting grooves, the two dustproof arc plates are both slidably connected with the corresponding mounting grooves, the two dustproof arc plates are both in contact with the outer surface of the piston rod, and the outer surfaces of the two dustproof arc plates are provided with threaded grooves.

[0009] Preferably, the outer surface of the cylinder cover is provided with two symmetrical fixing threaded holes, the interiors of the two fixing threaded holes are both threadedly connected with fixing bolts, and the two fixing bolts are both threadedly connected with the corresponding thread grooves.

[0010] Preferably, two symmetrical positioning plates are fixedly connected to the outer surfaces of the two dust arc plates, and connecting threaded holes are provided on one side of the four positioning plates.

[0011] Preferably, two symmetrical positioning grooves are provided on the side of the cylinder head away from the cylinder barrel, and four positioning plates are slidably connected to the corresponding positioning grooves, wherein the two corresponding positioning plates are threadedly connected with connecting bolts, and the two connecting bolts are threadedly connected to the corresponding two connecting threaded holes.

[0012] Preferably, the two dust-proof arc plates are both semicircular.

[0013] Preferably, a boom cylinder shaft groove is provided on one side of the boom.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) The arm hydraulic cylinder protection device of the excavator, through the cooperation of the dust arc plate, fixing bolts, connecting bolts and positioning plates, enables the operator to use tools to remove the two dust arc plates from the cylinder cover respectively, while avoiding the need to disassemble the entire hydraulic cylinder or related components, thereby facilitating the replacement of the two dust arc plates, further improving the convenience of replacing the dust arc plates.

[0016] (2) The arm hydraulic cylinder protection device of the excavator is connected by sliding the positioning plate and the positioning groove, so that when installing the two dust arc plates, it is only necessary to slide the two positioning plates on it into the corresponding positioning grooves to perform preliminary positioning of the dust arc plates, thereby facilitating subsequent fixed installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the cylinder structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the cylinder head structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the explosion structure of the dust arc plate of the utility model.

[0022] Figure numerals: 1. arm; 2. arm cylinder shaft groove; 3. bucket cylinder shaft frame; 4. cylinder barrel; 5. connecting cover; 6. cylinder head; 7. piston rod; 8. positioning groove; 9. mounting groove; 10. positioning plate; 11. connecting threaded hole; 12. connecting bolt; 13. dust arc plate; 14. threaded groove; 15. fixing bolt; 16. fixing threaded hole. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] See also Figure 1-4 The utility model provides a technical solution: a bucket hydraulic cylinder protection device for an excavator, comprising:

[0028] A bucket arm 1, the top of which is fixedly connected to a bucket cylinder shaft frame 3, the inside of which is rotatably connected to a cylinder barrel 4, and the inside of which is slidably connected to a piston rod 7;

[0029] Hydraulic cylinder dustproof structure, the hydraulic cylinder dustproof structure is located in the cylinder barrel 4;

[0030] The dustproof structure of the hydraulic cylinder includes a connecting cover 5, a cylinder cover 6 and two dustproof arc plates 13. The two dustproof arc plates 13 are both semicircular. The connecting cover 5 is fixedly mounted on the outer surface of the cylinder barrel 4. The cylinder cover 6 is fixedly mounted on the connecting cover 5 and the end away from the cylinder barrel 4. The inner wall of the cylinder cover 6 is provided with two mounting grooves 9. The two dustproof arc plates 13 are both slidably connected to the corresponding mounting grooves 9. The two dustproof arc plates 13 are both in contact with the outer surface of the piston rod 7. The outer surfaces of the two dustproof arc plates 13 are provided with threaded grooves 14.

[0031] Two symmetrical fixing threaded holes 16 are provided on the outer surface of the cylinder head 6, and fixing bolts 15 are threadedly connected to the inside of the two fixing threaded holes 16. The two fixing bolts 15 are threadedly connected to the corresponding threaded grooves 14. The outer surfaces of the two dust arc plates 13 are fixedly connected to two symmetrical positioning plates 10, and one side of the four positioning plates 10 is provided with a connecting threaded hole 11.

[0032] Two symmetrical positioning grooves 8 are provided on the side of the cylinder head 6 away from the cylinder barrel 4, and four positioning plates 10 are slidably connected to the corresponding positioning grooves 8, wherein the two corresponding positioning plates 10 are threadedly connected with connecting bolts 12, and the two connecting bolts 12 are threadedly connected to the corresponding two connecting threaded holes 11, and a boom cylinder shaft groove 2 is provided on one side of the boom 1.

