CN211652064U - Degaussing characteristic detection device for CDC shock absorber electromagnetic valve - Google Patents
Degaussing characteristic detection device for CDC shock absorber electromagnetic valve Download PDFInfo
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- CN211652064U CN211652064U CN202020415975.1U CN202020415975U CN211652064U CN 211652064 U CN211652064 U CN 211652064U CN 202020415975 U CN202020415975 U CN 202020415975U CN 211652064 U CN211652064 U CN 211652064U
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- displacement detection
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Abstract
The demagnetization characteristic detection device of the CDC shock absorber electromagnetic valve comprises a dark box, wherein the dark box is of a cavity shell structure, a second movable hole is formed in the center of the surface of the dark box, the top surface of the dark box is used for supporting a valve head shell, a valve core is installed inside the valve head shell, the valve core penetrates through the second movable hole in a sliding mode, and the outer wall of the valve core is in sliding fit with the inner wall of the second movable hole; the camera bellows is arranged on the top surface of the base, a photoelectric displacement detection element is arranged on the surface of the base and is oppositely arranged at the bottom of the second movable hole, the photoelectric displacement detection element is used for detecting the position of the valve core, and the photoelectric displacement detection element is electrically connected with an oscilloscope; the utility model discloses can be quick, simple and convenient measure the demagnetization characteristic of CDC solenoid valve, and then the effectual defective work of stopping flows into market, improves product quality.
Description
Technical Field
The utility model belongs to the technical field of the CDC valve processing, in particular to CDC shock absorber solenoid valve demagnetization characteristic detection device.
Background
The CDC vibration damper electromagnetic valve is a component used for an automobile CDC vibration damping system, the automobile CDC vibration damping system is composed of a central control unit (ECU), a CDC vibration damper, a vehicle body acceleration sensor, a wheel acceleration sensor and a CDC control valve, the driving state of the automobile is judged through data of the vehicle body acceleration sensor, the wheel acceleration sensor and a transverse acceleration sensor on the automobile, the central control unit ECU applies a damping signal to the CDC control valve on the vibration damper through calculation, and the opening degree of the CDC valve is controlled in real time to provide vibration damping force suitable for the current state;
the demagnetization characteristic is an important parameter for measuring the performance of the electromagnetic valve of the CDC shock absorber, namely the closing response speed of the electromagnetic valve when the power supply is disconnected; if the response speed exceeds a qualified value, the electromagnetic valve needs a long time to be closed, and the balance of the CDC vibration damping system is damaged after the electromagnetic valve is used for a long time;
the current CDC valve lacks the practical, simple and convenient detection device to demagnetization characteristic in the production, leads to some nonconforming products to flow into the market.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the not enough of prior art existence, provide CDC shock absorber solenoid valve demagnetization characteristic detection device, concrete technical scheme is as follows:
the demagnetization characteristic detection device of the CDC shock absorber electromagnetic valve comprises a dark box, wherein the dark box is of a cavity shell structure, a second movable hole is formed in the center of the surface of the dark box, the top surface of the dark box is used for supporting a valve head shell, a valve core is installed inside the valve head shell, the valve core penetrates through the second movable hole in a sliding mode, and the outer wall of the valve core is in sliding fit with the inner wall of the second movable hole;
the camera bellows is arranged on the top surface of the base, a photoelectric displacement detection element is arranged on the surface of the base and is oppositely arranged at the bottom of the second movable hole, the photoelectric displacement detection element is used for detecting the position of the valve core, and the photoelectric displacement detection element is electrically connected with an oscilloscope;
the top surface of the photoelectric displacement detection element is provided with an emitting piece and a receiving piece, the emitting piece is used for emitting light, the receiving piece is used for receiving reflected light, and the emitting piece and the receiving piece are arranged inside the bottom of the second movable hole in an opposite mode.
Furthermore, a movable pipe is arranged in the dark box and is arranged at the bottom of the second movable hole, and the inner diameter of the movable pipe is the same as the diameter of the second movable hole.
Further, the outer wall of the bottom end of the valve core is sleeved with a sealing ring, and the outer wall of the sealing ring is attached to the inner wall of the movable pipe.
Furthermore, the surface of the base is provided with a slide rail, and the slide rail is connected with the photoelectric displacement detection element in a sliding manner.
Furthermore, a connecting seat is arranged on the side surface of the photoelectric displacement detection element, the connecting seat is in threaded connection with an adjusting rod, and the adjusting rod penetrates through the side surface of the dark box in a sliding mode.
