CN210513990U

CN210513990U - Reciprocating type corrosion fretting wear test equipment

Info

Publication number: CN210513990U
Application number: CN201921333569.4U
Authority: CN
Inventors: 土旗; 唐正强; 赵一舟; 惠佳博; 贾通; 李俨
Original assignee: Guizhou University
Current assignee: Guizhou University
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-05-12
Anticipated expiration: 2029-08-16

Abstract

The utility model discloses a reciprocating type corruption fine motion wear test equipment, comprising a base plate, the salt fog case, vertical loading device and lateral shifting device, salt fog case lower extreme opening, bottom plate fixed seal connects at salt fog case lower extreme, bottom plate middle part fixedly connected with supporting shoe, install horizontal linear guide on the supporting shoe, be connected with lateral shifting device and lower anchor clamps on the horizontal linear guide, pressure sensor and the last anchor clamps just right with lower anchor clamps are installed in proper order to vertical loading device lower extreme, vertical loading device movable seal passes salt fog roof portion, lateral shifting device movable seal passes salt fog case lateral wall, salt fog case rear side is provided with the salt fog emergence mouth of connecting the salt fog ware, bottom plate fixed connection is on the base. The utility model discloses can realize independent fretting wear test and the corruption fretting wear test under the salt fog state, convenient operation, the fine motion precision is high, and the load is steady, can show the coefficient of wear in real time, better reaction operating condition tangential fretting wear characteristics.

Description

Reciprocating type corrosion fretting wear test equipment

Technical Field

The utility model relates to a reciprocating type corruption fine motion wear test equipment belongs to friction wear testing machine technical field.

Background

Fretting wear refers to frictional motion occurring between contact surfaces with extremely small displacement amplitude, generally, the displacement amplitude is in a micrometer-scale range, friction under working conditions of fatigue load, mechanical vibration, electromagnetic vibration or thermal cycle and the like which are approximately static is fretting friction, the motion is concealed, but the damage is obvious, and fretting can cause the contact surface of a material to be damaged, cracks are generated, and even the whole system fails. Research by related research institutions indicates that about 30% -50% of energy is consumed on friction in various forms every year worldwide, resulting in huge economic losses, and about 80% of mechanical parts fail due to various friction. Because the salt spray corrosion abrasion damage condition is severe in the using process of aerospace and marine ships, if research on corrosion abrasion mechanism is increased and appropriate measures are taken, the consumption of energy resources can be greatly saved. Therefore, the research of the corrosive frictional wear test has important guiding function for revealing the nature of the corrosive frictional wear phenomenon and correctly evaluating the influence of various factors on the corrosive frictional wear performance of the material. The corrosion friction wear testing machine can simulate the actual working condition environment relatively closely, and has great significance for exploring and verifying the corrosion friction wear mechanism and the influence factors thereof in the actual engineering machinery, so that proper measures are taken to slow down the friction wear and enhance the corrosion resistance of the material.

The Chinese patent (publication No. CN 201689023U) discloses a small displacement reciprocating rolling friction wear testing machine, which adopts a hydraulic servo system as a micro-motion driving source, and the driving mode has the advantages of large driving force and wide amplitude and frequency variation range. But the precision is low, the technology is complex, the hydraulic system is easy to leak oil, the equipment volume is large, and the method can not be applied to the loading of high-precision small samples and small loads.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: a reciprocating type corrosion fretting wear test device is provided to solve the problems in the prior art.

The utility model discloses the technical scheme who takes does: the utility model provides a reciprocating type corruption fretting wear test equipment, comprising a base plate, the salt fog case, vertical loading device and lateral shifting device, salt fog case lower extreme opening, bottom plate fixed seal connects at salt fog case lower extreme, bottom plate middle part fixedly connected with supporting shoe, install horizontal linear guide on the supporting shoe, be connected with lateral shifting device and lower anchor clamps on the horizontal linear guide, pressure sensor and the anchor clamps of going up just right with lower anchor clamps are installed in proper order to vertical loading device lower extreme, vertical loading device movable seal passes salt fog roof portion, lateral shifting device movable seal passes salt fog case lateral wall, salt fog case rear side is provided with the salt fog of connecting the salt fog ware and takes place the mouth and install salt fog humidity transducer, bottom plate fixed connection is on the base.

