Internal blade wear displacement timing detection structure for automobile engine water pump

Abstract

The invention discloses a blade wear displacement timing detection structure built into an automobile engine water pump, relates to the field of detection technology, and includes an automobile engine water pump, wherein the automobile engine water pump includes a mounting seat and a plurality of impeller blades, wherein a reflector is fixedly mounted on one side of one of the impeller blades, a detection structure is arranged on one side above the reflector, an arc plate 2 enters an arc groove to fill the arc groove, so that the internal shape of the impeller box is restored, and most of the structures in the detection structure are hidden inside the equipment groove, so that the regression reflection type photoelectric sensor and the hydraulic sensor are prevented from being attached and polluted by impurities in the water transported by the automobile engine water pump, so as to ensure the accuracy of the working detection of the regression reflection type photoelectric sensor and the hydraulic sensor, and at the same time reduce the occupation of the vehicle body space by the detection structure, and the setting of the detection structure will not affect the normal operation of the automobile engine water pump.

Description

Technical Field

[0001] The invention relates to the field of detection technology, in particular to a timing detection structure for blade wear displacement inside a water pump of an automobile engine. Background Art

[0002] The main reasons for the wear of the car engine water pump impeller include impeller wear, aging of seals, unqualified coolant or long-term non-replacement, foreign matter intrusion, water pump shaft problems, poor quality, etc. ‌Among them, impeller wear: The water pump impeller is the core component of the water pump, responsible for pumping coolant from the water tank to the engine. After long-term use, the impeller may wear due to the non-wear-resistant material or a large amount of scale accumulated on the surface, resulting in insufficient water supply from the pump. Therefore, the detection of impeller wear is one of the important steps to determine equipment failure;

[0003] For example, the existing patent application number is: 202022100113.2. The utility model relates to an online monitoring water pump system, including a water pump, a motor and a base plate. The water pump includes a pump body, an impeller, a mechanical seal and a bearing box provided with a front bearing and a rear bearing for supporting the impeller shaft. It is characterized in that: the bearing box is provided with temperature retro-reflective photoelectric sensors corresponding to the front bearing and the rear bearing positions for detecting the lubrication condition of the front bearing and the rear bearing.

[0004] Although the water outlet pressure of the water pump can be detected by installing a pressure sensor at the outlet end, it can meet the needs of water pump impeller wear detection, but it is difficult to adapt to the detection needs of automobile engine water pumps, which have a small installation space. In addition, the pressure sensor is always in contact with water, and it is easy for impurities in the water to adhere to the detection end of the pressure sensor, affecting the detection sensitivity and accuracy. Summary of the invention

[0005] The purpose of the present invention is to provide a blade wear displacement timing detection structure installed in an automobile engine water pump to solve the problem that the prior art is difficult to adapt to the water pump detection needs of automobile engine water pumps with narrow installation space, and the pressure sensor is always in contact with water, which easily leads to impurities in the water adhering to the detection end of the pressure sensor, thereby affecting the detection sensitivity.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a timing detection structure for blade wear displacement built into a car engine water pump, comprising a car engine water pump, the car engine water pump comprising a mounting seat and a plurality of impeller blades, one side of one of the impeller blades being fixedly mounted with a reflector, a detection structure being arranged on the side above the reflector, the detection structure comprising an equipment slot, a sealing door panel, a telescopic pneumatic cylinder 1, a telescopic pneumatic cylinder 2 and a fixing frame 2, a transmission frame 1 being fixedly mounted on the piston end of the telescopic pneumatic cylinder 1, a transmission frame 2 being fixedly mounted on both ends of the transmission frame 1, a telescopic rod being fixedly mounted on both ends of the transmission frame 2, an arc plate 2 being fixedly connected between two telescopic rod piston ends away from the telescopic pneumatic cylinder 1, an arc plate 1 being fixedly connected between the other two telescopic rod piston ends, a regressive reflective photoelectric sensor and a hydraulic sensor being fixedly inserted on the arc plate 1, an electromagnet, a pressure sensor and a plurality of spring-type telescopic rods being arranged between the telescopic pneumatic cylinder 2 and the arc plate 1, and an estimation structure being arranged on the side of the arc plate 1 away from the arc plate 2.

[0007] Preferably, the automobile engine water pump includes a driving motor, a transmission shaft, an impeller box and an impeller disk portion, the transmission shaft is fixedly mounted on the output end of the driving motor, one end of the transmission shaft extends into the impeller box and passes through the impeller disk portion, a plurality of impeller blades are fixedly mounted on the impeller disk portion, and the impeller disk portion is arranged inside the impeller box.

