Microcomputer-controlled four-ball friction testing machine

Abstract

The utility model belongs to the technical field of four-ball friction testing, and provides a microcomputer-controlled four-ball friction testing machine which comprises a base plate, an active friction structure is arranged at the top of the base plate, passive friction structures are arranged at the top of the base plate and located at the bottom of the active friction structure, and an oil immersion structure is arranged between the passive friction structures. The oil immersion structure comprises a guide sliding plate fixed to the top of the base plate, a sliding block is slidably arranged at the top of the guide sliding plate, an oil immersion barrel is arranged at one end of the top of the sliding block, and a positioning block is arranged at the end, away from the passive friction structure, of the top of the oil immersion barrel. The active friction structure comprises a connecting plate arranged at the rear end of the top of the base plate, a motor is arranged at the top of the connecting plate, and the bottom end of the motor penetrates through the connecting plate and is inserted with a telescopic rod. The problem that the existing equipment controls an oil box to be close to a grinding assembly through a lever structure, and due to the fact that the motion trail of the lever behavior is arc-shaped, the oil box inclines and leaks oil to pollute the equipment in the upward moving behavior is solved.

Description

Technical Field

[0001] This utility model relates to the field of four-ball friction testing, and in particular to a microcomputer-controlled four-ball friction testing machine. Background Technology

[0002] A four-ball friction testing machine is an experimental device used to evaluate the frictional properties and lubrication characteristics of materials. It uses four spheres to simulate the contact between friction surfaces to evaluate the performance of materials under different operating conditions.

[0003] A search revealed a novel four-ball friction testing machine for lubricants, disclosed in patent publication number CN219532875U. Its structure includes a lever assembly, a piston platform, a grinding assembly, an operating host, and a machine base. The lever assembly is connected to the machine base via a transition fit with the piston platform. The machine base and the operating host are electrically connected. The piston platform and the grinding assembly are fitted with a clearance fit. An assisting element is provided inside the oil box. The assisting element and a receiving seat cooperate within the oil box. When the oil box rises along with the lifting platform via the lever assembly, due to gravity and inertia, the pointing element inside the oil box slides in the opposite direction on the guide rail. This causes the pointing element to gradually engage with the running-in groove and anti-slip protrusions, tilting and supporting the center of the oil box. This progressively reduces and disperses the pressure on the internal parts, improving the flexibility of the interaction between the oil box and the grinding assembly, and ensuring the accuracy of the test data.

[0004] The existing equipment uses a lever structure to control the oil box to approach the grinding component. Since the movement trajectory of the lever is arc-shaped, tilting and oil leakage may occur during the upward movement of the oil box, resulting in equipment contamination and oil loss.

[0005] Therefore, it is necessary to provide a microcomputer-controlled four-ball friction testing machine to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a microcomputer-controlled four-ball friction testing machine.

[0007] The microcomputer-controlled four-ball friction testing machine provided by this utility model includes a base plate, an active friction structure is provided on the top of the base plate, a passive friction structure is provided on the top of the base plate and at the bottom of the active friction structure, and an oil immersion structure is provided between the passive friction structures.

[0008] The oil immersion structure includes a guide slide plate fixed to the top of the base plate, a sliding block slidably disposed on the top of the guide slide plate, an oil immersion tank disposed at one end of the top of the sliding block, a positioning block disposed at the top of the oil immersion tank and at the end away from the passive friction structure, and the oil immersion tank is a tank with an open top.

[0009] To achieve stable support for the motor, the microcomputer-controlled four-ball friction testing machine provided by this utility model preferably includes a connecting plate disposed at the rear end of the top of the base plate, a motor disposed at the top of the connecting plate, and a telescopic rod inserted through the connecting plate at the bottom end of the motor.

[0010] In order to achieve the effect of vertical displacement, as provided by this utility model, a microcomputer-controlled four-ball friction testing machine is preferably provided with a top ball mounting seat fixed at the bottom end of the telescopic rod. The bottom end of the top ball mounting seat is fitted with a top ball fixing support sleeve through a threaded connection. The bottom end of the top ball extends through a through hole opened at the bottom end of the top ball fixing support sleeve.

[0011] To achieve the effect of four-ball friction behavior, the microcomputer-controlled four-ball friction testing machine provided by this utility model preferably includes two upright plates set on the top of the base plate. The two upright plates are respectively set on both sides of the guide slide plate. Each of the two upright plates has a groove inside. Each of the two grooves has a slider slidably set inside by a spring. The same three-ball mounting cylinder is set between the two sliders.

[0012] To achieve the effect of immersing three balls in oil, the microcomputer-controlled four-ball friction testing machine provided by this utility model preferably has several through holes evenly opened at the bottom end of the three-ball mounting cylinder, three balls evenly arranged inside the three-ball mounting cylinder, and the outer diameter of the three-ball mounting cylinder is smaller than the inner diameter of the oil immersion tank.

