Quick measuring device for deflection of air valve

Abstract

The utility model discloses a rapid measuring device for the sinkage of a valve, which relates to the technical field of engine detection, is used for detecting the sinkage distance of a valve on the surface of a cylinder, and comprises a mounting seat, a measuring device, a measuring device and a control device, and is characterized in that the mounting seat is internally provided with a distance measuring sensor for detecting the sinkage of the valve; the protection assembly is arranged at the bottom of the mounting base and can protect the detection end of the distance measuring sensor; when the zero calibration plate moves towards the direction where the storage seat is located, the through hole formed in the zero calibration plate corresponds to the distance measuring sensor up and down, and the distance measuring sensor can penetrate through the through hole. According to the rapid measuring device for the valve sinkage, the accommodating seat is adopted as a carrier, the piston cavity is formed in the accommodating seat, and the zero calibration plate is driven by the guide rod positioned in the piston cavity to perform opening and closing movement by exhausting and inflating the accommodating seat, so that the zero calibration plate covers the end part of the distance measuring sensor; and the end part of the distance measuring sensor is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine detection technical field, especially a valve subsidence amount quick measuring device. BACKGROUND

[0002] In an internal combustion engine, the valve needs to be opened and closed periodically during the working process to control the intake and exhaust process. The valve is one of the most important components in the internal combustion engine, which controls the intake and exhaust process and plays a key role in the performance and combustion efficiency of the engine. The valve subsidence amount refers to the distance moved by the valve from its closed position to its open position, which is usually the distance between the valve head (also known as the valve top) and the cylinder head bottom surface. When the valve is closed, there is a certain gap between the valve head and the cylinder head bottom surface, which is the subsidence amount of the valve. As a key indicator of cylinder operation, the valve subsidence amount needs to be accurately measured.

[0003] At present, the Chinese patent with patent application number "CN201220428438.6" discloses a valve subsidence amount measuring device, which includes a table frame with a set span. The two ends of the table frame can be placed on the two sides of the cylinder head respectively, and the upper surface of the table frame is a table seat surface with multiple insertion holes uniformly arranged thereon. The side surface of the table frame is provided with threaded fixing holes corresponding to the multiple insertion holes. The flatness of the table seat surface is ≤0.005mm. A fastening bolt is arranged in the threaded fixing hole, and two micrometers are arranged in the two insertion holes respectively. Although this device can measure two valves at the same time to improve the measurement efficiency, the micrometers are always exposed during use, which may cause the end of the micrometer to collide with other objects. When the detection end of the micrometer collides with other objects, the detection accuracy and stability of the micrometer will be affected. At this time, the accuracy can only be restored by replacing the micrometer, which not only increases the maintenance cost, but also prolongs the measurement time and reduces the work efficiency. In addition, the exposed design of the micrometer also increases the safety risk of the operator, which is not conducive to long-term stable use.

[0004] However, during the implementation of the above technical solution, at least the following technical problems are found:

[0005] The safety is poor and the stability of the adhesion between the device and the cylinder cannot be ensured. When the existing valve sinking amount detection equipment is used, the operator mainly grabs the micrometer and corresponds the micrometer with the valve, then adjusts the micrometer to extrude the micrometer to the direction of the valve until the valve stops shrinking, and records the value detected by the micrometer at this time, which is the sinking amount of the valve. However, in this process, since the micrometer is always exposed, the operator needs to be highly concentrated, and any carelessness may cause damage to the micrometer or measurement error, which seriously affects the convenience and safety of the equipment use. Secondly, since the micrometer is installed on the docking seat, the docking seat needs to be closely attached to the surface of the cylinder during the detection of the valve sinking amount, otherwise the detection result will be deviated (the micrometer is inclined), so that the result obtained does not have reference value, which not only needs to be re-measured, but also affects the safety of the subsequent assembly and test of the engine. In addition, in order to realize mechanized production and detection, the micrometer can also be grabbed by a mechanical hand instead of the operator to measure and operate. With the uncertainty brought by manual monitoring can be solved, but since the initial position of the micrometer is affected by various factors such as temperature change and mechanical wear during detection, deviation occurs. If zero adjustment is not performed, the accuracy of the measurement result will be affected, and deviation will inevitably occur. At this time, manual zero adjustment is needed. Since the error of the micrometer and the occurrence time of the error are unpredictable, and the problem can only be solved by regular calibration, it is impossible to determine whether the micrometer needs to be corrected during detection, and the problem cannot be found in time when the micrometer is found to be wrong, so that the detection result may have an error, which seriously affects the accuracy of the detection result. Therefore, we provide a kind of valve sinking amount fast measuring device. Practical new type content

[0006] (I) The technical problem solved

[0007] In view of the shortcomings of the prior art, the present application provides a kind of valve sinking amount fast measuring device, solve the technical problem that the safety is poor and the stability of the adhesion between the device and the cylinder cannot be ensured when the existing valve sinking amount detection equipment is used.

[0008] (II) Technical scheme

[0009] To achieve the above purpose, the present application is realized by the following technical scheme:

[0010] A kind of valve sinking amount fast measuring device, for detecting the sinking distance of the valve on the surface of cylinder, the measuring device includes:

[0011] Mounting seat, its inside is installed with the ranging sensor for detecting the sinking amount of valve;

[0012] The protection assembly is arranged at the bottom of the mounting base and can protect the detection end of the distance measuring sensor.