[0008] Preferably, a water inlet pipe is fixedly connected to the bottom of the mounting seat, and a water outlet pipe is fixedly connected to one side of the mounting seat, one end of the water inlet pipe and the water outlet pipe both extend to the inside of the impeller box, and a plurality of mounting nuts are fixedly installed on the outside of the mounting seat and the outside of the drive motor, one of the impeller blades is provided with a mounting groove, and the reflector is arranged inside the mounting groove and fixedly connected to the impeller blade.

[0009] Preferably, an arc groove is opened on the impeller box, the arc plate 1 is arranged inside the arc groove, and the arc plate 1, the retro-reflective photoelectric sensor and the hydraulic sensor are arranged on one side inside the impeller box and are all configured as curved surfaces.

[0010] Preferably, the tops of the four telescopic rods are fixedly connected to two guide blocks, the second fixing frame is fixedly sleeved on the outside of the telescopic pneumatic cylinder, the outer side of the second fixing frame is fixedly connected to two fixing frames, the tops of the two fixing frames are fixedly connected to the limiting guide rails, and the guide blocks are arranged inside the limiting guide rails on the same side.

[0011] Preferably, the two outer walls of the telescopic pneumatic cylinder are fixedly connected to the mounting seat, the two piston ends of the telescopic pneumatic cylinder are fixedly connected to the outer wall of the pressure sensor, the outer walls of the plurality of spring-type telescopic rods are fixedly connected to the pressure sensor, and the piston ends of the spring-type telescopic rods are fixedly connected to the electromagnet.

[0012] Preferably, a plurality of supporting circular grooves 1 are opened on the side of the arc plate 2 away from the arc plate 1, and a supporting circular rod 1 is arranged inside each of the plurality of supporting circular grooves 1. One end of the supporting circular rod 1 is fixedly connected to the sealing door plate, and the sealing door plate is arranged inside the equipment groove and fixedly connected to the mounting seat.

[0013] Preferably, an arc-shaped side groove one is opened on the side of the arc-shaped plate two close to the arc-shaped plate one, a positive pole magnet is arranged inside the arc-shaped side groove one, and the positive pole magnet is fixedly connected to the arc-shaped plate two, and an arc-shaped side groove is opened on the side of the arc-shaped plate one close to the arc-shaped plate two, a negative pole magnet is arranged inside the arc-shaped side groove, and the negative pole magnet is fixedly connected to the arc-shaped plate one.

[0014] Preferably, the estimation structure includes a sampling groove and three supporting circular grooves 2, wherein the sampling groove and the supporting circular grooves 2 are both opened on the side of the arc plate 1 away from the arc plate 2, and an internal groove is provided at the bottom of the sampling groove, and the internal groove is formed on the arc plate 1.

[0015] Preferably, the estimation structure includes four supporting round rods 2, and the four supporting round rods 2 are fixedly mounted on a fixing frame 2. An installation circular groove is provided at one end of the supporting round rod 2 aligned with the sampling groove, and an air pressure sensor is arranged inside the installation circular groove. An air storage airbag is fixedly sleeved on the outer side of the supporting round rod 2, and the air pressure sensor probe extends into the air storage airbag.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present application, the arc plate 2 enters the arc groove to fill the arc groove, so that the internal shape of the impeller box is restored. When the automobile engine water pump is in normal working condition, the force applied to the arc plate 2 is not enough to cause the spring-type telescopic rod to shrink and shake, and most of the detection structure is hidden inside the equipment groove to prevent the retro-reflective photoelectric sensor and the hydraulic sensor from being contaminated by impurities in the water transported by the automobile engine water pump, thereby ensuring the accuracy of the working detection of the retro-reflective photoelectric sensor and the hydraulic sensor, and at the same time reducing the occupation of the vehicle body space by the detection structure, and the setting of the detection structure will not affect the normal operation of the automobile engine water pump, thereby ensuring the stability of the operation of the automobile engine water pump.

[0018] 2. When the pressure value detected by the pressure sensor of the present application reaches a preset value, the telescopic pneumatic cylinder 2 is controlled to contract, driving the arc plate 1 to move upward through the arc groove and return to the inside of the equipment groove, so that the arc plate 1 is aligned with the arc plate 2. At this time, the vehicle control system can judge whether the impeller disc part and the impeller blades fixedly installed on the impeller disc part have been displaced according to the value changes detected by the pressure sensor, which is helpful to judge the cause of the automobile engine water pump failure and to fully understand the working status of the automobile engine water pump.