[0013] To achieve intelligent control, the present invention provides a microcomputer-controlled four-ball friction testing machine. Preferably, a control microcomputer is provided on the front of the base plate, the control microcomputer is electrically connected to the motor, and the control microcomputer is electrically connected to the telescopic rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This microcomputer-controlled four-ball friction testing machine uses a sliding oil immersion tank to soak three balls. This solves the problem of existing equipment using a lever structure to control the oil box to approach the grinding component. Because the movement trajectory of the lever is arc-shaped, tilting and oil leakage will occur during the upward movement of the oil box, resulting in equipment contamination and oil loss. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the microcomputer-controlled four-ball friction testing machine provided by this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the active friction structure shown.

[0018] Figure 3 for Figure 1 The diagram shows the structure of the passive friction structure.

[0019] Figure 4 for Figure 1 The diagram shows the structure of the oil-immersed structure.

[0020] The diagram is labeled as follows: 1. Base plate; 2. Active friction structure; 201. Connecting plate; 202. Motor; 203. Telescopic rod; 204. Top ball mounting seat; 205. Top ball fixing support sleeve; 206. Through hole; 3. Passive friction structure; 301. Vertical plate; 302. Slide groove; 303. Spring; 304. Slider; 305. Three-ball mounting cylinder; 4. Oil immersion structure; 401. Guide slide plate; 402. Sliding block; 403. Oil immersion tank; 404. Positioning block; 5. Control microcomputer. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 A schematic diagram of a preferred embodiment of the microcomputer-controlled four-ball friction testing machine provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the active friction structure shown. Figure 3 for Figure 1 The diagram shows the structure of the passive friction structure. Figure 4 for Figure 1 The schematic diagram of the oil-immersion structure shown includes a microcomputer-controlled four-ball friction testing machine, including a base plate 1, an active friction structure 2 on the top of the base plate 1, a passive friction structure 3 on the top of the base plate 1 and located at the bottom of the active friction structure 2, and an oil-immersion structure 4 between the passive friction structures 3.

[0023] The oil immersion structure 4 includes a guide slide plate 401 fixed to the top of the base plate 1. A sliding block 402 is slidably arranged on the top of the guide slide plate 401. An oil immersion tank 403 is arranged at one end of the top of the sliding block 402. A positioning block 404 is arranged at the top of the oil immersion tank 403 and at the end away from the passive friction structure 3. The oil immersion tank 403 is a tank with an open top.

[0024] It should be noted that the sliding block 402 slides on the top of the guide slide plate 401 until the positioning block 404 contacts the three-ball mounting cylinder 305, so that the three-ball mounting cylinder 305 and the oil immersion tank 403 are placed coaxially. Then the three-ball mounting cylinder 305 falls, so that the oil inside the oil immersion tank 403 surrounds the three balls inside the three-ball mounting cylinder 305.

[0025] In the specific implementation process, refer to Figure 1 and Figure 2 As shown, the active friction structure 2 includes a connecting plate 201 located at the top rear end of the base plate 1. A motor 202 is located at the top of the connecting plate 201. A telescopic rod 203 is inserted through the connecting plate 201 at the bottom end of the motor 202. A ball mounting seat 204 is fixedly located at the bottom end of the telescopic rod 203. A ball is mounted on the ball mounting seat 204 at the bottom end via a threaded ball fixing support sleeve 205. The bottom end of the ball extends through a through hole 206 opened at the bottom end of the ball fixing support sleeve 205.

[0026] It should be noted that the connecting plate 201 stably supports the motor 202, ensuring that the motor 202 can stably output rotational power. Subsequently, the high-speed rotating telescopic rod 203 extends and retracts, causing the top ball inside the top ball mounting seat 204 to move up and down. The top ball mounting seat 204 and the top ball fixing support sleeve 205 are connected by threads to fix the top ball.

[0027] In the specific implementation process, refer to Figure 1 and Figure 3 As shown, the passive friction structure 3 includes two upright plates 301 set on the top of the base plate 1. The two upright plates 301 are respectively set on both sides of the guide slide plate 401. Each of the two upright plates 301 has a groove 302 inside. Each of the two grooves 302 has a slider 304 slidably set inside by a spring 303. A three-ball mounting cylinder 305 is set between the two sliders 304. Several through holes are evenly opened at the bottom end of the three-ball mounting cylinder 305. Three balls are evenly arranged inside the three-ball mounting cylinder 305. The outer diameter of the three-ball mounting cylinder 305 is smaller than the inner diameter of the oil immersion tank 403.

[0028] It should be noted that: when the three-ball mounting cylinder 305 is subjected to the downward pressure of the telescopic rod 203, the two sliders 304 will slide along the slide groove 302 and compress the two corresponding springs 303. Then, the displacement sliding block 402 supports the three-ball mounting cylinder 305 to facilitate the friction test without oil. Finally, the oil inside the oil tank 403 surrounds the three balls inside the three-ball mounting cylinder 305 to conduct the friction test with oil.

