CN216812612U

CN216812612U - Electromagnetic flexible brake assembly for lubricating grease performance tester

Info

Publication number: CN216812612U
Application number: CN202123079743.7U
Authority: CN
Inventors: 邓帅奇; 苏红新; 刘彦菲; 李玉柱; 甄俊涛; 卢晨阳
Original assignee: Zhengzhou Zhongcheng Lubrication Technology Co ltd
Current assignee: Zhengzhou Zhongcheng Lubrication Technology Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-06-24
Anticipated expiration: 2031-12-09

Abstract

The electromagnetic flexible brake assembly for the lubricating grease performance testing machine comprises a brake base, a brake drum, a friction disc, an electromagnet, a buffer spring and a large pressure spring, wherein a plurality of guide pillars are uniformly distributed on the upper end surface of the brake base along the circumferential direction, the brake drum is installed on the brake base through a guide hole in the brake drum, the large pressure spring is arranged between the brake drum and the brake base, the electromagnet is arranged on the brake base, an annular armature is arranged on one side surface, facing the electromagnet, of the brake drum, the upper end surface of the brake drum is provided with a plurality of buffer spring seats in one-to-one correspondence with the guide holes, the buffer spring is sleeved on each buffer spring seat, and the friction disc is installed on an upper port of the brake drum and is in contact with the buffer spring. The component can be applied to a lubricating grease angular acceleration performance testing machine, and the process of slowly reducing the speed of the main shaft component when a sample box to be detected is cut off in an acceleration mode can be achieved.

Description

Electromagnetic flexible brake assembly for lubricating grease performance tester

Technical Field

The utility model relates to the technical field of angular acceleration performance testing of lubricating grease, in particular to an electromagnetic flexible brake assembly for a lubricating grease performance tester.

Background

At present, with the continuous development of industrial intelligence, industrial products are continuously upgraded and updated, and the research on various aspects related to mechanical products is also continuously deepened. In the field of centralized lubrication, the centralized lubrication of grease lubrication is more and more widely applied, and the centralized lubrication of grease lubrication is that a lubricating pump filled with lubricating grease is matched and connected with a plurality of grease conveying pipelines, and the lubricating grease is added to a friction pair needing lubrication at regular time, fixed quantity and fixed point according to a set program.

The future trend of centralized lubrication is intelligent centralized lubrication, namely grease is quantitatively supplemented according to the actual lubrication requirement of a friction pair as required, in a large-sized bearing, the distribution of the lubricating grease is not very uniform, particularly, the rotating linear speed of the bearing roller is different along with the difference of the rotating radius of the bearing roller, the lubricating grease has Bingham fluid property, namely the actual viscosity is changed along with the difference of the moving speed, so that the following performance of an oil film is different at different radiuses of the same roller, the following performance of the oil film is different, namely, part of the lubricating grease with relatively low viscosity is easy to lose. From the engineering perspective, no related detection equipment can directly detect the lubricating grease loss condition caused by uneven lubricating grease viscosity at different linear speeds.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an electromagnetic flexible brake assembly for a lubricating grease performance tester, which can be applied to a lubricating grease angular acceleration performance tester and can realize the process of slowly reducing the speed of a main shaft assembly when a sample box to be tested is cut off in an acceleration manner.

The technical scheme adopted by the utility model is as follows: the electromagnetic flexible brake assembly for the lubricating grease performance testing machine comprises a brake base, a brake drum, a friction disc, an electromagnet, a buffer spring and a large pressure spring, wherein a plurality of guide pillars are uniformly distributed on the upper end surface of the brake base along the circumferential direction, the brake drum is installed on the brake base through a guide hole in the brake drum, the large pressure spring is arranged between the brake drum and the brake base, the electromagnet is arranged on the brake base, an annular armature is arranged on one side surface, facing the electromagnet, of the brake drum, the upper end surface of the brake drum is provided with a plurality of buffer spring seats in one-to-one correspondence with the guide holes, the buffer spring is sleeved on each buffer spring seat, and the friction disc is installed on an upper port of the brake drum and is in contact with the buffer spring.