[0019] 3. When there are impurities inside the internal groove in the present application, the air storage airbag will shrink and the air pressure in the inner cavity will increase. An air pressure sensor is arranged inside the mounting circular groove opened on one side of the supporting round rod. The air pressure sensor probe extends into the air storage airbag to detect the air pressure change inside the air storage airbag. According to the detection result of the air pressure sensor, the number of impurities obtained in the sampling work can be estimated, the number of impurities attached to the outside of the impeller disk can be estimated, and the state of the impeller disk in the automobile engine water pump can be judged. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the automobile engine water pump in the present invention;

[0022] Figure 3 It is a structural schematic diagram of the mounting seat in the present invention;

[0023] Figure 4 It is a partial structural schematic diagram of the mounting seat and the impeller box in the present invention;

[0024] Figure 5 It is a schematic diagram of the local structure of the impeller blades in the present invention;

[0025] Figure 6 It is a structural schematic diagram of the transmission frame 1 in the present invention;

[0026] Figure 7 It is a structural schematic diagram of the guide block in the present invention;

[0027] Figure 8 Schematic diagram of the structure of the curved plate 1 in the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the arc plate 2 in the present invention;

[0029] Fig.10 It is a structural schematic diagram of the electromagnet in the present invention;

[0030] Fig.11 It is a schematic diagram of the structure of the supporting round rod 2 in the present invention;

[0031] Fig.12 It is a structural schematic diagram of the fixing frame 2 in the present invention;

[0032] Fig.13 It is a schematic diagram of the local structure of the impeller box in the present invention;

[0033] Fig.14 It is a schematic diagram of the partial structure of the mounting seat in the present invention.

[0034] Numbers in the figure: 1. Automobile engine water pump; 11. Driving motor; 12. Transmission shaft; 13. Mounting seat; 14. Impeller box; 15. Water inlet pipe; 16. Water outlet pipe; 17. Mounting nut; 18. Impeller disc; 19. Impeller blades; 110. Mounting slot; 111. Reflector; 112. Arc slot; 2. Detection structure; 21. Equipment slot; 22. Sealing door panel; 23. Telescopic pneumatic cylinder 1; 24. Transmission frame 1; 25. Transmission frame 2; 26. Telescopic rod; 27. Arc plate 1; 28. Arc plate 2; 29. ​​Guide block; 210. Limit guide rail; 211. Fixed Frame one; 212, arc-shaped side groove one; 213, positive magnet; 214, arc-shaped side groove; 215, negative magnet; 216, retro-reflective photoelectric sensor; 217, hydraulic sensor; 218, electromagnet; 219, telescopic pneumatic cylinder two; 220, pressure sensor; 221, spring-loaded telescopic rod; 222, supporting circular groove one; 223, supporting circular rod one; 224, supporting circular groove two; 225, sampling groove; 226, supporting circular rod two; 227, air storage airbag; 228, mounting circular groove; 229, air pressure sensor; 230, internal groove; 231, fixing frame two. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0036] Example: Figure 1-Figure 14As shown, the present invention provides a technical solution for a timing detection structure for blade wear displacement built into an automobile engine water pump, including an automobile engine water pump 1, the automobile engine water pump 1 includes a mounting seat 13 and a plurality of impeller blades 19, one side of one impeller blade 19 is fixedly mounted with a reflector 111, a detection structure 2 is arranged on one side above the reflector 111, the detection structure 2 includes an equipment slot 21, a sealing door plate 22, a telescopic pneumatic cylinder 1 23, a telescopic pneumatic cylinder 2 219 and a fixing frame 231, a transmission frame 1 24 is fixedly mounted on the piston end of the telescopic pneumatic cylinder 1 23, and both ends of the transmission frame 1 24 are fixedly mounted A transmission frame 25 is installed, and telescopic rods 26 are fixedly installed at both ends of the transmission frame 25. An arc plate 28 is fixedly connected between the piston ends of the two telescopic rods 26 away from the telescopic pneumatic cylinder 1 23, and an arc plate 27 is fixedly connected between the piston ends of the other two telescopic rods 26. A regressive reflective photoelectric sensor 216 and a hydraulic sensor 217 are fixedly inserted on the arc plate 1 27. An electromagnet 218, a pressure sensor 220 and a plurality of spring-type telescopic rods 221 are arranged between the telescopic pneumatic cylinder 219 and the arc plate 1 27. An estimation structure is arranged on the side of the arc plate 1 27 away from the arc plate 28.