Furthermore, the camera bellows is inserted into the base, and the bottom area of the camera bellows is the same as the surface area of the base.
The utility model has the advantages that:
the degaussing characteristic of measuring CDC solenoid valve that can be quick, simple and convenient, and then the effectual nonconforming product of stopping flows into market, improves product quality to device simple structure, convenient operation, low cost.
Drawings
Fig. 1 is a schematic structural view illustrating a demagnetization characteristic detection apparatus of a CDC damper solenoid valve according to the present invention;
FIG. 2 is a schematic view of the connection structure between the camera bellows and the base of the present invention;
shown in the figure: 1. the device comprises a valve head shell, a 2, an electromagnetic coil, a 3, a spring, a 4, a valve core, a 41, a sealing ring, a 5, a fixed seat, a 51, a mounting groove, a 52, a first movable hole, a 6, a camera bellows, a 61, a second movable hole, a 62, a movable pipe, a 7, a base, a 71, a sliding rail, a 8, a photoelectric displacement detection element, a 81, a transmitting element, a 82, a receiving element, a 83, a connecting seat, a 9, an oscilloscope, a 10 and an adjusting rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The demagnetization characteristic detection device for the electromagnetic valve of the CDC shock absorber comprises a dark box 6, wherein the dark box 1 is of a hollow shell structure, and the dark box 6 is adopted to avoid the influence of external light on a photoelectric displacement detection element 8 and ensure the displacement detection precision;
a second movable hole 61 is formed in the center of the surface of the camera bellows 1, the top surface of the camera bellows 6 is used for supporting the valve head housing 1, a valve core 4 is installed inside the valve head housing 1, the valve core 4 penetrates through the second movable hole 61 in a sliding manner, and the outer wall of the valve core 4 is attached to the inner wall of the second movable hole 61 in a sliding manner; during inspection, the valve head shell 1 is only required to be placed on the dark box 1, the valve core 4 is inserted into the dark box 1 through the second movable hole 61, the installation and the fixation are simple and convenient, and the positioning is rapid;
the camera bellows 6 is mounted on the top surface of the base 7, the surface of the base 7 is mounted with the photoelectric displacement detection element 8, the photoelectric displacement detection element 8 is relatively disposed at the bottom of the second movable hole 61, the photoelectric displacement detection element 8 is used for detecting the position of the valve core 4, the displacement condition of the valve core 4 can be accurately measured by using the photoelectric displacement detection element 8, and the demagnetization characteristics can be conveniently judged;
the photoelectric displacement detection element 8 is electrically connected with an oscilloscope 9; the oscilloscope 9 is used for receiving the electric signal transmitted by the photoelectric displacement detection element 8 and displaying a graph;
the top surface of the photoelectric displacement detection element 8 is provided with an emitting piece 81 and a receiving piece 82, the emitting piece 81 is used for emitting light, the receiving piece 82 is used for receiving reflected light, the light emitted by the emitting piece 81 is reflected by the bottom end of the valve core 4, and the reflected light is received by the receiving piece 82;
the emitter piece 81 and the receiver piece 82 are each placed opposite to the bottom inside of the second movable hole 61; both the emitting piece 81 and the receiving piece 82 are located in the so-called area of the second movable hole 61, and the reflected light can be prevented from being blocked by other portions, so that the emitted light can be sufficiently transmitted to the receiving piece 82.
As an improvement of the above technical solution, a movable tube 62 is arranged inside the dark box 6, the movable tube 62 is oppositely arranged at the bottom of the second movable hole 61, and the inner diameter of the movable tube 62 is the same as the diameter of the second movable hole 61; the movable tube 62 is used for simulating a movable channel of the valve core 4 in the electromagnetic valve, so that the detection precision is higher.
As an improvement of the above technical solution, a sealing ring 41 is sleeved on the outer wall of the bottom end of the valve core 4, and the outer wall of the sealing ring 41 is attached to the inner wall of the movable tube 62; the friction between the movable tube 62 and the seal ring 41 can make the response speed of the valve core 4 more accurate.
As an improvement of the above technical solution, a slide rail 71 is disposed on the surface of the base 7, and the slide rail 71 is slidably connected to the photoelectric displacement detecting element 8; photoelectric displacement detection element 8 can slide and adjust, and it is higher to realize photoelectric displacement detection element 8's detection precision, when case 4 mounted position appeared squinting, then need adjust photoelectric displacement detection element 8 for receiving piece 82 can fully receive light.