As a preferred scheme, a plurality of guide sleeves matched with the guide posts are arranged on the friction disc, the guide posts are sleeved with the guide sleeves, and the friction disc is arranged at the upper port of the brake drum.

As a preferred scheme, the guide pillars, the guide holes, the buffer spring seats and the guide sleeves are in one-to-one correspondence, and the central axes of the corresponding guide pillars, the corresponding guide holes, the corresponding buffer spring seats and the corresponding guide sleeves are overlapped.

Preferably, a buffer spring fixing sleeve for positioning the buffer spring is further arranged on the end face of the friction disc corresponding to the outer part of the guide sleeve.

Preferably, the brake base comprises a fixed disc, an annular convex structure for positioning the large pressure spring is arranged on the fixed disc, a plurality of guide pillars are uniformly distributed on the outer side of the annular convex structure along the circumferential direction, and an annular electromagnet is arranged on the outer side of each guide pillar.

Preferably, the annular armature is fixedly connected to the end face of the brake drum on the side facing the brake base.

Preferably, a limiting boss is further arranged on one side, close to the annular armature, of the outer peripheral surface of the brake drum.

Preferably, the upper end face of the friction disc is provided with a plum blossom-shaped groove structure, a plum blossom-shaped gland is mounted at the groove structure, and the plum blossom-shaped gland is tightly matched with the outer edge of the gland at the groove of the upper end face of the friction disc through gland threads.

The utility model has the beneficial effects that:

this scheme provides a flexible brake subassembly of electromagnetism for lubricating grease performance test machine through the structural design of innovation, can be applied to in the lubricating grease angle acceleration performance testing machine, can realize waiting to detect the sample box and carry out the process of slow deceleration to main shaft assembly when cutting off with higher speed, specifically does: the break-make through the electro-magnet adsorbs or releases the brake drum to the big pressure spring and the buffer spring of combination brake drum both sides are to buffer pressure's regulation, interlock the break-make of electro-magnet and drive testing machine main shaft pivoted drive arrangement simultaneously, realize when the drive disconnection, the electro-magnet loses the electricity simultaneously, carry out slow contact and make its rotational speed reduce gradually for zero to the brake disc through this electromagnetism flexible brake subassembly, the realization that this structure can be fine carries out the function of slow deceleration to the testing machine main shaft, it is simpler to have a structure, the advantage of high reliability.

Drawings

In order to more clearly illustrate the embodiments or technical solutions of the present invention in the prior art, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a structural cross-sectional view of the present invention;

FIG. 2 is a schematic structural view of a brake base;

FIG. 3 is a cross-sectional view of the brake drum;

FIG. 4 is a schematic illustration of a friction disc configuration;

FIG. 5 is a schematic structural view of a quincuncial gland;

fig. 6 is a schematic structural diagram of the present invention in an embodiment.

Detailed Description

The utility model is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

It should be noted that: unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" or "the" and similar referents in the description and claims of the present invention are not to be construed as limiting in number, but rather as indicating the presence of at least one. The word "comprise" or "comprises", and the like, indicates that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, but does not exclude other elements or items having the same function.

The existing brake device has a factor of reducing the speed too fast, so the brake device is not suitable for being used in a lubricating grease performance testing machine, because in an acceleration experiment, when the driving is powered off, if the speed of reducing the main shaft of the testing machine is too fast, lubricating grease thrown out in the test can flow back to a test sample sheet, and the accuracy of a test result is influenced; therefore, the flexible brake assembly capable of slowly reducing the speed of the main shaft of the testing machine is provided by the scheme, and the provided scheme is mainly realized based on the following structure: the brake device comprises a brake base, a large pressure spring, a brake drum, a buffer spring, a friction disc, an electromagnet and an annular armature, wherein the brake base, the large pressure spring, the brake drum, the buffer spring and the friction disc are sequentially sleeved together from bottom to top; when the electromagnet is powered off, the electromagnetic flexible brake component slowly contacts the brake disc and gradually reduces the rotating speed of the brake disc to zero.

