I-shaped thrust cylindrical roller bearing isolation block

Abstract

The utility model provides an I-shaped thrust cylindrical roller bearing isolation block. The I-shaped thrust cylindrical roller bearing isolation block comprises a support column, a first cross beam and a second cross beam, arc-shaped grooves matched with the cylindrical rollers are formed in the large side faces of the supporting columns; one end of the strut is vertically connected with the first cross beam, two ends of the first cross beam protrude out of the strut and are planes, and the surface, connected with the strut, of the first cross beam is a plane; the other end of the strut is vertically connected with a second cross beam, two ends of the second cross beam protrude out of the strut and are planes, and the surface, connected with the strut, of the second cross beam is a plane; the supporting columns, the first cross beam and the second cross beam form an I-shaped structure; the material utilization rate can be improved, the machining difficulty is reduced, the machining efficiency is improved, the batch production cost is reduced, rolling body abrasion can be reduced, the bearing failure risk is reduced, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, in particular to an I-type thrust cylindrical roller bearing isolation block. Background Art

[0002] Pitch bearings are a key component of the pitch control system, assisting in the pitch control function of wind turbines during operation. They primarily bear the loads of the turbine blades, hub, and wind, and are essential components for driving the blades. Traditional designs utilize a single-piece circular ring as the retainer, which is difficult to manufacture and results in low material utilization. Utility Model Content

[0003] In view of the above problems, the purpose of this application is to provide a type of thrust cylindrical roller bearing isolation block that can improve material utilization, reduce processing difficulty, improve processing efficiency, and reduce mass production costs. At the same time, it can also reduce rolling element wear, reduce the risk of bearing failure, and increase bearing service life. It is mainly used in three-row columnar variable pitch bearings of large-megawatt wind turbines, and can also be extended to other cylindrical thrust roller bearings.

[0004] In order to achieve some or all of the above-mentioned purposes or other purposes, the present application provides the following technical solutions: an I-type thrust cylindrical roller bearing isolation block, comprising a pillar, a first beam and a second beam; the pillar is a rectangular parallelepiped, comprising a group of opposite end faces, a group of opposite large side faces and a group of opposite small side faces; the group of opposite large side faces is provided with an arc-shaped groove matching the cylindrical roller; one end of the pillar is vertically connected to the first beam, both ends of the first beam protrude from the pillar, both ends of the first beam are planes, the surface where the first beam is connected to the pillar is plane, and the side face of the first beam is plane with the small side face of the pillar; the other end of the pillar is vertically connected to the second beam, both ends of the second beam protrude from the pillar, both ends of the second beam are planes, the surface where the second beam is connected to the pillar is plane, and the side face of the second beam is plane with the small side face of the pillar; the pillar, the first beam and the second beam constitute an I-type structure.

[0005] Furthermore, the arc-shaped groove between two adjacent first-type thrust cylindrical roller bearing isolation blocks forms a pocket for accommodating the cylindrical roller, the diameter of the arc-shaped groove at the contact point with the circumferential surface of the cylindrical roller is larger than the diameter of the cylindrical roller, and the first-type thrust cylindrical roller bearing isolation block is in line contact with the cylindrical roller.

[0006] Furthermore, there are several I-type thrust cylindrical roller bearing isolation blocks, and the several I-type thrust cylindrical roller bearing isolation blocks form a complete retaining frame, several first beams form a complete outer beam, there is a gap between two adjacent first beams, and the total value of all gaps is less than the diameter of a cylindrical roller; several second beams form a complete inner beam, there is a gap between two adjacent second beams, and the total value of all gaps is less than the diameter of a cylindrical roller.

[0007] Furthermore, the first crossbeam is provided with a chamfer, and the second crossbeam is provided with a chamfer.

[0008] Furthermore, the material of the I-type thrust cylindrical roller bearing isolation block is polyoxymethylene resin.

[0009] Furthermore, the number of the cylindrical rollers is the same as the number of the isolation blocks of a type I thrust cylindrical roller bearing, and the cylindrical rollers and the isolation blocks of a type I thrust cylindrical roller bearing are arranged at intervals.

[0010] Furthermore, an assembly method of an I-type thrust cylindrical roller bearing isolation block is as follows:

[0011] Step 1: Place the inner ring flat on the ground with the end face of the inner ring touching the ground;

[0012] Step 2: Place the cylindrical roller and a type of thrust cylindrical roller bearing isolation block on the inner ring raceway one by one;

[0013] Step 3: Install the last two cylindrical rollers and a type of thrust cylindrical roller bearing isolation block on the inner ring raceway at the same time;

[0014] Step 4: Put the outer ring on the outside of the cylindrical roller and a type of thrust cylindrical roller bearing isolation block.