Preferably, above-mentioned vertical loading device includes weight box and loading pole, weight box fixed connection is in the loading pole upper end, and loading pole side fixed connection is on vertical linear guide, and vertical linear guide fixed connection draws pressure sensor one end, draws pressure sensor other end fixed connection on the adaptor, and adaptor fixed connection is on the support frame, and support frame fixed connection is on the base, and the clearance keeps between loading pole and salt fog case (loading pole inserts salt fog case upper side wall through-hole department).

Preferably, the outer section of the loading rod is connected to the outer side surface of the salt spray box through a round telescopic sleeve.

Preferably, the transverse moving device comprises a driving plate, a driving rod, a linear bearing seat, a crank-slider mechanism and a driving motor, the driving plate is of a horizontal L-shaped structure, one end of the driving rod is fixedly connected with the bending end, the driving rod is connected to the supporting plate through the linear bearing seat, the other end of the driving rod is connected to a motor shaft of the driving motor through the crank-slider mechanism, the driving motor is fixedly connected to the supporting plate, and the supporting plate is fixedly connected to the cushion block.

Preferably, the support plate is provided with a non-contact displacement sensor, and the non-contact displacement sensor faces the bending end of the drive plate.

Preferably, the front side of the salt spray box is hermetically provided with a box door, the lower end of the box door is hinged on the salt spray box, the middle part of the box door is fastened by adopting a quick clamping pliers after the upper end cover is closed, and the quick clamping pliers are arranged on the salt spray box.

Preferably, the outer section of the driving plate is connected to the outer side surface of the salt spray box through a rectangular telescopic sleeve.

Preferably, the lower clamp is of a plate-shaped structure, a groove for placing the strip-shaped test sample is formed in the middle of the upper surface, and a stud for locking the test sample is arranged on the side face of the groove.

Preferably, above-mentioned upper fixture is step axle construction, and inside the upside step of upper fixture inserted the loading pole lower extreme, pressure sensor overlapped on the upside step of upper fixture, both ends face supported respectively and leaned on loading pole lower extreme terminal surface and the terminal surface under the upside step, and the inside length of upper fixture sets up the through-hole, and terminal surface department sets up spherical surface under the through-hole, and spherical surface department places the ball, adopts the screw to insert the locking ball from the through-hole upper end.

The utility model has the advantages that: compared with the prior art, the utility model discloses the effect as follows:

(1) the utility model discloses install vertical loading device and lateral shifting device respectively on salt fog case upside and right side, load and remove the sample, can realize independent fretting wear test and the corruption fretting wear test under the salt fog state, convenient operation, the fine motion precision is high, the load is steady, load, round trip movement frequency (adopt the rotational speed of control motor to come control frequency) is adjustable, can show the wear coefficient in real time, better reaction actual condition tangential fretting wear characteristics, the range of application is extensive, can regard as the reliable test equipment of fretting wear research;

(2) the vertical loading device of the utility model is convenient to load, can monitor the loading stress in real time, adapts to friction and wear tests under different loading forces by placing weights with different weights, is additionally provided with a tension pressure sensor to one side of the loading force, can monitor the friction force in real time, has more stable and reliable measurement data and small error, avoids the vibration influence caused by a driving motor, adopts a vertical linear guide rail, has high guidance performance and balanced loading stress;

(3) the transverse moving device is high in guiding precision, the driving motor rotates to drive the driving plate to transversely move, the movement is convenient and quick, and the response is quick and sensitive;

(4) by adopting a non-contact displacement sensor, the micro-motion displacement change can be monitored in real time, and the friction push-pull force in the moving direction of the sample can be monitored by pulling the pressure sensor.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is an isometric view of a wear tester;

fig. 4 is a schematic structural view of the joint of the upper clamp.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

