Excavator movable arm reliable in connection

Abstract

The utility model discloses a reliable connection excavator movable arm, which comprises a movable arm main body, an auxiliary device, a first side port, a second side port, a first connecting port, a second connecting port and a driving cylinder, the first connecting port and the second connecting port are arranged at the middle section of the movable arm main body, and the auxiliary device is arranged on the first connecting port or / and the second connecting port. The auxiliary device comprises an adjusting screw rod, a spring, a lubricating piece and a retainer, a connecting rod is installed in the retainer, the lubricating piece is nested on the retainer and attached to the outer side wall of the connecting rod, a lubricating cavity is formed in the lubricating piece, a plurality of lubricating openings are formed in the surface of the side, close to the connecting rod, of the lubricating piece, and the lubricating cavity is communicated with the lubricating openings. And the auxiliary device is optimally arranged, and the sealing sleeve is arranged at the side end of the auxiliary device, so that the lubrication degree of the outer surface of the connecting rod is efficiently improved. The relative position of the lubricating piece can be indirectly changed by screwing the adjusting screw rod, so that the lubricating piece is tightly attached to the outer surface of the connecting rod. The structure is simple and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator components, in particular to an excavator boom with reliable connection. Background Art

[0002] An excavator, also known as excavating machinery, is an earth-moving machine that uses a bucket to dig materials above or below the surface of the machine and load them into a transport vehicle or unload them to a stockpile. The materials excavated by the excavator are mainly soil, coal, silt, and pre-loosened soil and rocks.

[0003] However, it was found during use that it is difficult to ensure uniform oiling inside the connection position when lubricating the excavator in the prior art, which leads to insufficient lubrication between the hydraulic cylinder that controls the excavator bucket to perform excavation and the excavator boom. In addition, the construction environment often contains dust, which reduces the smoothness of the excavation action to a certain extent. Utility Model Content

[0004] The utility model provides an excavator boom with reliable connection, which overcomes the shortcomings described in the background technology.

[0005] The technical solution adopted by the utility model to solve its technical problem is:

[0006] The invention discloses an excavator boom with reliable connection, comprising a boom body, an auxiliary device, a first side port, a second side port, a first connection port, a second connection port, and a driving cylinder. The first side port and the second side port are arranged at the two outer ends of the boom body, the first connection port and the second connection port are arranged at the middle section of the boom body, the auxiliary device is arranged on the first connection port and / or the second connection port, a connecting rod is arranged on the first connection port and the second connection port to connect with the driving cylinder, the auxiliary device comprises an adjusting screw, a spring, a lubricating sheet, and a retaining frame, the connecting rod is installed in the retaining frame, the lubricating sheet is nested on the retaining frame, the lubricating sheet is fitted with the outer wall of the connecting rod, a spring is connected between the adjusting screw and the lubricating sheet, a lubricating cavity is arranged in the lubricating sheet, and a surface of the lubricating sheet close to the connecting rod is provided with a plurality of lubricating ports, the lubricating cavity and the lubricating port are connected, a filling cavity is arranged in the retaining frame, the output end of the filling cavity is connected with the lubricating cavity, the two ends of the retaining frame are prevented from leaking lubricating oil by sealing sleeves, and at least two layers of sealing rings are arranged in the sealing sleeves.

[0007] A preferred technical solution: The auxiliary device also includes a mounting frame and a sleeve. The mounting frame is welded to the boom body, the adjusting screw is threadedly connected to the mounting frame, the sleeve is fixedly installed between the mounting frame and the retaining frame, and the spring is installed in the sleeve.

[0008] A preferred technical solution: the filling chamber is sealed by a sealing plug.

[0009] A preferred technical solution: the opening size of the lubrication cavity at the side end of the lubrication plate is larger than the opening size of the filling cavity.

[0010] A preferred technical solution: auxiliary devices are arranged on both sides of the retaining frame, and different auxiliary devices are arranged in a staggered distribution.

[0011] A preferred technical solution: the connecting rod is a cylindrical structure, and the side of the lubricating sheet close to the connecting rod is an arc-shaped structure.

