阅读说明：本技术 一种角接触球轴承组推力间隙测量和调整装置 (Thrust clearance measuring and adjusting device for angular contact ball bearing set ) 是由 廖晨曦 朱如义 路璐 刘亚平 董结青 袁罡 于 2020-06-01 设计创作，主要内容包括：本发明公开了一种角接触球轴承组推力间隙测量和调整装置,属于轴承测量技术领域。本发明包括由内到外依次设置的内圈和外圈,外圈套设在内圈外周,其中内圈包括空心圆柱,空心圆柱轴向的上下两端分别设置有内圈压板和内圈底座,内圈压板和内圈底座之间通过内连接柱相连,且内圈压板顶部还设置有百分表；外圈包括上下平行设置的外圈压环和外圈底座,外圈压环和外圈底座之间通过外连接柱相连,外圈底座的外侧边缘位置环绕周向设置有支撑凸台,且支撑凸台朝向远离外圈压环的方向延伸。本发明的目的在于克服现有的角接触球轴承装配时推力间隙测量和调整过程复杂费力或测量不够精准的不足,加快了测量和调整的速度,提高了测量结果的准确性。(The invention discloses a thrust clearance measuring and adjusting device for an angular contact ball bearing set, and belongs to the technical field of bearing measurement. The inner ring pressing plate and the inner ring base are connected through an inner connecting column, and a dial indicator is further arranged at the top of the inner ring pressing plate; the outer ring comprises an outer ring pressing ring and an outer ring base which are arranged in parallel from top to bottom, the outer ring pressing ring and the outer ring base are connected through an outer connecting column, a supporting boss is arranged at the outer edge position of the outer ring base in a surrounding mode along the circumferential direction, and the supporting boss extends towards the direction far away from the outer ring pressing ring. The invention aims to overcome the defects that the thrust clearance measurement and adjustment process is complex and laborious or the measurement is not accurate enough when the existing angular contact ball bearing is assembled, accelerate the measurement and adjustment speed and improve the accuracy of the measurement result.)

1. The utility model provides an angular contact ball bearing group thrust clearance is measured and adjusting device which characterized in that: the inner ring pressing plate comprises an inner ring (200) and an outer ring (100) which are sequentially arranged from inside to outside, wherein the outer ring (100) is sleeved on the periphery of the inner ring (200), the inner ring (200) comprises a hollow cylinder (220), the upper end and the lower end of the hollow cylinder (220) in the axial direction are respectively provided with an inner ring pressing plate (210) and an inner ring base (230), the outer edge positions of the inner ring pressing plate (210) and the inner ring base (230) both extend beyond the periphery of the hollow cylinder (220), the inner ring pressing plate (210) and the inner ring base (230) are connected through an inner connecting column (212), and the top of the inner ring pressing plate (210) is also provided; outer lane (100) are annular structure including upper and lower parallel arrangement's outer lane clamping ring (110) and outer lane base (120), the installation cavity that is used for installing inner circle (200) is all offered at the center of outer lane clamping ring (110) and outer lane base (120), and link to each other through outer joint post (112) between outer lane clamping ring (110) and outer lane base (120), the outside edge position of outer lane base (120) encircles circumference and is provided with support boss (130), and support boss (130) and extend towards the direction of keeping away from outer lane clamping ring (110).

2. The angular contact ball bearing pack thrust clearance measurement and adjustment device of claim 1, wherein: the bottom of the outer connecting column (112) is fixed on the outer ring base (120), the top of the outer connecting column (112) is provided with a threaded section, a through hole matched with the outer connecting column (112) is formed in the position, corresponding to the outer connecting column (112), of the outer ring pressing ring (110), and the threaded section penetrates through the through hole in the outer ring pressing ring (110) and connects the outer ring pressing ring (110) with the outer ring base (120) through the outer ring locking nut (111).

3. The angular contact ball bearing pack thrust gap measuring and adjusting apparatus of claim 2, wherein: a plurality of outer connecting columns (112) are uniformly arranged on the outer ring base (120) at intervals around the circumferential direction.

4. The angular contact ball bearing pack thrust clearance measurement and adjustment device of claim 1, wherein: the bottom of the inner connecting column (212) is fixed on the inner ring base (230), the top of the inner connecting column (212) is provided with a threaded section, a through hole matched with the inner connecting column (212) is formed in the position, corresponding to the inner connecting column (212), of the inner ring pressing plate (210), and the threaded section penetrates through the through hole in the inner ring pressing plate (210) and connects the inner ring pressing plate (210) and the inner ring base (230) together through the inner ring locking nut (211).