[0015] Compared with existing technologies, the present invention offers the following advantages: 1. An I-shaped spacer is installed between each pair of rolling elements, rather than an integral cage, preventing excessive cage deformation and breakage when the bearing is overloaded. 2. The individual I-shaped spacers are relatively small, reducing both the manufacturing difficulty and the equipment requirements. 3. The I-shaped spacers also guide and secure the rollers. 4. Compared to traditional pocket-type cages, the gap between adjacent I-shaped spacers can accommodate more grease. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 A schematic diagram of the present invention in combination with a cylindrical roller;

[0018] Figure 3It is a cross-sectional view of the contact point between the pillar and the cylindrical roller;

[0019] Figure 4 A schematic diagram of the present utility model;

[0020] Figure 5 for Figure 4 Middle AA schematic diagram;

[0021] Figure 6 for Figure 4 Schematic diagram of the middle BB;

[0022] In the figure: 1. Pillar; 2. Large side; 3. Small side; 4. First crossbeam; 5. Second crossbeam; 6. Cylindrical roller; 7. Contact point. DETAILED DESCRIPTION

[0023] In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0024] See attached Figure 1-6 , an I-type thrust cylindrical roller 6 bearing isolation block, comprising a pillar 1, a first crossbeam 4 and a second crossbeam 5; the pillar 1 is a rectangular parallelepiped, comprising a set of opposite end faces, a set of opposite large side faces 2 and a set of opposite small side faces 3; the set of opposite large side faces 2 is provided with an arc-shaped groove matching the cylindrical roller 6; one end of the pillar 1 is vertically connected to the first crossbeam 4, both ends of the first crossbeam 4 protrude from the pillar 1, the two ends of the first crossbeam 4 are flat, the surface connecting the first crossbeam 4 and the pillar 1 is flat, and the side of the first crossbeam 4 is flat to the pillar 1 The small side surface 3 of the pillar 1 is flat; the other end of the pillar 1 is vertically connected to the second crossbeam 5, both ends of the second crossbeam 5 protrude from the pillar 1, both ends of the second crossbeam 5 are flat, the surface where the second crossbeam 5 is connected to the pillar 1 is flat, and the side surface of the second crossbeam 5 is flat with the small side surface 3 of the pillar 1; the pillar 1, the first crossbeam 4 and the second crossbeam 5 constitute an I-shaped structure; the I-shaped isolation block has a smooth surface, no burrs, uniform color, no pores inside, and no looseness; the external dimensions of a single I-shaped isolation block are small, which reduces the processing difficulty and processing equipment requirements.

[0025] The arc-shaped groove between two adjacent isolation blocks forms a pocket for accommodating the cylindrical roller 6. The diameter of the contact point between the arc-shaped groove and the circumferential surface of the cylindrical roller 6 is larger than the diameter of the cylindrical roller 6. The I-type thrust cylindrical roller 6 bearing isolation block is in line contact with the cylindrical roller 6; the two adjacent isolation blocks are combined into a pocket, and the cylindrical roller 6 moves up and down in the pocket, and during the movement, it makes two line contacts with the pillar 1, with the contact point 7; the I-type isolation block plays the role of guiding and fixing the roller movement; the gap between two adjacent I-type isolation blocks can also accommodate more grease.

[0026] There are several I-shaped thrust cylindrical roller 6 bearing isolation blocks, and the several I-shaped thrust cylindrical roller 6 bearing isolation blocks form a complete retaining frame. Several first beams 4 form a complete outer beam, and there is a gap between two adjacent first beams 4. The total value of all gaps is less than the diameter of a cylindrical roller 6; several second beams 5 form a complete inner beam, and there is a gap between two adjacent second beams 5. The total value of all gaps is less than the diameter of a cylindrical roller 6; the maximum value of the total gap of the isolation block is less than the diameter of a single cylindrical roller 6 to prevent the roller from falling out; an I-shaped isolation block is installed between every two rolling bodies, rather than an integral retaining frame, to avoid excessive deformation of the retaining frame and cause breakage when the bearing load is too large.

[0027] The first crossbeam 4 is provided with a chamfer, and the second crossbeam 5 is provided with a chamfer; the chamfers help to improve the efficiency of grease entering the cage and more fully lubricate the rollers.

[0028] The material of the I-type thrust cylindrical roller 6 bearing isolation block is polyoxymethylene resin; it has a long service life and is fatigue-resistant.

