Pin disc friction testing machine

Abstract

The utility model relates to a pin disc friction testing machine. A pressure adjusting mechanism is arranged on the front side of a machine body, a positioning device is arranged at the top of a table top, a power device is arranged at the bottom of the table top, and a controller is arranged on the right side of the machine body; the pressure adjusting mechanism comprises an electric telescopic rod, the electric telescopic rod is fixedly installed on the inner top wall of the machine body, a movable plate slidably connected with the inner wall of the machine body is fixedly installed at the telescopic end of the electric telescopic rod, and a connecting plate is fixedly installed on the front side of the movable plate. According to the pin disc friction testing machine, the height of the pin can be automatically adjusted by arranging the pressure adjusting mechanism and utilizing stretching and retracting of the electric telescopic rod, so that the pressure applied to a sample is accurately controlled, meanwhile, the pressure value can be monitored in real time and automatically adjusted by combining the use of the first pressure sensor and the controller, and the test efficiency is improved. Compared with a traditional mode of increasing or reducing weights, the labor intensity is greatly reduced, and the test efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of friction test, concretely to a pin disc friction test machine. BACKGROUND

[0002] The friction and wear testing machine is a necessary simulation evaluation test device for developing various high-grade series of hydraulic oil, internal combustion engine oil and gear machine oil.

[0003] Through the search, for example, the utility model discloses a light pin disc ball disc friction and wear testing machine in Chinese patent announcement No. CN212255026U, including the frame and the lower sample disc rotationally arranged above the frame, the upper test fixture of cooperation is arranged above the lower sample disc, the upper test fixture is fixed on the test shaft, the test shaft penetrates the fixed frame, the top of the test shaft is provided with a first weight tray, the balance spring is arranged between the first weight tray and the fixed frame, the fixed frame is provided with a lever frame on one side, the lever frame is connected with a lever, the lever is provided with a second weight tray on the end away from the lever frame, and the lever is arranged above the first weight tray;The utility model has the advantages of simple structure, convenient processing and remarkable test effect, and is suitable for large-scale popularization and use.

[0004] In the process of adjusting the friction pressure, the utility model patent relies on the mode of increasing or reducing the weight to realize, and this mode not only is cumbersome to operate, needs the test personnel to repeatedly take and place the weight, thereby increase the labor intensity, and the frequent adjustment of the weight also influences the test efficiency, therefore, a pin disc friction test machine is proposed. UTILITY MODEL CONTENTS

[0005] In view of the defects of the prior art, the utility model provides a pin disc friction test machine, which has the advantages of automatic adjustment of friction pressure, and solves the problems of increasing or reducing the weight, which increases the labor intensity and influences the test efficiency.

[0006] To achieve the above object, the utility model provides the following technical scheme: a pin disc friction test machine, comprising a machine body and a table top, the front side of the machine body is provided with a pressure adjusting mechanism, the top of the table top is provided with a positioning device, the bottom of the table top is provided with a power device, and the right side of the machine body is provided with a controller.

[0007] The pressure adjusting mechanism comprises an electric telescopic rod, the inner top wall of the machine body is fixedly installed with an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly installed with a moving plate in sliding connection with the inner wall of the machine body, the front side of the moving plate is fixedly installed with a connecting plate, the bottom of the connecting plate is provided with a pin, and the pin is provided with a pressure sensor one.

[0008] Further, the positioning device comprises a rotating disc, the top of the table top is rotatably installed with a rotating disc, a motor one is fixedly installed on the inner bottom wall of the rotating disc, and a circular block is fixedly installed at the output shaft of the motor one.

[0009] Further, three sliding grooves are formed in the rotating disc, a connecting rod is hingedly connected between each of the three sliding grooves and the circular block, and a positioning plate extending to the top of the rotating disc is slidably installed in each of the three sliding grooves.

[0010] Further, a spring is fixedly installed between the inner wall of each of the three sliding grooves and the positioning plate, and a pressure sensor two is arranged on one of the positioning plates.

[0011] Further, the top of the rotating disc is provided with a thermocouple and a metal film.

[0012] Further, the power device comprises a supporting plate, the bottom of the table top is fixedly installed with a supporting plate, a motor two is fixedly installed on the supporting plate, and a gear one is fixedly installed at the output shaft of the motor two.

[0013] Further, the outer surface of the gear one is engaged with a gear two, the bottom of the positioning device is fixedly installed with a rotating rod rotatably connected with the supporting plate, and the gear two is fixedly installed on the outer surface of the rotating rod.

