Lever four-ball friction testing machine
By setting the tool bearing part in the lever four-ball friction test machine to connect the lever loading mechanism and setting the force boom connecting sensor on the outside of the oil box, the problem of lever end displacement and sensor feedback is solved, and more stable and accurate measurement of test parameters is achieved.
Patent Information
- Application Number
- CN202422206370.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-10
AI Technical Summary
In the existing lever four-ball friction test machine, the bearing seat support of the lever end and the oil-bearing box are prone to relative displacement, resulting in inaccurate test parameters, and inconvenient sensor feedback method and small force.
In the lever four-ball friction test machine, the knife bearing part is arranged to connect to the lever loading mechanism, and the precision friction sensor and the heavy-duty composite sensor are connected through the force boom to avoid contact position displacement, and a force boom is arranged circumferentially on the outside of the oil box for parameter feedback.
The stable connection of the sensor and accurate parameter feedback are achieved, the contact point misalignment is avoided, and the accuracy of the test results and the feedback effect of the sensor are improved.
Smart Images
Figure CN223122821U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of four-ball friction testers, and specifically relates to a lever four-ball friction tester. Background Art
[0002] The lever four-ball friction tester is mainly used to test various parameters of lubricants. By controlling the load at the end of the lever, it can pressurize the oil box, and drive the rotation through the servo motor of the servo test mechanism to perform various parameter tests. However, in the existing equipment, relative displacement is likely to occur between the end of the lever and the bearing seat supporting the oil box. The occurrence of this situation will lead to inaccurate test parameters. In addition, the feedback method of the existing sensor is relatively inconvenient, not only difficult to set, but also with a small feedback force. Content of the Utility Model
[0003] To solve the problems of partial defects existing in the existing tester, the utility model provides a lever four-ball friction tester.
[0004] The technical solution of the utility model is as follows:
[0005] A lever four-ball friction tester includes a workbench, on which a control terminal and a frame body are arranged. A servo test mechanism and a precision friction force measuring mechanism connected to the servo test mechanism are arranged on the frame body, and the lower end of the servo test mechanism is connected to a lever loading mechanism;
[0006] The servo test mechanism includes a servo motor arranged vertically downward. An oil box is arranged below the main shaft of the servo motor, and the oil box is placed above the bearing seat support below. And a knife bearing part is arranged at one end of the bearing seat support away from the oil box and is in contact connection with the lever of the lever loading mechanism;
[0007] The precision friction force measuring mechanism includes a force arm rod arranged on the side wall of the oil box, and a precision friction force sensor and a heavy-duty composite sensor are arranged on the force arm rod in its rotation plane and connected to the frame body.
[0008] By setting the force arm rod and connecting the precision friction force sensor and the heavy-duty composite sensor, it is convenient for connection, and at the same time, it can effectively perform parameter feedback. And setting the knife bearing part can avoid displacement at the contact position and is more stable.
[0009] As a preferred solution, an additional seat plate is arranged between the frame body and the workbench. Only the additional seat plate needs to be processed, which saves costs and does not require processing the entire surface of the workbench.
[0010] To avoid interference of the main shaft problem on the experimental results, an automatic lubricating pump is also arranged at the main shaft position of the frame body, and the frame body is integrally formed by XSMXF casting.
[0011] For the convenience of being applicable to different experimental environments, the oil box can be replaced and includes two specifications: a high-temperature oil box and a low-temperature oil box.
[0012] The specific structure of the above-mentioned lever loading mechanism is that the lever loading mechanism includes a lever penetrating the frame body, and the frame body is provided with a knife bearing seat at a position relative to the knife bearing part to support the lever. The knife bearing part prevents the lever from moving in the length direction, and the setting of the knife bearing seat can prevent the lever from moving in the direction perpendicular to its length, thereby ensuring the accuracy of the contact position.
[0013] For the convenience of use, a detachable locking rod is provided at one end of the lever close to the workbench and connected to the frame body. When the locking rod is provided, the oil box can be disassembled and assembled, and the lever does not need to be adjusted. Moreover, the above structure can also avoid the harm to the staff caused by the movement of the lever when operating the oil box.
