Detection structure of thrust plate and vehicle provided with detection structure
By adding a through hole on the thrust plate and installing a detection device, and using an inductive sensor to detect thrust plate wear, the problem of thrust plate wear detection during engine operation is solved, and safe engine operation and fault warning are achieved.
Patent Information
- Application Number
- CN202422594218.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The existing technology makes it difficult to detect the wear of the thrust plate in a timely manner during engine operation, which causes the axial clearance of the crankshaft to increase and may cause problems such as engine scrapping.
A through hole is added to the thrust plate and a detection device is installed. The actual distance between the thrust plate and the thrust plate connection surface is measured through the detection device during engine operation. An inductive sensor is used to output an electrical signal to indicate the degree of wear, and an alarm component is provided to promptly remind maintenance.
It can detect thrust plate wear in time during engine operation, avoid the increase of crankshaft axial clearance due to severe wear, improve the accuracy and timeliness of detection, and reduce the risk of engine failure.
Smart Images
Figure CN223361350U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, in particular to a detection structure of a thrust plate and a vehicle equipped with the detection structure. Background Art
[0002] As a type of engine sliding bearing, the thrust plate primarily supports the crankshaft bearing, ensuring axial rotation of the crankshaft while preventing axial movement. In practice, the thrust plate and the friction pairs are lubricated and cooled by engine oil.
[0003] Thrust plates are designed to meet the theoretical crankshaft axial clearance requirements, and the limits must not be exceeded during engine operation to ensure proper operation. However, in practice, poor lubrication or excessive axial forces can cause wear on the thrust plates during normal engine operation. Long-term operation exacerbates this wear, increasing the crankshaft axial clearance. This can lead to major failures such as chipping, resulting in engine failure and compromising vehicle safety.
[0004] It can be seen that how to detect thrust plates and detect abnormal wear in time is of great significance. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a detection structure for a thrust plate and a vehicle equipped with the detection structure. A through hole is added to the thrust plate and a detection device is installed in the through hole. Based on this, during the operation of the engine, whether the thrust plate is severely worn can be detected in time by detecting the distance, so as to avoid the problem that the axial clearance of the crankshaft becomes larger due to severe wear of the thrust plate, thereby causing the engine to be scrapped.
[0006] The embodiment of the present utility model discloses the following technical solutions:
[0007] On the one hand, an embodiment of the present invention provides a detection structure for a thrust plate, the detection structure comprising:
[0008] a crankshaft corresponding to the engine, wherein during operation of the engine, the crankshaft is used to transmit driving force to the vehicle on which the engine is installed;
[0009] a thrust plate connected to the crankshaft and used to support the crankshaft, the thrust plate having a through hole, the central axis of the through hole being perpendicular to a first connecting surface, the first connecting surface being the connecting surface between the thrust plate and the crankshaft;
[0010] The through hole is used to install a detection device. During the operation of the engine, the detection device is used to determine the actual distance between the end of the detection device and the first connecting surface. The actual distance is used to indicate the degree of wear of the thrust plate.
[0011] Optionally, the detection structure further includes:
[0012] a machine body, the machine body being connected to the thrust plate and being used to support the thrust plate;
[0013] The through hole is provided through the machine body and the thrust plate, and the central axis of the through hole is perpendicular to the second connecting surface, which is the connecting surface between the machine body and the thrust plate.
[0014] Optionally, the engine body is the crankshaft main bearing cover.
[0015] Optionally, the through hole provided in the body portion is a threaded hole, and the detection structure further includes:
[0016] A threaded part is matched with the threaded hole, and the threaded part is used to fix the detection device in the through hole.
[0017] Optionally, the installation depth of the threaded part in the threaded hole is adjusted so that the initial distance between the end of the detection device and the first connecting surface is a preset distance.
[0018] Optionally, the detection device is a sensor, and the end of the detection device is a probe tip of the sensor.
[0019] Optionally, the sensor is an inductive sensor. When the actual distance is less than the target distance, the inductive sensor outputs an electrical signal. The signal strength of the electrical signal is used to determine the actual distance. The signal strength of the electrical signal is negatively correlated with the actual distance, and the actual distance is negatively correlated with the degree of wear of the thrust plate.
[0020] Optionally, the detection structure further includes:
[0021] An alarm component is configured to output abnormal alarm information if, during the operation of the engine, the frequency of the electrical signal output by the inductive sensor, whose signal strength exceeds the intensity threshold, is greater than the frequency threshold. The abnormal alarm information is configured to indicate that the thrust plate has abnormal wear.
