CN111571181B - Thrust clearance measuring and adjusting device for angular contact ball bearing set - Google Patents
Thrust clearance measuring and adjusting device for angular contact ball bearing set Download PDFInfo
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- CN111571181B CN111571181B CN202010483480.7A CN202010483480A CN111571181B CN 111571181 B CN111571181 B CN 111571181B CN 202010483480 A CN202010483480 A CN 202010483480A CN 111571181 B CN111571181 B CN 111571181B
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Abstract
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.
Description
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-time clamping positioning is adopted for central axial load loading, 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 visually check the flatness, and the next step of work can be carried out without adjustment, 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.
Example 1
As shown in fig. 1 and 2, the angular contact ball bearing 300 includes a bearing inner ring 320 and a bearing outer ring 310 arranged from inside to outside, and the bearing inner ring 320 and the bearing outer ring 310 are connected by a steel ball 330. Most of the bearings for balancing the axial thrust are the angular contact ball bearings 300 installed in pairs, the inner spacer 321 and the outer spacer 311 are installed between the two angular contact ball bearings 300, that is, the inner spacer 321 is installed between the inner bearing rings 320 of the two angular contact ball bearings 300 installed in pairs, the outer spacer 311 is installed between the outer bearing rings 310 of the two angular contact ball bearings 300, and the outer spacer 311 needs to be measured and adjusted during assembly, so that the total thrust clearance of the bearing set reaches a qualified range. The conventional assembly sequence of the angular contact ball bearing 300 is that the angular contact ball bearing 300 is firstly hot-mounted (electrically heated or oil heated) on a main shaft and is hoisted into a bearing box according to the process requirements. After all the components in the bearing box are completely assembled through trial assembly, the maximum value of the relative displacement between the end face of the main shaft and the end cover of the bearing box is measured through the dial indicator 400, and whether the gap is qualified or not is judged. And then calculating the quantity to be adjusted, disassembling the angular contact ball bearing 300 and the bearing box again, taking out the outer spacing ring 311 between the two angular contact ball bearings 300, finally, performing finish machining on the thickness of the outer spacing ring 311 according to the calculated value, and repeating the steps until the finally measured total thrust clearance of the angular contact ball bearing 300 meets the requirement. The above process steps may need to be repeated at least 2 to 3 times, or even more, resulting in a huge assembly effort and long assembly time. Meanwhile, the weight of the bearing box of the large axial flow fan and the water pump in the power plant reaches 1 ton to 2 tons, and the specification and the weight of the angular contact ball bearing 300 are also large. In the assembling process, the hoisting and hoisting are matched, the bearing box needs to be rolled for many times, and very high potential safety hazards are brought to equipment and workers. Repeatedly tear open, adorn the operation to the bearing box, not only can cause the damage of the inside accurate fit part of bearing box, greatly reduced the life of equipment, still additionally increased equipment cost of maintenance. The thrust clearance measuring and adjusting device for the angular contact ball bearing set can solve the problems, and by directly and individually trial-assembling the angular contact ball bearings 300 installed in pairs, the process steps are reduced, and the measuring and adjusting speed is increased.
With reference to fig. 1 to fig. 3, the angular contact ball bearing set thrust gap measuring and adjusting device of this embodiment includes an inner ring 200 and an outer ring 100 that are sequentially arranged from inside to outside, the outer ring 100 is sleeved on the periphery of the inner ring 200, wherein the inner ring 200 includes a hollow cylinder 220, the upper and lower axial ends of the hollow cylinder 220 are respectively provided with an inner ring pressure plate 210 and an inner ring base 230, the outer edge positions of the inner ring pressure plate 210 and the inner ring base 230 both extend beyond the periphery of the hollow cylinder 220, specifically, as shown in fig. 3, the inner ring pressure plate 210 and the inner ring base 230 both have a circular structure, and the diameters of the inner ring pressure plate 210 and the inner ring base 230 are both larger than the diameter of the hollow cylinder 220. The inner ring base 230 and the hollow cylinder 220 are of an integrally formed structure, the diameter of the inner ring base 230 is larger than that of the hollow cylinder 220, a reserved space is convenient to place the bearing inner ring 320, when the inner ring pressing plate is used, the inner walls of the bearing inner rings 320 of the two assembled angular contact ball bearings 300 can be attached to the outer side wall of the hollow cylinder 220, the bottom of the bearing inner ring 320 below is placed on the inner ring base 230, meanwhile, the integral height of the two bearing inner rings 320 and the middle inner spacer 321 is larger than that of the hollow cylinder 220, so that the inner ring pressing plate 210 can press the integral inner sides of the two assembled angular contact ball bearings 300 from the upper side of the bearing inner rings 320 above, the two angular contact ball bearings 300 cannot shake left and right or up and down in the process of being lifted upwards, and the measuring result is more accurate. As shown in fig. 1, in this embodiment, the top of the inner ring pressure plate 210 is further provided with a lifting ring 213, so that a steel wire rope penetrates through the lifting ring to lift the inner ring 200 integrally upward during measurement, specifically, two sides of the top of the inner ring pressure plate 210 are provided with one lifting ring 213, a connection line of the two lifting rings 213 is a radial connection line of the inner ring pressure plate 210, when measurement is performed, the steel wire rope penetrates through the two lifting rings 213 to lift the inner ring 200 integrally upward, so that the lifting force is more balanced, and the lifting process is more stable.