[0037] Specifically, the automobile engine water pump 1 is composed of a drive motor 11, a transmission shaft 12, an impeller box 14, an impeller disc 18, a mounting seat 13, a plurality of impeller blades 19 and the like. The transmission shaft 12 is fixedly mounted on the output end of the drive motor 11. The working drive motor 11 outputs power through the transmission shaft 12. The impeller disc 18 is arranged inside the impeller box 14. One end of the transmission shaft 12 extends to the inside of the impeller box 14 and passes through the impeller disc 18. Figure 4 As shown, the transmission shaft 12 rotatably mounted with the impeller box 14 through a sealed bearing drives the impeller disc 18 to rotate inside the impeller box 14, and multiple impeller blades 19 fixedly mounted on the impeller disc 18 rotate. A water inlet pipe 15 for water intake is fixedly connected to the bottom of the mounting seat 13, and a water outlet pipe 16 for water discharge is fixedly connected to one side of the mounting seat 13, and one end of the water inlet pipe 15 and the water outlet pipe 16 both extend to the inside of the impeller box 14 and communicate with the impeller box 14. The specific working principle of the automobile engine water pump 1 is a well-known technology and will not be repeated here.

[0038] A plurality of mounting nuts 17 are fixedly mounted on the outside of the mounting seat 13 and the outside of the driving motor 11. The mounting nuts 17 with a threaded structure inside are used for mounting the automobile engine water pump 1 and the vehicle body. A mounting groove 110 is provided on one of the impeller blades 19. A reflector 111 is provided inside the mounting groove 110 and is fixedly connected to the impeller blade 19. The reflector 111 moves synchronously with the impeller blade 19, and the shape of the outer side of the reflector 111 is the same as the shape of the positions of the remaining impeller blades 19 where the mounting groove 110 is not provided. The setting of the reflector 111 will not affect the normal operation of the impeller blades 19, thereby ensuring the stability of the operation of the impeller composed of the impeller disc 18 and the plurality of impeller blades 19.

[0039] An arc groove 112 is opened on the impeller box 14, and an arc plate 27 fixedly inserted with a regressive reflective photoelectric sensor 216 and a hydraulic sensor 217 is arranged inside the arc groove 112. The arc plate 27, the regressive reflective photoelectric sensor 216 and the hydraulic sensor 217 are arranged on one side of the impeller box 14, and are all set to curved surfaces. At this time, the arc plate 27, the regressive reflective photoelectric sensor 216 and the hydraulic sensor 217 will not affect the overall shape of the inner cavity of the impeller box 14, so that the inside of the impeller box 14 is in a normal working state.

[0040] In the present application, the operation of the automobile engine water pump 1 and the detection structure 2 is controlled by the vehicle's own control system. This is an application of the prior art and will not be elaborated here.

[0041] The automobile engine water pump 1 is controlled to work according to the preset power, and the regressive reflective photoelectric sensor 216 and the hydraulic sensor 217 are controlled to work. The working hydraulic sensor 217 detects the fluctuation of the hydraulic pressure inside the impeller box 14, and collects the changes of the hydraulic pressure inside the impeller box 14 with time during the time when the automobile engine water pump 1 works according to a certain power; and the detection path of the working regressive reflective photoelectric sensor 216 is located on the rotation path of the reflective plate 111; since the shape and number of the impeller blades 19 are fixed, the distance between the two impeller blades 19 is fixed, the rotation speed of the impeller disc 18 is fixed, and the relative distance between the regressive reflective photoelectric sensor 216 and the hydraulic sensor 217 is unchanged, the time when the corresponding impeller blade 19 moves to the side of the hydraulic sensor 217 can be calculated according to the time when the regressive reflective photoelectric sensor 216 detects the reflective plate 111 twice; the wear of the impeller blade 19 can be judged and calculated according to the change of the hydraulic pressure value detected by the hydraulic sensor 217 and the time point of the change of the impeller blade 19 moving to the side of the hydraulic sensor 217, and data is provided for judging the health of the impeller composed of the impeller disc 18 and the plurality of impeller blades 19;

[0042] Moreover, the regressive reflective photoelectric sensor 216 is a regressive reflective photoelectric sensor, which uses the reflection principle to complete the photoelectric control function. When the reflective plate 111 is blocked by impurities, the intensity of the feedback light signal received by the regressive reflective photoelectric sensor 216 changes. An average value can be calculated based on the intensity of the feedback light signal received by the regressive reflective photoelectric sensor 216 during the working time of the automobile engine water pump 1. The average value is compared with the feedback light signal intensity value in the initial state of the reflective plate 111 and the regressive reflective photoelectric sensor 216, and the impurity adhesion condition on the outside of the impeller blades 19 is calculated and determined. It can be determined whether the working problem of the automobile engine water pump 1 is caused by the wear of the impeller blades 19 or by impurities in the water adhering to the impeller blades 19, so as to facilitate the preparation of targeted maintenance plans.

