Inter-tile guide key of double-layer tile thrust bearing and double-layer tile thrust bearing

Abstract

The utility model discloses a double-layer tile thrust bearing inter-tile guide key and a double-layer tile thrust bearing, the double-layer tile thrust bearing inter-tile guide key comprises a guide key body, the guide key body is provided with only one downward mounting counter bore, and the bottom of the guide key body is provided with an oil passing groove. The structure of the guide key is simplified, the guide key is convenient to manufacture and install, and the adaptability to different supporting tiles is better.

Description

Technical Field

[0001] The utility model relates to the technical field of thrust bearings, in particular to a double-layer bushing thrust bearing inter-wall guide key and a double-layer bushing thrust bearing. Background Art

[0002] For a double-layer thrust bearing, there are two parts: a top thrust pad and a bottom support pad. Typically, the thrust pad and the support pad need to be relatively fixed, and the oil groove at the bottom of the thrust pad must not be blocked. A guide key is used to fix them in the circumferential direction. Its function is to keep the circumferential movement of the thrust pad and the support pad consistent. In existing technical solutions, the guide key is a long strip and is installed on the support pad with two screws. However, this guide key has the following inconveniences:

[0003] 1. The original guide key is long and is usually fixed to the support plate with two or more screws. For different support plates, the position and distance of the two screw holes are usually different, resulting in poor interchangeability during the test;

[0004] 2. The two ends of the original guide key are semicircular, and the manufacturing process is relatively complicated. Utility Model Content

[0005] The purpose of the invention of the utility model is to provide a double-layer thrust bearing inter-pad guide key and a double-layer thrust bearing in response to the above-mentioned problems, which simplifies the structure of the guide key, facilitates manufacturing and installation, and has better adaptability to different support pads.

[0006] The technical solutions adopted in this utility model are as follows:

[0007] A guide key between double-layer thrust bearing pads comprises a guide key body. The guide key body has only one downward mounting countersunk hole, and the bottom of the guide key body is provided with an oil groove.

[0008] Optionally, the oil groove is circumferentially continuous.

[0009] Optionally, there are two oil grooves.

[0010] Optionally, the guide key body is symmetrical about the axis center of the mounting countersunk hole.

[0011] Optionally, a support pad is provided below the guide key body, the upper surface of the support pad is a mounting plane, and the lower surface of the guide key body is completely in contact with the mounting plane.

[0012] Optionally, the left and right side surfaces of the guide key body have chamfers.

[0013] Optionally, the opposite side surfaces of the guide key body are parallel.

[0014] A double-layer thrust bearing includes multiple support pads arranged along the circumferential direction, each of the support pads is equipped with a thrust pad, and multiple thrust bearing double-layer pad guide keys as shown above are arranged between the support pads and the thrust pads. The multiple thrust bearing double-layer pad guide keys are arranged along the radial direction.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] The utility model provides a double-wall thrust bearing inter-pad guide key and double-wall thrust bearing. The long guide key is replaced with a short guide key, and the original fixing method using two or more screws is replaced with a single screw. The four edges of the guide key are chamfered. The bottom of the guide key has two oil-flow grooves, and the contact surface between the bottom and the mounting surface is divided into three sections. This improves the interchangeability of the guide keys, simplifies the manufacturing process, facilitates installation and maintenance, optimizes the oil circuit design, enhances structural stability, and reduces costs. This improves the overall performance and cost-effectiveness of the thrust bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the guide key between the double-layer thrust bearing pads.

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the guide key between the double-layer thrust bearing pads Figure 2 .

[0020] Figure 3 It is a schematic diagram of a radial single-side cross-section of a double-layer thrust bearing.

[0021] Markings in the figure: 1-guide key body, 2-mounting countersunk hole, 3-oil groove, 4-supporting pad, 5-thrust pad. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings.

[0023] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0024] Any feature disclosed in this specification, unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0025] A double-layer thrust bearing bushing guide key, such as Figure 1-3As shown, it includes a guide key body 1, on which there is one and only one downward mounting countersunk hole 2, and an oil groove 3 is provided at the bottom of the guide key body 1.

[0026] Specifically, the improved guide key is secured with a single screw. For support bearings 4 of varying configurations, there's no need to consider the spacing between threaded holes and the guide key spacing. This simplifies the process of adapting different support bearings 4 and improves component versatility and interchangeability. The oil groove 3 helps ensure smooth lubrication and prevents oil groove clogging, thereby improving the thrust bearing's lubrication and heat dissipation performance, extending the bearing's service life.