5. The angular contact ball bearing pack thrust clearance measurement and adjustment device of claim 1, wherein: the dial indicator (400) is fixed on the top of the inner ring pressing plate (210) through the fixing unit (500), and the position of the measuring head (410) at the bottom of the dial indicator (400) corresponds to the position of the outer ring pressing ring (110).

6. The angular contact ball bearing assembly thrust clearance measurement and adjustment device of any one of claims 1 to 5, wherein: the inner ring pressing plate (210) and the inner ring base (230) are both of a circular structure, and the diameters of the inner ring pressing plate (210) and the inner ring base (230) are larger than the diameter of the hollow cylinder (220).

7. The angular contact ball bearing pack thrust gap measuring and adjusting apparatus of claim 5, wherein: the fixing unit (500) comprises a fixing base (520) and a fixing rod (510), wherein the fixing base (520) and the fixing rod (510) are fixed to the top of the inner ring pressing plate (210), one end of the fixing rod (510) is connected with the fixing base (520), and the other end of the fixing rod (510) is connected with the dial indicator (400).

8. The angular contact ball bearing pack thrust gap measuring and adjusting apparatus of claim 7, wherein: the fixing rod (510) comprises a fixing section arranged at the top of the fixing base (520), wherein the top of the fixing section extends outwards to form a supporting section, the bottom of the supporting section extends downwards to form a connecting section, and the bottom of the connecting section is connected with the dial indicator (400).

9. An angular contact ball bearing pack thrust gap measuring and adjusting device as claimed in claim 7 or 8, wherein: the bottom of the fixed base (520) is provided with a threaded section, a through hole matched with the threaded section is formed in the position, corresponding to the threaded section, of the inner ring pressing plate (210), and the threaded section penetrates through the through hole in the inner ring pressing plate (210) and fixes the fixed base (520) to the top of the inner ring pressing plate (210) through a fixing nut.

10. The angular contact ball bearing pack thrust clearance measurement and adjustment device of claim 1, wherein: the outer edge of the outer ring base (120) is provided with a plurality of supporting bosses (130) at even intervals around the circumferential direction, and the supporting bosses (130) extend along the direction far away from the outer ring pressure ring (110).

Technical Field

The invention relates to the technical field of bearing measurement, in particular to a thrust clearance measuring and adjusting device for an angular contact ball bearing set.

Background

The angular contact ball bearing can bear radial load and axial load at the same time, can work under high rotating speed, and has larger contact angle and higher axial bearing capacity. The contact angle refers to the angle between the connecting line of the contact points of the steel ball and the raceway in the radial plane of the angular contact ball bearing and the vertical line of the bearing axis. High precision and high speed bearings typically have a 15 contact angle, which increases under axial force.

In power generation enterprises, a large axial flow fan and a large water pump are main auxiliary machines of a power plant, and a bearing is one of the most main parts of rotating equipment. In all rotating shaft devices, the rotating shaft is typically supported for rotation by bearings, which are mounted in bearing housings. When the bearing of the equipment is damaged or reaches the use limit, the bearing needs to be replaced. Inside each bearing housing, several bearings are usually used, which are mounted on the rotating shaft, wherein the bearings for balancing the axial thrust are mostly angular contact ball bearings mounted in pairs. An inner space ring and an outer space ring are arranged between the two angular contact ball bearings, and the total thrust clearance of the bearing group reaches a qualified range by measuring and adjusting the thicknesses of the inner space ring and the outer space ring during assembly. The conventional assembly sequence is to hot-load (electrical or oil) the bearings onto the rotating shaft and then hoist them into the bearing housing as required by the process. And (3) testing and assembling all parts of the bearing box, measuring the maximum value of the relative displacement between the end face of the main shaft and the end cover of the bearing box by using a dial indicator, and judging whether the gap is qualified. And calculating the quantity to be adjusted, disassembling the bearing again, taking out the outer space ring, finally, performing finish machining on the outer space ring according to the calculated value, and repeating the steps until the total thrust gap is qualified. Therefore, it is a continuous pursuit in the industry to design a simple, practical and accurate measuring device for measuring thrust clearance of an angular contact ball bearing assembly.