[0043] After the automobile engine water pump 1 is working, the telescopic pneumatic cylinder 219 whose outer wall is fixedly connected to the mounting seat 13 is controlled to work. Since the piston end of the telescopic pneumatic cylinder 219 is fixedly connected to the pressure sensor 220, the telescopic pneumatic cylinder 219 pushes the pressure sensor 220 to move inside the impeller box 14. The outer walls of the plurality of spring-type telescopic rods 221 are fixedly connected to the pressure sensor 220, and the piston ends of the spring-type telescopic rods 221 are fixedly connected to the electromagnet 218. At this time, the electromagnet 2 The electromagnet 218 works by adsorbing and fixing the iron arc plate 27 together, and the electromagnet 218 drives the arc plate 27 to move synchronously. At this time, the automobile engine water pump 1 is in a stopped state, so the electromagnet 218 and the arc plate 27 have little resistance to the movement of the impeller box 14, which is far from reaching the force to shrink the spring-type telescopic rod 221. At this time, the arc plate 27 will not be blocked from moving to the impeller disc 18 inside the impeller box 14, and the telescopic pneumatic cylinder 219 controls the movement of the arc plate 27;

[0044] If the impeller disc 18 does not move, after the arc plate 127 moves to the preset position, the telescopic air cylinder 219 shrinks a distance and then pauses. At this time, the bottom surface of the arc plate 127 is aligned with the outer side of the impeller disc 18. Then the telescopic air cylinder 123 works to shrink and pull the transmission frame 124. The transmission frame 124 drives the arc plate 127 to move through the transmission frame 25 and the telescopic rod 26. The connection position of the telescopic rod 26 and the arc plate 127 is located at the position where the arc plate 127 is far away from the impeller disc 18. Even if the telescopic rod 26 passes through the arc groove 112 at this time, the arc plate 127 is not moved. Plate 1 27 can also move a distance to the outside of the impeller disc 18. A sampling groove 225 is formed at the bottom of one side of the arc plate 1 27. Some impurities on the outside of the impeller disc 18 will enter the sampling groove 225 for sampling. Then the telescopic pneumatic cylinder 1 23 works and extends to restore the arc plate 1 27 to the state of being aligned with the arc groove 112. Then the telescopic pneumatic cylinder 2 219 contracts, and the telescopic pneumatic cylinder 2 219 drives the arc plate 1 27 to move up through the arc groove 112 and return to the inside of the equipment groove 21, so that the arc plate 1 27 is aligned with the arc plate 2 28.

[0045] If the impeller disc portion 18 is displaced, the impeller disc portion 18 is partially located on the movement path of the arc plate 1 27, which will block the movement of the arc plate 1 27. When the telescopic pneumatic cylinder 219 continues to extend, the spring-type telescopic rod 221 is subjected to a large force, which will cause the spring-type telescopic rod 221 to contract, and the pressure sensor 220 will contact the electromagnet 218, and the pressure value detected by the pressure sensor 220 will increase. When the pressure value detected by the pressure sensor 220 reaches a preset value, the telescopic pneumatic cylinder 219 is controlled to contract, driving the arc plate 1 27 to move up through the arc groove 112 and return to the inside of the equipment groove 21, so that the arc plate 1 27 is aligned with the arc plate 28. At this time, the vehicle control system can judge whether the impeller disc portion 18 and the impeller blades 19 fixedly installed on the impeller disc portion 18 are displaced according to the value change detected by the pressure sensor 220, which is conducive to judging the cause of the failure of the automobile engine water pump 1 and comprehensively understanding the working state of the automobile engine water pump 1.

