CN204692235U - A kind of dust laying oil capping - Google Patents

Abstract

A kind of dust laying oil capping, comprises oil seal cover, band oilhole lining, anti-dust seal, it is characterized in that described oil seal cover is drilled with bolt hole, and described anti-dust seal and band oilhole lining are arranged in oil seal cover; Oil seal cover mounting strap oilhole lining place is also configured with grease fitting.In actual use, not only there is good dustproof effect, and not easily make the oil sealing inside cylinder cap directly exposed under phosphorus slag environment, cause the damage of oil sealing, cause oil liquid leakage, environmental pollution can not be caused, and there is the function storing lubricant grease, piston rod is worked under grease lubrication state, its surface energy is made to adhere to one deck oil film for a long time, thus reach effective introduced contaminants that reduces to the infringement of oil cylinder oil seal, reduce the corrosion of phosphorus slag slurry to piston rod coating, and then reach the object extending oil cylinder oil seal service time.The utility model is applicable to hydraulic shovel technical field.

Description

A dust-proof oil seal

technical field

The utility model relates to the technical field of hydraulic excavators, in particular to a dust-proof oil seal.

Background technique

The Volvo EC210B hydraulic excavator is well received by users for its good engine performance, fast hydraulic action, and comfortable driving experience. Wengfu Group purchased several 210 series hydraulic excavators in 2006 for use in phosphogypsum slag yards. After nearly 10 years of use, the most frequent and most difficult to eradicate fault is the oil leakage of the bucket cylinder oil seal. In response to this fault, the maintenance technicians have tried many methods of technical improvement after research and thinking.

The above-mentioned existing hydraulic excavators obviously have defects in actual use and need to be improved. The utility model realizes that the above-mentioned defects can be improved, Naite has devoted himself to research and combined with repeated tests, and finally proposes a utility model with reasonable design and effective improvement of the above-mentioned defects.

Contents of the invention

In order to overcome the shortcoming of oil leakage from the oil seal of the bucket oil cylinder of the hydraulic excavator, the utility model aims to provide a dust-proof oil seal cover.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the utility model:

A dust-proof oil seal cover, including an oil seal cover, a bush with oil holes, and a dust-proof oil seal, characterized in that bolt holes are drilled on the oil seal cover, and the dust-proof oil seal and the bush with oil holes are installed in the oil seal cover ; There is also a lubricating nozzle at the bushing with oil hole installed on the oil seal cover.

Bolt holes are drilled on the oil seal cover of the utility model so that the oil seal cover can be installed on the cylinder head of the excavator with bolts; a dust-proof oil seal is installed in the oil seal cover. In the actual use process, this dust-proof oil seal not only has good dustproof It is not easy to separate from the cylinder head, and it is not easy to directly expose the oil seal inside the cylinder head to the phosphorus residue environment, causing damage to the oil seal, resulting in oil leakage, and will not cause environmental pollution. The lubricating oil nipple can inject lubricating oil to the bushing with oil holes, and also has the function of storing lubricating grease, so that the piston rod can work under the state of grease lubrication, so that a layer of oil film can be attached to the surface for a long time, so as to effectively reduce the impact of external impurities. The damage to the oil seal of the oil cylinder can reduce the corrosion of the coating of the piston rod by the phosphorus slag slurry, and then achieve the purpose of prolonging the service life of the oil seal of the oil cylinder.

The utility model is applicable to the technical field of hydraulic excavators.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic diagram of the structure of the oil seal;

Fig. 3 is a schematic diagram of the use and installation of the embodiment;

In the figure: 1-oil seal cover; 2-bush with oil hole; 3-lubricating oil nipple; 4-bolt hole; 5-dust-proof oil seal; 6-bolt; 7-original cylinder head.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Example:

As shown in Figure 1 and Figure 2, a dust-proof oil seal cover, including an oil seal cover 1, a bushing with oil holes 2, and a dust-proof oil seal 5, is characterized in that a bolt hole 4 is drilled on the oil seal cover 1, and the The dust-proof oil seal 5 and the bushing with oil holes 2 are installed in the oil seal cover 1; the place where the oil seal cover 1 is installed with the bushing 2 with oil holes is also equipped with a lubricating grease nipple 3.

A certain limited liability company's equipment maintenance department adopts this utility model to carry out technical transformation on the cylinder head of the bucket cylinder of Volvo hydraulic excavator. On the cylinder head produced by the original factory, only a dust-proof oil seal is designed and installed. In the actual use process , we found that this dust-proof oil seal not only cannot play a good role in dust-proof, but sometimes it will be separated from the cylinder head (even if there is an anti-loosening snap ring installed), so that the oil seal inside the cylinder head is directly exposed to the phosphorus slag environment , It is very easy to cause damage to the oil seal, resulting in oil leakage, reduced work efficiency, and environmental pollution. Install the utility model on the original oil cylinder head, so that there are two dust-proof oil seals on the cylinder head at the same time, and this device also has the function of storing lubricating grease, so that the piston rod works under the state of grease lubrication, making it A layer of oil film can be attached to the surface for a long time, so as to effectively reduce the damage of external impurities to the cylinder oil seal, reduce the corrosion of the piston rod coating by phosphorus slag slurry, and then achieve the purpose of prolonging the service life of the cylinder oil seal.

As shown in Figure 3, what is provided is the technical improvement of the dust-proof seal of the bucket cylinder block of the Volvo EC210B series excavator, including the following content: the original cylinder head 7 is drilled with the oil seal cover 1 of the utility model. 4 bolt holes (6mm), use 4 stainless steel bolts 6 (M6x50) to pass through the bolt holes 4 to assemble, the dust-proof oil seal cover 1 is shown in Figure 2, and a built-in anti-dust oil seal with the same size and performance as the original dust-proof oil seal Dust oil seal 5, install a bushing 2 with an oil hole again, this place is also equipped with a lubricating grease nipple 3 of M10, can inject lubricating oil to the bushing 2 with an oil hole.

After using the utility model, the oil leakage fault of the oil cylinder is alleviated, and the oil seal replacement cycle is extended from the original 1 week to more than 3 weeks, and the oil seal replacement cycle is correspondingly extended.

Using the utility model saves cost: according to the calculation of changing the oil seal repair kit once a week on average before refitting, a Volvo excavator needs to replace the bucket oil cylinder oil seal repair kit at least 50 times a year, calculated on the basis of 2000 yuan for one oil seal, one year It will consume nearly 100,000 yuan in sealing repair kits. After using the utility model, the replacement period of the bucket oil cylinder oil seal is calculated on an average of 3 weeks, and the oil seal only needs to be replaced about 17 times a year, saving nearly 70,000 yuan in cost. And the utility model is not only limited to the Volvo excavator, but also can be used on other similar mechanical equipment such as Carter and Komatsu, and has considerable practical value.

Claims (1)

1. A dust-proof oil seal cover, including an oil seal cover, a bushing with oil holes, and a dust-proof oil seal, characterized in that the oil seal cover (1) is drilled with bolt holes (4), and the dust-proof oil seal (5) and the bushing with oil holes (2) are installed in the oil seal cover (1); the oil seal cover (1) is also equipped with a lubricating grease nipple (3) at the place where the bushing with oil holes (2) is installed.