[0014] The way to realize lever pressurization is that a weight is provided at one end of the lever far from the workbench, and a weight lifter is provided below the weight. The weight lifter can be selected to be automatic or manual.
[0015] The setting method of the above-mentioned knife bearing part and the lever is that the length direction of the knife bearing part is perpendicular to the rotation plane where the lever is located and perpendicular to the length direction of the lever.
[0016] As a preferred solution, the force arm rods are circumferentially spaced along the rotation axis of the oil box, and the end parts of the force arm rods are respectively rotatably connected to the detection ends of the precision friction sensor and the heavy-duty composite sensor. The extended setting of the force arm rods is convenient for setting sensors at more other positions, not limited to a fixed space, and can obtain sufficient feedback.
[0017] As a preferred solution, both the workbench and the additional seat plate are made of stainless steel, and a microscope and / or a processing fixture are further provided on the upper surface of the workbench. It has more functions.
[0018] The beneficial effects of the present invention are as follows: The present invention is a lever four-ball friction testing machine. Different from the existing equipment, a knife bearing part and a knife bearing seat are provided at the contact position between the lever and the bearing seat support, and the structural cooperation of the positions where displacement is likely to occur in conventional equipment is respectively restricted, thereby being able to avoid the phenomenon of misalignment of the contact points. Moreover, by setting the force arm rods circumferentially outside the oil box, the present device can break through the limitation of the setting position of the sensor around the oil box, and can then feedback at other positions and with a larger stroke, and the effect is better than that of the existing equipment. Description of the Drawings
[0019] The solutions and advantages of this application will become clear to those of ordinary skill in the art by reading the following detailed description of the preferred embodiments. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model.
[0020] In the drawings:
[0021] Figure 1 is a schematic structural diagram of the present utility model;
[0022] Figure 2 is a schematic structural diagram of the present utility model ( Figure 1 different perspectives);
[0023] Figure 3 is a schematic structural diagram of the present utility model (front view);
[0024] Figure 4 is a schematic diagram of the partial detailed structure of the present utility model;
[0025] Figure 5 is Figure 4 a schematic structural diagram of the rear view perspective;
[0026] The components represented by the reference numerals in the drawings are:
[0027] 1, workbench; 11, additional seat board; 12, microscope; 13, processing fixture; 2, control terminal; 3, frame body; 4, servo test mechanism; 41, servo motor; 42, main shaft; 43, oil box; 44, bearing seat support; 45, tool bearing part; 46, automatic lubrication pump; 5, precision friction measurement mechanism; 51, force arm rod; 52, precision friction sensor; 53, heavy composite sensor; 6, locking rod; 7, lever loading mechanism; 71, lever; 72, tool bearing seat; 8, weight; 9, weight hoist. Detailed implementation manners
[0028] Embodiment
[0029] As Figures 1-3 shown, a lever four-ball friction testing machine includes a workbench 1 placed on a reference plane. Circular support legs and universal wheels capable of adjusting the height are provided below the workbench 1. Under normal conditions, the universal wheels do not contact the reference plane, but are supported by the circular support legs. When the device needs to be moved, the circular support legs need to be rotated until they are lifted and then the universal wheels contact the reference plane. In this state, the above-mentioned workbench 1 can be freely moved.
[0030] After that, a control terminal 2 and a frame body 3 are provided on the workbench 1. It should be noted that the upper surface of the workbench 1 is a horizontal plane, and the workbench 1 is made of stainless steel. In addition to the above two structural components, a microscope 12 and / or a processing fixture 13 are also provided on the upper surface of the workbench 1 to have more functions. And the setting of the above structures needs to avoid mutual interference, such as Figure 3 As shown, it is sufficient to be able to perform normal operations.
[0031] In addition to the above structure, the design focus of this device is that a servo testing mechanism 4 and a precise friction force measuring mechanism 5 connected to the servo testing mechanism 4 are provided on the frame body 3. The lower end of the servo testing mechanism 4 is connected to a lever loading mechanism 7. The same as the existing structure, in the way of providing a load by the lever loading mechanism 7, the servo testing mechanism 4 is used for testing. And during this process, it is measured and recorded by the sensor of the precise friction force measuring mechanism 5.