[0022] Optionally, the electrical signal is a pulse voltage signal.
[0023] On the other hand, an embodiment of the present invention provides a vehicle, wherein the engine of the vehicle is equipped with a detection structure as described in any one of the aforementioned embodiments.
[0024] As can be seen from the above technical solution, the thrust plate is connected to the crankshaft and has a through hole. The central axis of the through hole is perpendicular to the first connecting surface, which is the connecting surface between the thrust plate and the crankshaft. The through hole is used to install a detection device. During engine operation, the crankshaft is used to transmit driving force to the vehicle on which the engine is installed, and the thrust plate is used to support the crankshaft. The detection device is used to determine the actual distance between the end of the detection device and the first connecting surface. Because the detection device is installed in the through hole, the detection device and the thrust plate are relatively fixed. As the crankshaft continues to move during engine operation, the thrust plate will continue to wear. After wear, the thickness of the thrust plate decreases, thereby reducing the distance between the end of the detection device and the first connecting surface. Therefore, the actual distance between the end of the detection device and the first connecting surface can be used to indicate the degree of wear of the thrust plate. It can be seen that the present invention provides a detection structure that adds a through hole on the thrust plate and installs a detection device in the through hole. Based on this, during the operation of the engine, it is possible to promptly detect whether the thrust plate is severely worn by detecting the distance, so as to avoid problems such as an increase in the axial clearance of the crankshaft due to severe wear of the thrust plate, thereby causing the engine to be scrapped. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0026] Figure 1 The present invention provides a cross-sectional schematic diagram of a detection structure of a thrust plate according to an embodiment of the present invention.
[0027] in, Figure 1 The reference numerals in the figures are described as follows:
[0028] 1 crankshaft, 2 thrust plate, 3 detection device, 4 engine body, 5 first connecting surface, and 6 second connecting surface. DETAILED DESCRIPTION
[0029] In order to help those skilled in the art better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.
[0030] Furthermore, the words “first”, “second”, etc. mentioned herein are only used to facilitate description of two or more structures or components with the same or similar structures and / or functions, and do not imply any special limitation on the order and / or importance.
[0031] To prevent problems such as increased crankshaft axial clearance due to thrust plate wear, which could lead to engine failure, the thrust plate supports the crankshaft, primarily ensuring axial rotation while preventing axial movement. Related art provides an operation method after the engine is shut down. Specifically, after the engine is shut down, the wear of the thrust plate is indirectly reflected by measuring the movement of the front and rear ends of the crankshaft.
[0032] However, this method requires measuring the crankshaft's front and rear end movement, which is more difficult. Furthermore, it can only be performed after the engine is shut down, making it impossible to detect wear during operation. This makes it particularly difficult to apply to larger engines.
[0033] In this regard, the present invention provides a detection structure for a thrust plate and a vehicle equipped with the detection structure. A through hole is added to the thrust plate and a detection device is installed in the through hole. Based on this, during the operation of the engine, whether the thrust plate is severely worn can be detected in time by detecting the distance, so as to avoid problems such as an increase in the axial clearance of the crankshaft due to severe wear of the thrust plate, thereby causing the engine to be scrapped.
[0034] Based on this, the thrust plate wear condition can be detected with a simpler structure, making it easier to implement. Moreover, the detection can be performed in real time and dynamically during engine operation, no longer limited by the engine status, and has higher applicability.
[0035] Specifically described by the following examples:
[0036] Figure 1 This is a cross-sectional schematic diagram of a thrust plate detection structure provided by an embodiment of the present invention. The detection structure may include a crankshaft 1 corresponding to the engine, a thrust plate 2, and a detection device 3. Specifically:
[0037] During engine operation, crankshaft 1 transmits driving force to the vehicle in which the engine is installed. A thrust plate 2 is connected to crankshaft 1. This plate supports crankshaft 1, primarily ensuring axial rotation and preventing axial movement. The connection surface between thrust plate 2 and crankshaft 1 is a first connection surface 5.
[0038] The thrust plate 2 has a through hole, the central axis of which is perpendicular to the first connecting surface 5. Furthermore, the through hole can be used to install a detection device. During engine operation, the detection device can be used to determine the actual distance between the end of the detection device and the first connecting surface 5. Since the detection device is installed in the through hole, the detection device and the thrust plate are relatively fixed. As the crankshaft continuously moves during engine operation, the thrust plate will continue to wear. After wear, the thickness of the thrust plate decreases, thereby reducing the distance between the end of the detection device and the first connecting surface. Therefore, the actual distance between the end of the detection device and the first connecting surface can be used to indicate the degree of wear of the thrust plate. The actual distance is negatively correlated with the degree of wear of the thrust plate.
