A rotary support grease filling device for excavators

Abstract

The utility model discloses a kind of excavator slewing support butter filling device, the side of baffle is provided with tubular oil inlet, first cover plate is sealingly connected with oil inlet by first fastener, long slot-shaped oil outlet groove is provided on bottom plate, the bottom of oil outlet groove is provided with oil outlet, second cover plate is connected with the oil outlet by second fastener, second cover plate is sealingly connected with oil outlet groove, the utility model is provided with transparent first cover plate, the state and remaining amount of butter in slewing support part butter tray can be observed, timely butter in slewing support part inside is added or replaced, the device is also provided with long slot-shaped oil outlet groove, butter in butter tray can be quickly and cleanly discharged, the efficiency of butter replacement is improved, the device is also provided with multiple oil injection nozzle corresponding with ball groove, the efficiency of butter filling in ball groove is improved and more labor-saving.

Description

Technical Field

[0001] This utility model relates to the field of excavator technology, specifically to a grease filling device for excavator slewing bearings. Background Technology

[0002] An excavator, also known as a digging machine or a soil excavator, is an earthmoving machine that uses a bucket to dig materials above or below the machine's bearing surface and load them into transport vehicles or unload them into a stockpile.

[0003] When an excavator is operating, its slewing bearing needs to rotate frequently. Therefore, grease needs to be added to the grease tray and the ball joint grooves between the slewing gear and the slewing coupling for lubrication. The grease will be continuously consumed and gradually deteriorate. When replacing the grease in the grease tray, older excavators only had a small circular hole in the bottom plate of the slewing bearing for grease drainage, resulting in incomplete grease drainage and low efficiency. Secondly, there was generally only one grease filling port for the ball joint grooves between the slewing gear and the slewing coupling. When adding grease to the ball joint grooves, it was necessary to add a portion of grease, rotate the slewing platform, and then add more grease until the slewing platform completed one rotation to ensure sufficient grease filling. This method was inefficient and laborious. Furthermore, it was inconvenient to observe the grease status and remaining amount in the grease tray of the slewing bearing of older excavators; it usually required removing the cover plate on the grease filler port for inspection, which was also inconvenient. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the shortcomings of the prior art by providing a grease filling device for the slewing bearing of an excavator, thereby solving at least one of the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A grease filling device for excavator slewing bearing includes an annular support base, an annular gear ring support is bolted to the top of the support base, a slewing gear ring is fixedly connected to the gear ring support, and a slewing connecting seat is rotatably connected to the slewing gear ring via ball bearings. A base plate is provided in the middle of the gear ring support, a circular hole is provided in the middle of the base plate, and an annular baffle is provided at the edge of the hole. A tubular oil inlet is provided on the side of the baffle. A first cover plate is sealed to the oil inlet by a first fastener. An elongated oil outlet groove is provided on the base plate, and an oil outlet is provided at the bottom of the oil outlet groove. A second cover plate is connected to the oil outlet by a second fastener. The second cover plate is sealed to the oil outlet groove. A through oil inlet hole is provided on the side of the slewing connecting seat. The oil inlet hole cooperates with the ball bearing groove between the slewing gear ring and the slewing connecting seat. A first oil nozzle is sealed to the outer end of the oil inlet hole.

[0006] Furthermore, the side of the rotary connector is provided with several through oil injection holes, one of which is sealed to a first oil injection nozzle, and the other oil injection holes are sealed to pipe joints. The pipe joints are connected to oil supply pipes, and the oil supply pipes are sealed to a second oil injection nozzle. The first oil injection nozzle is located on one side of the first oil injection nozzle.

[0007] Furthermore, the oil pipeline is fixed to the outside of the rotary connector by a pipe clamp.

[0008] Furthermore, the oil pipeline is made of rigid material.

[0009] Furthermore, the oil outlet is elongated and its two ends extend to one side of the baffle and the other side of the rotary gear ring, respectively.

