Linear variable-stroke reciprocating type high-temperature friction wear testing machine

Abstract

The invention provides a linear variable stroke reciprocating friction wear testing machine, which comprises a rack, a reciprocating motion mechanism on the rack, a tubular resistance heating furnace and a loading mechanism, the reciprocating motion mechanism is used for providing linear reciprocating motion required by friction motion, and the loading mechanism is used for providing vertical load required by friction motion. And the tubular resistance heating furnace is used for keeping the test temperature of the friction-wear test workpiece. The friction and wear behaviors of materials under different working conditions can be effectively researched by changing the length of the friction stroke, the structural design is scientific and reasonable, operation is easy, and the using effect is good.

Description

Technical Field

[0001] The invention relates to a friction test device, in particular to a linear variable stroke reciprocating high temperature friction and wear testing machine. Background Art

[0002] Traditional friction and wear testing equipment often cannot effectively simulate the wear characteristics under different stroke lengths when conducting linear reciprocating friction and wear experiments. The singleness of the stroke length limits its application range and cannot meet the needs of specific experiments for stroke changes. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a linear variable stroke reciprocating high temperature friction and wear testing machine in view of the deficiencies of the above-mentioned prior art. The device can effectively study the friction and wear behavior of materials under different working conditions by changing the length of the friction stroke. The structural design is scientific and reasonable, the operation is simple, and the use effect is good.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a linear variable-stroke reciprocating high-temperature friction and wear testing machine, characterized in that it includes a frame, a reciprocating motion mechanism, a tubular resistance heating furnace and a loading mechanism on the frame, the reciprocating motion mechanism is used to provide the linear reciprocating motion required for the friction motion, the loading mechanism is used to provide the vertical load required for the friction motion, and the tubular resistance heating furnace is used to maintain the test temperature of the friction and wear test workpiece.

[0005] Preferably, the reciprocating motion mechanism includes a support seat, a synchronous belt module, a connecting arm and a friction rod. The support seat is fixedly mounted on the frame, the synchronous belt module is fixedly mounted on the support seat, the slider of the synchronous belt module is connected to the friction rod through the connecting arm, and the friction rod extends into the tubular resistance heating furnace and contacts the top surface of the test workpiece.

[0006] Preferably, the slider of the synchronous belt module is connected to the connecting arm via a first air floating block, the slider of the synchronous belt module is also connected to the connecting arm via a first stress strain sensor, and the connecting arm is provided with an acceleration sensor.

[0007] Preferably, the slider of the synchronous belt module is connected to the insulation plate through a guide rod, the top surface of the tubular resistance heating furnace is provided with a through groove for reciprocating motion of the friction rod, the insulation plate slides and covers the through groove, the friction rod vertically passes through the insulation plate, the insulation plate and the friction rod move synchronously, the connecting arm is provided with a second air flotation block connected to the loading mechanism, and a counterweight block is provided at the end of the connecting arm away from the friction rod.

[0008] Preferably, the loading mechanism includes a fixed seat, a screw module, a servo motor and an air-floating guide rail, the fixed seat is fixedly mounted on the frame, the screw module is fixedly mounted on the fixed seat, a movable seat is mounted on the screw of the screw module, the movable seat is slidably connected to the fixed seat, the movable seat is fixedly connected to the air-floating guide rail through a guide rod, a linear bearing is provided on the guide rod, the linear bearing is fixedly mounted on the fixed seat, the air-floating guide rail is adaptably connected to the second air-floating block, the servo motor is fixedly mounted on the fixed seat, and the output shaft of the servo motor is connected to the screw of the screw module.

[0009] Preferably, a second stress-strain sensor is arranged between the air-floating guide rail and the screw module, and a spring is arranged between the second stress-strain sensor and the screw module to ensure that the displacement distance of the screw module is increased when a load is applied, thereby improving data accuracy.

[0010] Preferably, a heat insulation board limiting frame is fixedly mounted on the frame, and a slide groove which slidably cooperates with the heat insulation board is provided on the heat insulation board limiting frame.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. The present invention has adjustable stroke: by changing the rotation angle of the motor, dynamic adjustment of the stroke can be achieved during operation.

[0013] 2. The present invention has accurate measurement: the reciprocating parts are suspended by air flotation blocks, and the acceleration of the reciprocating parts is measured and the motion equation is decoupled, thereby eliminating the influence of the inertia of the parts and other mechanical friction on the friction measurement of the workpiece, and improving the measurement accuracy.

