Connecting pin shaft of excavator

Abstract

The utility model relates to the technical field of excavator components, in particular to an excavator connecting pin shaft which comprises a pin shaft body, a shaft sleeve is rotatably connected to the outer wall of the pin shaft body, a concave hole is formed in the outer wall of the shaft sleeve, an oil injection hole is formed in the inner side of the concave hole, and an oil groove communicated with the oil injection hole is formed in the inner side of the shaft sleeve. The inner wall of the oil groove is fixedly connected with a first oil combing plate and a second oil combing plate which are arranged in parallel, and the lower end face of the first oil combing plate and the lower end face of the second oil combing plate are each fixedly connected with a plurality of oil combing teeth which are evenly distributed. The lower end face of the first oil combing plate and the lower end face of the second oil combing plate are each fixedly connected with a plurality of evenly-distributed oil combing teeth, the oil combing effect is achieved, lubricating oil is evenly distributed and guided, the multiple oil combing teeth located on the outer wall of the first oil combing plate and the outer wall of the second oil combing plate are distributed in a staggered mode, and therefore the lubricating oil is guided to each position of an oil groove, and the lubricating oil coating effect is improved. Therefore, the service lives of the pin shaft and the shaft sleeve are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator components, in particular to an excavator connecting pin shaft. Background Art

[0002] At present, the pin and sleeve connection mechanism of the excavator mainly includes a pin and a sleeve. The sleeve is sleeved on the pin. There is a radial hole on the sleeve corresponding to the sleeve, and there is an axial hole between the end face of the pin and the radial hole.

[0003] The pin shaft usually needs to be lubricated regularly during use. The operation steps are to inject lubricating oil into the axial hole. After the lubricating oil passes through the axial hole and the radial hole, it enters the position where the sleeve and the pin shaft are connected from both ends of the radial hole for lubrication. When this pin shaft and sleeve connection mechanism is in use, the lubricating oil is generally concentrated between the sleeve and the pin shaft near the radial hole, and the lubricating oil between other parts of the sleeve and the pin shaft is less. The lubricating oil is unevenly distributed, resulting in the sleeve and the pin shaft that are far away from the radial hole being easily worn, and the service life of the pin shaft and sleeve connection mechanism is short. Utility Model Content

[0004] The utility model aims to provide a connecting pin shaft for an excavator, which has the characteristics of good lubricating oil coating effect and prolonged service life of the pin shaft and the shaft sleeve.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an excavator connecting pin shaft, comprising a pin shaft, the outer wall of the pin shaft is rotatably connected to a sleeve, the outer wall of the sleeve is provided with a concave hole, the inner side of the concave hole is provided with an oil filling hole, the inner side of the sleeve is provided with an oil groove connected to the oil filling hole, the inner wall of the oil groove is fixedly connected with a first oil combing plate and a second oil combing plate arranged in parallel, and the lower end surfaces of the first oil combing plate and the second oil combing plate are fixedly connected with a plurality of evenly distributed oil combing teeth.

[0006] In order to evenly apply the lubricating oil to the outer wall of the pin shaft, as a preferred embodiment of the utility model for an excavator connecting pin shaft, a plurality of oil combing teeth located on the outer walls of the first oil combing plate and the second oil combing plate are staggered.

[0007] In order to facilitate opening and closing of the sealing cover, as a preferred excavator connecting pin shaft of the utility model, the inner side of the concave hole is detachably connected with a sealing cover, and the upper end surface of the sealing cover is fixedly connected with a rotating handle.

[0008] In order to improve the sealing effect, as a preferred embodiment of the excavator connecting pin shaft of the utility model, oil seals are arranged on both the left and right sides of the outer wall of the sleeve.

[0009] In order to facilitate the application of lubricating oil to the outer wall of the pin shaft, as a preferred embodiment of the utility model for an excavator connecting pin shaft, the side of the oil groove away from the oil filling hole is an open structure.

