Gear column rotary table fixing device

Abstract

The utility model relates to the technical field of engineering machinery hoisting, in particular to a gear column rotary table fixing device which comprises a gear column and an intersecting body, and further comprises a rotary table bottom plate fixed to the gear column. The gear column rotary table fixing structure solves the problems that in the operation process of an existing gear column rotary table fixing structure, an O-shaped ring is prone to being abraded, a gear column is rusted, the internal structure is damaged, and the service life of the gear column is prolonged. The gear column rotary table fixing structure is not prone to being abraded in the long-term operation process, external water is prevented from entering the structure to damage the internal structure, and the service life of the gear column rotary table is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery hoisting, in particular to a fixing device for a gear column turntable. Background Art

[0002] For a truck-mounted crane with a rack cylinder slewing form, during installation, the gear column turntable is installed inside the penetrator of the base, and positioning is carried out through the lower side of the turntable bottom plate and the upper side of the penetrator, so as to complete the whole assembly and prevent external moisture from entering the interior.

[0003] However, for a truck-mounted crane with a rack cylinder slewing form, during operation, since the gear column and the penetrator are dust-proof and waterproof through an O-ring, during long-term rotation, the O-ring will rub against the gear column and the penetrator, which is likely to cause wear of the O-ring, resulting in external moisture entering its interior, causing rust of the gear column and damage to the internal structure, and reducing the service life of the gear column turntable.

[0004] Therefore, the utility model provides a fixing device for a gear column turntable. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a fixing device for a gear column turntable, which solves the problem that in the existing fixing structure of the gear column turntable, the O-ring is prone to wear during operation, resulting in rust of the gear column and damage to the internal structure. It realizes that in the process of long-term operation of the fixing structure of the gear column turntable, it is not easy to wear, avoids external moisture from entering and causing damage to the internal structure, and greatly improves the service life of the gear column turntable.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions: a fixing device for a gear column turntable, comprising: a gear column and a penetrator, the gear column is rotatably arranged in the penetrator, and further comprising:

[0007] A turntable bottom plate, fixed to the gear column;

[0008] A thrust washer, arranged at the bottom of the turntable bottom plate and abutted against the top of the penetrator, for rotational sealing between the turntable bottom plate and the penetrator.

[0009] Preferably, a circular groove is formed on the turntable bottom plate, and is in embedded fit with the thrust washer.

[0010] Preferably, the gear column is provided with a flange, and the turntable bottom plate is fixed to the flange; an inclined surface is arranged on the outer side of the top of the flange, and the inclined surface and the turntable bottom plate form a clamping groove, and the inner side of the thrust washer extends into the clamping groove.

[0011] Preferably, the outer diameter of the circular groove is equal to the outer diameter of the thrust washer.

[0012] Preferably, the top and bottom of the intersecting body are respectively circular ring structures. An annular groove is provided inside the circular ring structure at the end of the intersecting body far from the turntable bottom plate. A retaining ring is connected between the inner side of the circular ring structure at the end of the intersecting body far from the turntable bottom plate and the gear column, and the retaining ring is located inside the annular groove.

[0013] Preferably, a plurality of oil cups are annularly arrayed on the side surface of the circular ring structure at the end of the intersecting body close to the turntable bottom plate. The plurality of oil cups are used to regularly inject lubricating oil into the intersecting body.

[0014] Preferably, a plurality of first oil holes are radially provided in an annular array on the side surface of the circular ring structure at the end of the intersecting body close to the turntable bottom plate, and a plurality of second oil holes are axially provided. The first oil holes are connected to the oil cups, the first oil holes and the second oil holes communicate with each other, and the second oil holes extend to the thrust washer.

[0015] Advantages of the present utility model:

[0016] 1. By providing a turntable bottom plate on the gear column in the present utility model, through the mutual cooperation of the turntable bottom plate and the thrust washer, during the rotation of the gear column, the thrust washer can seal it, ensuring the sealing performance, preventing foreign objects or moisture in the outside world from entering its interior, reducing wear, avoiding damage to the internal structure, and greatly improving the service life of the gear column turntable.

[0017] 2. By providing oil cups on the intersecting body in the present utility model, lubricating oil can be regularly injected into its interior through the oil cups, thereby reducing the friction between the gear column and the intersecting body and increasing the service life of the gear column turntable. Description of the drawings

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the whole of the present utility model.

[0019] Figure 2 It is a three-dimensional structure schematic diagram of the gear column and the turntable bottom plate of the present utility model.

[0020] Figure 3 It is a three-dimensional structure schematic diagram of the interior of the whole of the present utility model.

[0021] Figure 4 It is a sectional view of the whole of the present utility model.

[0022] In the figure: 1. Gear column; 11. Flange; 12. Inclined surface; 2. Turntable bottom plate; 3. Thrust washer; 4. Intersecting body; 5. Circular groove; 6. Retaining ring; 7. Oil cup; 8. First oil hole; 9. Second oil hole. Specific embodiments

[0023] The following further describes the usage method of the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0024] As Figures 1 to 4 shown, a fixing device for a gear column turntable includes: a gear column 1 and an intersection body 4. The gear column 1 is rotatably arranged in the intersection body 4, and further includes:

[0025] A turntable bottom plate 2, fixed to the gear column 1;

[0026] A thrust washer 3, arranged at the bottom of the turntable bottom plate 2 and abutting against the top of the intersection body 4, for rotational sealing between the turntable bottom plate 2 and the intersection body 4.

[0027] It can effectively avoid the problem of water entering the intersection body 4, prevent the internal transmission structure from rusting and damage, and ensure the reliability of product use.

