Pin shaft and shaft sleeve connecting mechanism of excavator

Abstract

The utility model discloses a pin shaft and shaft sleeve connecting mechanism of an excavator, which relates to the technical field of excavator accessories and comprises a connecting arm, a shaft sleeve body is mounted in the connecting arm, a pin shaft body is mounted in the shaft sleeve body, and a fixing ring is slidably connected to the outer surface of the shaft sleeve body. A limiting ring is fixedly connected to the outer surface of the fixing ring, a pressing ring is installed outside the fixing ring, a pressing plate is slidably connected to the outer surface of the pressing ring, a moving block is slidably connected to the outer surface of the pressing plate, a spring is fixedly connected to the outer surface of the moving block, and through cooperation of the spring, the limiting ring, the pressing ring and the spring, the moving block can move up and down. The fixing ring can be connected through the limiting ring, the shaft sleeve body is prevented from deviating in the using process, when the shaft sleeve body deviates, the internal sealing component can be tightly attached to the interior of the shaft sleeve through pushing of the pressing ring, and the problem that the connecting position of the shaft sleeve body and the pin shaft body is affected after the shaft sleeve body deviates is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator accessories, in particular to a pin and shaft sleeve connecting mechanism of an excavator. Background Art

[0002] An excavator is a machine that can replace human labor for digging. It includes structures such as a bucket and a driving component. When in use, the bucket can be controlled by the driving component to perform work such as digging. It has the characteristics of high work efficiency and easy use.

[0003] The bucket on the excavator is connected to the connecting arm through a pin and a sleeve. The sleeve can reduce the wear of the pin and make the pin have a longer service life. The sleeve and the connecting arm are generally connected by an interference fit, which is convenient for better fixation of the pin. When the bucket on the excavator is in use, it will be affected by its own weight and the influence of heavy objects, which will generate a force along the axial direction on the sleeve. During use, the sleeve and the connecting arm will be out of contact. At this time, the tightness of the connection between the pin and the sleeve will be affected, and the sealing gasket installed at the sleeve and the pin will be ejected. At this time, the sealing effect between the sleeve and the pin will be reduced, which will cause dust and other impurities in the site to enter the connection between the sleeve and the pin, aggravating the wear of the pin and causing adverse effects. To this end, we propose a pin and sleeve connection mechanism for an excavator. Utility Model Content

[0004] The utility model aims to provide a pin shaft and shaft sleeve connection mechanism for an excavator, which has the characteristic of preventing the shaft sleeve body from being easily deviated.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pin shaft and sleeve connection mechanism of an excavator, comprising a connecting arm, a sleeve body is installed inside the connecting arm, a pin shaft body is installed inside the sleeve body, a fixing ring is slidably connected to the outer surface of the sleeve body, a limiting ring is fixedly connected to the outer surface of the fixing ring, a fixing hole is opened inside the limiting ring, a fixing piece is slidably connected to the inside of the fixing hole, a sealing gasket 1 is installed inside the fixing ring, a sealing gasket 2 is installed inside the fixing ring, a pressure ring is installed outside the fixing ring, a pressure plate is slidably connected to the outer surface of the pressure ring, a moving block is slidably connected to the outer surface of the moving block, and a spring is fixedly connected to the outer surface of the moving block.

[0006] In order to fix the fixing ring and the limiting ring, as a preferred pin and sleeve connection mechanism of an excavator of the utility model, the outer surface of the fixing piece is slidably connected to the inside of the fixing ring, and the outer surface of the fixing piece is threadedly connected to the inside of the sleeve body.

[0007] In order to install and fix sealing gasket 1 and sealing gasket 2, as a preferred pin shaft and sleeve connection mechanism of an excavator of the utility model, a No. 1 slide groove is opened inside the fixing ring, and sealing gasket 1 is installed inside the No. 1 slide groove, and a No. 2 slide groove is opened inside the fixing ring, and sealing gasket 2 is installed inside the No. 2 slide groove.

