Device for improving accuracy of testing volume expansion amount of brake hose
By adding a displacement sensor to the brake hose measurement device, the problem of inaccurate piston displacement control in traditional equipment is solved, and higher measurement accuracy and test consistency are achieved.
Patent Information
- Application Number
- CN202422309895.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-09-23
AI Technical Summary
Traditional brake hose volume expansion measurement equipment cannot accurately control the piston displacement, resulting in poor consistency of repeated tests.
The displacement sensor is added to the brake hose measurement device to monitor the piston displacement of the piston cylinder and transfer data to the computer control center for processing to more accurately control the displacement distance of the servo motor.
Improves the accuracy of brake hose volume expansion measurement and the consistency of repeated tests.
Smart Images
Figure CN223228981U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of brake systems, in particular to a device for improving the accuracy of testing the volume expansion of a brake hose. Background Art
[0002] Traditional volume expansion measurement equipment uses a servo motor to output a displacement value and thrust. The servo motor serves as the driving element. An electric cylinder converts the servo motor's rotational motion into linear motion, pushing the piston forward. This causes the liquid in the measuring cylinder to be discharged from the cylinder or compressed, forming a high-pressure liquid. Calculation of volume expansion: Where E is the volume expansion value, in cm 3 / m, accurate to 0.01cm 3 / m; V is the total volume of three expansions, unit is cm 3 , accurate to 0.01cm 3 ; C is the correction coefficient, unit is cm 3 , accurate to 0.01cm 3 ; L is the free length of the sample, in m.
[0003] Although the test equipment can meet the needs, it has the disadvantages of being unable to accurately control the displacement of the piston in the measuring cylinder, resulting in poor consistency in repeated tests. Summary of the Invention
[0004] In order to overcome the deficiencies of the prior art, the utility model provides a device for improving the accuracy of testing the volume expansion of a brake hose. A displacement sensor is added to monitor the piston displacement of a measured piston cylinder, and the data is transmitted to a computer control center for processing. The displacement distance device of the drive shaft in the servo motor is more accurately controlled, thereby overcoming the shortcomings of poor consistency in repeated tests.
[0005] To achieve the above-mentioned purpose, a device is designed to improve the accuracy of testing the volume expansion of a brake hose. The device includes a liquid storage tank, an infusion gear pump, an overflow valve, a reversing solenoid valve, a pressure sensor, and a servo motor. The device is characterized in that: the liquid output port of the liquid storage tank is connected to the input port of the infusion gear pump, the output port of the infusion gear pump is respectively connected to one end of the overflow valve and one end of the first reversing solenoid valve, the other end of the first reversing solenoid valve is respectively connected to one end of the second reversing solenoid valve and the piston cylinder, the other end of the overflow valve and the other end of the second reversing solenoid valve are combined and connected to the liquid input port of the liquid storage tank; a pressure sensor is provided on the pipeline between the other end of the first reversing solenoid valve and the piston cylinder; the end of the piston rod in the piston cylinder is connected to the drive shaft of the servo motor; and a displacement sensor is provided on the piston rod of the piston cylinder.
[0006] A flow channel switch is provided between the liquid output port of the liquid storage tank and the input port of the infusion gear pump.
[0007] A flow channel switch is provided between the other end of the overflow valve, the other end of the second reversing solenoid valve and the liquid input port of the liquid storage tank.
[0008] A proximity switch is provided on one side of the liquid storage tank.
[0009] The piston cylinder is the piston cylinder to be tested.
[0010] Compared with the prior art, the utility model provides a device for improving the accuracy of testing the volume expansion of a brake hose, adds a displacement sensor to monitor the piston displacement of a measured piston cylinder, and transmits the data to a computer control center for processing, thereby more accurately controlling the displacement distance device of a drive shaft in a servo motor, thereby overcoming the disadvantages of poor consistency in repeated tests. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the structural connection of the utility model.
[0012] See also Figure 1 , 1 is a liquid storage tank, 2 is a proximity switch, 3 is an infusion gear pump, 4 is an overflow valve, 5 is a second reversing solenoid valve, 6 is a first reversing solenoid valve, 7 is a pressure sensor, 8 is a servo motor, 9 is a displacement sensor, and 10 is a piston cylinder. DETAILED DESCRIPTION
[0013] The present invention will be further described below with reference to the accompanying drawings.