As shown in fig. 2, in the present embodiment, the inner ring pressing plate 210 and the hollow cylinder 220 are detachably connected to each other, so as to conveniently place and press the bearing inner ring 320, specifically, in the present embodiment, the inner ring pressing plate 210 and the inner ring base 230 are connected to each other through the inner connecting post 212, specifically, in the present embodiment, the bottom of the inner connecting post 212 is fixed on the inner ring base 230, the top of the inner connecting post 212 is provided with a threaded section, a through hole matched with the inner connecting post 212 is formed at a position of the inner ring pressing plate 210 corresponding to the inner connecting post 212, the thread section passes through the through hole on the inner ring pressure plate 210 and connects the inner ring pressure plate 210 and the inner ring base 230 together through the inner ring lock nut 211, adopts thread connection, is simple and convenient, and the two assembled angular contact ball bearings 300 are conveniently sleeved on the outer periphery of the hollow cylinder 220 from the upper part of the hollow cylinder 220 to the lower part of the inner side of the whole body, thereby integrally fixing the assembled two angular contact ball bearings 300 inside to the inner ring 200.
As shown in fig. 1, in this embodiment, the top of the inner ring pressure plate 210 is further provided with a dial indicator 400 for measuring a total thrust gap between the two angular contact ball bearings 300, so as to conveniently adjust the thickness of the outer cage ring 311 at any time, and finally make the total thrust gap between the two assembled angular contact ball bearings 300 meet the assembly requirement. Specifically, in this embodiment, 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, when in use, the measuring head 410 at the bottom of the dial indicator 400 is always pressed on the top of the outer ring pressing ring 110, so that the maximum displacement difference between the bearing inner ring 320 and the bearing outer ring 310, that is, the total thrust gap, can be measured.
As shown in fig. 2 and fig. 3, in the embodiment, the outer ring 100 includes an outer ring press ring 110 and an outer ring base 120 which are arranged in parallel up and down, the centers of the outer ring press ring 110 and the outer ring base 120 are both provided with installation cavities for installing the inner ring 200, specifically, in this embodiment, both the outer ring press ring 110 and the outer ring base 120 are of annular structures, the annular structures are designed to conform to the circular cross section of the angular contact ball bearing 300, and the angular contact ball bearing 300 can be better installed and supported, and the diameter of the outer ring press ring 110 is greater than that of the inner ring press ring 210, and the diameter of the outer ring base 120 is greater than that of the inner ring base 230, when in use, the bottom of the whole outer side of two assembled angular contact ball bearings 300 is placed on the outer ring base 120, and the top of the upper bearing outer ring 310 is pressed by the outer ring press ring 110, so that the two angular contact ball bearings 300 installed in pair are integrally placed on the measuring and adjusting device of this embodiment for measurement, at this time, the outer sides of the two angular contact ball bearings 300 are not easy to shake left and right or up and down, so that the two angular contact ball bearings 300 are integrally fixed more firmly, and the accuracy of the measurement result is improved. As shown in fig. 2, in the present embodiment, the outer ring press ring 110 is connected to the outer ring base 120 through the outer connecting column 112. Specifically, in this embodiment, the bottom of the outer connecting column 112 is fixed on the outer ring base 120, a threaded section is disposed at the top of the outer connecting column 112, a through hole matched with the outer connecting column 112 is formed in a position, corresponding to the outer connecting column 112, on the outer ring press ring 110, and the threaded section penetrates through the through hole on the outer ring press ring 110 and connects the outer ring press ring 110 and the outer ring base 120 together through the outer ring lock nut 111.