[0008] In order to tighten sealing gasket 1 and sealing gasket 2, as a preferred pin shaft and sleeve connection mechanism of an excavator of the utility model, the outer surface of the pressure ring is slidably connected to the inside of the No. 1 slide groove and the No. 2 slide groove, and the outer surface of the pressure ring is slidably connected to the outer surface of sealing gasket 1 and sealing gasket 2.

[0009] In order to seal the sleeve body and the fixing ring, as a preferred pin shaft and sleeve connection mechanism of an excavator of the utility model, the outer surfaces of the sealing gasket 1 and the sealing gasket 2 are both slidably connected to the outer surface of the sleeve body, and the outer surface of the pressure plate is slidably connected to the inside of the fixing ring.

[0010] In order to compress and push the pressure ring, as a preferred pin shaft and sleeve connection mechanism of an excavator of the utility model, the interior of the fixed ring is fixedly connected with a fixed cylinder, the outer surface of the spring away from the moving block is fixedly connected to the inner wall of the fixed cylinder, and the outer surface of the moving block is slidably connected to the inner wall of the fixed cylinder.

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

[0012] 1. The utility model cooperates between the spring, the limit ring, the pressure ring and the spring. The limit ring can be used to connect the fixing ring. At this time, the connection between the fixing ring and the limit ring can stably fix the sleeve body inside the connecting arm to avoid the sleeve body from shifting during use. The spring can push the pressure ring to move. When the sleeve body shifts, the pressure ring can push the internal sealing component to fit tightly against the inside of the sleeve to avoid failure of the internal sealing component, thereby achieving the effect of strengthening the sealing of the connection between the sleeve body and the pin body, avoiding the problem that the connection between the sleeve body and the pin body is affected by the shift of the sleeve body, and preventing dust from entering the connection to aggravate the wear of the pin body.

[0013] 2. The utility model provides components such as sealing gasket 1 and sealing gasket 2, through which the inner and outer parts of the shaft sleeve body can be sealed. After being pushed by the pressure ring, the sealing gasket 1 and the sealing gasket 2 can always be in close contact with the shaft sleeve body to ensure the sealing effect. By providing components such as fixing parts, the fixing ring and the limiting ring can be connected through the fixing parts. At this time, the two ends of the shaft sleeve body can be fixed, and the shaft sleeve body can be limited inside the connecting arm to prevent the shaft sleeve body from easily shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall structure diagram of the utility model;

[0015] Figure 2 This is a structural diagram of the shaft sleeve body component of the utility model;

[0016] Figure 3 This is a structural diagram of the fixing ring component of the utility model;

[0017] Figure 4 This is a front structural diagram of the fixing ring component of the utility model;

[0018] Figure 5 This is a structural diagram of the main components of the utility model;

[0019] Figure 6 This is a partial enlarged structural diagram of Figure A of the utility model.

[0020] In the figure: 1. connecting arm; 2. sleeve body; 3. pin body; 4. fixing ring; 5. limiting ring; 6. fixing hole; 7. fixing piece; 8. sealing gasket 1; 9. sealing gasket 2; 10. pressing ring; 11. pressing plate; 12. moving block; 13. spring; 14. slide slot No. 1; 15. slide slot No. 2; 16. fixing cylinder. DETAILED DESCRIPTION

[0021] See also Figures 1 to 6 A pin shaft and sleeve connection mechanism of an excavator comprises a connecting arm 1, a sleeve body 2 is installed inside the connecting arm 1, a pin shaft body 3 is installed inside the sleeve body 2, a fixing ring 4 is slidably connected to the outer surface of the sleeve body 2, a limiting ring 5 is fixedly connected to the outer surface of the fixing ring 4, a fixing hole 6 is opened inside the limiting ring 5, a fixing piece 7 is slidably connected to the inside of the fixing hole 6, a sealing gasket 8 is installed inside the fixing ring 4, a sealing gasket 9 is installed inside the fixing ring 4, a pressing ring 10 is installed outside the fixing ring 4, a pressing plate 11 is slidably connected to the outer surface of the pressing plate 11, a moving block 12 is slidably connected to the outer surface of the moving block 12, and a spring 13 is fixedly connected to the outer surface of the moving block 12.

