Friction resistance detection device for low-temperature lubricating oil bearing

Abstract

The utility model belongs to the technical field of bearing frictional resistance detection devices, and particularly relates to a low-temperature lubricating oil bearing frictional resistance detection device which comprises a base and a control case installed on the surface of the base, one side of the control case is connected with a heat preservation box, and an observation window is installed on the surface of the heat preservation box. A driving motor is installed on the inner wall of the control machine box, and the output end of the driving motor is connected with a positioning plate. One end of the rotating cover plate rotates on the surface of the heat preservation box along the rotating shaft, so that one end of the rotating cover plate is conveniently driven to be matched with the positioning block; meanwhile, a movable rod on the surface of a positioning block is pulled, so that a butt joint plate is limited and locked through an insertion plate, a rotary cover plate is conveniently fixed, and then it is ensured that the interior of the heat preservation box is in a low-temperature state continuously; the accuracy of detection data is improved when the bearing is subjected to continuous low-temperature detection in the heat preservation box.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing friction resistance detection device technical field, concretely relates to a low temperature lubricating oil bearing friction resistance detection device. BACKGROUND

[0002] Low temperature lubricating oil bearing friction resistance detection device is a kind of equipment specially used to test the friction resistance of bearing in low temperature environment, using low temperature lubricating oil.This device has wide application in aerospace, aviation, military, superconducting and other high-tech fields, especially in the occasion needing bearing to run in low temperature or even super low temperature environment;

[0003] Assemble test assembly, and place into heat preservation cylinder.Then inject low temperature liquid into heat preservation cylinder, make liquid completely immerse the bearing and elastic support to be measured.Cover heat preservation cover, and stand for a period of time, make test object reduce from normal temperature environment to low temperature environment, load test object by loading device, to simulate the axial force in actual work.At the same time, monitor the displacement change of test object by displacement sensor, when displacement sensor monitors the displacement mutation of test object in loading process, it indicates that relative sliding occurs between bearing and elastic support.At this time, record the inflection point of test force value change curve, obtain the test force value of the beginning of relative sliding of shafting, decompose test object, measure the total weight of pad, support rod, shaft, bearing and tightening nut.The low temperature matching static friction force of bearing and elastic support is the sum of above-mentioned total weight and above-mentioned test force value of relative sliding.

[0004] Specifically, in the process of detecting bearing in low temperature environment by using heat preservation box, it is crucial to maintain a continuous and stable low temperature condition, because any temperature fluctuation can greatly weaken the accuracy and effectiveness of bearing detection result in specific low temperature condition.Especially when we focus on the device for bearing friction resistance detection in current market, it is found that the sealing performance of part of heat preservation box is not ideal.The poor sealing condition can directly lead to the failure of temperature control in heat preservation box, and external heat can easily penetrate, thereby affecting the stability and consistency of low temperature environment, and further seriously interfering with the friction resistance detection precision and reliability of bearing in low temperature condition. UTILITY MODEL CONTENTS

[0005] The utility model discloses a low temperature lubricating oil bearing friction resistance detection device, and aims at solving the problem that it is very important to ensure maintaining a continuous and stable low temperature condition in the process of detecting bearing in low temperature environment by using the heat preservation box, because any temperature fluctuation can greatly weaken the accuracy and effectiveness of the detection result of bearing under specific low temperature condition. Especially when we focus on the device for bearing friction resistance detection in the current market, it is found that the sealing performance of part of the heat preservation box is not ideal. The poor sealing condition can directly lead to the failure of temperature control inside the heat preservation box, and the external heat is easy to penetrate, thereby affecting the stability and consistency of the low temperature environment, and further seriously interfering with the friction resistance detection precision and reliability of bearing under low temperature condition.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a low temperature lubricating oil bearing friction resistance detection device, including base and install control machine case on the base surface, one side of control machine case is connected with heat preservation box, the surface of heat preservation box is installed with observation window, the inner wall of control machine case is installed with drive motor, the output of drive motor is connected with positioning board, one side of positioning board is installed with expansion shaft, the inner wall bottom of heat preservation box is installed with positioning clamping plate, the outer side wall of base is connected with friction torque detector, the surface of friction torque detector is installed with transmission link;