[0029] In the specific implementation process, refer to Figure 1 and Figure 2As shown, a control microcomputer 5 is provided on the front of the base plate 1. The control microcomputer 5 is electrically connected to the motor 202 and the telescopic rod 203.

[0030] It should be noted that: the control microcomputer 5 transmits control signals to the motor 202, which intelligently controls the motor 202 to generate rotational force, and the control microcomputer 5 transmits control signals to the telescopic rod 203, which intelligently controls the telescopic rod 203 to perform telescopic behavior.

[0031] The working principle of the microcomputer-controlled four-ball friction testing machine provided by this utility model is as follows:

[0032] In use, the top ball mounting seat 204 and the top ball fixing support sleeve 205 are connected by threads to fix the top ball, and three balls are evenly placed inside the three-ball mounting cylinder 305. Then, the displacement sliding block 402 supports the three-ball mounting cylinder 305 to facilitate oil-free friction tests. The telescopic rod 203 extends to bring the top ball at the bottom of the top ball mounting seat 204 into contact with the three balls inside the three-ball mounting cylinder 305. The motor 202 controls the telescopic rod 203 and the top ball to rotate, conducting oil-free friction tests. Afterward, the three balls inside the three-ball mounting cylinder 305 and the top ball inside the top ball mounting seat 204 are replaced. The sliding block 402 is guided by the slide plate 4. 01 The top slides until the positioning block 404 contacts the three-ball mounting cylinder 305, so that the three-ball mounting cylinder 305 and the oil immersion tank 403 are placed coaxially. Then, the three-ball mounting cylinder 305 falls with the help of two sliders 304 and the sliding groove 302, so that the oil inside the oil immersion tank 403 surrounds the three balls inside the three-ball mounting cylinder 305. The telescopic rod 203 extends to bring the top ball at the bottom of the top ball mounting seat 204 into contact with the three balls inside the three-ball mounting cylinder 305. The motor 202 controls the telescopic rod 203 and the top ball to rotate to conduct a friction test with oil. Finally, the two sets of balls are compared to obtain the wear resistance performance of the oil.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A microcomputer-controlled four-ball friction testing machine, comprising a base plate (1), characterized in that, An active friction structure (2) is provided on the top of the base plate (1), a passive friction structure (3) is provided on the top of the base plate (1) and at the bottom of the active friction structure (2), and an oil-immersed structure (4) is provided between the passive friction structures (3). The oil immersion structure (4) includes a guide slide plate (401) fixed to the top of the base plate (1). A sliding block (402) is slidably provided on the top of the guide slide plate (401). An oil immersion tank (403) is provided at one end of the top of the sliding block (402). A positioning block (404) is provided at the top of the oil immersion tank (403) and at one end away from the passive friction structure (3). The oil immersion tank (403) is a tank with an open top.

2. The microcomputer-controlled four-ball friction testing machine according to claim 1, characterized in that, The active friction structure (2) includes a connecting plate (201) disposed at the top rear end of the base plate (1). A motor (202) is disposed at the top of the connecting plate (201), and a telescopic rod (203) is inserted through the connecting plate (201) at the bottom end of the motor (202).

3. The microcomputer-controlled four-ball friction testing machine according to claim 2, characterized in that, The bottom end of the telescopic rod (203) is fixedly provided with a top ball mounting seat (204). The bottom end of the top ball mounting seat (204) is provided with a top ball through a threaded top ball fixing support sleeve (205). The bottom end of the top ball extends through the through hole (206) opened at the bottom end of the top ball fixing support sleeve (205).

4. The microcomputer-controlled four-ball friction testing machine according to claim 1, characterized in that, The passive friction structure (3) includes two upright plates (301) disposed on the top of the base plate (1). The two upright plates (301) are respectively disposed on both sides of the guide slide plate (401). The two upright plates (301) are provided with a sliding groove (302) inside. The two sliding grooves (302) are slidably disposed with a slider (304) through a spring (303) inside. The two sliders (304) are provided with the same three-ball mounting cylinder (305) between them.

5. The microcomputer-controlled four-ball friction testing machine according to claim 4, characterized in that, The bottom end of the three-ball mounting cylinder (305) is evenly provided with several through holes, and three balls are evenly arranged inside the three-ball mounting cylinder (305). The outer diameter of the three-ball mounting cylinder (305) is smaller than the inner diameter of the oil immersion tank (403).

6. The microcomputer-controlled four-ball friction testing machine according to claim 1, characterized in that, The base plate (1) has a control microcomputer (5) on its front side. The control microcomputer (5) is electrically connected to the motor (202) and the telescopic rod (203).

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