[0010] In order to improve the sealing effect of the sealing cover, as a preferred embodiment of the excavator connecting pin of the utility model, the sealing cover is made of rubber material.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] When filling oil, open the sealing cover and inject the lubricating oil into the oil tank through the oil filling hole. During the injection process, the angle of the pin shaft can be rotated and adjusted so that the lubricating oil fills the inner side of the oil tank. After injection, close the sealing cover and seal it. Then rotate the sleeve to make it rotate on the outer wall of the pin shaft. During the rotation, the lubricating oil is evenly coated on the outer wall of the pin shaft. By arranging the first oil combing plate and the second oil combing plate, the lower end surfaces of the first oil combing plate and the second oil combing plate are fixedly connected with a plurality of evenly distributed oil combing teeth, which play an oil combing effect, so that the lubricating oil is evenly distributed and guided. The plurality of oil combing teeth located on the outer walls of the first oil combing plate and the second oil combing plate are staggered, so as to guide the lubricating oil to every part of the oil tank, thereby improving the lubricating oil coating effect and extending the service life of the pin shaft and the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a top view of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the sealing cover of the utility model in a closed state;

[0015] Figure 3 This is a side sectional structural diagram of the entire utility model;

[0016] Figure 4 This is a side view structural diagram of the first oil combing plate and the second oil combing plate of the utility model;

[0017] Figure 5 This is the overall external structure diagram of the utility model from a side view.

[0018] In the figure: 1. pin shaft; 2. bushing; 3. recessed hole; 4. oil filling hole; 5. oil groove; 6. first oil combing plate; 7. second oil combing plate; 8. oil combing teeth; 9. sealing cover; 10. turning handle; 11. oil seal. DETAILED DESCRIPTION

[0019] See also Figures 1 to 5 A connecting pin shaft of an excavator comprises a pin shaft 1, the outer wall of the pin shaft 1 is rotatably connected with a shaft sleeve 2, the outer wall of the shaft sleeve 2 is provided with a concave hole 3, the inner side of the concave hole 3 is provided with an oil filling hole 4, the inner side of the shaft sleeve 2 is provided with an oil groove 5 connected with the oil filling hole 4, the inner wall of the oil groove 5 is fixedly connected with a first oil combing plate 6 and a second oil combing plate 7 arranged in parallel, and the lower end surfaces of the first oil combing plate 6 and the second oil combing plate 7 are fixedly connected with a plurality of evenly distributed oil combing teeth 8.

[0020] In this embodiment: when filling oil, open the sealing cover 9, and inject the lubricating oil into the oil groove 5 through the oil filling hole 4. During the injection process, the angle of the pin shaft 1 can be rotated and adjusted so that the lubricating oil fills the inner side of the oil groove 5. After injection, close the sealing cover 9 to seal it, and then rotate the sleeve 2 to make it rotate on the outer wall of the pin shaft 1. During the rotation, the lubricating oil is evenly coated on the outer wall of the pin shaft 1. By arranging the first oil combing plate 6 and the second oil combing plate 7, the lower end surfaces of the first oil combing plate 6 and the second oil combing plate 7 are fixedly connected with a plurality of evenly distributed oil combing teeth 8, which play an oil combing effect, so that the lubricating oil is evenly distributed and guided, and the plurality of oil combing teeth 8 located on the outer walls of the first oil combing plate 6 and the second oil combing plate 7 are staggered, so as to guide the lubricating oil to every part of the oil groove 5, thereby improving the lubricating oil coating effect, thereby extending the service life of the pin shaft 1 and the sleeve 2.

[0021] As a technical optimization solution of the utility model, a plurality of oil combing teeth 8 located on the outer walls of the first oil combing plate 6 and the second oil combing plate 7 are staggered in distribution.

[0022] In this embodiment: the plurality of oil combing teeth 8 located on the outer walls of the first oil combing plate 6 and the second oil combing plate 7 are staggered and distributed, so as to guide the lubricating oil to every part of the oil groove 5, thereby improving the lubricating oil coating effect.