[0022] In this embodiment: when in use, the fixing ring 4 and the limiting ring 5 can be fixed by the fixing part 7, and the fixing ring 4 can be controlled to be connected to the sleeve body 2. The limiting ring 5 is a wedge-shaped structure, which can fix the two ends of the sleeve body 2 to prevent the sleeve body 2 from deviating inside the connecting arm 1 during use. The pressure ring 10 can be controlled by the push of the spring 13 to push the sealing gasket 1 8 and the sealing gasket 2 9 tightly, so that the outer surfaces of the sealing gasket 1 8 and the sealing gasket 2 9 can be pressed against the sleeve body 2, and the connection between the sleeve body 2 and the pin shaft body 3 can be better sealed. When the sleeve body 2 deviates after being used for a period of time, the spring 13 pushes the upper and lower sealing gaskets 1 8 and the sealing gasket 2 9 to move to ensure the sealing of the connection, and prevent the sealing gasket 1 8 and the sealing gasket 2 9 from being separated from the contact with the sleeve body 2, causing dust and other impurities to enter the internal connection.

[0023] As a technical optimization solution of the utility model, the outer surface of the fixing member 7 is slidably connected to the inside of the fixing ring 4 , and the outer surface of the fixing member 7 is threadedly connected to the inside of the sleeve body 2 .

[0024] In this embodiment, the fixing ring 4 can be fixed to the outside of the sleeve body 2 by the fixing member 7 , and the sleeve body 2 can be sealed by cooperating with the fixing ring 4 and the limiting ring 5 .

[0025] As a technical optimization solution of the utility model, a No. 1 slide groove 14 is opened inside the fixed ring 4, and a sealing gasket 8 is installed inside the No. 1 slide groove 14. A No. 2 slide groove 15 is opened inside the fixed ring 4, and a sealing gasket 2 9 is installed inside the No. 2 slide groove 15.

[0026] In this embodiment: the No. 1 slide groove 14 and the No. 2 slide groove 15 are used to facilitate the installation of the sealing gasket 1 8 and the sealing gasket 2 9, and to facilitate the control of the surfaces of the sealing gasket 1 8 and the sealing gasket 2 9 to better fit with the surface of the sleeve body 2.

[0027] As a technical optimization solution of the utility model, the outer surface of the pressure ring 10 is slidably connected to the inside of the No. 1 slide groove 14 and the No. 2 slide groove 15, and the outer surface of the pressure ring 10 is slidably connected to the outer surfaces of the sealing gasket 1 8 and the sealing gasket 2 9.

[0028] In this embodiment: the front ends of the sealing gasket 1 8 and the sealing gasket 2 9 can be fixed by the pressure ring 10, which can avoid the surface deviation of the sealing gasket 1 8 and the sealing gasket 2 9 when they are fitted together, thereby ensuring the fixing effect of the sealing gasket 1 8 and the sealing gasket 2 9.

[0029] As a technical optimization solution of the utility model, the outer surfaces of the sealing gasket 1 8 and the sealing gasket 2 9 are both slidably connected to the outer surface of the sleeve body 2 , and the outer surface of the pressure plate 11 is slidably connected to the inside of the fixing ring 4 .

[0030] In this embodiment, the connection of the sleeve body 2 can be sealed by using a sealing gasket 1 8 and a sealing gasket 2 9 , and both sides of the sleeve body 2 can be sealed to prevent dust from entering the interior of the sleeve body 2 .

[0031] As a technical optimization solution of the utility model, the interior of the fixed ring 4 is fixedly connected with a fixed cylinder 16, the outer surface of the spring 13 away from the moving block 12 is fixedly connected to the inner wall of the fixed cylinder 16, and the outer surface of the moving block 12 is slidably connected to the inner wall of the fixed cylinder 16.