[0014] Compared with the prior art, the technical scheme has the following beneficial effects:

[0015] 1. The pin-on-disc friction testing machine automatically adjusts the height of the pin through the pressure adjusting mechanism, realizes accurate control of the pressure applied to the sample by the extension and retraction of the electric telescopic rod, and realizes real-time monitoring and automatic adjustment of the pressure value by combining the use of the pressure sensor one and the controller, thereby greatly reducing the labor intensity and improving the test efficiency compared with the traditional method of increasing or decreasing the weight.

[0016] 2. The pin-on-disc friction testing machine can monitor the temperature of the sample and the pin in real time by the cooperation of the thermocouple and the metal film, thereby providing an important reference for the analysis of test data.

[0017] 3. The pin-on-disc friction testing machine realizes stable clamping of the sample by the positioning device, and the clamping method is stable and reliable, the clamping range is adjustable, different sizes of samples can be clamped, and the smooth progress of the test is ensured. DETAILED DESCRIPTION

[0018] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0019] Figure 2 It is a structure schematic view of the thermocouple and the metal film of the utility model;

[0020] Figure 3 It is the overhead sectional view of the rotating disc of the utility model;

[0021] Figure 4 It is the structure schematic view of the power device of the utility model;

[0022] Figure 5 It is the structure schematic view of the pressure regulating mechanism of the utility model.

[0023] In the drawing: 1, machine body; 2, pressure regulating mechanism; 201, electric telescopic rod; 202, moving plate; 203, connecting plate; 204, pin; 205, pressure sensor one; 3, table top; 4, positioning device; 401, rotating disc; 402, motor one; 403, round block; 404, sliding groove; 405, positioning plate; 406, connecting rod; 407, spring; 41, thermocouple; 42, metal film; 5, power device; 501, support plate; 502, motor two; 503, gear one; 504, gear two; 505, rotating rod; 6, controller. 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, not 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 protection scope of the utility model.

[0025] Please refer to Figures 1-5 A pin disc friction testing machine in the embodiment comprises a machine body 1 and a table top 3, the front side of the machine body 1 is provided with a pressure regulating mechanism 2, the top of the table top 3 is provided with a positioning device 4, the bottom of the table top 3 is provided with a power device 5, and the right side of the machine body 1 is provided with a controller 6.

[0026] The sample is clamped and fixed on the positioning device 4, then the height of the pin 204 is adjusted through the telescopic adjustment of the electric telescopic rod 201 in the pressure regulating mechanism 2, so that the pin 204 contacts the sample and exerts a certain pressure, and the motor two 502 in the power device 5 drives the positioning device 4 to drive the sample to rotate, so that the friction force is generated between the pin 204, and the automatic adjustment and control of the friction pressure are realized through the cooperation of the pressure sensor one 205 in the pressure regulating mechanism 2 and the controller 6.

[0027] The pressure adjusting mechanism 2 comprises an electric telescopic rod 201, the electric telescopic rod 201 is fixedly installed on the inner top wall of the body 1, the telescopic end of the electric telescopic rod 201 is fixedly installed with a moving plate 202 which is in sliding connection with the inner wall of the body 1, the front side of the moving plate 202 is fixedly installed with a connecting plate 203, the bottom of the connecting plate 203 is provided with a pin 204, and the pin 204 is provided with a pressure sensor one 205.

[0028] When the pin 204 tests the sample, the pressure sensor one 205 can continuously detect the pressure of the pin 204, convert it into an electric signal, and transmit it to the controller 6, the controller 6 is preset with a pressure value, compares the received actual pressure value with the preset value, if the actual pressure value is lower or higher than the preset value, the controller 6 sends an instruction to the pressure adjusting mechanism 2 to adjust the telescopic degree of the electric telescopic rod 201, so as to change the pressure of the pin 204 on the sample, and the test structure with different pressure sizes will be displayed on the controller 6.

[0029] By arranging the thermocouple 41 and the metal film 42 on the positioning device 4, the metal film 42 serves as a good heat conductor to transfer the heat between the sample and the thermocouple 41, so as to facilitate the measurement of the temperature of the contact surface.

[0030] The positioning device 4 comprises a rotating disc 401, a motor one 402, a circular block 403, a sliding groove 404, a positioning plate 405, a connecting rod 406 and a spring 407, by rotating the circular block 403 and rotating the connecting rod 406, when the motor one 402 operates, the positioning plate 405 can be driven to move in the sliding groove 404 to the center of the rotating disc 401, so as to realize the clamping and fixing of the sample.

[0031] The power device 5 comprises a supporting plate 501, a motor two 502, a gear one 503, a gear two 504 and a rotating rod 505, by engaging the gear one 503 with the gear two 504, the rotating rod 505 is driven to rotate, so as to drive the positioning device 4 and the sample to rotate.