The even interval of circumference is provided with a plurality of outer joint posts 112 on outer lane base 120 in this embodiment, specifically, as shown in fig. 1, the even interval of circumference is provided with 3 outer joint posts 112 on outer lane base 120 in this embodiment, and the bearing inner race 310 to the top is fixed to convenient diversified, and fixed effect is more stable, difficult emergence not hard up phenomenon during the measurement. As shown in fig. 2, in this embodiment, the outer edge of the outer ring base 120 is circumferentially provided with the supporting bosses 130, and the supporting bosses 130 extend in a direction away from the outer ring press ring 110, that is, the bottom of the outer ring base 120 is not directly placed on the ground, but is placed on the ground through the supporting bosses 130, so as to ensure that after each component is in place and preliminarily fixed, the inner ring base 230 can be in a free downward suspension state, at this time, the measuring head 410 of the dial indicator 400 can be directly adjusted to be pressed on the top of the outer ring press ring 110, the indication value of the dial indicator 400 can be directly used as an initial value for measurement and adjustment, the supporting bosses 130 structurally reduce required operation steps and auxiliary platforms, and by using the self weight of the component and the circular ring structure of the supporting bosses 130, each component is in place to facilitate visual inspection of flatness, and usually, the next operation can be performed without adjustment, so that the time of the measurement process is shorter, the result is more accurate. In addition, the supporting boss 130 structure makes the gap measuring and adjusting device of this embodiment reduce the requirement for the flatness of the work site, and only needs to keep the surface of the work site within the circular ring shape range of the supporting boss 130 flat. As shown in fig. 1, in this embodiment, a plurality of supporting bosses 130 are uniformly arranged at intervals around the circumferential direction at the outer edge of the outer ring base 120, the supporting bosses 130 extend in the direction away from the outer ring pressure ring 110, and the arrangement of the plurality of supporting bosses 130 reduces the contact area with the ground, thereby further reducing the requirement on the flatness of the work site. Specifically, in the present embodiment, the outer edge of the outer ring base 120 is provided with 3 supporting bosses 130 at equal intervals around the circumference.
When the adjusting and measuring device is used specifically, firstly, the adjusting and measuring device of the embodiment is placed on the ground, and the two angular contact ball bearings 300 installed in pair are assembled into an integral structure and then placed on the adjusting and measuring device of the embodiment, so that the inner sides of the two assembled integral angular contact ball bearings 300 are attached to the inner ring 200, the outer sides of the two assembled integral angular contact ball bearings 300 are placed on the outer ring 100, and the inner and outer sides of the two assembled integral angular contact ball bearings 300 are fixed on the inner ring base 230 and the outer ring base 120 through the inner ring pressing plate 210 and the outer ring pressing ring 110 respectively; then, a measuring head 410 of the dial indicator 400 is pressed on the top of the outer ring pressing ring 110, an initial numerical value of the dial indicator 400 is adjusted and recorded, a steel wire rope penetrates through a lifting ring on the top of the inner ring pressing plate 210, a jack is used as lifting power in the lifting process, labor is saved, when the inner ring 200 and the two bearing inner rings 320 attached to the outer sides of the inner ring 200 are lifted upwards and vertically to a certain position, the two bearing outer rings 310 on the outer sides are still in a standing state, relative to the initial numerical value, the dial indicator 400 generates a change value, the change value is a maximum relative displacement difference value between the inner ring pressing plate 210 and the outer ring pressing ring 110, and is also a maximum relative displacement difference value between the bearing inner ring 320 and the bearing outer ring 310, and the maximum relative displacement difference value is a total thrust gap between the two angular contact ball bearings 300 to be measured. If the measured total thrust clearance does not meet the use standard, only the inner ring lock nut 211 and the outer ring lock nut 111 on the measuring and adjusting device need to be disassembled, the two assembled angular contact ball bearings 300 can be easily taken out, the outer spacing ring 311 is taken out, and the thickness of the outer spacing ring 311 is processed and adjusted according to the calculated value. The measuring and adjusting device of the embodiment has the advantages of simple structure, high practicability, low manufacturing cost, safety and reliability. By adopting the measuring and adjusting device of the embodiment, the two angular contact ball bearings 300 installed in pairs can be independently subjected to trial assembly, so that the thrust clearance can be accurately measured on the premise of reducing the steps of the traditional process, and the measuring and adjusting speed is increased; the assembly times of the bearing box are reduced to the minimum, the possibility of abrasion of the fastener and the matching piece is greatly reduced, and the additional workload is reduced. Meanwhile, the weight of equipment in the measurement and adjustment process is reduced, the risks of damage of parts and injury of personnel are greatly reduced, the matching of hoisting and hoisting is not needed, and the investment of machinery is reduced.