[0010] Furthermore, the first cover plate is made of a transparent material.

[0011] The beneficial effects of this utility model are: This invention features a long, grooved oil outlet that allows for quick and clean discharge of grease from the grease tray, improving grease replacement efficiency. The device also includes multiple grease nozzles corresponding to the ball bearing grooves, enhancing grease filling efficiency and reducing effort. Furthermore, a transparent first cover allows observation of the grease status and remaining amount in the grease tray of the slewing bearing, enabling timely addition or replacement of grease within the slewing bearing. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 , 2 This is a schematic diagram of the upper structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the lower structure of this utility model.

[0015] The attached diagram lists the components represented by each number as follows: Support base 1; Gear ring support 2; Rotary gear ring 3; Rotary connecting seat 4; Base plate 5; Baffle 6; Oil inlet 7; First cover plate 8; First fastener 9; Oil outlet groove 10; Oil outlet 11; Second cover plate 12; Second fastener 13; First oil inlet nozzle 14; Pipe joint 15; Oil supply pipe 16; Pipe clamp 17; Second oil inlet nozzle 18. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1: See Figures 1 to 3 This is a schematic diagram of the various structures of this utility model, including an annular support base 1. An annular geared ring support 2 is bolted to the top of the support base 1. A rotating geared ring 3 is fixedly connected to the geared ring support 2. The rotating geared ring 3 is rotatably connected to a rotating connecting seat 4 via ball bearings. A base plate 5 is provided in the middle of the geared ring support 2. A circular hole is provided in the middle of the base plate 5, and an annular baffle 6 is provided at the edge of the hole. The baffle 6, the base plate 5, and the rotating geared ring 3 form a grease tray for storing grease. A tubular grease inlet 7 is provided on the side of the baffle 6. The grease inlet 7 is sealed to a first cover plate 8 by a first fastener 9 for filling or observing grease. The base plate 5 is equipped with... The grease tray has a long, grooved grease outlet 10 and a grooved grease outlet 11. When the gear inside the grease tray rotates, it can squeeze the grease into the grease tray, improving the grease output efficiency. The bottom of the grease tray 10 has an grease outlet 11. The grease outlet 11 is connected to a second cover plate 12 by a second fastener 13. The second cover plate 12 is sealed to the grease tray 10. The grease that enters the grease tray flows out through the grease outlet 11. The side of the rotary connecting seat 4 has a through-hole for filling. The filling hole is engaged with the ball groove between the rotary gear ring 3 and the rotary connecting seat 4. The outer end of the filling hole is sealed to a first grease nozzle 14. Grease is injected into the grease tray through the first grease nozzle 14.

[0023] Specifically, the side of the rotary connecting seat 4 is provided with several through-holes for grease injection. One of the grease injection holes is sealed and connected to a first grease injection nozzle 14, and the other grease injection holes are sealed and connected to pipe joints 15. The pipe joints 15 are connected to oil supply pipes 16, and the oil supply pipes 16 are sealed and connected to second grease injection nozzles 18. The first grease injection nozzle 14 is located on one side of the first grease injection nozzle 14. Multiple grease injection guns can be used to inject grease at the same time. The number of first grease injection nozzles 14 and second grease injection nozzles 18 is 3 and they are evenly distributed around the circumference. The operator only needs to rotate the rotary platform by one-third to complete the grease injection in the ball groove, thus improving the grease injection efficiency.

[0024] Specifically, the oil pipeline 16 is fixed to the outside of the rotary connector 4 by the pipe clamp 17 to prevent the oil pipeline 16 from shifting.

[0025] Specifically, the oil pipeline 16 is made of rigid material, which provides better support.

[0026] Specifically, the oil outlet 11 is elongated and its two ends extend to one side of the baffle 6 and the other side of the rotary gear ring 3, respectively, to improve the efficiency of butter discharge.