[0028] A circular groove 5 is formed on the turntable bottom plate 2 and is in interference fit with the thrust washer 3. The thrust washer 3 can be clamped between the turntable bottom plate 2 and the gear column 1, thereby performing rotational sealing on it.

[0029] By adjusting the positioning points of the assembly and the positioning structure of the interference fit type, the O-ring is cancelled, and foreign objects are completely prevented from entering the intersection body 4, ensuring the sealing performance of the box body, preventing the wear or rust of structural parts caused by foreign objects entering, and increasing the overall reliability of use.

[0030] The gear column 1 is provided with a flange 11, and the turntable bottom plate 2 is fixed to the flange 11; an inclined surface 12 is provided on the outer side of the top of the flange 11, and the inclined surface 12 and the turntable bottom plate 2 form a clamping groove, and the inner side of the thrust washer 3 extends into the clamping groove.

[0031] The outer diameter of the circular groove 5 is equal to the outer diameter of the thrust washer 3. This is to ensure that the cooperation between the turntable bottom plate 2 and the thrust washer 3 can achieve a sealing effect.

[0032] The top and bottom of the intersection body 4 are respectively circular ring structures. An annular groove is formed on the inner side of the circular ring structure at one end of the intersection body 4 away from the turntable bottom plate 2. A retaining ring 6 is connected between the inner side of the circular ring structure at one end of the intersection body 4 away from the turntable bottom plate 2 and the gear column 1, and the retaining ring 6 is located inside the annular groove.

[0033] A plurality of oil cups 7 are annularly arranged on the side surface of the circular ring structure at one end of the intersection body 4 close to the turntable bottom plate 2. The plurality of oil cups 7 are used to regularly inject lubricating oil into the intersection body 4. Lubricating oil is regularly injected into the inner side through the oil cups 7 to ensure the smooth rotation of the turntable and reduce the wear between the assembled parts.

[0034] On the side of the annular structure at one end of the intersecting body 4 close to the turntable base plate 2, a plurality of first oil holes 8 are radially arranged in an annular array, and a plurality of second oil holes 9 are axially arranged. The first oil holes 8 are connected to the oil cup 7. The first oil holes 8 and the second oil holes 9 communicate with each other, and the second oil holes 9 extend to the thrust washer 3. When lubricating oil is injected into the oil cup 7, it will enter between the gear column 1 and the intersecting body 4, and between the intersecting body 4 and the thrust washer 3 through the first oil holes 8 and the second oil holes 9 respectively, so as to lubricate them, reduce wear, and ensure the sealing effect.

[0035] During installation: First, weld the gear column 1 and the turntable base plate 2 together at their welding positions. Then, embed the thrust washer 3 inside the stepped hole on the turntable base plate 2. Next, install the retaining ring 6 on the outer side of the bottom of the gear column 1. Then, install the whole into the intersecting body 4, so that the thrust washer 3 cooperates with the top of the intersecting body 4, and the retaining ring 6 cooperates with the inner side of the bottom of the intersecting body, thus completing the up and down positioning of the assembly.

[0036] During the working process, the gear column 1 will rotate inside the intersecting body. And after working for a certain period of time, lubricating oil will be injected into it through the oil cup 7 on the intersecting body 4, so as to reduce the friction between the gear column 1 and the intersecting body 4, ensure the smooth rotation of the gear column 1, and reduce the loss between the assembled parts.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gear column turntable fixing device, comprising: Gear column (1) and intersecting body (4), the gear column (1) is rotatably arranged on the intersecting body (4), and is characterized in that it further comprises: Turntable bottom plate (2), fixed to the gear column (1); Thrust washer (3), arranged at the bottom of the turntable bottom plate (2) and abutted against the top of the intersecting body (4) for rotational sealing between the turntable bottom plate (2) and the intersecting body (4).

2. The fixing device for a gear column turntable according to claim 1, characterized in that: A circular groove (5) is formed on the turntable bottom plate (2) and is in interference fit with the thrust washer (3).

3. A gear column turntable fixing device according to claim 1, characterized in that: The gear column (1) is provided with a flange (11), and the turntable bottom plate (2) is fixed to the flange (11); an inclined surface (12) is arranged on the outer side of the top of the flange (11), and the inclined surface (12) and the turntable bottom plate (2) form a clamping groove, and the inner side of the thrust washer (3) extends into the clamping groove.

4. A gear column turntable fixing device according to claim 2, characterized in that: The outer diameter of the circular groove (5) is equal to the outer diameter of the thrust washer (3).

5. A gear column turntable fixing device according to claim 1, characterized in that: The top and bottom of the intersecting body (4) are respectively circular ring structures, an annular groove is formed on the inner side of the circular ring structure at one end of the intersecting body (4) far from the turntable bottom plate (2), a retaining ring (6) is connected between the inner side of the circular ring structure at one end of the intersecting body (4) far from the turntable bottom plate (2) and the gear column (1), and the retaining ring (6) is located inside the annular groove.

6. A gear column turntable fixing device according to claim 5, characterized in that: A plurality of oil cups (7) are annularly arrayed on the side surface of the circular ring structure at one end of the intersecting body (4) close to the turntable bottom plate (2), and the plurality of oil cups (7) are used for regularly injecting lubricating oil into the intersecting body (4).

7. A gear column turntable fixing device according to claim 6, characterized in that: A plurality of first oil holes (8) are radially arranged in an annular array on the side surface of the circular ring structure at one end of the intersecting body (4) close to the turntable bottom plate (2), and a plurality of second oil holes (9) are axially arranged. The first oil holes (8) are connected to the oil cups (7), the first oil holes (8) and the second oil holes (9) communicate with each other, and the second oil holes (9) extend to the thrust washer (3).

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