[0039] It can be seen that the present invention provides a detection structure that adds a through hole on the thrust plate and installs a detection device in the through hole. Based on this, during the operation of the engine, it is possible to promptly detect whether the thrust plate is severely worn by detecting the distance, so as to avoid problems such as an increase in the axial clearance of the crankshaft due to severe wear of the thrust plate, thereby causing the engine to be scrapped.
[0040] exist Figure 1 In the example, a dashed dot-dash line may be used to indicate the direction of the central axis of the through hole.
[0041] In practical applications, the thrust plate itself has a certain thickness. Therefore, in one possible implementation, if the thickness of the thrust plate is greater than or equal to the length of the detection device (the length can be the dimension from the end of the detection device to the top of the detection device), a through hole can be provided in the thrust plate to install the detection device and determine the actual distance between the end of the detection device and the first connecting surface during engine operation. Based on this, only the through hole needs to be provided in the thrust plate, simplifying the structure.
[0042] Considering that the thickness of the thrust plate is usually relatively small, in order to better install the detection device, in another possible implementation, a through hole can be provided by means of other components in the engine connected to the thrust plate. In specific implementation, the aforementioned detection structure can also include:
[0043] The engine body 4 is connected to the thrust plate 2 and can be used to support the thrust plate 2. Accordingly, a through hole can be provided through the engine body and the thrust plate, with the central axis of the through hole perpendicular to the second connecting surface 6, which serves as the connecting surface between the engine body 4 and the thrust plate 2. Based on this, by utilizing other components in the engine (specifically the engine body) that are connected to the thrust plate, a through hole can be provided through the engine body and the thrust plate. This allows for a deeper through hole, which not only facilitates the installation of detection equipment but also allows for compatibility with various detection equipment of varying lengths, improving applicability.
[0044] In practical applications, the crankshaft main bearing caps are used to secure and support the crankshaft, and thrust washers are typically mounted on the front and rear thrust surfaces of the main bearing housing and supported by the crankshaft main bearing caps. Therefore, in one possible implementation, the aforementioned engine body may be the crankshaft main bearing caps.
[0045] Furthermore, in order to facilitate installation of the detection device in the through hole, the detection device and the thrust plate are relatively fixed, thereby enabling more accurate detection of the actual distance during engine operation. In one possible implementation, the through hole provided in the engine body may be a threaded hole, and accordingly, the detection structure may further include:
[0046] The threaded part is matched with the threaded hole and can be used to fix the detection device in the through hole. Based on this, the end of the detection device and the thrust plate are relatively fixed. In this way, the movement of the installation position of the detection device will not cause the actual distance to be too large and thus fail to detect wear anomalies, or cause the actual distance to be too small and thus falsely detect wear anomalies, which is conducive to improving detection accuracy.
[0047] During actual installation, the installation depth of the threaded part in the threaded hole can be adjusted so that the initial distance between the end of the detection device and the first connection surface is a preset distance.
[0048] The preset distance may be determined based on the wear thickness that the thrust plate can tolerate, so that the detection device can be flexibly installed to suit the actual conditions of different thrust plates.
[0049] In a possible implementation, the aforementioned detection device may be a sensor, and accordingly, the end of the detection device may be a probe tip of the sensor. Figure 1 In this example, the detection device 3 may be a sensor, and the portion pointing toward the first connection surface 5 is a probe tip of the sensor.
[0050] In a specific implementation, the sensor can be an inductive sensor. Inductive sensors utilize changes in coil self-inductance or mutual inductance to measure non-electrical quantities. They offer a range of advantages, including simple structure, high sensitivity, high output power, low output impedance, strong anti-interference capabilities, and high measurement accuracy. Therefore, they are widely used in electromechanical control systems.
[0051] During engine operation, when the actual distance is less than the target distance, the gap between the crankshaft and the tip decreases to a certain level, completing the circuit. At this point, the inductive sensor outputs an electrical signal. The strength of the electrical signal can be used to determine the actual distance, and there is a negative correlation between the electrical signal strength and the actual distance, as well as the actual distance and the degree of wear on the thrust plate. Specifically, the smaller the actual distance, the stronger the electrical signal output by the inductive sensor. Furthermore, the smaller the actual distance, the smaller the distance from the first connecting surface to the end of the detection device, indicating that the thrust plate has become thinner due to wear, and therefore, the greater the degree of wear on the thrust plate.