[0007] The surface of the heat preservation box is provided with a rotating shaft, the surface of the rotating shaft is movably connected with a rotating cover plate, the inner wall of the rotating cover plate is connected with a sealing gasket, one end of the rotating cover plate relative to the rotating shaft is connected with a butt joint plate, one side of the heat preservation box close to the butt joint plate is connected with a positioning block, the opening of one end of the positioning block is connected with a movable rod, the other end of the movable rod is connected with a linkage plate, one side of the linkage plate is connected with a linkage spring, the other side of the linkage plate is connected with a plug-in plate.

[0008] In order to make it convenient to ensure the sealing property of the heat preservation box, as a low temperature lubricating oil bearing friction resistance detection device of the utility model, preferably, the rotating cover plate is of stainless steel material, the surface size of the rotating cover plate is greater than the top opening size of the heat preservation box, and a heat preservation layer is arranged in the heat preservation box.

[0009] In order to make it convenient to assemble the rotating cover plate, as a low temperature lubricating oil bearing friction resistance detection device of the utility model, preferably, the positioning block is provided with two, the two positioning blocks are symmetrically arranged about the center line of the heat preservation box, and the outer side wall of the butt joint plate is in contact with the inner side of the plug-in plate.

[0010] In order to make convenient to adjust the plugboard to position, as a low temperature lubricating oil bearing friction resistance detection device of the utility model, preferably, the other end of the linkage spring is connected with the opening inner wall of the positioning block, the linkage spring and the linkage plate constitute the elastic telescopic structure.

[0011] In order to make convenient to assemble the friction torque detector quickly, as a low temperature lubricating oil bearing friction resistance detection device of the utility model, preferably, the two sides of the friction torque detector are connected with the mounting plate, the surface of the mounting plate is connected with the mounting seat, and the inner side of the mounting seat is connected with the side edge of the base.

[0012] In order to make the friction torque detector directional movement, as a low temperature lubricating oil bearing friction resistance detection device of the utility model, preferably, the side of the mounting plate close to the mounting seat is connected with the sliding block, and the sliding block and the one side opening of the mounting seat constitute the sliding connection structure.

[0013] In order to make convenient to lock and fix the friction torque detector, as a low temperature lubricating oil bearing friction resistance detection device of the utility model, preferably, the side of the sliding block is connected with the screw rod, and the surface of the screw rod is threadedly connected with the nut.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The utility model discloses a low temperature lubricating oil bearing friction resistance detection device, which comprises a heat preservation box, a rotating cover plate, a sealing gasket, a positioning block, a sliding block, a screw rod and a nut. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings are used to provide further understanding of the utility model and constitute a part of the specification, are used to explain the utility model together with the embodiments of the utility model, and do not constitute the limitation to the utility model.

[0017] Figure 1 The bearing friction resistance detection device overall assembly structure schematic view provided for the embodiment of the application.

[0018] Figure 2 The driving motor mounting structure schematic view provided for the embodiment of the application.

[0019] Figure 3 The friction torque detector mounting structure schematic view provided for the embodiment of the application.

[0020] Figure 4 The sealing gasket mounting structure schematic diagram provided by the embodiment of the application.

[0021] Figure 5 The mounting plate mounting exploded structure schematic diagram provided by the embodiment of the application.

[0022] Figure 6 The A place amplification structure schematic diagram provided by the embodiment of the application.

[0023] In the figure: 1, base; 2, control cabinet; 3, heat preservation box; 31, observation window; 4, driving motor; 5, positioning plate; 6, expansion shaft; 7, positioning clamp plate; 8, friction torque detector; 9, transmission rod; 10, rotating shaft; 11, rotating cover plate; 12, sealing gasket; 13, butt joint plate; 14, positioning block; 15, movable rod; 16, linkage plate; 17, linkage spring; 18, plug-in plate; 19, mounting plate; 20, mounting seat; 21, sliding block; 22, screw; 23, nut. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figures 1-6 The utility model provides the following technical scheme: a low temperature lubricating oil bearing friction resistance detection device, including base 1 and installing control cabinet 2 on the surface of base 1, the one side of control cabinet 2 is connected with heat preservation box 3, the surface of heat preservation box 3 is installed with observation window 31, the inner wall of control cabinet 2 is installed with driving motor 4, the output end of driving motor 4 is connected with positioning plate 5, the one side of positioning plate 5 is installed with expansion shaft 6, the inner wall bottom end of heat preservation box 3 is installed with positioning clamp plate 7, the outer side wall of base 1 is connected with friction torque detector 8, the surface of friction torque detector 8 is installed with transmission rod 9;