[0012] A preferred technical solution: The diameter of the connecting rod is at least four centimeters.

[0013] By adopting the above technical solution, the beneficial effects of the utility model are:

[0014] The utility model optimizes the auxiliary device and sets a sealing sleeve at the side end of the auxiliary device to effectively improve the lubrication of the outer surface of the connecting rod. The relative position of the lubricating sheet can be indirectly changed by turning the adjusting screw, so that the lubricating sheet is closely attached to the outer surface of the connecting rod. The structure is simple and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a top view of the utility model;

[0018] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the lubricating sheet in the excavator boom;

[0020] Figure 5 A simplified schematic diagram of an excavator boom being mounted on an excavator to form a digging arm.

[0021] Description of main reference numerals:

[0022] 100. Boom body; 1. First side port; 2. First connection port; 3. Second connection port; 4. Second side port; 5. Auxiliary device; 51. Adjusting screw; 52. Mounting frame; 53. Retaining frame; 54. Lubricating sheet; 55. Lubricating cavity; 56. Lubricating port; 57. Filling cavity; 58. Sealing plug; 59. Sealing sleeve; 591. Sealing ring; 510. Sleeve; 511. Spring; 541. Lubricating opening; 6. Connecting rod. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 5As shown, this embodiment provides an excavator boom with reliable connection, including a boom body 100, an auxiliary device 5, a first side port 1, a second side port 4, a first connection port 2, and a second connection port 3. The first side port 1 and the second side port 4 are arranged at the two outer ends of the boom body 100, the first connection port 2 and the second connection port 3 are arranged in the middle section of the boom body 100, the auxiliary device 5 is arranged on the first connection port 2 and / or the second connection port 3, the first connection port 2 and the second connection port 3 are arranged on the connecting rod 6 connected with the driving cylinder, the auxiliary device 5 includes an adjusting screw 51, a spring 511, a lubricating sheet 54, and a retaining frame 53. The connecting rod 6 is installed in the retainer 53, and the lubricating sheet 54 is nested on the retainer 53. The lubricating sheet 54 is in contact with the outer wall of the connecting rod 6. A spring 511 is connected between the adjusting screw 51 and the lubricating sheet 54. A lubricating cavity 55 is provided in the lubricating sheet 54, and a plurality of lubricating ports 56 are provided on the surface of the lubricating sheet 54 on the side close to the connecting rod 6. The lubricating cavity 55 and the lubricating ports 56 are connected. A filling cavity 57 is provided in the retainer 53, and the output end of the filling cavity 57 is connected with the lubricating cavity 55. The two ends of the retainer 53 are prevented from leaking lubricating oil through a sealing sleeve 59, and at least two layers of sealing rings 591 are provided in the sealing sleeve 59. The spring 511 is a hard spring 511, and the displacement caused by its elastic potential is small, which meets the use requirements.

[0024] Furthermore, the auxiliary device 5 also includes a mounting frame 52 and a sleeve 510 . The mounting frame 52 is welded to the boom body 100 . The adjusting screw 51 is threadedly connected to the mounting frame 52 . The sleeve 510 is fixedly installed between the mounting frame 52 and the retaining frame 53 . The spring 511 is installed in the sleeve 510 .

[0025] Furthermore, the filling chamber 57 is sealed by a sealing plug 58 .

[0026] Furthermore, the opening size of the lubrication cavity 55 at the side end of the lubrication plate 54 is larger than the opening size of the filling cavity 57 , and the opening of the lubrication cavity 55 at the side end of the lubrication plate 54 is a lubrication opening 541 .

[0027] Furthermore, auxiliary devices 5 are arranged on both sides of the retaining frame 53, and different auxiliary devices 5 are arranged in a staggered distribution.

[0028] Furthermore, the connecting rod 6 is a cylindrical structure, and the side of the lubricating sheet 54 close to the connecting rod 6 is an arc-shaped structure.

[0029] Furthermore, the diameter of the connecting rod 6 is at least four centimeters.