[0014] like Figure 1 As shown, the liquid output port of the liquid storage tank 1 is connected to the input port of the infusion gear pump 3, the output port of the infusion gear pump 3 is respectively connected to one end of the overflow valve 4 and one end of the first reversing solenoid valve 6, the other end of the first reversing solenoid valve 6 is respectively connected to one end of the second reversing solenoid valve 5 and the piston cylinder 10, the other end of the overflow valve 4 and the other end of the second reversing solenoid valve 5 are combined and connected to the liquid input port of the liquid storage tank 1; a pressure sensor 7 is provided on the pipeline between the other end of the first reversing solenoid valve 6 and the piston cylinder 10; the end of the piston rod in the piston cylinder 10 is connected to the drive shaft of the servo motor 8; and a displacement sensor 9 is provided on the piston rod of the piston cylinder 10.
[0015] A flow channel switch is provided between the liquid output port of the liquid storage tank 1 and the liquid input port of the infusion gear pump 3 .
[0016] A flow channel switch is provided between the other end of the overflow valve 4 , the other end of the second reversing solenoid valve 5 and the liquid input port of the liquid storage tank 1 .
[0017] A proximity switch 2 is provided on one side of the liquid storage tank 1 .
[0018] The piston cylinder 10 is the piston cylinder to be tested.
[0019] The working principle of this utility model is as follows: brake fluid flows from the fluid reservoir 1 into the infusion gear pump 3, and then flows into the first reversing solenoid valve 6 through the infusion gear pump 3. The first reversing solenoid valve 6 opens, and the liquid continues to enter the piston cylinder 10 (the piston cylinder to be tested). The drive shaft of the servo motor 8 pushes the piston in the piston cylinder 10. At the same time, the displacement sensor 9 controls the forward stroke of the piston in the piston cylinder 10 and measures the forward movement of the piston in the cylinder, causing the liquid in the measuring cylinder to be discharged from the cylinder body or compressed with the piston, forming a high-pressure liquid. According to the characteristic pressure of the test parameter, the system automatically calculates the result value according to the test pressure value. The addition of the displacement sensor 9 improves the accuracy of the test and the precision of the expansion amount.
[0020] The displacement sensor monitors the servo motor to control the piston forward movement of the piston cylinder under test, outputting a controllable and accurate displacement value and thrust. The servo motor is used as the driving element, and the displacement sensor transmits the data to the computer control center for processing.
[0021] The utility model adds a displacement sensor and a servo motor combination to replace the traditional servo motor direct output transmission mechanism, and controls the servo motor more accurately through the displacement sensor, thereby improving the consistency of repeated test data.
Claims
1. A device for improving the accuracy of testing the volume expansion of a brake hose, comprising a fluid reservoir, an infusion gear pump, a relief valve, a reversing solenoid valve, a pressure sensor, and a servo motor, characterized in that: The liquid output port of the liquid storage tank (1) is connected to the input port of the infusion gear pump (3), the output port of the infusion gear pump (3) is respectively connected to one end of the overflow valve (4) and one end of the first reversing solenoid valve (6), the other end of the first reversing solenoid valve (6) is respectively connected to one end of the second reversing solenoid valve (5) and the piston cylinder (10), the other end of the overflow valve (4) and the other end of the second reversing solenoid valve (5) are combined and connected to the liquid input port of the liquid storage tank (1); a pressure sensor (7) is provided on the pipeline between the other end of the first reversing solenoid valve (6) and the piston cylinder (10); the end of the piston rod in the piston cylinder (10) is connected to the drive shaft of the servo motor (8); and a displacement sensor (9) is provided on the piston rod of the piston cylinder (10).
2. The device for improving the accuracy of testing the volume expansion of a brake hose according to claim 1, characterized in that: A flow channel switch is provided between the liquid output port of the liquid storage tank (1) and the input port of the infusion gear pump (3).
3. The device for improving the accuracy of testing the volume expansion of a brake hose according to claim 1, characterized in that: A flow channel switch is provided between the other end of the overflow valve (4), the other end of the second reversing solenoid valve (5) and the liquid input port of the liquid storage tank (1).
4. The device for improving the accuracy of testing the volume expansion of a brake hose according to claim 1, characterized in that: A proximity switch (2) is provided on one side of the liquid storage tank (1).
5. The device for improving the accuracy of testing the volume expansion of a brake hose according to claim 1, characterized in that: The piston cylinder (10) is the piston cylinder to be tested.