Examples 1,

The detailed structure of the present embodiment is described below with reference to fig. 1 to 6:

as shown in fig. 1-5, the electromagnetic flexible brake assembly for the grease performance testing machine mainly comprises a brake base 71, a brake drum 74, a friction disc 75, an electromagnet 714, a buffer spring 77, a large pressure spring 78 and a ring-shaped armature 746, wherein the brake base 71, the large pressure spring 78, the brake drum 74, the buffer spring 77 and the friction disc 75 are sequentially sleeved together from bottom to top, the brake base 71 comprises a fixed disc 711, an annular protruding structure for positioning the large pressure spring 78 is arranged on the fixed disc 711, a plurality of guide posts 79 are uniformly distributed on the outer side of the annular protruding structure along the circumferential direction, the length of the guide posts is suitable for positioning and mounting the friction disc 75, and the ring-shaped electromagnet 714 is arranged on the outer side of the guide posts 79; the brake drum 74 comprises a brake drum body 741, guide holes 744 with the same number as the guide posts 79 are arranged on the brake drum body 741, the brake drum 74 is installed on the brake base 71 through the guide holes 744 on the brake drum 74, the large pressure spring 78 is arranged between the brake drum 74 and the brake base 71, a ring-shaped armature 746 is arranged on one side surface of the brake drum 74 facing the electromagnet 714, a plurality of buffer spring seats 745 corresponding to the guide holes 744 one by one are arranged on the upper end surface of the brake drum 74, a buffer spring 78 is sleeved on each buffer spring seat 745, a plurality of guide sleeves 754 matched with the guide posts 79 are arranged on the friction disc 75, the friction disc is sleeved on the guide posts 76 through the guide sleeves 754 and is installed at the upper end opening of the brake drum 74, and the lower end surface of the friction disc 75 contacts with the buffer springs 78; when the electromagnet 714 is powered on, the annular armature 746 can be adsorbed, the large pressure spring is in a compressed state, at this time, the brake drum 74 is close to the brake base 71 and drives the friction disc 75 on the brake drum to be far away from the brake disc 65 on the main shaft of the testing machine, at this time, the brake assembly does not work, when the electromagnet 714 is powered off, the annular armature 746 cannot be adsorbed, at this time, the brake drum 74 is under the elastic action of the large pressure spring 78, and drives the buffer spring and the friction disc on the brake drum to move towards the extension direction of the large pressure spring, so that the friction disc is gradually contacted with the brake disc, and the rotation speed of the main shaft of the testing machine is gradually reduced to zero.

As shown in fig. 6, the structure of the electromagnetic flexible brake assembly mounted on the spindle of the testing machine is schematically illustrated, and it can be seen from the drawing that the electromagnetic flexible brake assembly 7 and the brake disc 65 are mounted on the spindle at the same time, the upper end of the electromagnetic flexible brake assembly is a turntable assembly for mounting a sample box to be tested, and the lower end of the electromagnetic flexible brake assembly is a passive friction disc, when an active friction disc on the driving device is disengaged from the passive friction disc, the electromagnet of the electromagnetic flexible brake assembly 7 is simultaneously de-energized, and the friction disc moves in the extension direction of the large pressure spring, so that the friction disc is gradually contacted with the brake disc, and the rotation speed of the spindle of the testing machine is gradually reduced to zero.

In this embodiment, as shown in the figure, a pressing ring 73 is further provided, a pressing ring bolt 72 passes through the pressing ring 73 and is screwed into a moving ring fixing hole 713 on the brake ground, and the brake base 71 is fixedly mounted by a fixing disc bolt 712 during use.

In this embodiment, the guide posts 79, the guide holes 744, the buffer spring seats 745 and the guide sleeves 754 are in a one-to-one correspondence relationship, and the central axes of the corresponding guide posts, guide holes, buffer spring seats and guide sleeves coincide.

In this embodiment, a limiting boss 742 is further disposed on a side of the outer circumferential surface of the brake drum 74 close to the annular armature 746, a thread structure 743 is disposed in an inner hole of the brake drum 74, and the thread structure 743 is installed in a fitting manner with the quincuncial gland 76.