[0014] 3. The present invention has a compact structure: the entire device is compactly designed, can effectively save space, and can be applied to various test environments.

[0015] 4. The present invention is easy to operate: the device allows the operator to change the friction stroke through simple control, thereby improving the experimental efficiency.

[0016] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the loading mechanism in the present invention.

[0019] Figure 3 It is a structural schematic diagram of the reciprocating motion mechanism in the present invention.

[0020] Description of reference numerals:

[0021] 1—Tube type resistance heating furnace; 2—Loading mechanism; 3—Insulation board limit frame;

[0022] 4—reciprocating mechanism; 5—frame; 2-1—air-floating guide rail;

[0023] 2-2—Linear bearing; 2-3—Screw rod module; 2-4—Servo motor;

[0024] 2-5—second stress-strain sensor; 2-6—fixed seat; 4-1—heat insulation board;

[0025] 4-2—friction rod; 4-3—second air flotation block; 4-4—connecting arm;

[0026] 4-5—Counterweight block; 4-6—First air floating block; 4-7—Acceleration sensor;

[0027] 4-8—first stress strain sensor; 4-9—support seat; 4-10—synchronous belt module;

[0028] 4-11—Guide rod. DETAILED DESCRIPTION

[0029] like Figures 1 to 3 As shown, the present invention includes a frame 5, a reciprocating motion mechanism 4, a tubular resistance heating furnace 1 and a loading mechanism 2 on the frame 5, wherein the reciprocating motion mechanism 4 is used to provide the linear reciprocating motion required for the friction motion, the loading mechanism 2 is used to provide the vertical load required for the friction motion, and the tubular resistance heating furnace 1 is used to maintain the test temperature of the friction and wear test workpiece.

[0030] In this embodiment, the reciprocating motion mechanism 4 includes a support seat 4-9, a synchronous belt module 4-10, a connecting arm 4-4 and a friction rod 4-2. The support seat 4-9 is fixedly mounted on the frame 5. The synchronous belt module 4-10 is fixedly mounted on the support seat 4-9. The slider of the synchronous belt module 4-10 is connected to the friction rod 4-2 through the connecting arm 4-4. The friction rod 4-2 extends into the tubular resistance heating furnace 1 and contacts the top surface of the test workpiece.

[0031] In this embodiment, the slider of the synchronous belt module 4-10 is connected to the connecting arm 4-4 through the first air floating block 4-6, and the slider of the synchronous belt module 4-10 is also connected to the connecting arm through the first stress strain sensor 4-8, and the connecting arm 4-4 is provided with an acceleration sensor 4-7.

[0032] In this embodiment, the slider of the synchronous belt module 4-10 is connected to the insulation plate 4-1 through the guide rod 4-11, and the top surface of the tubular resistance heating furnace 1 is provided with a through groove for the reciprocating movement of the friction rod 4-2. The insulation plate 4-1 slides and covers the through groove. The friction rod 4-2 vertically passes through the insulation plate 4-1. The insulation plate 4-1 moves synchronously with the friction rod 4-2. The connecting arm 4-4 is provided with a second air flotation block 4-3 connected to the loading mechanism 2, and a counterweight block 4-5 is provided at the end position of the connecting arm 4-4 away from the friction rod 4-2.

[0033] In this embodiment, the loading mechanism 2 includes a fixed seat 2-6, a screw module 2-3, a servo motor 2-4 and an air-floating guide rail 2-1. The fixed seat 2-6 is fixedly installed on the frame 5, the screw module 2-3 is fixedly installed on the fixed seat 2-6, and a moving seat is installed on the screw of the screw module 2-3. The moving seat is slidably connected to the fixed seat 2-6, and the moving seat is fixedly connected to the air-floating guide rail 2-1 through a guide rod. A linear bearing 2-2 is provided on the guide rod, and the linear bearing 2-2 is fixedly installed on the fixed seat 2-6. The air-floating guide rail 2-1 is adaptively connected to the second air-floating block 4-3, and the servo motor 2-4 is fixedly installed on the fixed seat 2-6. The output shaft of the servo motor 2-4 is connected to the screw of the screw module 2-3.

[0034] In this embodiment, a second stress strain sensor 2-5 is arranged between the air floating guide rail 2-1 and the screw module 2-3, and a spring is arranged between the second stress strain sensor 2-5 and the screw module 2-3 to ensure that the displacement distance of the screw module 2-3 is increased when a load is applied, thereby improving data accuracy.

[0035] In this embodiment, a heat insulation board limiting frame 3 is fixedly mounted on the frame 5, and a slide groove that slidably cooperates with the heat insulation board 4-1 is provided on the heat insulation board limiting frame 3.