[0027] Specifically, the first cover plate 8 is made of transparent material, allowing observation of the state of the butter in the butter tray without removing the cover plate.

[0028] The working principle of this utility model: The support base 1 of this device is connected to the excavator chassis, and the slewing connection base 4 is connected to the slewing platform to achieve support for the slewing platform. A drive gear is set in the grease tray and meshes with the slewing gear ring 3. When discharging grease, the second cover plate 12 is opened, and the operator drives the excavator to rotate the slewing platform. The gear inside the slewing gear ring 3 rotates, squeezing the grease into the oil outlet groove 10 and discharging it through the oil outlet 11. After the grease is discharged, the second cover plate 12 is fixed to the oil outlet groove 10 with the second fastener 13 to seal the oil outlet 11. At the same time, multiple grease guns are used to inject grease into the ball grooves in cooperation with the first grease nozzle 14 and the second grease nozzle 18. While injecting grease, the operator rotates the slewing platform, and the slewing gear ring 3 rotates relative to the slewing support base 1. The balls in the ball groove rotate evenly in the ball groove to complete the grease injection. The first grease nozzle 14 and the second grease nozzle 18 are self-closing grease injection nozzles.

[0029] By observing the state and remaining amount of butter in the butter tray through the transparent first cover plate 8, it can be determined whether to replace or add butter. When adding butter, the first cover plate 8 is removed and butter is added through a grease gun. After adding, the first cover plate 8 is fixed by the first fastener 9.

[0030] The above are merely optional embodiments of this utility model and are not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0031] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

Claims

1. A grease filling device for a slewing bearing of an excavator, comprising an annular support base (1), an annular gear ring support (2) connected to the upper part of the support base (1) by bolts, a slewing gear ring (3) fixedly connected to the gear ring support (2), a slewing connecting seat (4) rotatably connected to the slewing gear ring (3) by ball bearings, a base plate (5) provided in the middle of the gear ring support (2), a circular hole provided in the middle of the base plate (5) and an annular baffle (6) provided at the edge of the hole, characterized in that: The side of the baffle (6) is provided with a tubular oil inlet (7), and the oil inlet (7) is sealed to a first cover plate (8) by a first fastener (9). The bottom plate (5) is provided with a long groove-shaped oil outlet groove (10), and the bottom of the oil outlet groove (10) is provided with an oil outlet (11). The oil outlet (11) is connected to a second cover plate (12) by a second fastener (13). The second cover plate (12) is sealed to the oil outlet groove (10). The side of the rotary connecting seat (4) is provided with a through oil inlet hole. The oil inlet hole is engaged with the ball groove between the rotary gear ring (3) and the rotary connecting seat (4). The outer end of the oil inlet hole is sealed to a first oil inlet nozzle (14).

2. The grease filling device for an excavator slewing bearing according to claim 1, characterized in that: The side of the rotary connector (4) is provided with several through oil injection holes. One of the oil injection holes is sealed and connected to a first oil injection nozzle (14). The other oil injection holes are sealed and connected to a pipe joint (15). The pipe joint (15) is connected to an oil supply pipe (16). The oil supply pipe (16) is sealed and connected to a second oil injection nozzle (18). The first oil injection nozzle (14) is located on one side of the first oil injection nozzle (14).

3. The grease filling device for an excavator slewing bearing according to claim 2, characterized in that: The oil pipeline (16) is fixed to the outside of the rotary connector (4) by a pipe clamp (17).

4. The grease filling device for an excavator slewing bearing according to claim 3, characterized in that: The oil pipeline (16) is made of rigid material.

5. The grease filling device for an excavator slewing bearing according to claim 1, characterized in that: The oil outlet (11) is long and narrow, and both ends of the oil outlet (11) extend to one side of the baffle (6) and one side of the rotary gear ring (3), respectively.

6. The grease filling device for an excavator slewing bearing according to claim 1, characterized in that: The first cover plate (8) is made of transparent material.

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