CN203430981U - Novel lubricating structure for hinge pin of loading machine - Google Patents

Abstract

A new type of lubricating structure for loader pins. The pin passes through the secondary connector and the main connector. The shaft sleeve is placed in the inner hole of the main connector, and the oil is sealed on both sides of the shaft sleeve. The main connector consists of a main body and a special-shaped flange. Composition, the counterbore on the special-shaped flange communicates with the inner hole through the oil passage, the outer side of the inner hole is a slope, and there are outer radial oil grooves on both sides of the outer circumference of the bushing, and the outer circumference is evenly distributed in the axial direction. There is an oil hole in the middle of the outer axial oil groove, and the oil hole is connected to the inner radial oil groove on the inner circle of the shaft sleeve. There are inner oil grooves on both sides of the inner radial oil groove, and a sealing ring is installed on the inclined surface outside the inner hole of the special-shaped flange. An oil cup is installed in the counterbore of the special-shaped flange. Because the utility model adopts the above-mentioned structure, the strength of the pin shaft is increased, so that the pin shaft is not easily deformed and broken, the service life of the pin shaft is improved, and the failure rate of the loader is reduced.

Description

New lubricating structure for pin shaft of loader

technical field

The utility model relates to a pin shaft structure of a loader.

Background technique

At present, the lubrication of the pin shaft of the loader is to drill an oil hole with a counterbore on the axial end face of the pin shaft, install an oil cup on the counterbore, and drill an oil hole in the radial direction of the pin shaft, so that the lubricating grease enters the axial direction through the oil cup. The oil hole, through the radial oil hole to the outer surface of the pin shaft, lubricates the pin shaft and reduces the friction between the pin shaft and the bushing. This structure affects the strength of the pin shaft, and the pin shaft is easily deformed and broken. Loader failure rate increased.

Contents of the invention

The purpose of the utility model is to provide a new lubricating structure for the pin shaft of a loader which can enhance the strength of the pin shaft, prevent the deformation and fracture of the pin shaft, increase its service life, and reduce the failure rate of the loader.

The utility model is realized in the following way: the pin shaft passes through the secondary connecting piece and the main connecting piece, the shaft sleeve is placed in the inner hole of the main connecting piece, the oil is sealed on both sides of the shaft sleeve, the main connecting piece is composed of a main body and a special-shaped flange, The counterbore on the special-shaped flange communicates with the inner hole through the oil passage. The outer side of the inner hole is a slope. There are outer radial oil grooves on both sides of the outer circumference of the bushing. An axial oil groove, an oil hole is arranged in the middle of the outer axial oil groove, and the oil hole is connected to the inner radial oil groove on the inner circle of the shaft sleeve, and there are inner oil grooves on both sides of the inner radial oil groove.

A sealing ring is arranged on the inclined surface outside the inner hole of the special-shaped flange, and an oil cup is arranged in the counterbore of the special-shaped flange.

Because the utility model adopts the above-mentioned structure, the strength of the pin shaft is increased, so that the pin shaft is not easily deformed and broken, the service life of the pin shaft is improved, and the failure rate of the loader is reduced.

Description of drawings

Fig. 1 is the structural diagram of the utility model embodiment.

Fig. 2 is a structural diagram of the main connector in Fig. 1 .

Fig. 3 is a structural diagram of the special-shaped flange in Fig. 2 .

Fig. 4 is a three-dimensional structure diagram of the special-shaped flange in Fig. 2 .

Fig. 5 is a structural diagram of the shaft sleeve in Fig. 1 .

Fig. 6 is a three-dimensional structure diagram of the shaft sleeve in Fig. 1 .

In the figure, 1 secondary connecting piece, 2 main connecting piece, 3 pin shaft, 4 seal ring, 5 oil cup, 6 shaft sleeve, 7 oil seal, 8 bolt, 9 spring washer, 10 flat washer, 21 main body, 22 special-shaped flange, 221 counterbore, 222 oil channel, 223 inclined plane, 224 inner hole, 61 outer radial oil groove, 62 outer axial oil groove, 63 oil hole, 64 inner oil groove, 65 inner radial oil groove.