As an improvement of the above technical solution, a connecting seat 83 is arranged on a side surface of the photoelectric displacement detecting element 8, the connecting seat 83 is in threaded connection with an adjusting rod 10, and the adjusting rod 10 slides through a side surface of the dark box 6; the adjusting rod 10 can adjust the position of the photoelectric displacement detection element 8 outside the camera bellows 6, so that after the detection device is assembled, the adjustment can be carried out while observing the oscilloscope 9, the adjusting precision is higher, the operation is simpler and more convenient, and the adjusting rod and the connecting seat 83 can be quickly assembled and separated by a threaded connection mode.
As an improvement of the above technical solution, the dark box 6 is inserted into the base 7, and the bottom area of the dark box 6 is the same as the surface area of the base 7; the rapid installation and separation of the camera bellows 6 and the base 7 can be realized by the plug-in mode, and the camera bellows 6 and the base 7 adopt a separation structure so as to be convenient for overhauling the detection element.
As shown in fig. 1, fig. 1 is a schematic structural view of a degaussing characteristic detection device of a CDC damper electromagnetic valve according to the present invention;
valve head portion of solenoid valve includes valve head housing 1, valve head housing 1's internally mounted has solenoid 2, valve head housing 1's outer wall is equipped with the terminal, the terminal is used for connecting external power source, 2 electric connection terminals of solenoid, solenoid 2's internally mounted has fixing base 5, the inside of fixing base 5 is opened and shut and is had mounting groove 51 and first activity hole 52, mounting groove 51 is located the upper portion of first activity hole 52, the inside of mounting groove 51 is equipped with spring 3, case 4 is connected to spring 3's bottom, case 4 slides and runs through first activity hole 52, second activity hole 61 sets up relatively with first activity hole 52 and the diameter is the same.
The method for detecting the demagnetization characteristic of the electromagnetic valve of the CDC shock absorber comprises the following steps:
s1, placing the valve head shell 1 on the top surface of a black box 6, extending the valve core 4 into the movable tube 62, and attaching the sealing ring 41 at the bottom end of the valve core 4 to the movable tube 62; this step is used for the solenoid valve assembly and device assembly before testing;
the method specifically comprises the following steps: separating a valve head control assembly of the electromagnetic valve from a circulating assembly, installing the valve head assembly on a camera bellows 6, enabling a valve head shell 1 to be attached to the surface of the camera bellows 6, enabling a valve core 4 to penetrate through a second movable hole 61 and extend into a movable tube 62, enabling a sealing ring 41 to be attached to the inner wall of the movable tube 62, and enabling a binding post of the valve head, a photoelectric displacement detection element and an oscilloscope to be connected with an external power supply in parallel;
s2, switching on a power supply, wherein an electromagnetic coil 2 in the valve head shell 1 generates a magnetic field, and the iron valve core 4 moves upwards to the highest point; when the electromagnetic coil 2 is electrified, a magnetic field is generated, so that the iron valve core 4 is attracted to move upwards, the valve core 4 compresses the spring 3 while moving upwards, and the electromagnetic valve is in an open state; the step enters a detection starting stage;
s3, opening the photoelectric displacement detection element 8 and the oscilloscope 9, setting an initial point of the photoelectric displacement detection element 8, and zeroing and correcting the oscilloscope 9; the step is used for adjusting the detection device, and the position adjustment is carried out after the valve core 4 is moved, so that the precision of detecting the demagnetization characteristic of the electromagnetic valve can be further ensured;
the method specifically comprises the following steps: the photoelectric displacement detection element 8 can be driven to move left and right along the slide rail 71 by pulling the adjusting rod 10 left and right, and the photoelectric displacement detection element stops when the oscilloscope 9 stably displays the received signal; the highest position of the valve core at this time is recorded as an initial point.