Example 1: as shown in fig. 1-4, a reciprocating type corrosion fretting wear test device comprises a bottom plate 20, a salt fog tank 16, vertical loading device and lateral shifting device, 16 lower extreme openings of salt fog case, bottom plate 20 fixed seal connects at the 16 lower extremes of salt fog case, bottom plate 20 middle part fixedly connected with supporting shoe 3, the guide rail strip of fixedly connected with horizontal linear guide 4 on the supporting shoe 3, horizontal linear guide 4's slider is connected with lateral shifting device and lower anchor clamps 5, pressure sensor 8 and the last anchor clamps 7 just right with lower anchor clamps 5 are installed in proper order to vertical loading device lower extreme, vertical loading device movable seal passes salt fog case 16 top, lateral shifting device movable seal passes salt fog case 16 lateral wall, salt fog 16 rear side is provided with the salt fog emergence mouth 14 of connecting the salt fog ware and installs salt fog humidity transducer 6, bottom plate 20 fixed connection is on base 1.

Preferably, the above-mentioned vertical loading device includes weight box 13 and loading pole 9, weight box 13 fixed connection is in loading pole 9 upper end, loading pole 9 side fixed connection is at the guide rail strip on vertical linear guide 12, the 11 one end of pressure sensor is drawn to the slider fixed connection of vertical linear guide 12, draw 11 other end fixed connection of pressure sensor on adaptor 10, adaptor 10 fixed connection is on support frame 2, support frame 2 fixed connection is on base 1, keep the clearance between loading pole 9 and salt fog case 16 (loading pole inserts salt fog case upper wall through-hole department), be convenient for draw the pressure measurement frictional force size.

Preferably, the outer section of the loading rod 9 is connected to the outer side surface of the salt spray box 16 through a round telescopic sleeve 15, so that the loading rod and the salt spray box can be sealed, the salt spray is prevented from corroding other components, and the concentration of the salt spray in the salt spray box is stabilized.

Preferably, the transverse moving device comprises a driving plate 18, a driving rod 22, a linear bearing seat 27, a crank-slider mechanism 26 and a driving motor 24, the driving plate 18 is of a horizontal L-shaped structure, one end of the driving rod 22 is fixedly connected with a bending end, the driving rod 22 is connected to a supporting plate 28 through the linear bearing seat 27, the other end of the driving rod 22 is connected to a motor shaft of the driving motor 24 through the crank-slider mechanism 26, the driving motor 24 is fixedly connected to the supporting plate 28, the supporting plate 28 is fixedly connected to a cushion block 25, and the crank-slider mechanism converts the rotating motion of the motor shaft of the driving motor into the linear motion of the driving rod, so that the reciprocating motion of the.

Preferably, the supporting plate 28 is provided with a non-contact displacement sensor 23, the non-contact displacement sensor 23 faces the bending end of the driving plate 18, the non-contact displacement sensor 23 is a laser displacement sensor, and the reflection end of the laser displacement sensor is mounted on the driving plate 18 and used for collecting displacement data.

Preferably, a box door 19 is hermetically installed on the front side of the salt spray box 16, the lower end of the box door 19 is hinged to the salt spray box 16, the middle part of the box door is fastened by a quick clamping pliers 17 after the upper end cover is closed, the quick clamping pliers 17 is installed on the salt spray box 16, and a sealing rubber gasket is arranged between the box door 19 and the salt spray box 16, so that the sealing and fixing of the box door can be quickly realized.

Preferably, the outer section of the driving plate 18 is connected to the outer side of the salt spray box 16 through a rectangular telescopic sleeve 21, so that the sealing between the driving plate and the salt spray box can be realized, the corrosion of salt spray to other components is avoided, and the concentration of the salt spray inside is stabilized.

The pulling pressure sensor 11, the pressure sensor 8, the displacement sensor 23 and the salt fog humidity sensor 6 are connected to a data acquisition terminal, and the data acquisition terminal is connected to an upper computer.

The salt fog box 16 is made of an acrylic plate with strong corrosion resistance, and corrosion-resistant coatings are arranged on the surfaces of the upper clamp 7, the lower clamp 5 and the loading rod 9 inside the salt fog box.

Preferably, the lower fixture 5 is a plate-shaped structure, a groove for placing a strip-shaped sample is arranged in the middle of the upper surface, and a stud 32 for locking the sample is arranged on the side surface of the groove.