Through retrieval, a large number of patents have been published on bearing measuring devices, such as chinese patent application No.: 2018114226302, the name of invention creation is: a contact angle measuring method of a non-standard angular contact ball bearing is disclosed in the application, an inner ring in the non-standard angular contact ball bearing is provided with a special-shaped boss, the number of rotation turns of an outer ring and a retainer can be accurately and rapidly measured in a mode of applying a central axial load to the non-standard angular contact ball bearing through a fixed load block, then the contact angle of the non-standard angular contact ball bearing is calculated through a formula by the aid of the contact angle and the non-standard angular contact ball bearing, a method of directly loading the fixed load block is adopted, loading is reliable and accurate, the condition that a steel ball rolls in a raceway in a pure rolling mode and does not slide in the contact angle measuring process, and contact deformation among the inner ring, the outer ring and the steel ball is not generated is ensured, the mode has the characteristics of stability, no impact, rapidness and simple operation, and one-, the method eliminates the influence of installation and positioning errors, ensures the measurement precision of the contact angle, and can be applied to standard angular contact balls besides being used for accurately and quickly measuring the contact angle of the non-standard angular contact ball bearing. The solution is a good search for bearing measuring devices, but the search for bearing measuring devices in the industry has never been stopped.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention aims to overcome the defects that the thrust clearance measurement and adjustment process is complex and laborious or the measurement is not accurate enough when the existing angular contact ball bearing is assembled, and provides the thrust clearance measurement and adjustment device for the angular contact ball bearing set, which can be used for independently trial assembling the angular contact ball bearings installed in pairs, quickens the measurement and adjustment speed and improves the accuracy of the measurement result.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the invention relates to a thrust gap measuring and adjusting device for an angular contact ball bearing set, which comprises an inner ring and an outer ring which are sequentially arranged from inside to outside, wherein the outer ring is sleeved on the periphery of the inner ring; the outer lane includes upper and lower parallel arrangement's outer lane clamping ring and outer lane base, and outer lane clamping ring and outer lane base are the loop configuration, and the installation cavity that is used for installing the inner circle is all offered at the center of outer lane clamping ring and outer lane base, and links to each other through outer joint post between outer lane clamping ring and the outer lane base, and the outside edge position of outer lane base encircles circumference and is provided with the support boss, and supports the direction extension that the outer lane clamping ring was kept away from to the boss orientation.

As a further improvement of the invention, the bottom of the outer connecting column is fixed on the outer ring base, the top of the outer connecting column is provided with a threaded section, a through hole matched with the outer connecting column is formed in the position, corresponding to the outer connecting column, of the outer ring pressing ring, and the threaded section penetrates through the through hole in the outer ring pressing ring and connects the outer ring pressing ring with the outer ring base through an outer ring locking nut.

As a further improvement of the invention, a plurality of outer connecting columns are uniformly arranged on the outer ring base at intervals around the circumferential direction.

As a further improvement of the invention, the bottom of the inner connecting column is fixed on the inner ring base, the top of the inner connecting column is provided with a threaded section, a through hole matched with the inner connecting column is arranged at a position on the inner ring pressure plate corresponding to the inner connecting column, and the threaded section passes through the through hole on the inner ring pressure plate and connects the inner ring pressure plate and the inner ring base together through the inner ring locking nut.

As a further improvement of the invention, the dial indicator is fixed on the top of the inner ring pressing plate through the fixing unit, and the position of the measuring head at the bottom of the dial indicator corresponds to the position of the outer ring pressing ring.

As a further improvement of the invention, the inner ring pressure plate and the inner ring base are both of circular structures, and the diameters of the inner ring pressure plate and the inner ring base are both larger than the diameter of the hollow cylinder.

As a further improvement of the invention, the fixing unit comprises a fixing base fixed on the top of the inner ring pressing plate and a fixing rod, one end of the fixing rod is connected with the fixing base, and the other end of the fixing rod is connected with the dial indicator.

As a further improvement of the invention, the fixed rod comprises a fixed section arranged at the top of the fixed base, wherein the top of the fixed section is provided with a supporting section in an outward extending manner, the bottom of the supporting section is provided with a connecting section in a downward extending manner, and the bottom of the connecting section is connected with the dial indicator.

As a further improvement of the invention, the bottom of the fixed base is provided with a threaded section, the position of the inner ring pressure plate corresponding to the threaded section is provided with a through hole matched with the threaded section, and the threaded section passes through the through hole on the inner ring pressure plate and fixes the fixed base on the top of the inner ring pressure plate through a fixing nut.