[0046] After the arc plate 1 27 is aligned with the arc plate 2 28, since the arc plate 2 28 is provided with an arc side groove 1 212 on one side close to the arc plate 1 27, Fig. 9 As shown, the positive pole magnet 213 disposed inside the arc-shaped side groove 1 212 is fixedly connected to the arc-shaped plate 28, and an arc-shaped side groove 214 is provided on one side of the arc-shaped plate 1 27 close to the arc-shaped plate 28. Fig.10 As shown, the negative pole magnet 215 disposed inside the arc-shaped side groove 214 is fixedly connected to the arc-shaped plate 1 27. After the arc-shaped plate 1 27 is aligned with the arc-shaped plate 28, the positive pole magnet 213 and the negative pole magnet 215 are fixed together by magnetic attraction, so that the arc-shaped plate 1 27 and the arc-shaped plate 28 move synchronously.

[0047] Then, the telescopic air cylinder 1 23 is controlled to contract and drive the transmission frame 1 24. The piston end of the telescopic air cylinder 1 23 fixedly mounted with the mounting seat 13 is fixedly mounted with the transmission frame 1 24, and both ends of the transmission frame 1 24 are fixedly mounted with the transmission frame 2 25. Figure 6 As shown, telescopic rods 26 are fixedly installed at both ends of each transmission frame 25, and the telescopic rods 26 can be telescopic. An arc plate 28 is fixedly connected between the piston ends of the two telescopic rods 26 away from the telescopic pneumatic cylinder 1 23, and an arc plate 1 27 is fixedly connected between the piston ends of the other two telescopic rods 26. Under the action of the telescopic rods 26 that can be telescoped, the vertical relative position between the arc plate 1 27 and the arc plate 2 28 can be changed. Under the action of the transmission frame 25, the left-right relative position between the arc plate 1 27 and the arc plate 2 28 cannot be changed.

[0048] Therefore, the transmission frame 1 24 drives the telescopic rod 26 through the transmission frame 2 25, and the fixed frame 231 is fixedly sleeved on the outer wall of the telescopic pneumatic cylinder 1 23, and the outer wall of the telescopic pneumatic cylinder 1 23 is fixedly installed together with the mounting seat 13, so the position of the fixed frame 231 cannot move, the positions of the two fixed frames 1 211 fixedly connected to the outer side of the fixed frame 231 cannot move, and the limiting guide rails 210 fixedly connected to the tops of the two fixed frames 1 211 cannot move. Figure 6 and the telescopic rod 26 is fixedly connected to the top with two guide blocks 29 for limiting the guide, such as Figure 7 As shown, the guide block 29 is arranged inside the limiting guide rail 210 adjacent to the same side, so the movement of the guide block 29 and the guide block 29 fixing the telescopic rod 26 is limited and guided by the limiting guide rail 210, so that the movement of the arc plate 1 27 and the arc plate 28 is guided and limited. When the telescopic pneumatic cylinder 1 23 works and contracts, the electromagnet 218 stops working, and the arc plate 1 27 loses the fixed limit of the electromagnet 218. Therefore, at this time, the arc plate 1 27 and the arc plate 28 move synchronously toward the telescopic pneumatic cylinder 1 23. When the arc plate 28 is aligned with the arc groove 112, the telescopic pneumatic cylinder 1 23 stops working;

[0049] Subsequently, the telescopic pneumatic cylinder 219 and the electromagnet 218 are controlled to work. The electromagnet 218 is fixed together with the iron arc plate 28 by magnetic force. The telescopic pneumatic cylinder 219 extends and pushes the electromagnet 218 and the arc plate 28 downward, so that the arc plate 28 enters the arc groove 112 to fill the arc groove 112, so that the internal shape of the impeller box 14 is restored. When the automobile engine water pump 1 is in normal working state, the force exerted on the arc plate 28 is not enough to cause the spring-type telescopic rod 221 to shrink and shake, and most of the structure of the detection structure 2 is hidden in the equipment slot 21, so as to avoid the retro-reflective photoelectric sensor 216 and the hydraulic sensor 217 from being attached and contaminated by impurities in the water transported by the automobile engine water pump 1, thereby ensuring the accuracy of the working detection of the retro-reflective photoelectric sensor 216 and the hydraulic sensor 217, and at the same time reducing the occupation of the vehicle body space by the detection structure 2, and the setting of the detection structure 2 will not affect the normal operation of the automobile engine water pump 1, thereby ensuring the stability of the operation of the automobile engine water pump 1.