[0052] In practical applications, the thickness of the thrust plate can be calculated based on the magnitude of the electrical signal output by the inductive sensor (i.e., the aforementioned signal strength), thereby determining the degree of wear on the thrust plate. Typically, the output electrical signal can be graded into four levels, such as ultra-high, high, medium, and low. These levels correspond to thrust plate wear levels, such as severe wear, wear, normal wear, and good wear. This allows for tiered management of the health of the thrust plate.
[0053] The target distance can be flexibly set based on the specific circumstances of the inductive sensor being assembled and used. This is not a limitation imposed by the present invention. For example, the target distance can be set based on the minimum distance at which a circuit can be conducted, thereby ensuring that the inductive sensor can output an electrical signal. Alternatively, the target distance can be set based on the minimum distance at which the inductive sensor can output an electrical signal with a certain signal strength.
[0054] To promptly address abnormal thrust plate wear, in one possible implementation, the detection structure may further include an alarm component. If, during engine operation, the inductive sensor outputs an electrical signal with a signal strength exceeding a threshold and a frequency greater than a threshold, indicating that the thrust plate has been worn to a relatively thin thickness and exhibits abnormal wear, the alarm component may output an abnormality alarm message indicating abnormal thrust plate wear.
[0055] Based on this, the car owner can be reminded in time that the thrust plate has abnormal wear and needs to be repaired, such as replacing the thrust plate, to avoid further wear and tear that may lead to more serious problems such as engine failure.
[0056] It should also be noted that the present invention does not impose any restrictions on the type of electrical signal. In practical applications, the type of electrical signal can be determined based on the inductive sensor used. For example, in one possible implementation, the electrical signal can be a pulsed voltage signal, i.e., the type of the electrical signal is a voltage signal. For another example, in other embodiments, the electrical signal can also be a current signal.
[0057] As can be seen from the above technical solution, the thrust plate is connected to the crankshaft and has a through hole. The central axis of the through hole is perpendicular to the first connecting surface, which is the connecting surface between the thrust plate and the crankshaft. The through hole is used to install a detection device. During engine operation, the crankshaft is used to transmit driving force to the vehicle on which the engine is installed, and the thrust plate is used to support the crankshaft. The detection device is used to determine the actual distance between the end of the detection device and the first connecting surface. Because the detection device is installed in the through hole, the detection device and the thrust plate are relatively fixed. As the crankshaft continues to move during engine operation, the thrust plate will continue to wear. After wear, the thickness of the thrust plate decreases, thereby reducing the distance between the end of the detection device and the first connecting surface. Therefore, the actual distance between the end of the detection device and the first connecting surface can be used to indicate the degree of wear of the thrust plate. It can be seen that the present invention provides a detection structure that adds a through hole on the thrust plate and installs a detection device in the through hole. Based on this, during the operation of the engine, it is possible to promptly detect whether the thrust plate is severely worn by detecting the distance, so as to avoid problems such as an increase in the axial clearance of the crankshaft due to severe wear of the thrust plate, thereby causing the engine to be scrapped.
[0058] The thrust plate detection structure provided by the present invention is described in detail through the above embodiments. In another aspect, the present invention provides a vehicle, the engine of which is equipped with the detection structure as described in any one of the above embodiments.
[0059] For a better understanding, this embodiment will start from the practical application level and illustrate the detection method of the detection structure of the thrust plate provided by the utility model as follows:
[0060] For example, after the vehicle's engine starts running, the thrust plate detection structure provided by the present invention can be used to perform detection during the engine operation. For example, the electrical signal output by the monitoring sensor within a certain period of time during the engine operation can be monitored. If the output electrical signal is always a low-voltage pulse signal, it is considered that the aforementioned actual distance is still relatively large, so it can be considered that the thrust plate is not worn or is slightly worn. Therefore, a normal prompt message can be output at this time to inform the car owner that the thrust plate is normal.
[0061] If the output electrical signal is a high-voltage pulse signal, the frequency of the output high-voltage pulse signal can be determined. If the frequency is less than a frequency threshold (e.g., 10 times / minute), it indicates that only a small number of high-voltage pulse signals are being generated. Since the crankshaft operates within a certain range of axial clearance, which affects the distance from the first connection surface to the end of the detection device, a small number of high-voltage pulse signals can be considered a false detection, possibly due to the influence of the crankshaft operation, causing the actual detected distance to be occasionally smaller. Accordingly, a normal prompt message can be output at this time to inform the vehicle owner that the thrust plate is functioning normally.