[0036] When in use, first fix the test workpiece in the tubular resistance heating furnace 1, turn on the tubular resistance heating furnace 1 to heat it to the specified test temperature, turn on the servo motor 2-4 to apply a preset vertical load to the test workpiece through the air floatation guide rail 2-1, turn on the synchronous belt module 10 to drive the friction rod 2 to perform linear reciprocating motion on the test workpiece, monitor the vertical load and horizontal load through two stress strain sensors, and measure the acceleration of the reciprocating motion through the acceleration sensor, and solve the friction force through the acceleration and horizontal load.

[0037] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent change made to the above embodiment according to the technical essence of the invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A linear variable stroke reciprocating high temperature friction and wear testing machine, characterized in that: The invention comprises a frame (5), a reciprocating motion mechanism (4) on the frame (5), a tubular resistance heating furnace (1) and a loading mechanism (2), wherein the reciprocating motion mechanism (4) is used to provide the linear reciprocating motion required for the friction motion, the loading mechanism (2) is used to provide the vertical load required for the friction motion, and the tubular resistance heating furnace (1) is used to maintain the test temperature of the friction and wear test workpiece.

2. A linear variable stroke reciprocating high temperature friction and wear testing machine according to claim 1, characterized in that: The reciprocating motion mechanism (4) comprises a support seat (4-9), a synchronous belt module (4-10), a connecting arm (4-4) and a friction rod (4-2); the support seat (4-9) is fixedly mounted on a frame (5); the synchronous belt module (4-10) is fixedly mounted on the support seat (4-9); a slider of the synchronous belt module (4-10) is connected to the friction rod (4-2) via the connecting arm (4-4); and the friction rod (4-2) extends into the tubular resistance heating furnace (1) and contacts the top surface of the test workpiece.

3. A linear variable stroke reciprocating high temperature friction and wear testing machine according to claim 2, characterized in that: The slider of the synchronous belt module (4-10) is connected to the connecting arm (4-4) via a first air floating block (4-6), the slider of the synchronous belt module (4-10) is also connected to the connecting arm via a first stress strain sensor (4-8), and the connecting arm (4-4) is provided with an acceleration sensor (4-7).

4. A linear variable stroke reciprocating high temperature friction and wear testing machine according to claim 2, characterized in that: The slider of the synchronous belt module (4-10) is connected to the heat insulation plate (4-1) through a guide rod (4-11); the top surface of the tubular resistance heating furnace (1) is provided with a through groove for the friction rod (4-2) to reciprocate; the heat insulation plate (4-1) slides and covers the through groove; the friction rod (4-2) vertically passes through the heat insulation plate (4-1); the connecting arm (4-4) is provided with a second air flotation block (4-3) connected to the loading mechanism (2); and a counterweight block (4-5) is provided at an end position of the connecting arm (4-4) away from the friction rod (4-2).

5. A linear variable stroke reciprocating high temperature friction and wear testing machine according to claim 4, characterized in that: The loading mechanism (2) comprises a fixed seat (2-6), a screw module (2-3), a servo motor (2-4) and an air-floating guide rail (2-1); the fixed seat (2-6) is fixedly mounted on a frame (5); the screw module (2-3) is fixedly mounted on the fixed seat (2-6); a movable seat is mounted on the screw of the screw module (2-3); the movable seat is slidably connected to the fixed seat (2-6); the movable seat is fixedly connected to the air-floating guide rail (2-1) via a guide rod; a linear bearing (2-2) is arranged on the guide rod; the linear bearing (2-2) is fixedly mounted on the fixed seat (2-6); the air-floating guide rail (2-1) is adaptively connected to the second air-floating block (4-3); the servo motor (2-4) is fixedly mounted on the fixed seat (2-6); and the output shaft of the servo motor (2-4) is connected to the screw of the screw module (2-3).

6. A linear variable stroke reciprocating high temperature friction and wear testing machine according to claim 5, characterized in that: A second stress-strain sensor (2-5) is arranged between the air-floating guide rail (2-1) and the screw module (2-3), and a spring is arranged between the second stress-strain sensor (2-5) and the screw module (2-3).

7. The linear variable stroke reciprocating high temperature friction and wear testing machine according to claim 4, characterized in that: A heat insulation board limiting frame (3) is fixedly mounted on the frame (5), and a slide groove that slidably cooperates with the heat insulation board (4-1) is provided on the heat insulation board limiting frame (3).

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