Detailed ways

Embodiment: The pin shaft 3 passes through the secondary connecting piece 1 and the main connecting piece 2 to connect them together, and is fixed on the secondary connecting piece 1 with bolts 8, spring washers 9 and flat washers 10, and the bushing 6 is mounted on the main connecting piece. In the inner hole of the connector 2, the oil seal 7 is installed on both sides of the shaft sleeve 6, which can prevent the grease from seeping out. The main connector 2 is composed of a main body 21 and a special-shaped flange 22. The special-shaped flange 22 is a steel casting. The counterbore 221 on the flange 22 communicates with the inner hole 224 through the oil passage 222. The outer side of the inner hole 224 is a slope 223. There are outer radial oil grooves 61 on both sides of the outer circumference of the shaft sleeve 6, and there are oil grooves 61 in the outer circumference axially evenly distributed on the outer circumference. The outer axial oil groove 62 connected to the oil groove 61 has an oil hole 63 in the middle of the outer axial oil groove 62. The oil hole 63 is connected to the inner radial oil groove 65 on the inner circle of the sleeve 6, and there are inner oil grooves 64 on both sides of the inner radial oil groove 65. The inclined surface 223 outside the inner hole of the special-shaped flange 22 is provided with a dust-proof seal ring 4, and the counterbore 221 of the special-shaped flange 222 is provided with an oil cup 5 for injecting grease.

As shown in Figure 1, the new lubricating structure of the loader pin shaft invented by the utility model is composed of the main connector 2, the auxiliary connector 1, the pin shaft 3, the sealing ring 4, the oil cup 5, the shaft sleeve 6, the oil seal 7, Bolt 8, spring washer 9, flat washer 10 form. Wherein, the main connector 2 is composed of a main body 21 and a special-shaped flange 22. As shown in FIG. It directly leads to the inner hole 224, and the outer side of the inner hole 224 is milled with an inclined surface 223, as shown in Figure 3 and Figure 4, the outer circumference of the shaft sleeve 6 is milled with outer radial oil grooves 61 on both sides, and the outer circumference is milled with outer shafts evenly distributed in the axial direction The oil groove 62 communicates with the outer radial oil groove 61. There is an oil hole 63 in the middle of the outer axial oil groove 62. The oil hole 63 is connected to the inner radial oil groove 65 on the inner circle of the sleeve 6. There are inner oil grooves 64 on both sides of the inner radial oil groove 65. , as shown in Figure 5 and Figure 6, the shaft sleeve 6 is installed in the inner hole 224 of the main connector 2, and the oil seal 7 is installed on both sides of the shaft sleeve 6 to prevent grease from seeping out. Sealing ring 4 is contained on the slope 223 of special-shaped flange 22, is used for dustproof. Oil cup 5 is contained in the counterbore 221 of special-shaped flange 22, is used for injecting grease. The pin shaft 3 passes through the secondary connecting piece 1 and the main connecting piece 2, so that the two are connected together, and is fixed on the secondary connecting piece 1 with a bolt 8, a spring washer 9, and a flat washer 10.

The lubricating process of the present utility model is as follows: aim at the oil cup 5 with a grease gun and inject the grease into the oil passage 222 of the special-shaped flange 22, and flow into the outer radial oil groove 61 of the shaft sleeve 6 through the oil passage 222, and The oil groove 62 flows into the inner radial oil groove 65 through the oil hole 63 , and lubricates the pin shaft 3 through the inner oil groove 64 .

Claims (2)

1. A new type of lubricating structure for the pin shaft of a loader, the pin shaft passes through the secondary connector and the main connector, the shaft sleeve is placed in the inner hole of the main connector, and the oil is sealed on both sides of the shaft sleeve, the characteristics are: the main connector It consists of a main body and a special-shaped flange. The counterbore on the special-shaped flange communicates with the inner hole through the oil passage. The outer side of the inner hole is a slope. The outer axial oil groove connected with the outer radial oil groove has an oil hole in the middle of the outer axial oil groove. 2. The new lubricating structure of the loader pin according to claim 1, characterized in that: a sealing ring is installed on the slope outside the inner hole of the special-shaped flange, and an oil cup is installed in the counterbore of the special-shaped flange.

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