[0032] In this embodiment: under the action of the spring 13, the moving block 12 further pushes the pressure ring 10, and at this time the pressure ring 10 can squeeze the sealing gasket 1 8 and the sealing gasket 2 9. When the sleeve body 2 is offset, the spring 13 further pushes the sealing gasket 1 8 and the sealing gasket 2 9 to fit tightly against the outer surface of the sleeve body 2. In this process, the tightness of the connection between the sleeve body 2 and the pin shaft body 3 can be guaranteed, and the displacement of the sleeve body 2 can prevent dust at the excavator site from entering the connection.

[0033] Working principle: When in use, the fixing ring 4 and the limiting ring 5 can be fixed to the outside of the sleeve body 2 through the fixing part 7. At this time, the two ends of the sleeve body 2 can be fixed through the wedge-shaped structure of the limiting ring 5 to prevent the sleeve body 2 from easily shifting during use. When the sleeve body 2 is shifted due to external force, the spring 13 can push the moving block 12 to move. At this time, the moving block 12 can squeeze the sealing gasket 1 8 and the sealing gasket 2 9 through the pressure ring 10, and can seal the connection between the sleeve body 2 and the pin shaft body 3, and the sleeve body 2 and the inner wall of the connecting arm 1, to prevent the sealing gasket 1 8 and the sealing gasket 2 9 from shifting and causing dust at the excavator site to enter the interior of the workpiece.

[0034] 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. A pin and sleeve connection mechanism for an excavator, comprising a connecting arm (1), characterized in that: A shaft sleeve body (2) is installed inside the connecting arm (1), a pin shaft body (3) is installed inside the shaft sleeve body (2), a fixing ring (4) is slidably connected to the outer surface of the shaft sleeve body (2), a limiting ring (5) is fixedly connected to the outer surface of the fixing ring (4), a fixing hole (6) is opened inside the limiting ring (5), a fixing piece (7) is slidably connected inside the fixing hole (6), a sealing gasket 1 (8) is installed inside the fixing ring (4), a sealing gasket 2 (9) is installed inside the fixing ring (4), a pressure ring (10) is installed outside the fixing ring (4), a pressure plate (11) is slidably connected to the outer surface of the pressure ring (10), a moving block (12) is slidably connected to the outer surface of the moving block (12), and a spring (13) is fixedly connected to the outer surface of the moving block (12).

2. The pin and sleeve connection mechanism of an excavator according to claim 1, characterized in that: The outer surface of the fixing member (7) is slidably connected to the inside of the fixing ring (4), and the outer surface of the fixing member (7) is threadedly connected to the inside of the sleeve body (2).

3. The pin and sleeve connection mechanism of an excavator according to claim 1, characterized in that: The fixing ring (4) has a first slide groove (14) formed inside, and the sealing gasket (8) is installed inside the first slide groove (14). The fixing ring (4) has a second slide groove (15) formed inside, and the sealing gasket (9) is installed inside the second slide groove (15).

4. The pin and sleeve connection mechanism of an excavator according to claim 3, characterized in that: The outer surface of the pressure ring (10) is slidably connected to the interior of the No. 1 slide groove (14) and the No. 2 slide groove (15), and the outer surface of the pressure ring (10) is slidably connected to the outer surfaces of the sealing gasket 1 (8) and the sealing gasket 2 (9).

5. The pin and sleeve connection mechanism of an excavator according to claim 1, characterized in that: The outer surfaces of the sealing gasket 1 (8) and the sealing gasket 2 (9) are both slidably connected to the outer surface of the shaft sleeve body (2), and the outer surface of the pressure plate (11) is slidably connected to the inside of the fixing ring (4).

6. The pin and sleeve connection mechanism of an excavator according to claim 1, characterized in that: The interior of the fixing ring (4) is fixedly connected with a fixing cylinder (16), the outer surface of the spring (13) away from the moving block (12) is fixedly connected with the inner wall of the fixing cylinder (16), and the outer surface of the moving block (12) is slidably connected with the inner wall of the fixing cylinder (16).

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