[0023] As a technical optimization solution of the utility model, a sealing cover 9 is detachably connected to the inner side of the concave hole 3 , and a rotating handle 10 is fixedly connected to the upper end surface of the sealing cover 9 .

[0024] In this embodiment: the inner side of the concave hole 3 is detachably connected with a sealing cover 9, which is convenient for closing the sealing cover 9 to block the oil filling hole 4, and the sealing cover 9 is convenient for opening and closing by turning the handle 10.

[0025] As a technical optimization solution of the present utility model, oil seals 11 are provided on both the left and right sides of the outer wall of the shaft sleeve 2 .

[0026] In this embodiment, oil seals 11 are provided on both left and right sides of the outer wall of the shaft sleeve 2 to improve the sealing performance between the shaft sleeve 2 and the pin shaft 1 and prevent the lubricating oil from leaking out.

[0027] As a technical optimization solution of the utility model, the side of the oil groove 5 away from the oil filling hole 4 is an open structure.

[0028] In this embodiment, the side of the oil groove 5 away from the oil filling hole 4 is an open structure, so that the lubricating oil inside the oil groove 5 can contact the outer wall of the pin shaft 1 to facilitate lubrication.

[0029] As a technical optimization solution of the present utility model, the sealing cover 9 is made of rubber.

[0030] In this embodiment, the sealing cover 9 is made of rubber material, has good sealing performance, and prevents the lubricating oil from leaking.

[0031] Working principle: When filling oil, open the sealing cover 9 and inject the lubricating oil into the oil groove 5 through the oil filling hole 4. During the injection process, the angle of the pin shaft 1 can be rotated and adjusted so that the lubricating oil fills the inner side of the oil groove 5. After injection, close the sealing cover 9 to seal it, and then rotate the sleeve 2 to make it rotate on the outer wall of the pin shaft 1. During the rotation, the lubricating oil is evenly coated on the outer wall of the pin shaft 1. By arranging the first oil combing plate 6 and the second oil combing plate 7, the lower end surfaces of the first oil combing plate 6 and the second oil combing plate 7 are fixedly connected with a plurality of evenly distributed oil combing teeth 8, which play an oil combing effect, so that the lubricating oil is evenly distributed and guided, and the plurality of oil combing teeth 8 located on the outer walls of the first oil combing plate 6 and the second oil combing plate 7 are staggered, so as to guide the lubricating oil to every part of the oil groove 5, thereby improving the lubricating oil coating effect and extending the service life of the pin shaft 1 and the sleeve 2.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An excavator connecting pin, comprising a pin (1), characterized in that: The outer wall of the pin shaft (1) is rotatably connected to a shaft sleeve (2), a concave hole (3) is provided on the outer wall of the shaft sleeve (2), an oil filling hole (4) is provided on the inner side of the concave hole (3), an oil groove (5) connected to the oil filling hole (4) is provided on the inner side of the shaft sleeve (2), a first oil combing plate (6) and a second oil combing plate (7) arranged in parallel are fixedly connected to the inner wall of the oil groove (5), and the lower end surfaces of the first oil combing plate (6) and the second oil combing plate (7) are fixedly connected to a plurality of evenly distributed oil combing teeth (8).

2. The connecting pin shaft for an excavator according to claim 1, characterized in that: A plurality of oil combing teeth (8) located on the outer walls of the first oil combing plate (6) and the second oil combing plate (7) are staggered and distributed.

3. The connecting pin shaft for an excavator according to claim 1, characterized in that: A sealing cover (9) is detachably connected to the inner side of the concave hole (3), and a rotating handle (10) is fixedly connected to the upper end surface of the sealing cover (9).

4. The excavator connecting pin according to claim 1, characterized in that: Oil seals (11) are provided on both left and right sides of the outer wall of the shaft sleeve (2).

5. The excavator connecting pin according to claim 1, characterized in that: The side of the oil groove (5) away from the oil filling hole (4) is an open structure.

6. The connecting pin shaft for an excavator according to claim 3, characterized in that: The sealing cover (9) is made of rubber.

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