[0050] If sampling is performed during the detection of the automobile engine water pump 1 by the detection structure 2, during the movement of the arc plate 1 27 toward the telescopic pneumatic cylinder 1 23, since the sampling groove 225 and the supporting circular groove 224 in the estimation structure are both provided on the side of the arc plate 1 27 away from the arc plate 2 28, as shown in FIG. Fig.12 As shown, the four supporting round rods 226 in the estimated structure are all fixedly mounted on the fixing frame 231. During the movement of the arc plate 1 27, three of the supporting round rods 226 are inserted into the three supporting round grooves 224 respectively. Since the supporting round grooves 224 are located at a higher position, impurities outside the impeller disc 18 will not enter the supporting round grooves 224 during the sampling process.

[0051] An inner groove 230 is provided at the bottom of the sampling groove 225, and the inner groove 230 is formed on the arc plate 27. Fig.11 As shown, under the action of gravity and the second supporting round rod 226, the impurities inside the sampling groove 225 are collected into the inner groove 230. When the air storage bag 227 fixedly mounted on the outer side of the second supporting round rod 226 entering the sampling groove 225 enters the inner groove 230, the air storage bag 227 will shrink and the air pressure in the inner cavity will increase due to the presence of impurities inside the inner groove 230. An air pressure sensor 229 is arranged inside the mounting round groove 228 opened on one side of the second supporting round rod 226. The probe of the air pressure sensor 229 extends into the air storage bag 227 to detect the change of air pressure inside the air storage bag 227. According to the detection result of the air pressure sensor 229, the amount of impurities obtained in the sampling work can be estimated, the amount of impurities attached to the outer side of the impeller disc 18 can be estimated, and the state of the impeller disc 18 in the automobile engine water pump 1 can be judged.

[0052] In addition, a sealing door panel 22 is arranged inside the equipment slot 21 and fixedly connected to the mounting seat 13 to seal the equipment slot 21. A plurality of supporting circular grooves 222 are provided on the side of the arc plate 28 away from the arc plate 1 27, and one end of a supporting round rod 223 provided inside each of the plurality of supporting circular grooves 222 is fixedly connected to the sealing door panel 22. Before the arc plate 28 is aligned with the arc slot 112, the plurality of supporting round rods 223 support the arc plate 28 to ensure the stability of the movement of the arc plate 28, so that the arc plate 28 and the mounting seat 13 are always in a close contact state; during the movement of the arc plate 27 after entering the equipment slot 21, before the arc plate 27 is aligned with the arc slot 112, the movement of the arc plate 27 is supported by the three supporting round rods 226, so that the arc plate 27 and the mounting seat 13 are always in a close contact state.

[0053] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A timing detection structure for blade wear displacement in a water pump of an automobile engine, comprising a water pump of an automobile engine (1), characterized in that: The automobile engine water pump (1) comprises a mounting seat (13), an impeller box (14) and a plurality of impeller blades (19), wherein a reflector (111) is fixedly mounted on one side of one of the impeller blades (19), a detection structure (2) is arranged on one side above the reflector (111), the detection structure (2) comprises an equipment slot (21), a sealing door plate (22), a telescopic pneumatic cylinder 1 (23), a telescopic pneumatic cylinder 2 (219) and a fixing frame 2 (231), a transmission frame 1 (24) is fixedly mounted on a piston end of the telescopic pneumatic cylinder 1 (23), a transmission frame 2 (25) is fixedly mounted on both ends of the transmission frame 1 (24), and a telescopic rod (26) is fixedly mounted on both ends of the transmission frame 2 (25), and a telescopic rod (26) is fixedly mounted away from the telescopic cylinder 1 (23). An arc plate 2 (28) is fixedly connected between the piston ends of the two telescopic rods (26) of the retractable pneumatic cylinder 1 (23); an arc plate 1 (27) is fixedly connected between the piston ends of the other two telescopic rods (26); a regressive reflective photoelectric sensor (216) and a hydraulic sensor (217) are fixedly inserted on the arc plate 1 (27); an electromagnet (218), a pressure sensor (220) and a plurality of spring-type telescopic rods (221) are arranged between the telescopic pneumatic cylinder 2 (219) and the arc plate 1 (27); an estimation structure is arranged on a side of the arc plate 1 (27) away from the arc plate 2 (28); the estimation structure estimates the amount of impurities attached to the outer side of the impeller disc (18) to judge the state of the impeller disc (18); The impeller box (14) is provided with an arc-shaped groove (112), the arc-shaped plate 1 (27) is arranged inside the arc-shaped groove (112), and the arc-shaped plate 1 (27), the regression reflection type photoelectric sensor (216) and the hydraulic pressure sensor (217) are arranged on one side inside the impeller box (14) and are all configured as curved surfaces; The tops of the four telescopic rods (26) are fixedly connected to two guide blocks (29); the second fixing frame (231) is fixedly sleeved on the outside of the telescopic pneumatic cylinder (23); the outer side of the second fixing frame (231) is fixedly connected to two first fixing frames (211); the tops of the two first fixing frames (211) are fixedly connected to the limiting guide rail (210); and the guide blocks (29) are arranged inside the limiting guide rail (210) on the same side.