S4, switching off the power supply, enabling the valve core 4 to move downwards rapidly, recording the displacement value of the valve core 4 changed along with time by the photoelectric displacement detection element 8, and finally obtaining an S-T curve in the oscilloscope 9; recording the response speed of the valve core in single action; the step is used for recording the response speed of the electromagnetic valve when the power supply is turned off;
the method specifically comprises the following steps: the power supply is cut off, the electromagnetic coil is demagnetized, the valve core 4 is rapidly reset downwards under the action of self gravity and the reverse thrust of the spring 3, the photoelectric displacement detection element 8 detects the position of the valve core in real time in the whole reset process, and when the valve core falls to the lowest point, the position value is not changed any more, and the oscilloscope is a straight line;
the highest point initial position is recorded as X1And the lowest point position is marked as X2The time is t, and the valve core response speed V ═ X1-X2)/t；
S5, repeating S2-S4, summarizing the response speed of each valve core, calculating an average value, and judging the demagnetization condition of the electromagnetic coil according to the average value; and repeating for 4-5 times, eliminating single test error by using the average value to obtain an accurate response speed value, wherein if the response speed is within a qualified range, the demagnetization characteristic reaches the standard, and if the response speed is not within the qualified range, the solenoid valve is an unqualified product and needs to be reworked.
When photoelectric displacement detection element 8 needs to be overhauled, adjusting rod 10 is unscrewed, adjusting rod 10 and connecting seat 83 are separated, then camera bellows 6 is lifted, camera bellows 6 and base 7 are separated, and photoelectric displacement detection element 8 can be drawn out for overhaul.
The photoelectric displacement detecting element 8 is exemplified by: diffuse reflection M5 subminiature laser sensor;
the oscilloscope 9 illustratively employs a tek mso oscilloscope.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
- The degaussing characteristic detection device for the electromagnetic valve of the CDC shock absorber is characterized in that: the valve comprises a camera bellows, wherein the camera bellows is of a cavity shell structure, a second movable hole is formed in the center of the surface of the camera bellows, the top surface of the camera bellows is used for supporting a valve head shell, a valve core is arranged inside the valve head shell, the valve core penetrates through the second movable hole in a sliding mode, and the outer wall of the valve core is in sliding fit with the inner wall of the second movable hole;the camera bellows is arranged on the top surface of the base, a photoelectric displacement detection element is arranged on the surface of the base and is oppositely arranged at the bottom of the second movable hole, the photoelectric displacement detection element is used for detecting the position of the valve core, and the photoelectric displacement detection element is electrically connected with an oscilloscope;the top surface of the photoelectric displacement detection element is provided with an emitting piece and a receiving piece, the emitting piece is used for emitting light, the receiving piece is used for receiving reflected light, and the emitting piece and the receiving piece are arranged inside the bottom of the second movable hole in an opposite mode.
- 2. The apparatus for detecting demagnetization characteristics of a CDC damper solenoid valve according to claim 1, wherein: the inside of camera bellows is equipped with the movable tube, the movable tube is arranged in relatively the bottom of second activity hole, the internal diameter of movable tube with the diameter of second activity hole is the same.
- 3. The apparatus for detecting demagnetization characteristics of a CDC damper solenoid valve according to claim 2, wherein: and the outer wall of the bottom end of the valve core is sleeved with a sealing ring, and the outer wall of the sealing ring is attached to the inner wall of the movable pipe.
- 4. The apparatus for detecting demagnetization characteristics of a CDC damper solenoid valve according to claim 1, wherein: the surface of the base is provided with a slide rail, and the slide rail is connected with the photoelectric displacement detection element in a sliding manner.
- 5. The apparatus for detecting demagnetization characteristics of a CDC damper solenoid valve according to claim 4, wherein: the photoelectric displacement detection element is characterized in that a connecting seat is arranged on the side face of the photoelectric displacement detection element, the connecting seat is in threaded connection with an adjusting rod, and the adjusting rod penetrates through the side face of the camera bellows in a sliding mode.
- 6. The apparatus for detecting demagnetization characteristics of a CDC damper solenoid valve according to claim 1, wherein: the camera bellows is spliced with the base, and the bottom area of the camera bellows is the same as the surface area of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020415975.1U CN211652064U (en) | 2020-03-27 | 2020-03-27 | Degaussing characteristic detection device for CDC shock absorber electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020415975.1U CN211652064U (en) | 2020-03-27 | 2020-03-27 | Degaussing characteristic detection device for CDC shock absorber electromagnetic valve |
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| Publication Number | Publication Date |
|---|---|
| CN211652064U true CN211652064U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020415975.1U Active CN211652064U (en) | 2020-03-27 | 2020-03-27 | Degaussing characteristic detection device for CDC shock absorber electromagnetic valve |
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| Country | Link |
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| CN (1) | CN211652064U (en) |
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2020
- 2020-03-27 CN CN202020415975.1U patent/CN211652064U/en active Active
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