A tower crane slewing bearing structure

Abstract

The utility model relates to the technical field of slewing bearing structure, and disclose a tower crane slewing bearing structure, including inner ring and outer ring, the first track is equipped in the inner ring outer wall, the second track is equipped in the outer ring inner wall, and the ball and the spacer block are equipped between two tracks to realize relative slewing and reduce abrasion. Multiple oil storage tanks are set up in the outer circle, are communicated through the connecting pipe, the reinforcing rod is equipped in the oil storage tank and makes up the strength loss, and the oil inlet pipe and dustproof screw cap of one-way valve are connected to the outside. The oil storage tank inside inserts and connects the oil guide cotton and slowly conducts lubricating oil to the inner ring and the outer ring gap, and the ball is continuously and evenly lubricated. The structure is designed through the oil storage tank and the oil guide cotton, solves the problem of insufficient lubrication and uneven transmission of the prior art, effectively reduces the abrasion between the ball and the track, improves the service life and the operation stability of the slewing bearing structure, reduces the energy consumption, and is suitable for the tower crane in the field such as building construction.

Description

Technical Field

[0001] This utility model relates to the field of slewing bearing structure technology, specifically a slewing bearing structure for a tower crane. Background Technology

[0002] Tower cranes are commonly used lifting equipment in construction. Their slewing bearing structure is one of the key components, undertaking the important function of the rotation of the upper structure of the crane relative to the lower structure. It has a crucial impact on the normal operation and performance of the crane.

[0003] In existing tower crane slewing bearing structures, while some structures can achieve relative rotational movement between the inner and outer rings, they lack an effective lubrication guarantee mechanism. Some rely solely on simple oiling methods, which are insufficient to store enough lubricating oil to provide long-term, stable lubrication for the balls, leading to accelerated wear between the balls and the track due to insufficient lubrication. Furthermore, some structures lack a reasonable lubrication conduction design, failing to continuously and evenly conduct lubricating oil to the contact points between the balls and the track, resulting in unsatisfactory lubrication and consequently affecting the service life and operational stability of the slewing bearing structure. Therefore, those skilled in the art provide a tower crane slewing bearing structure to solve the problems mentioned in the background art. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a slewing bearing structure for a tower crane to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a slewing bearing structure for a tower crane, comprising an inner ring and an outer ring, wherein the outer ring is disposed around the periphery of the inner ring, a first track is formed on the outer wall of the inner ring, and a second track is formed on the inner wall of the outer ring, wherein ball bearings are disposed between the first track and the second track, and an isolation block is provided on one side of the ball bearings to prevent the ball bearings from colliding and wearing each other, wherein an oil storage groove is formed inside the outer ring, and a connecting pipe is connected to the outer wall of the outer ring, wherein an oil-guiding cotton strip is inserted into the side of the oil storage groove facing the inner ring, one end of the oil-guiding cotton strip is inserted into the oil storage groove, and the other end of the oil-guiding cotton strip passes through the outer ring and protrudes to the inner side of the outer ring, wherein the oil-guiding cotton strip can slowly absorb the lubricating oil in the oil storage groove and conduct it to the gap between the inner ring and the outer ring, thereby achieving continuous and uniform lubrication of the ball bearings and reducing wear between the ball bearings and the track.

[0006] Preferably, the gap formed between the inner and outer rings due to the arrangement of the balls can reduce frictional resistance and lower energy consumption.

[0007] Preferably, an oil inlet pipe is connected to the outer side of the inner ring of the oil storage tank. A one-way valve is installed on the oil inlet pipe to prevent backflow of lubricating oil and ensure that the lubricating oil enters the oil storage tank smoothly. A threaded cap is threaded at the end of the oil inlet pipe to provide good dust protection for the oil inlet end, preventing dust and other impurities from entering the oil storage tank and contaminating the lubricating oil, thus extending the service life of the lubricating oil and ensuring the lubrication effect.

[0008] Preferably, a reinforcing rod is vertically installed inside the oil storage tank, which effectively compensates for the impact of opening the oil storage tank on the strength of the outer ring and ensures that the overall strength of the slewing bearing structure is not greatly weakened.

[0009] Preferably, the oil storage tanks are connected by connecting pipes, which can store a large amount of lubricating oil and ensure long-term lubrication of the balls.

[0010] Compared with the prior art, this utility model provides a slewing bearing structure for a tower crane, which has the following beneficial effects:

[0011] Through design, a first track and a second track are respectively set on the contact side of the inner and outer rings, and ball bearings are used to achieve relative rotational motion between the inner and outer rings. Multiple oil reservoirs connected by connecting pipes are opened inside the outer ring, which can store a large amount of lubricating oil to ensure long-term lubrication of the ball bearings. The oil guide strips set inside the oil reservoirs can slowly absorb the lubricating oil in the oil reservoirs and conduct it to the gap between the inner and outer rings, so as to achieve continuous and uniform lubrication of the ball bearings, reduce wear between the ball bearings and the track, and further improve the service life and operational stability of the slewing bearing structure. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a tower crane slewing bearing structure provided in an embodiment of this application.

[0013] Figure 2 This is an exploded view of the slewing bearing structure of a tower crane provided in an embodiment of this application.

[0014] Figure 3 This is a structural cross-sectional view of the outer ring of a tower crane slewing bearing structure provided in an embodiment of this application.

[0015] Figure 4 This application provides an embodiment of a tower crane slewing bearing structure. Figure 3 Enlarged view of the structure at point A.