As a further improvement of the invention, a plurality of supporting bosses are uniformly arranged at intervals around the circumferential direction at the outer edge position of the outer ring base, and the supporting bosses extend along the direction far away from the outer ring pressure ring.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) according to the device for measuring and adjusting the thrust clearance of the angular contact ball bearing set, two angular contact ball bearings installed in pairs can be independently subjected to trial assembly, the thrust clearance is measured accurately on the premise that the steps of the traditional process are reduced, and the measuring and adjusting speed is increased.

(2) The device for measuring and adjusting the thrust clearance of the angular contact ball bearing set reduces the weight of equipment in the measuring and adjusting process, greatly reduces the risks of damage of parts and injury of personnel, does not need the matching of hoisting and hoisting, and reduces the investment of machinery.

(3) According to the angular contact ball bearing set thrust clearance measuring and adjusting device, the assembling times of the bearing box are reduced to the minimum, the possibility of abrasion of the fastening piece and the matching piece is greatly reduced, and extra workload is reduced.

(4) The invention relates to a thrust clearance measuring and adjusting device of an angular contact ball bearing set, wherein a supporting boss is arranged at the position of the outer edge of an outer ring base in a surrounding and circumferential direction and extends towards the direction far away from an outer ring compression ring, namely, the bottom of the outer ring base is not directly placed on the ground, but is placed on the ground through the supporting boss, so that after each component is in place and preliminarily fixed, the inner ring base can be in a freely downward suspended state, a measuring head of a dial indicator can be directly adjusted to be pressed on the top of the outer ring compression ring, the indication value of the dial indicator can be directly used as the initial value for measurement and adjustment, the required operation steps and auxiliary platforms are reduced on the supporting boss structure, the self weight of the component and a circular ring structure of the supporting boss are utilized to enable each component to be in place so as to conveniently and, the measuring process time is shorter, and the result is more accurate. In addition, the supporting boss structure enables the gap measuring and adjusting device of the embodiment to reduce the requirement on the flatness of the working site, and the surface of the working site within the circular ring shape range of the supporting boss only needs to be kept flat.

(5) The thrust clearance measuring and adjusting device of the angular contact ball bearing set has the advantages that the outer ring press ring and the outer ring base are both of annular structures, the design of the annular structures is consistent with the circular cross section of the angular contact ball bearing, the angular contact ball bearing can be better installed and loaded, the diameter of the outer ring pressing ring is larger than that of the inner ring pressing plate, the diameter of the outer ring base is larger than that of the inner ring base, the bottom of the whole outer side of the assembled two angular contact ball bearings is placed on the outer ring base when the bearing is used, the top of the upper bearing outer ring is pressed tightly through the outer ring pressing ring, thereby the two angular contact ball bearings installed in pairs are integrally placed on the measuring and adjusting device of the scheme for measurement, the outer sides of the two angular contact ball bearings are not easy to shake left and right or up and down, the two angular contact ball bearings are integrally fixed more firmly, and the accuracy of the measuring result is improved.

(6) According to the device for measuring and adjusting the thrust clearance of the angular contact ball bearing set, the plurality of supporting bosses are uniformly arranged at intervals around the circumferential direction at the outer edge position of the outer ring base, extend along the direction far away from the outer ring compression ring, and are arranged, so that the contact area with the ground is reduced, and the requirement on the flatness of a working site is further reduced.

Drawings

FIG. 1 is a schematic view of a thrust gap measuring and adjusting device for an angular contact ball bearing assembly according to the present invention;

FIG. 2 is a schematic structural view of section A-A of FIG. 1;

fig. 3 is a schematic structural diagram of a thrust clearance measuring and adjusting device for an angular contact ball bearing set according to the present invention.

The reference numerals in the schematic drawings illustrate:

100. an outer ring; 110. an outer ring compression ring; 111. an outer ring locking nut; 112. an outer connecting column; 120. an outer ring base; 130. supporting the boss; 200. an inner ring; 210. an inner ring pressing plate; 211. an inner ring lock nut; 212. an inner connecting post; 213. a lifting ring; 220. a hollow cylinder; 230. an inner ring base;

300. angular contact ball bearings; 310. a bearing outer race; 311. an outer space ring; 320. a bearing inner race; 321. an inner spacer ring; 330. a steel ball; 400. a dial indicator; 410. a measuring head; 500. a fixing unit; 510. fixing the rod; 520. and fixing the base.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be further described with reference to the following examples.