2. The internal blade wear displacement timing detection structure of the automobile engine water pump according to claim 1 is characterized in that: The automobile engine water pump (1) comprises a driving motor (11), a transmission shaft (12) and an impeller disc portion (18), wherein the transmission shaft (12) is fixedly mounted on the output end of the driving motor (11), one end of the transmission shaft (12) extends into the interior of an impeller box (14) and penetrates the impeller disc portion (18), a plurality of impeller blades (19) are fixedly mounted on the impeller disc portion (18), and the impeller disc portion (18) is arranged inside the impeller box (14).

3. The internal blade wear displacement timing detection structure of the automobile engine water pump according to claim 2 is characterized in that: A water inlet pipe (15) is fixedly connected to the bottom of the mounting seat (13), and a water outlet pipe (16) is fixedly connected to one side of the mounting seat (13); one end of the water inlet pipe (15) and the water outlet pipe (16) both extend into the interior of the impeller box (14); a plurality of mounting nuts (17) are fixedly mounted on the outside of the mounting seat (13) and the outside of the drive motor (11); a mounting groove (110) is formed on one of the impeller blades (19); and the reflector (111) is disposed inside the mounting groove (110) and fixedly connected to the impeller blade (19).

4. The internal blade wear displacement timing detection structure of the automobile engine water pump according to claim 1, characterized in that: The outer wall of the second telescopic pneumatic cylinder (219) is fixedly connected to the mounting seat (13), the piston end of the second telescopic pneumatic cylinder (219) is fixedly connected to the outer wall of the pressure sensor (220), the outer walls of the plurality of spring-type telescopic rods (221) are fixedly connected to the pressure sensor (220), and the piston ends of the spring-type telescopic rods (221) are fixedly connected to the electromagnet (218).

5. The internal blade wear displacement timing detection structure of the automobile engine water pump according to claim 1, characterized in that: A plurality of supporting circular grooves (222) are provided on a side of the arc plate (28) away from the arc plate (27), and a supporting circular rod (223) is provided inside each of the plurality of supporting circular grooves (222). One end of the supporting circular rod (223) is fixedly connected to a sealing door plate (22), and the sealing door plate (22) is arranged inside the equipment slot (21) and fixedly connected to the mounting seat (13).

6. The internal blade wear displacement timing detection structure of the automobile engine water pump according to claim 1, characterized in that: The arc-shaped plate 2 (28) is provided with an arc-shaped side groove 1 (212) on one side close to the arc-shaped plate 1 (27), a positive pole magnet (213) is arranged inside the arc-shaped side groove 1 (212), and the positive pole magnet (213) is fixedly connected to the arc-shaped plate 2 (28); the arc-shaped plate 1 (27) is provided with an arc-shaped side groove (214) on one side close to the arc-shaped plate 2 (28), a negative pole magnet (215) is arranged inside the arc-shaped side groove (214), and the negative pole magnet (215) is fixedly connected to the arc-shaped plate 1 (27).

7. The internal blade wear displacement timing detection structure of the automobile engine water pump according to claim 1, characterized in that: The estimation structure comprises a sampling groove (225) and three supporting circular grooves (224); the sampling groove (225) and the supporting circular grooves (224) are both arranged on a side of the arc-shaped plate (27) away from the arc-shaped plate (28); an internal groove (230) is arranged at the bottom of the sampling groove (225); and the internal groove (230) is formed on the arc-shaped plate (27).

8. The internal blade wear displacement timing detection structure of the automobile engine water pump according to claim 7, characterized in that: The estimation structure comprises four supporting round rods (226), the four supporting round rods (226) are all fixedly mounted on a fixing frame (231), one end of the supporting round rod (226) aligned with the sampling groove (225) is provided with a mounting circular groove (228), an air pressure sensor (229) is arranged inside the mounting circular groove (228), an air storage bag (227) is fixedly sleeved outside the supporting round rod (226), and a probe of the air pressure sensor (229) extends into the air storage bag (227).

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