Preferably, the upper clamp 7 is of a stepped shaft structure, as shown in fig. 4, the upper step of the upper clamp 7 is inserted into the lower end of the loading rod 9, the pressure sensor 8 is sleeved on the upper step of the upper clamp 7, two end surfaces respectively abut against the lower end surface of the loading rod 9 and the lower end surface of the upper step, the inner length of the upper clamp 7 is provided with a through hole, the lower end surface of the through hole is provided with a spherical surface (equal to the diameter of a grinding ball), the grinding ball 30 is placed at the spherical surface, the locking screw 29 is used for inserting the locking grinding ball 30 from the upper end of the through hole, the lower end of the locking screw 29 is provided with a stepped platform, the lower end surface of the stepped platform is provided with a spherical groove with the same diameter of the grinding ball.

The upper clamp 7 is designed as a special clamp for a grinding ball and is connected with a pressure sensor 8 at the upper part through a locking screw, the pressure sensor 8 is propped against between the upper clamp 7 and a loading rod 9, the load of a weight box at the top is transferred to the steel grinding ball 30 through the loading rod 9, and data is read out from the pressure sensor; the lower clamp 5 adopts a clamping mode of a stud 32 and a groove to lock a sample 31, a driving plate is connected with a slide block of a linear guide rail at the bottom through a bolt, the outside of the driving plate is connected with a driving rod connected with a slider-crank mechanism 26 through a screw, the other end of the slider-crank mechanism 26 is connected with a driving motor 24, a laser displacement sensor is arranged on a supporting plate, the reflection end of the laser displacement sensor is arranged on the driving plate 18 and is used for collecting displacement data, a salt fog access port 14 is accessed into a salt fog device, the salt fog humidity sensor 6 is used for measuring the concentration change of the fed-back salt fog, the loading rod 9 and the salt fog box 16 are sealed through the cylindrical sealing telescopic sleeve 15, the rectangular elastic telescopic sleeve 21 is used for sealing the drive plate and the salt fog box 16, the bottom of the box body of the salt fog box 16 is sealed with the salt fog box 16 through the salt fog box bottom plate 20, and the quick clamping pliers 17 is combined with the box cover 19 and a sealing ring is added to seal the box body.

The utility model adopts a servo driving motor as a power source, the rotation speed of the equipment is convenient to control, the precision is high, the frequency is adjustable, the signal is controlled by a control system computer program, and a plurality of signal drives (sine wave, triangular wave, rectangular wave and the like) can be realized; the high-precision linear bearing is used as a sliding device, so that the frictional resistance in the reciprocating stroke is reduced, the accuracy of the experiment is improved, and reliable experimental equipment is provided for the research of the corrosion fretting wear.

A reciprocating type fretting wear test device for corrosion is prepared as setting smoke box and bottom plate together by screw before test, loading grinding ball in upper clamp, loading sample to be tested in lower clamp, fastening sample by screw bolt on side of lower clamp, clamping grinding ball by rotation of upper clamp, sealing box door by quick clamp after grinding ball and sample are loaded, connecting salt fog generator to salt fog generator by salt fog generating port and setting salt fog humidity sensor, regulating salt fog concentration in whole tester by salt fog generating port, connecting power supply when set concentration is reached, controlling frequency of whole test and reciprocating motion by controlling rotation speed of servo motor, converting rotary motion to reciprocating motion by crank-slide block mechanism and driving sample to move horizontally by driving plate, this experiment machine passes through the weight loading, on the weight box at top is loaded through selecting suitable weight, the weight of weight box passes through the loading pole and transmits to on the ball mill, thereby realize the simulation to its specific operating mode, the size of frictional force when drawing pressure sensor to measure through weight and installation and carrying out reciprocating motion, pressure sensor through last anchor clamps upside comes the size of direct measurement loading force, measure the size of salt fog concentration through salt fog humidity transducer, measure the size of drive plate reciprocating motion amplitude through laser displacement sensor, the data of gathering include loading force, displacement and frictional force, these data are gathered in real time through data acquisition card, send and do data processing on next step for the computer.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention, therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A reciprocating type corrosion fretting wear test equipment is characterized in that: comprises a bottom plate (20) and a salt fog box (16), vertical loading device and lateral shifting device, salt fog case (16) lower extreme opening, bottom plate (20) fixed sealing connects at salt fog case (16) lower extreme, bottom plate (20) middle part fixedly connected with supporting shoe (3), install horizontal linear guide (4) on supporting shoe (3), be connected with lateral shifting device and lower anchor clamps (5) on horizontal linear guide (4), pressure sensor (8) and last anchor clamps (7) just right with lower anchor clamps (5) are installed in proper order to vertical loading device lower extreme, vertical loading device movable seal passes salt fog case (16) top, lateral shifting device movable seal passes salt fog case (16) lateral wall, salt fog case (16) rear side is provided with salt fog emergence mouth (14) of connecting the salt fog ware and installs salt fog humidity transducer (6), bottom plate (20) fixed connection is on base (1).