[0062] If the frequency exceeds a threshold (e.g., 10 / minute), indicating that high-voltage pulse signals have been detected repeatedly, it can be assumed that the actual distance has been relatively small during the detection period. This is likely due to excessive wear and thinning of the thrust plate. Therefore, an abnormality alarm can be output to inform the vehicle owner that the thrust plate is abnormally worn and requires prompt repair.
[0063] Furthermore, the duration of the continuous high-voltage pulse signal output can be used to determine whether it is a false positive or a true wear anomaly. For example, if the continuous high-voltage pulse signal output duration is less than the set duration, it can be considered a false positive. Conversely, if the continuous high-voltage pulse signal output duration is greater than or equal to the set duration, it can be considered a true wear anomaly and an abnormality alarm message will be issued.
[0064] Based on this, dynamic, real-time detection is performed during engine operation. Compared to methods used in related technologies, this eliminates the need to shut down the engine, helping to eliminate temperature differences between the engine during operation and after shutdown, thereby improving detection accuracy. Furthermore, compared to manual measurement methods, this method avoids subjective errors, thereby improving detection accuracy.
[0065] The above detailed description of a thrust plate detection structure and a vehicle equipped with the detection structure provided by the embodiments of the present invention has been provided. Specific examples have been used herein to illustrate the principles and implementations of the present invention. The description of the above embodiments is intended only to facilitate understanding of the present invention. Furthermore, those skilled in the art will appreciate that variations in the specific implementation and scope of application are possible based on the disclosure of the present invention.
[0066] In summary, the contents of this specification should not be construed as limiting the present invention. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed herein are intended to be covered by the scope of protection of the present invention. Furthermore, based on the implementations provided in the various aspects above, the present invention can be further combined to provide even more implementations.
Claims
1. A thrust plate detection structure, characterized in that: The detection structure includes: a crankshaft corresponding to the engine, wherein during operation of the engine, the crankshaft is used to transmit driving force to the vehicle on which the engine is installed; a thrust plate connected to the crankshaft and used to support the crankshaft, the thrust plate having a through hole, the central axis of the through hole being perpendicular to a first connecting surface, the first connecting surface being the connecting surface between the thrust plate and the crankshaft; The through hole is used to install a detection device. During the operation of the engine, the detection device is used to determine the actual distance between the end of the detection device and the first connecting surface. The actual distance is used to indicate the degree of wear of the thrust plate.
2. The detection structure according to claim 1, characterized in that: The detection structure also includes: a machine body, the machine body being connected to the thrust plate and being used to support the thrust plate; The through hole is provided through the machine body and the thrust plate, and the central axis of the through hole is perpendicular to the second connecting surface, which is the connecting surface between the machine body and the thrust plate.
3. The detection structure according to claim 2, characterized in that: The engine body is the crankshaft main bearing cap.
4. The detection structure according to claim 2, characterized in that: The through hole provided in the body portion is a threaded hole, and the detection structure further includes: A threaded part is matched with the threaded hole, and the threaded part is used to fix the detection device in the through hole.
5. The detection structure according to claim 4, characterized in that: The installation depth of the threaded part in the threaded hole is adjusted so that the initial distance between the end of the detection device and the first connecting surface is a preset distance.
6. The detection structure according to any one of claims 1 to 5, characterized in that: The detection device is a sensor, and the end of the detection device is a probe tip of the sensor.
7. The detection structure according to claim 6, characterized in that: The sensor is an inductive sensor. When the actual distance is less than the target distance, the inductive sensor outputs an electrical signal. The signal strength of the electrical signal is used to determine the actual distance. The signal strength of the electrical signal is negatively correlated with the actual distance, and the actual distance is negatively correlated with the degree of wear of the thrust plate.
8. The detection structure according to claim 7, characterized in that: The detection structure also includes: An alarm component is configured to output abnormal alarm information if, during the operation of the engine, the frequency of the electrical signal output by the inductive sensor, whose signal strength exceeds the intensity threshold, is greater than the frequency threshold. The abnormal alarm information is configured to indicate that the thrust plate has abnormal wear.
9. The detection structure according to claim 7, characterized in that: The electrical signal is a pulse voltage signal.
10. A vehicle, characterized in that: The engine of the vehicle is equipped with a detection structure according to any one of claims 1 to 9.