[0027] As another specific embodiment, the oil groove 3 is circumferentially continuous. This circumferential continuity ensures that lubricating oil can flow smoothly through the bottom of the guide key, providing continuous and uniform lubrication to the thrust pad 5 and support pad 4, thereby reducing friction and wear and improving the operating efficiency and life of the bearing. Furthermore, the lubricating oil can flow over a wider area, removing more heat and lowering the operating temperature of the bearing.

[0028] As another specific embodiment, the oil grooves 3 include two. The bottom portion, where the oil grooves contact the mounting surface, is divided into three sections. This helps ensure smooth lubrication and prevents blockage in the oil grooves. It also helps disperse pressure, improves contact stability between the guide key and the support pad 4, and reduces wear caused by excessive local pressure.

[0029] As another specific embodiment, the guide key body 1 is symmetrical about the axis of the mounting countersunk hole 2. This symmetrical design ensures accurate positioning of the guide key body 1 within the mounting countersunk hole 2, thereby reducing assembly errors and improving component precision. This simplifies the installation process because there is no need to specifically align the guide key position; it only needs to be symmetrical about the axis.

[0030] As another specific embodiment, a support pad 4 is provided below the guide key body 1. The upper surface of the support pad 4 serves as a mounting surface, and the lower surface of the guide key body 1 is completely aligned with the mounting surface. The complete fit between the guide key body 1 and the support pad 4 ensures the guide key's securement on the support pad 4, preventing it from shifting due to vibration or other external forces during operation. When the guide key is subjected to pressure from other components, the mounting surface of the support pad 4 can evenly distribute this pressure over a larger contact area, reducing local stress concentration and thereby improving the stability of the entire structure.

[0031] As another specific embodiment, the left and right side surfaces of the guide key body 1 are chamfered. The original guide key had semicircular ends, requiring complex manufacturing processes. The improved short guide key design simplifies the shape and features chamfered edges on all four sides, making it easier to manufacture and reducing production costs.

[0032] In another specific embodiment, the opposing side surfaces of the guide key body 1 are parallel. This parallelism improves interchangeability and ensures proper alignment of the guide key during installation and use, providing stable guidance. Furthermore, both circumferential sides of the guide key withstand positive pressure from the keyway. In this embodiment, the circumferential direction refers to the circumferential direction of the guide key body 1 relative to the thrust bearing after installation.

[0033] A double-layer thrust bearing comprises multiple support pads 4 arranged circumferentially. Each support pad 4 is fitted with a thrust pad 5. Multiple thrust bearing double-layer pad guide keys, as shown above, are positioned between the support pads 4 and the thrust pads 5. These guide keys are arranged radially. These guide keys maintain the relative position of the thrust pads 5 and support pads 4, preventing unwanted circumferential movement under axial load. This improves the stability between the thrust pads 5 and support pads 4, enhancing the overall performance of the bearing.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The present invention extends to any new features or any new combinations disclosed in this specification, and any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that detailed technical features not disclosed in this embodiment, such as specific structures and connection methods, can be obtained by those skilled in the art from the prior art, and the present disclosed embodiment does not specifically limit them.

[0035] The present invention is not limited to the aforementioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A guide key between pads of a double-layer thrust bearing, characterized by: A guide key body (1) is provided with one and only one downward mounting countersunk hole (2) on the guide key body (1), and an oil groove (3) is provided at the bottom of the guide key body (1).

2. The guide key between pads of a double-pad thrust bearing according to claim 1, characterized in that: The oil groove (3) is circumferentially continuous.

3. The guide key between pads of a double-pad thrust bearing according to claim 1, characterized in that: The oil passage grooves (3) include two.

4. The guide key between pads of a double-pad thrust bearing according to claim 1, characterized in that: The guide key body (1) is symmetrical about the axis center of the mounting countersunk hole (2).

5. The guide key between pads of a double-pad thrust bearing according to claim 1, characterized in that: A support pad (4) is provided below the guide key body (1), the upper surface of the support pad (4) is a mounting plane, and the lower surface of the guide key body (1) is completely in contact with the mounting plane.

6. The guide key between pads of a double-pad thrust bearing according to claim 1, characterized in that: The left and right side surfaces of the guide key body (1) are chamfered.

7. The guide key between pads of a double-pad thrust bearing according to claim 1, characterized in that: The opposite side surfaces of the guide key body (1) are parallel.

8. A double-layer pad thrust bearing, characterized by: It comprises a plurality of support pads (4) arranged along the circumferential direction, a thrust pad (5) being mounted above each of the support pads (4), a plurality of guide keys between double-layer thrust bearing pads as described in any one of claims 1 to 7 being arranged between the support pads (4) and the thrust pads (5), and the plurality of guide keys between double-layer thrust bearing pads being arranged along the radial direction.

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