In this embodiment, a buffer spring fixing sleeve 753 for positioning the buffer spring 78 is further disposed on the end surface of the friction disc 75 corresponding to the exterior of the guide sleeve 754, a quincunx groove structure 755 is disposed in the inner hole of the friction disc 75, a quincunx gland 76 is mounted at the groove structure 755, and a gland outer edge 763 of the quincunx gland 76 is clamped at the groove structure of the upper end surface of the friction disc and is tightly connected with a thread structure 743 in the inner hole of the brake drum 74 through an upper gland thread 762.

The action process of each unit element in the electromagnetic flexible brake assembly is as follows:

firstly, the electromagnet is in an electrified attracting state during a power-on test, when an active friction wheel of the driving device is separated from a passive friction wheel on a main shaft of the testing machine, power is cut off, meanwhile, the electromagnet is powered off, the large pressure spring 78 ejects the annular armature 746 to drive the brake drum 74 to move towards the extension direction of the large pressure spring 78, under the action of the buffer spring 77, the end face of the friction disc 75 is in slow contact with the brake disc 65 on the main shaft of the testing machine, and the buffer spring 77 is adjustable because positive pressure is provided by the buffer spring 77, so that the rotating speed of the test turntable assembly with the sample box can be gradually reduced to zero after the rotation of a plurality of circles.

It should be noted that while the utility model has been described in terms of the above-mentioned embodiments, other embodiments are also possible. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model, and it is intended that all such changes and modifications be covered by the appended claims and their equivalents.

Claims

1. The flexible brake subassembly of electromagnetism for lubricating grease performance test machine, its characterized in that: the brake drum comprises a brake base, a brake drum, a friction disc, an electromagnet, a buffer spring and a large pressure spring, wherein a plurality of guide pillars are uniformly distributed on the upper end face of the brake base along the circumferential direction, the brake drum is installed on the brake base through a guide hole in the brake drum, the large pressure spring is arranged between the brake drum and the brake base, the electromagnet is arranged on the brake base, an annular armature is arranged on one side face, facing the electromagnet, of the brake drum, a plurality of buffer spring seats in one-to-one correspondence with the guide hole are arranged on the upper end face of the brake drum, the buffer spring is sleeved on each buffer spring seat, and the friction disc is installed at an upper port of the brake drum and contacts with the buffer spring.

2. The electromagnetic flexible brake assembly for the grease performance testing machine according to claim 1, characterized in that: the friction disc is provided with a plurality of guide sleeves matched with the guide posts, the guide posts are sleeved with the friction disc through the guide sleeves, and the friction disc is arranged at the upper port of the brake drum.

3. The electromagnetic flexible brake assembly for the grease performance testing machine according to claim 2, characterized in that: the guide pillars, the guide holes, the buffer spring seats and the guide sleeves are in one-to-one correspondence, and the central axes of the corresponding guide pillars, the corresponding guide holes, the corresponding buffer spring seats and the corresponding guide sleeves are overlapped.

4. The electromagnetic flexible brake assembly for the grease performance testing machine according to claim 2, characterized in that: and a buffer spring fixing sleeve for positioning a buffer spring is further arranged on the end face of the friction disc corresponding to the outside of the guide sleeve.

5. The electromagnetic flexible brake assembly for the grease performance testing machine according to claim 1, characterized in that: the brake base comprises a fixed disc, an annular convex structure used for positioning a large pressure spring is arranged on the fixed disc, a plurality of guide pillars are uniformly distributed on the outer side of the annular convex structure along the circumferential direction, and an annular electromagnet is arranged on the outer side of each guide pillar.

6. The electromagnetic flexible brake assembly for the grease performance testing machine according to claim 1, characterized in that: and the annular armature is fixedly connected to the end surface of the brake drum facing to one side of the brake base.

7. The electromagnetic flexible brake assembly for the grease performance testing machine according to claim 6, characterized in that: and a limiting boss is further arranged on one side, close to the annular armature, of the outer peripheral surface of the brake drum.

8. The electromagnetic flexible brake assembly for the grease performance testing machine according to claim 1, characterized in that: the friction disc upper end face is equipped with plum blossom form groove structure, installs plum blossom gland in groove structure department, plum blossom gland passes through gland screw and gland outer fringe and closely cooperates the groove department at the friction disc upper end face.