[0032] Such as Figures 4-5 As shown, the servo testing mechanism 4 includes a servo motor 41 arranged vertically downward. Below the main shaft 42 of the servo motor 41, an oil box 43 is provided, and the oil box 43 is placed above a bearing seat support 44 below. And the above bearing seat support 44 is supported by the frame body 3. The frame body 3 is provided with a horizontal through channel at the position of the oil box 43, which is convenient for observing the oil box 43 and is also convenient for installation and disassembly. After that, one end of the bearing seat support 44 away from the oil box 43 is provided with a knife bearing part 45 which is in contact connection with the lever 71 of the lever loading mechanism 7. The cross section of the above knife bearing part 45 is an inverted trapezoid, and the lever 71 is provided with a groove at its corresponding position for cooperation. After the lever 71 is pressurized by a weight 8, the whole bearing seat support 44 can be pushed to move upward, and the oil box 43 can be tightly abutted against the main shaft. Under the rotation action of the main shaft 42, the oil box 43 can rotate on the bearing seat support 44, and the rotation axis coincides with the rotation axis of the main shaft 42.
[0033] It should be noted that, as Figure 3 、 4 As shown, the setting method of the above knife bearing part 45 and the lever 71 is that the length direction of the knife bearing part 45 is perpendicular to the rotation plane where the lever 71 is located and perpendicular to the length direction of the lever 71.
[0034] The purpose of choosing the above design is that, first of all, as Figure 1 、 2As shown, the specific structure of the above-mentioned lever loading mechanism 7 is that the lever loading mechanism 7 includes a lever 71 passing through the frame body 3, and a knife bearing seat 72 is provided at a position opposite to the knife bearing part 45 of the frame body 3 to support the lever 71. Among them, the above-mentioned knife bearing part 45 prevents the movement of the lever 71 in the length direction, and the setting of the knife bearing seat 72 can prevent the lever 71 from moving in the direction perpendicular to its length, thereby ensuring the accuracy of the contact position and ensuring that the lever 71 cannot move in both the horizontal and vertical directions, and thus enabling it to obtain a stable contact loading effect.
[0035] And the way to realize the pressurization of the lever 71 is that a weight 8 is provided at one end of the lever 71 away from the workbench 1, and a weight lifter 9 is provided below the weight 8. The weight lifter 9 can be selected to be automatic or manual. Through the above method, the load pressure of the lever 71 on the bearing seat support 44 can be changed, and thus the load can be increased or decreased linearly to carry out the test experiment normally.
[0036] Finally, on the basis of the above structure, further, the precision friction force measuring mechanism 5 includes a force arm rod 51 provided on the side wall of the oil box 43, and a precision friction force sensor 52 and a heavy composite sensor 53 are provided on the force arm rod 51 in its rotation plane and connected to the frame body 3.
[0037] As Figure 4 、 5 shown, the force arm rods 51 are circumferentially spaced along the rotation axis of the oil box 43, and the end parts of the force arm rods 51 are respectively rotatably connected to the detection ends of the precision friction force sensor 52 and the heavy composite sensor 53. Through the extended setting of the above-mentioned force arm rods 51, it is convenient to set sensors at more other positions, no longer limited to a fixed space, and sufficient feedback can be obtained. And the setting method of the two sensors makes the detection effect more accurate than the conventional method, and it can be seen from the above structure that after the force arm rods 51 are extended, the above-mentioned sensors can be set at the outer side position of the frame body 3, which is convenient for manual replacement and adjustment, etc.
[0038] Finally, through the above structure, it can be realized that by setting the force arm rod 51 and connecting the precision friction force sensor 52 and the heavy composite sensor 53, it is convenient for connection and can effectively carry out parameter feedback at the same time, and setting the knife bearing part 45 can prevent displacement at the contact position and is more stable.
[0039] As another implementation method, an additional seat plate 11 is provided between the frame body 3 and the workbench 1. Only the additional seat plate 11 needs to be processed separately, which saves costs and does not require processing the entire surface of the workbench 1. And in order to avoid the interference of the spindle 42 problem on the experimental results, an automatic lubricating pump 46 is also provided at the position of the spindle 42 on the frame body 3, and the frame body 3 is integrally formed by XSMXF casting.