[0032] In the implementation, the following steps are performed:

[0033] 1) first, the sample is placed on the rotating disc 401 and contacts with the metal film 42, the motor one 402 is started, the motor one 402 drives the circular block 403 to rotate, the circular block 403 drives the three connecting rods 406 to rotate, the three connecting rods 406 drive the three positioning plates 405 to slide in the three sliding grooves 404, and the sample is clamped between the three positioning plates 405, the clamping force is monitored by the pressure sensor on the positioning plate 405, after the appropriate clamping force is reached, the motor one 402 is stopped;

[0034] 2) Then start the motor 502 in the power device 5, through the meshing of gear 1 503 and gear 2 504, drive the rotating rod 505 and the rotating disc 401 to rotate, so as to generate friction force between the sample and the pin 204;

[0035] 3) Through the controller 6 to preset the required friction pressure value, start the electric telescopic rod 201 in the pressure adjusting mechanism 2, adjust the height of the pin 204, so that it contacts with the sample and applies the preset pressure, at the same time, the pressure sensor 1 205 will monitor the pressure of the pin 204 on the sample in real time, and feedback the data to the controller 6;

[0036] 4) Finally, in the test process, the thermocouple 41 will measure the temperature of the sample and the pin 204 in real time through the metal film 42, and transmit the data to the controller 6 for processing and analysis, the controller 6 records and displays the pressure and temperature in the test process, so as to subsequent data analysis and evaluation.

[0037] In summary, the pin and disc friction tester, by setting the pressure adjusting mechanism 2, using the telescopic electric telescopic rod 201, can automatically adjust the height of the pin 204, so as to realize the accurate control of the pressure applied to the sample, at the same time, combined with the use of pressure sensor 1 205 and controller 6, can monitor and automatically adjust the pressure value in real time, compared with the traditional way of increasing or reducing the weight, greatly reduces the labor intensity and improves the test efficiency.

[0038] Further, through the cooperation of thermocouple 41 and metal film 42, the temperature of the sample and the pin 204 can be measured in real time, which provides an important reference for the analysis of test data.

[0039] Moreover, by setting the positioning device 4, the sample can be stably clamped, and the clamping method is stable and reliable, and the clamping range is adjustable, which can adapt to samples of different sizes and ensure the smooth progress of the test.

[0040] It should be noted that in this paper, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitation, the element defined by the statement "including a" does not exclude the existence of other identical elements in the process, method, article or equipment including the element.

[0041] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pin-disc friction testing machine, comprising a machine body (1) and a table (3), characterized in that: A pressure regulating mechanism (2) is provided on the front side of the body (1), a positioning device (4) is provided on the top of the table (3), a power device (5) is provided on the bottom of the table (3), and a controller (6) is provided on the right side of the body (1). The pressure regulating mechanism (2) includes an electric telescopic rod (201). The electric telescopic rod (201) is fixedly installed on the inner top wall of the body (1). The telescopic end of the electric telescopic rod (201) is fixedly installed with a movable plate (202) that is slidably connected to the inner wall of the body (1). A connecting plate (203) is fixedly installed on the front side of the movable plate (202). A pin (204) is provided at the bottom of the connecting plate (203). A pressure sensor (205) is provided on the pin (204).

2. The pin-disc friction testing machine according to claim 1, characterized in that: The positioning device (4) includes a turntable (401), the turntable (401) is rotatably mounted on the top of the table (3), a motor (402) is fixedly mounted on the inner bottom wall of the turntable (401), and a round block (403) is fixedly mounted at the output shaft of the motor (402).

3. The pin-disc friction testing machine according to claim 2, characterized in that: The turntable (401) has three grooves (404) inside. Each of the three grooves (404) is hinged to a connecting rod (406) with a circular block (403). Each of the three grooves (404) has a positioning plate (405) that extends to the top of the turntable (401) and is slidably installed inside.

4. The pin-disc friction testing machine according to claim 3, characterized in that: Springs (407) are fixedly installed between the inner walls of the three slides (404) and the positioning plates (405), and a pressure sensor is provided on one of the positioning plates (405).

5. A pin-disc friction testing machine according to claim 2, characterized in that: The top of the turntable (401) is provided with a thermocouple (41) and a metal film (42).

6. The pin-disc friction testing machine according to claim 1, characterized in that: The power unit (5) includes a support plate (501). The support plate (501) is fixedly installed on the bottom of the platform (3). A second motor (502) is fixedly installed on the support plate (501). A first gear (503) is fixedly installed at the output shaft of the second motor (502).

7. A pin-disc friction testing machine according to claim 6, characterized in that: Gear 2 (504) meshes with the outer surface of gear 1 (503). A rotating rod (505) that is rotatably connected to the support plate (501) is fixedly installed at the bottom of the positioning device (4). Gear 2 (504) is fixedly installed on the outer surface of the rotating rod (505).

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