[0026] The surface of heat preservation box 3 is installed with rotating shaft 10, the surface of rotating shaft 10 is movably connected with rotating cover plate 11, the inner wall of rotating cover plate 11 is connected with sealing gasket 12, the one end of rotating cover plate 11 relative rotating shaft 10 is connected with butt joint plate 13, the one side of heat preservation box 3 close butt joint plate 13 is connected with positioning block 14, the one end opening of positioning block 14 is connected with movable rod 15, the other end of movable rod 15 is connected with linkage plate 16, the one side of linkage plate 16 is connected with linkage spring 17, the other side of linkage plate 16 is connected with plug-in plate 18.

[0027] Preferably, the rotating cover plate 11 is made of stainless steel, the surface size of the rotating cover plate 11 is larger than the top opening size of the heat preservation box 3, and a heat preservation layer is arranged in the heat preservation box 3. In specific use, the use of the rotating cover plate 11 can ensure that the bearing is in a low-temperature state in the heat preservation box 3.

[0028] Preferably, the positioning block 14 is provided with two positioning blocks 14, and the two positioning blocks 14 are symmetrically arranged about the center line of the heat preservation box 3. The outer side wall of the abutting plate 13 is in contact with the inner side of the plug plate 18.

[0029] Preferably, the other end of the linkage spring 17 is connected with the opening inner wall of the positioning block 14, and the linkage spring 17 and the linkage plate 16 constitute an elastic telescopic structure. In specific use, the reciprocating movement of the linkage spring 17 can drive the plug plate 18 to move, thereby facilitating the stable installation of the rotating cover plate 11.

[0030] Preferably, the two sides of the friction torque detector 8 are connected with the mounting plate 19, the surface of the mounting plate 19 is connected with the mounting seat 20, and the inner side of the mounting seat 20 is connected with the side edge of the base 1. In specific use, the friction torque detector 8 is a mature technology, and the working principle is usually based on the balance method, that is, a balance torque of equal size and opposite direction is applied to the measured bearing, and the change thereof reflects the change of the actual friction torque of the measured bearing. Specifically, when the inner ring or the needle rotates at a low speed, the friction torque will drive the outer ring of the bearing to rotate due to the friction in the bearing. At this time, the torque sensor will hinder the rotation of the outer ring and maintain dynamic balance with the friction torque in the bearing. The torque sensor converts the bearing friction torque into an electric signal, which is transmitted to the computer after amplification and analog-digital conversion, and the related measurement results of the friction torque can be obtained after data processing.

[0031] Preferably, the side of the mounting plate 19 close to the mounting seat 20 is connected with the sliding block 21, and the sliding block 21 and the side opening of the mounting seat 20 constitute a sliding connection structure. In specific use, the sliding block 21 is slid along the opening on the surface of the mounting seat 20, so as to facilitate the directional assembly of the friction torque detector 8.

[0032] Preferably, the side of the sliding block 21 is connected with the screw rod 22, and the surface of the screw rod 22 is threadedly connected with the nut 23. In specific use, the nut 23 is screwed through the screw rod 22, and then the friction torque detector 8 is quickly and stably installed on one side of the base 1.