[0040] In addition to the above structure, in order to be conveniently applicable to different experimental environments, the oil box 43 is replaceable and includes two specifications, namely a high-temperature oil box 43 and a low-temperature oil box 43.
[0041] As another implementation manner, in some cases, it is necessary to manually take and place the oil box. For the convenience of use, a detachable locking rod 6 is provided at one end of the lever 71 close to the workbench 1 and is connected to the frame body 3. When the locking rod 6 is provided, the oil box 43 can be disassembled and assembled, and the lever 71 does not need to be adjusted. Moreover, the above structure can also avoid the harm to the staff caused by the movement of the lever 71 when operating the oil box 43. That is to say, by fixing the end of the lever 71 far from the weight 8 through a rigid structure to make its position fixed, no matter how the weight 8 is increased or decreased, the above lever 71 will not move or rotate, so that the treatment of the oil box 43 can be conveniently carried out.
Claims
1. A lever four-ball friction testing machine, comprising a workbench (1), wherein a control terminal (2) and a frame body (3) are arranged on the workbench (1), and it is characterized in that, A servo testing mechanism (4) and a precision friction force measuring mechanism (5) connected to the servo testing mechanism (4) are provided on the frame body (3), and the lower end of the servo testing mechanism (4) is connected to a lever loading mechanism (7); The servo testing mechanism (4) includes a servo motor (41) arranged vertically downward. An oil box (43) is provided below the main shaft (42) of the servo motor (41), and the oil box (43) is placed above a bearing seat support (44) below. One end of the bearing seat support (44) away from the oil box (43) is provided with a knife bearing part (45) which is in contact connection with the lever (71) of the lever loading mechanism (7); The precision friction force measuring mechanism (5) includes a force arm rod (51) arranged on the side wall of the oil box (43), and a precision friction force sensor (52) and a heavy-duty composite sensor (53) are arranged on the force arm rod (51) in its rotation plane and connected to the frame body (3).
2. The four-ball friction testing machine with a lever according to claim 1, characterized in that, An additional seat plate (11) is provided between the frame body (3) and the workbench (1).
3. The four-ball friction testing machine with a lever according to claim 1, characterized in that, An automatic lubricating pump (46) is further provided at the position of the main shaft (42) on the frame body (3), and the frame body (3) is integrally formed by XSMXF casting.
4. The four-ball friction testing machine with a lever according to claim 1, characterized in that The oil box (43) can be replaced and includes two specifications: a high-temperature oil box (43) and a low-temperature oil box (43).
5. The four-ball friction testing machine with a lever according to claim 1, characterized in that, The lever loading mechanism (7) includes a lever (71) penetrating through the frame body (3), and a knife bearing seat (72) is provided on the frame body (3) at a position opposite to the knife bearing part (45) to support the lever (71).
6. The four-ball friction testing machine with a lever according to claim 5, characterized in that One end of the lever (71) close to the workbench (1) is provided with a detachable locking rod (6) connected to the frame body (3).
7. A four-ball friction testing machine with a lever according to claim 5, characterized in that, A weight (8) is provided at one end of the lever (71) away from the workbench (1), and a weight hoist (9) is provided below the weight (8).
8. A four-ball friction testing machine with a lever according to claim 1, characterized in that The length direction of the knife bearing part (45) is perpendicular to the rotation plane where the lever (71) is located and perpendicular to the length direction of the lever (71).
9. The four-ball friction testing machine with a lever according to claim 1, characterized in that, The force arm rods (51) are circumferentially spaced along the rotation axis of the oil box (43), and the end parts of the force arm rods (51) are respectively rotatably connected to the detection ends of the precision friction force sensor (52) and the heavy-duty composite sensor (53).
10. The four-ball friction testing machine with a lever according to claim 1, characterized in that, Both the workbench (1) and the additional seat plate (11) are made of stainless steel, and a microscope (12) and / or a processing fixture (13) are further provided on the upper surface of the workbench (1).