Example 2
The structure of the angular contact ball bearing set thrust gap measuring and adjusting device of this embodiment is substantially the same as that of embodiment 1, and further, as shown in fig. 2, in this embodiment, the fixing unit 500 includes a fixing base 520 fixed on the top of the inner ring pressing plate 210 and a fixing rod 510, one end of the fixing rod 510 is connected to the fixing base 520, and the other end of the fixing rod 510 is connected to the dial indicator 400. The fixing rod 510 includes a fixing section disposed at the top of the fixing base 520, wherein a supporting section is disposed on the top of the fixing section in an outward extending manner, a connecting section is disposed on the bottom of the supporting section in a downward extending manner, and the bottom of the connecting section is connected to the dial indicator 400.
In this embodiment, a detachable connection manner is adopted between the fixed base 520 and the inner ring pressing plate 210, specifically, a thread section is arranged at the bottom of the fixed base 520 in this embodiment, a through hole matched with the thread section is formed in a position of the inner ring pressing plate 210 corresponding to the thread section, the thread section penetrates through the through hole in the inner ring pressing plate 210 and fixes the fixed base 520 on the top of the inner ring pressing plate 210 through a fixing nut, and the threaded connection is simple and easy to obtain, and is convenient to detach and replace.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (5)
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 (210) and the inner ring base (230) are of circular structures, and the diameters of the inner ring pressing plate (210) and the inner ring base (230) are larger than that of the hollow cylinder (220); the outer edge positions of the inner ring pressing plate (210) and the inner ring base (230) extend beyond the periphery of the hollow cylinder (220), the inner ring pressing plate (210) is connected with the inner ring base (230) through an inner connecting column (212), the bottom of the inner connecting column (212) is fixed on the inner ring base (230), a threaded section is arranged at the top of the inner connecting column (212), 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) with the inner ring base (230) through an inner ring locking nut (211); the top of the inner ring pressing plate (210) is also provided with a dial indicator (400), the dial indicator (400) is fixed on the top of the inner ring pressing plate (210) through a fixing unit (500), and the position of a measuring head (410) at the bottom of the dial indicator (400) corresponds to the position of the outer ring pressing ring (110); the outer ring (100) comprises an outer ring press ring (110) and an outer ring base (120) which are arranged in parallel up and down, the outer ring press ring (110) and the outer ring base (120) are both of an annular structure, the centers of the outer ring press ring (110) and the outer ring base (120) are both provided with installation cavities for installing the inner ring (200), the outer ring press ring (110) is connected with the outer ring base (120) through an outer connecting column (112), a plurality of outer connecting columns (112) are uniformly arranged on the outer ring base (120) at intervals around the circumferential direction, the bottoms of the outer connecting columns (112) are fixed on the outer ring base (120), a thread section is arranged at the top of each outer connecting column (112), through holes matched with the outer connecting columns (112) are arranged on the outer ring press ring (110) at positions corresponding to the outer connecting columns (112), the thread section penetrates through a through hole in the outer ring press ring (110) and connects the outer ring press ring (110) and the outer ring base (120) together through an outer ring locking nut (111); the outer edge of the outer ring base (120) is circumferentially provided with a support boss (130), and the support boss (130) extends towards the direction far away from the outer ring pressure ring (110).
2. The angular contact ball bearing pack thrust clearance measurement and adjustment device of claim 1, 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).
3. The angular contact ball bearing pack thrust gap measuring and adjusting apparatus of claim 2, 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).
4. An angular contact ball bearing pack thrust gap measuring and adjusting device as claimed in claim 2 or 3, 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.
5. 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).
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| CN113074611B (en) * | 2021-03-29 | 2023-08-29 | 势加透博洁净动力如皋有限公司 | Air compressor machine leaf top clearance measurement frock |
| CN113483713A (en) * | 2021-06-30 | 2021-10-08 | 人本股份有限公司 | Bearing tool for detecting axial clearance of rolling bearing |
| CN114235401B (en) * | 2021-11-29 | 2023-08-11 | 洛阳轴承研究所有限公司 | Spacer for angular contact ball bearing measurement and contact angle measurement method |
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