[0033] The utility model discloses a specific working principle when using: first through the one end of rotating cover plate 11 is along pivot 10 on the surface of heat preservation box 3 is rotated, the one end of convenient rotating cover plate 11 is docked with the cooperation of positioning block 14, simultaneously drives sealing washer 12 on the surface of heat preservation box 3 is sealed, at the same time, pull the movable rod 15 of positioning block 14 surface, drive linkage spring 17 to change simultaneously, simultaneously drive linkage plate 16 to move, make and insert the board 18 will docking plate 13 be limited locking, convenient rotating cover plate 11 is fixed, further ensure that heat preservation box 3 inside continuously in low temperature state, guarantee bearing in heat preservation box 3 inside continuously low temperature detection improves the accuracy of detection data, in addition through the mounting plate 19 of friction torque detector 8 side is in the inner wall of mounting seat 20 sliding butt joint, simultaneously drive sliding block 21 along the opening of mounting seat 20 surface, after screw cap 23 is screwed tightly screw rod 22, convenient friction torque detector 8 quick installation stability, after bearing is placed on expansion shaft 6, after positioning clamp 7 clamps bearing, simultaneously with transmission rod 9 and expansion shaft 6 contact, make friction torque detector 8 and expansion shaft 6 form a whole, after low temperature liquid is poured into heat preservation box 3, through the controller on base 1 control low temperature environment, further realize the purpose of bearing friction resistance detection under low temperature environment.

[0034] Finally, it should be noted that: the above only for the preferred embodiments of the utility model have, and do not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part technical feature. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A low-temperature lubricating oil bearing friction resistance detection device, comprising a base (1) and a control cabinet (2) installed on the surface of the base (1), characterized in that: The side of the control cabinet (2) is connected with the heat preservation box (3), the surface of the heat preservation box (3) is provided with an observation window (31), the inner wall of the control cabinet (2) is provided with a driving motor (4), the output end of the driving motor (4) is connected with a positioning plate (5), one side of the positioning plate (5) is provided with an expansion shaft (6), the inner wall bottom end of the heat preservation box (3) is provided with a positioning clamping plate (7), the outer side wall of the base (1) is connected with a friction torque detector (8), the surface of the friction torque detector (8) is provided with a transmission rod (9). The surface of the heat preservation box (3) is provided with a rotating shaft (10), the surface of the rotating shaft (10) is movably connected with a rotating cover plate (11), the inner wall of the rotating cover plate (11) is connected with a sealing gasket (12), one end of the rotating cover plate (11) connected with the rotating shaft (10) is connected with a butt plate (13), one side of the heat preservation box (3) close to the butt plate (13) is connected with a positioning block (14), one end of the positioning block (14) is connected with a movable rod (15), the other end of the movable rod (15) is connected with a linkage plate (16), one side of the linkage plate (16) is connected with a linkage spring (17), the other side of the linkage plate (16) is connected with a plug-in plate (18).

2. A low temperature lubricated bearing frictional resistance detection device according to claim 1, characterized in that: The rotating cover plate (11) is made of stainless steel, the surface size of the rotating cover plate (11) is greater than the top opening size of the heat preservation box (3), and a heat preservation layer is arranged in the heat preservation box (3).

3. A low temperature lubricated bearing frictional resistance detection device according to claim 1, characterized in that: The positioning block (14) is provided with two, the two positioning blocks (14) are symmetrically arranged about the center line of the heat preservation box (3), and the outer side wall of the butt plate (13) is in contact with the inner side of the plug-in plate (18).

4. A low temperature lubricated bearing frictional resistance detection device according to claim 1, characterized in that: The other end of the linkage spring (17) is connected with the opening inner wall of the positioning block (14), and the linkage spring (17) and the linkage plate (16) constitute an elastic expansion structure.

5. A low temperature lubricated bearing frictional resistance detection device according to claim 1, characterized in that: The two sides of the friction torque detector (8) are connected with mounting plates (19), the surface of the mounting plate (19) is connected with a mounting seat (20), and the inner side of the mounting seat (20) is connected with the side edge of the base (1).

6. A low temperature lubricated bearing frictional resistance detection device according to claim 5, characterized in that: The mounting plate (19) is connected with a sliding block (21) close to the mounting seat (20), and the sliding block (21) and the opening on one side of the mounting seat (20) constitute a sliding connection structure.

7. A low temperature lubricated bearing frictional resistance detection device according to claim 6, characterized in that: One side of the sliding block (21) is connected with a screw rod (22), and the surface of the screw rod (22) is threadedly connected with a nut (23).

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