[0016] In the diagram: 1. Inner ring; 101. First track; 2. Outer ring; 201. Second track; 3. Ball bearing; 4. Spacer block; 5. Oil reservoir; 6. Connecting pipe; 7. Reinforcing rod; 8. Oil inlet pipe; 801. Threaded cap; 9. Oil guide strip. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides a technical solution: a slewing bearing structure for a tower crane. Please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 4 The system includes an inner ring 1 and an outer ring 2. The outer ring 2 is located around the inner ring 1. A first track 101 is provided on the outer wall of the inner ring 1, and a second track 201 is provided on the inner wall of the outer ring 2. A ball bearing 3 is provided between the first track 101 and the second track 201. An isolation block 4 is provided on one side of the ball bearing 3. The isolation block 4 can prevent the balls bearing from colliding and wearing each other. An oil storage groove 5 is provided inside the outer ring 2. A connecting pipe 6 is connected to the outer wall of the outer ring 2. An oil guide cotton strip 9 is inserted into the side of the oil storage groove 5 facing the inner ring 1. One end of the oil guide cotton strip 9 is inserted into the oil storage groove 5, and the other end of the oil guide cotton strip 9 passes through the outer ring 2 and protrudes to the inner side of the outer ring 2. The oil guide cotton strip 9 can slowly absorb the lubricating oil in the oil storage groove and conduct it to the gap between the inner ring 1 and the outer ring 2, so as to achieve continuous and uniform lubrication of the ball bearing 3 and reduce the wear between the ball bearing 3 and the track.

[0019] The gap formed between the inner ring 1 and the outer ring 2 due to the arrangement of the balls 3 reduces frictional resistance and energy consumption. The principle of the oil reservoir 8 is that the outer side of the inner ring 1 is connected to the oil inlet pipe 8, and the oil inlet pipe 8 is equipped with a one-way valve to prevent the lubricating oil from flowing back and to ensure that the lubricating oil enters the oil reservoir smoothly. The end of the oil inlet pipe 8 is threadedly connected with a threaded cap 801, which can play a good dustproof protection role for the oil inlet end, preventing dust and other impurities from entering the oil reservoir and contaminating the lubricating oil, extending the service life of the lubricating oil and ensuring the lubrication effect. A reinforcing rod 7 is vertically installed in the oil reservoir 5, which effectively compensates for the impact of opening the oil reservoir on the strength of the outer ring, and ensures that the overall strength of the slewing bearing structure is not greatly weakened. The oil reservoirs 5 are connected by a connecting pipe 6, which can store a large amount of lubricating oil and provide a guarantee for the long-term lubrication of the balls 3.

[0020] The working principle of this device is as follows: The slewing bearing structure consists of an inner ring 1 and an outer ring 2. A first track 101 and a second track 201 are respectively provided on the side where the inner ring 1 and the outer ring 2 are in contact. A ball bearing 3 and an isolation block 4 are provided between the first track 101 and the second track 201. With the ball bearing 3 in place, there is a certain gap between the inner ring 1 and the outer ring 2.

[0021] Furthermore, multiple oil storage tanks 5 are provided inside the outer ring 2, and the multiple oil storage tanks 5 are connected to each other through the outer connecting pipe 6. A reinforcing rod 7 is vertically installed inside the oil storage tank 5 to reduce the strength loss caused by the oil storage tank 5. An oil inlet pipe 8 is connected to the outside of the oil storage tank 5. A one-way valve is installed on the oil inlet pipe 8, and a threaded cap 801 is installed at the end of the oil inlet pipe 8 to protect the oil inlet end of the oil inlet pipe 8 from dust.

[0022] An oil-guiding cotton strip 9 is provided inside the oil reservoir 5. One end of the oil-guiding cotton strip 9 is inserted into the oil reservoir 5, and the other end passes through the outer ring 2 and protrudes to the inside of the outer ring 2. The oil-guiding cotton strip 9 can slowly absorb the lubricating oil in the oil reservoir 5 and transmit it to the gap between the inner ring 1 and the outer ring 2, thereby lubricating the ball 3.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] In this document, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A slewing bearing structure for a tower crane, comprising an inner ring (1) and an outer ring (2), wherein the outer ring (2) is disposed around the inner ring (1), characterized in that: The outer wall of the inner ring (1) is provided with a first track (101), and the inner wall of the outer ring (2) is provided with a second track (201). A ball bearing (3) is provided between the first track (101) and the second track (201). An isolation block (4) is provided on one side of the ball bearing (3). An oil storage tank (5) is provided inside the outer ring (2). A connecting pipe (6) is connected to the outer wall of the outer ring (2). An oil-guiding cotton strip (9) is inserted into the side of the oil storage tank (5) facing the inner ring (1). One end of the oil-guiding cotton strip (9) is inserted into the oil storage tank (5), and the other end of the oil-guiding cotton strip (9) passes through the outer ring (2) and protrudes to the inner side of the outer ring (2).

2. The slewing bearing structure for a tower crane according to claim 1, characterized in that: An oil inlet pipe (8) is connected to the outer side of the inner ring (1) of the oil storage tank (5), and a one-way valve is installed on the oil inlet pipe (8).

3. The slewing bearing structure for a tower crane according to claim 2, characterized in that: The inlet pipe (8) is threaded with a threaded cap (801) at its port.

4. The slewing bearing structure for a tower crane according to claim 1, characterized in that: A reinforcing rod (7) is vertically installed inside the oil storage tank (5).

5. A slewing bearing structure for a tower crane according to claim 1, characterized in that: The oil storage tanks (5) are connected by connecting pipes (6).

6. A slewing bearing structure for a tower crane according to claim 1, characterized in that: A gap is provided between the inner ring (1) and the outer ring (2).

Images