[0033] Furthermore, when the device is used, the two dust-proof arc plates 13 can prevent dust on the piston rod 7 from entering the cylinder 4. The operator uses tools to remove the two fixing bolts 15 respectively, and then removes the two connecting bolts 12, so that the two dust-proof arc plates 13 can be easily removed from the cylinder head 6. At the same time, the need to disassemble the entire hydraulic cylinder or related components is avoided, thereby facilitating the replacement of the two dust-proof arc plates 13. When installing the two dust-proof arc plates 13, it is only necessary to slide the two positioning plates 10 thereon into the corresponding positioning grooves 8 to preliminarily position the dust-proof arc plates 13, thereby facilitating subsequent fixed installation.

[0034] Through the cooperation of the dustproof arc plate 13, the fixing bolts 15, the connecting bolts 12 and the positioning plate 10, the operator can use tools to remove the two dustproof arc plates 13 from the cylinder head 6 respectively, while avoiding the need to disassemble the entire hydraulic cylinder or related components, thereby facilitating the replacement of the two dustproof arc plates 13 and further improving the convenience of replacing the dustproof arc plates 13.

[0035] Through the sliding connection between the positioning plate 10 and the positioning groove 8, when installing the two dust arc plates 13, it is only necessary to slide the two positioning plates 10 thereon into the corresponding positioning grooves 8 to preliminarily position the dust arc plates 13, thereby facilitating subsequent fixed installation.

[0036] Working principle: The operator uses tools to remove the two fixing bolts 15 respectively, and then removes the two connecting bolts 12, so that the two dust-proof arc plates 13 can be easily removed from the cylinder head 6. At the same time, the problem of needing to disassemble the entire hydraulic cylinder or related components is avoided, thereby facilitating the replacement of the two dust-proof arc plates 13. When installing the two dust-proof arc plates 13, it is only necessary to slide the two positioning plates 10 thereon into the corresponding positioning grooves 8 to preliminarily position the dust-proof arc plates 13, thereby facilitating subsequent fixed installation.

[0037] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A dipper arm hydraulic cylinder protection device for an excavator, characterized in that: include: A bucket rod (1), the top of the bucket rod (1) is fixedly connected to a bucket cylinder shaft frame (3), the interior of the bucket cylinder shaft frame (3) is rotatably connected to a cylinder barrel (4), and the interior of the cylinder barrel (4) is slidably connected to a piston rod (7); A hydraulic cylinder dustproof structure, the hydraulic cylinder dustproof structure is located in the cylinder barrel (4); The dustproof structure of the hydraulic cylinder comprises a connecting cover (5), a cylinder cover (6) and two dustproof arc plates (13), wherein the connecting cover (5) is fixedly mounted on the outer surface of the cylinder barrel (4), and the cylinder cover (6) is fixedly mounted between the connecting cover (5) and an end away from the cylinder barrel (4); The inner wall of the cylinder cover (6) is provided with two mounting grooves (9), and the two dust arc plates (13) are both slidably connected to the corresponding mounting grooves (9); The two dust-proof arc plates (13) are in contact with the outer surface of the piston rod (7), and the outer surfaces of the two dust-proof arc plates (13) are provided with thread grooves (14).

2. The dipper arm hydraulic cylinder protection device of an excavator according to claim 1, characterized in that: The outer surface of the cylinder cover (6) is provided with two symmetrical fixing threaded holes (16), the interiors of the two fixing threaded holes (16) are both threadedly connected with fixing bolts (15), and the two fixing bolts (15) are both threadedly connected with corresponding thread grooves (14).

3. The boom hydraulic cylinder protection device for an excavator according to claim 1, characterized in that: Two symmetrical positioning plates (10) are fixedly connected to the outer surfaces of the two dust arc-proof plates (13), and one side of the four positioning plates (10) is provided with a connecting threaded hole (11).

4. The boom hydraulic cylinder protection device for an excavator according to claim 3, characterized in that: The cylinder cover (6) is provided with two symmetrical positioning grooves (8) on a side away from the cylinder barrel (4), and four positioning plates (10) are slidably connected to the corresponding positioning grooves (8), wherein the two corresponding positioning plates (10) are threadedly connected with connecting bolts (12); Wherein, the two connecting bolts (12) are both threadedly connected to the corresponding two connecting threaded holes (11).

5. The boom hydraulic cylinder protection device for an excavator according to claim 1, characterized in that: The two dust-proof arc plates (13) are both semicircular.

6. The boom hydraulic cylinder protection device for an excavator according to claim 1, characterized in that: A bucket rod cylinder shaft groove (2) is provided on one side of the bucket rod (1).

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