2. The reciprocating corrosion fretting wear test apparatus of claim 1, wherein: vertical loading device includes weight box (13) and loading pole (9), weight box (13) fixed connection is in loading pole (9) upper end, loading pole (9) side fixed connection is on vertical linear guide (12), vertical linear guide (12) fixed connection draws pressure sensor (11) one end, draw pressure sensor (11) other end fixed connection on adaptor (10), adaptor (10) fixed connection is on support frame (2), support frame (2) fixed connection is on base (1), keep the clearance between loading pole (9) and salt fog case (16).

3. The reciprocating corrosion fretting wear test apparatus of claim 2, wherein: the outer section of the loading rod (9) is connected to the outer side surface of the salt spray box (16) through a round telescopic sleeve (15).

4. The reciprocating corrosion fretting wear test apparatus of claim 1, wherein: the transverse moving device comprises a driving plate (18), a driving rod (22), a linear bearing seat (27), a crank-slider mechanism (26) and a driving motor (24), wherein the driving plate (18) is of a horizontal L-shaped structure, one end of the driving rod (22) is fixedly connected with a bending end, the driving rod (22) is connected to a supporting plate (28) through the linear bearing seat (27), the other end of the driving rod (22) is connected to a motor shaft of the driving motor (24) through the crank-slider mechanism (26), the driving motor (24) is fixedly connected to the supporting plate (28), and the supporting plate (28) is fixedly connected to a cushion block (25).

5. The reciprocating corrosion fretting wear test apparatus of claim 4, wherein: a non-contact displacement sensor (23) is mounted on the supporting plate (28), and the non-contact displacement sensor (23) is opposite to the bending end of the driving plate (18).

6. The reciprocating corrosion fretting wear test apparatus of claim 4, wherein: the front side of the salt spray box (16) is hermetically provided with a box door (19), the lower end of the box door (19) is hinged on the salt spray box (16), the middle part of the box door is fastened by adopting quick clamping pliers (17) after the upper end cover is closed, and the quick clamping pliers (17) are arranged on the salt spray box (16).

7. The reciprocating corrosion fretting wear test apparatus of claim 4, wherein: the outer section of the driving plate (18) is connected to the outer side surface of the salt spray box (16) through a rectangular telescopic sleeve (21).

8. The reciprocating corrosion fretting wear test apparatus of claim 1, wherein: the lower clamp (5) is of a plate-shaped structure, a groove for placing a strip-shaped sample is formed in the middle of the upper surface, and a stud (32) for locking the sample is arranged on the side face of the groove.

9. The reciprocating corrosion fretting wear test apparatus of claim 1, wherein: go up anchor clamps (7) and be the step axle construction, it is inside that the upside step of going up anchor clamps (7) inserted loading pole (9) lower extreme, pressure sensor (8) cover is on the upside step of last anchor clamps (7), the both ends face supports respectively and leans on loading pole (9) lower extreme terminal surface and the terminal surface under the upside step, it sets up the through-hole to go up anchor clamps (7) inside length, terminal surface department sets up spherical face under the through-hole, ball (30) are placed to spherical face department, adopt locking screw (29) to insert locking ball (30) from the through-hole upper end.