[0030] The excavator boom of the utility model is installed on the excavator arm of the excavator, and the fixed end and the movable end of the hydraulic cylinder are firmly connected according to the corresponding structure. Due to the requirements of the excavator's excavation action, it is necessary to ensure the strength of the connection position. The most direct way is to increase the diameter of the connecting rod 6. In particular, the lubrication between the hydraulic cylinder controlling the bucket and the excavator boom is not in place, and the construction environment often contains dust, which reduces the smoothness of the excavation action to a certain extent. In the prior art, oil guns are usually used for filling, which makes it difficult to ensure uniform internal oiling.

[0031] The utility model optimizes the corresponding structure, and a plurality of lubrication ports 56 are arranged on the lubrication sheet 54, and the lubrication ports 56 are distributed at the side ends of the connecting rod 6, and the lubrication oil is directly and efficiently injected through the filling cavity 57; when the gap between the retainer 53 and the connecting rod 6 becomes larger, the relative position of the lubrication sheet 54 can be changed by adjusting the thread and transitioning through the spring 511; the opening size of the lubrication cavity 55 at the side end of the lubrication sheet 54 is larger than the opening size of the filling cavity 57, so as to ensure the displacement of the lubrication sheet 54 and the filling effect of the lubrication oil, and the initial position of the lubrication sheet 54 is not moved into the retainer 53. The double-layer sealing ring 591 ensures that the oil on the outer surface of the connecting rod 6 in the retainer 53 does not penetrate to the outside, so as to prevent the oil from sticking to dust, and when the connecting rod 6 deviates, the sealing performance of the sealing ring 591 in the sealing sleeve 59 is damaged.

[0032] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. An excavator boom with reliable connection, characterized in that: The invention comprises a boom body, an auxiliary device, a first side port, a second side port, a first connection port, a second connection port, and a driving cylinder. The first side port and the second side port are arranged at the two outer ends of the boom body, the first connection port and the second connection port are arranged at the middle section of the boom body, the auxiliary device is arranged on the first connection port and / or the second connection port, a connecting rod is arranged on the first connection port and the second connection port to connect with the driving cylinder, the auxiliary device comprises an adjusting screw, a spring, a lubricating sheet, and a retaining frame, the connecting rod is installed in the retaining frame, the lubricating sheet is nested on the retaining frame, the lubricating sheet is fitted with the outer wall of the connecting rod, a spring is connected between the adjusting screw and the lubricating sheet, a lubricating cavity is arranged in the lubricating sheet, and a surface of the lubricating sheet close to the connecting rod is provided with a plurality of lubricating ports, the lubricating cavity is communicated with the lubricating port, a filling cavity is arranged in the retaining frame, the output end of the filling cavity is communicated with the lubricating cavity, the two ends of the retaining frame are prevented from leaking the lubricating oil by sealing sleeves, and at least two layers of sealing rings are arranged in the sealing sleeves.

2. The excavator boom with reliable connection according to claim 1, characterized in that: The auxiliary device also includes a mounting frame and a sleeve. The mounting frame is welded to the boom body. The adjusting screw is threadedly connected to the mounting frame. The sleeve is fixedly installed between the mounting frame and the retaining frame. The spring is installed in the sleeve.

3. The excavator boom with reliable connection according to claim 1, characterized in that: The filling chamber is sealed by a sealing plug.

4. The excavator boom with reliable connection according to claim 1, characterized in that: The opening size of the lubrication cavity at the side end of the lubrication plate is larger than the opening size of the filling cavity.

5. The excavator boom with reliable connection according to claim 1, characterized in that: Auxiliary devices are arranged on both sides of the retaining frame, and different auxiliary devices are arranged in a staggered distribution.

6. The excavator boom with reliable connection according to claim 1, characterized in that: The connecting rod is a cylindrical structure, and the side of the lubricating sheet close to the connecting rod is an arc-shaped structure.

7. The excavator boom with reliable connection according to claim 1, characterized in that: The connecting rod has a diameter of at least four centimeters.

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