[0029] The number of the cylindrical rollers 6 is the same as the number of the isolation blocks, and the cylindrical rollers 6 and the isolation blocks are arranged at intervals.

[0030] The assembly method of the I-type thrust cylindrical roller bearing isolation block is as follows:

[0031] Step 1: Place the inner ring flat on the ground with the end face of the inner ring touching the ground;

[0032] Step 2: Place the cylindrical roller 6 and the I-type thrust cylindrical roller 6 bearing isolation blocks one by one on the inner ring raceway;

[0033] Step 3: The last two cylindrical rollers 6 and the I-type thrust cylindrical roller 6 bearing isolation block are installed on the inner ring raceway at the same time;

[0034] Step 4: Put the outer ring on the outside of the cylindrical roller 6 and the I-type thrust cylindrical roller 6 bearing isolation block.

[0035] The basic dimensions of the spacer block are determined based on the roller diameter, length, and other dimensions, as well as the thrust raceway dimensions of the three-row cylindrical roller bearing. The thickness of the spacer block's working area is determined by determining the spacing between the large and small ends of the rolling elements in a uniformly distributed state, based on the location and number of the bearing's rolling elements.

[0036] When it is necessary to assemble a cylindrical roller with a diameter of 55mm and a length of 55mm, the diameter of the isolation block's support at the contact point with the cylindrical roller is 55.4mm, the width of the large side of the support is 40mm (error 0.15mm), and the support height is 56.66mm; the length of the first beam is 64.0964mm, and the total gap value between several first beams is less than 55mm; the length of the second beam is 60.9299mm, and the total gap value between several second beams is less than 55mm.

[0037] This application can improve material utilization, reduce processing difficulty, improve processing efficiency, and reduce batch production costs. At the same time, it can reduce rolling element wear, reduce the risk of bearing failure, and increase bearing service life.

[0038] The above disclosure is only a preferred embodiment of the present application, and certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An I-type thrust cylindrical roller bearing isolation block, characterized by: It includes a pillar, a first crossbeam and a second crossbeam; the pillar is a rectangular parallelepiped, including a group of opposite end faces, a group of opposite large side faces and a group of opposite small side faces; the group of opposite large side faces is provided with an arc-shaped groove matching the cylindrical roller; one end of the pillar is vertically connected to the first crossbeam, both ends of the first crossbeam protrude from the pillar, both ends of the first crossbeam are planes, the surface where the first crossbeam is connected to the pillar is plane, and the side face of the first crossbeam is plane with the small side face of the pillar; the other end of the pillar is vertically connected to the second crossbeam, both ends of the second crossbeam protrude from the pillar, both ends of the second crossbeam are planes, the surface where the second crossbeam is connected to the pillar is plane, and the side face of the second crossbeam is plane with the small side face of the pillar; the pillar, the first crossbeam and the second crossbeam constitute an I-shaped structure.

2. The I-type thrust cylindrical roller bearing isolation block according to claim 1, characterized in that: The arc-shaped groove between two adjacent first-type thrust cylindrical roller bearing isolation blocks forms a pocket for accommodating the cylindrical roller. The diameter of the arc-shaped groove at the contact point with the circumferential surface of the cylindrical roller is larger than the diameter of the cylindrical roller. The first-type thrust cylindrical roller bearing isolation block is in line contact with the cylindrical roller.

3. The I-type thrust cylindrical roller bearing isolation block according to claim 1, characterized in that: There are several I-type thrust cylindrical roller bearing isolation blocks, and the several I-type thrust cylindrical roller bearing isolation blocks form a complete retaining frame. Several first beams form a complete outer beam, and there is a gap between two adjacent first beams. The total value of all gaps is less than the diameter of a cylindrical roller; several second beams form a complete inner beam, and there is a gap between two adjacent second beams. The total value of all gaps is less than the diameter of a cylindrical roller.

4. The I-type thrust cylindrical roller bearing isolation block according to claim 1, characterized in that: The first crossbeam is provided with a chamfer, and the second crossbeam is provided with a chamfer.

5. The I-type thrust cylindrical roller bearing isolation block according to claim 1, characterized in that: The material of the I-type thrust cylindrical roller bearing isolation block is polyoxymethylene resin.

6. An I-type thrust cylindrical roller bearing isolation block according to any one of claims 1 to 5, characterized in that: The number of the cylindrical rollers is the same as the number of the isolation blocks of a type I thrust cylindrical roller bearing, and the cylindrical rollers and the isolation blocks of the type I thrust cylindrical roller bearing are arranged at intervals.

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