[0013] The protection assembly comprises a receiving seat connected to the bottom of the mounting base, and both ends of the receiving seat are provided with zero calibration plates, the zero calibration plates are connected with guide rods inserted into the receiving seat, and the zero calibration plates correspond to the end of the distance measuring sensor.

[0014] When the zero calibration plates move towards the receiving seat, the through holes in the zero calibration plates correspond to the distance measuring sensor up and down, and the distance measuring sensor can pass through the through holes.

[0015] Preferably, a gas cavity is arranged at the center of the receiving seat, the gas cavity corresponds to an air charging connector arranged outside the receiving seat, a piston cavity is arranged inside the receiving seat and close to the end of the guide rod, a piston disc is connected to one end of the guide rod inserted into the receiving seat, and the piston disc is attached to the inner wall of the piston cavity.

[0016] When the air charging connector is exhausted, the guide rod moves towards the receiving seat under the action of negative pressure.

[0017] Conversely, when the air charging connector is charged, the guide rod moves away from the receiving seat under the action of air pressure.

[0018] Preferably, a limiting disc is arranged at one end of the piston cavity communicated with the gas cavity, a gas hole is arranged at the center of the limiting disc, and the gas cavity and the piston cavity are communicated through the gas hole.

[0019] When the piston disc is attached to the limiting disc, the through holes in the zero calibration plates correspond to the distance measuring sensor up and down.

[0020] Preferably, a side plate is connected to one end of the guide rod extending out of the receiving seat, the side plate is connected to the zero calibration plate, the zero calibration plate is attached to the bottom of the receiving seat, and the two are slidably connected, and the bottom surface of the zero calibration plate is flush with the bottom surface of the mounting base.

[0021] Preferably, the mounting base comprises a butt joint seat in the shape of a Chinese character “fang”, the receiving seat is arranged in the opening of the butt joint seat, and the zero calibration plates at both ends of the receiving seat can slide in the opening of the butt joint seat.

[0022] The top of the butt joint seat is provided with two parallel protection cylinders, a handle is connected between the two protection cylinders, the distance measuring sensor is inserted into the protection cylinder, and the distance measuring sensor can slide up and down in the protection cylinder.

[0023] Preferably, a suction pipe is inlaid in the butt joint seat, one end of the suction pipe extends to the bottom surface of the butt joint seat, the other end extends to be communicated with an air pipe connector, and a sealing ring is attached to the edge position of the end.

[0024] Wherein, when the ranging sensor corresponds to the air valve on the cylinder, the adsorption pipe is attached to the cylinder, and the negative pressure generated by the exhaust of the inflation joint can adsorb the docking seat on the cylinder.

[0025] Preferably, the inflation joint is inlaid in the opening of the docking seat, and the inflation joint corresponds to the inflation joint of the top of the receiving seat, and when the receiving seat is connected with the docking seat, the inflation joint is inserted into the inflation joint.

[0026] Wherein, the inflation joint is in communication with the air cavity inside the receiving seat, and when the inflation joint is exhausted, the negative pressure can be transmitted to the adsorption pipe through the inflation joint.

[0027] Preferably, the device box is installed on the side of the docking seat facing the protective cylinder, and the zero adjustment assembly is installed in the device box.

[0028] Wherein, the zero adjustment assembly includes a threaded cylinder sleeved outside the ranging sensor, and the threaded cylinder is connected with the ranging sensor through threads, and the end of the threaded cylinder is provided with a ring-shaped gear disc, and the gear disc is engaged with the bevel gear on the self-locking motor, and the self-locking motor can drive the threaded cylinder to rotate.

[0029] When the threaded cylinder rotates, the ranging sensor can move up and down.

[0030] Preferably, the outer wall of the ranging sensor is symmetrically provided with two limiting blocks, and the limiting blocks are located in the sliding groove opened in the inner wall of the protective cylinder, and the extension direction of the sliding groove is consistent with the length direction of the protective cylinder.

[0031] Wherein, the limiting block and the sliding groove are matched to limit the ranging sensor to move up and down only, and cannot rotate.

[0032] Preferably, the top of the zero adjustment plate is provided with a guide groove, and each side wall of the guide groove is provided with a conductive strip, the extension direction of the guide groove is consistent with the movement path of the ranging sensor, and the end of the guide groove corresponds to the through hole.

[0033] Wherein, the two conductive strips are connected by a wire, and the wire is connected with a power supply and an indicator, when the end of the ranging sensor is inserted into the guide groove, the two conductive strips are attached to the end of the ranging sensor, and the power supply and the indicator form a passage.

[0034] (Three) beneficial effects

[0035] 1. By using a storage base as a carrier with a piston chamber inside, the storage base is evacuated and inflated, causing the guide rod inside the piston chamber to open and close the zeroing plate, thus covering and protecting the end of the distance sensor. Secondly, an adsorption tube is embedded inside the docking seat, indirectly connected to the piston chamber. Therefore, when the docking seat is in contact with the cylinder, a negative pressure (adsorption force) is generated, ensuring stable adsorption between the device and the cylinder. This effectively solves the technical problems of poor safety and inability to ensure stable contact between the device and the cylinder in existing valve deflection detection equipment. It achieves a tighter fit between the docking seat and the cylinder outer wall, while also protecting the end of the distance sensor, ensuring accurate detection results with less susceptibility to external influences, thus improving the stability of valve detection.

[0036] 2. When using a zeroing plate to protect the ranging sensor, it needs to cover the sensor's detection end. Therefore, a disc-shaped gear is installed outside the ranging sensor, meshing with a bevel gear at the end of a self-locking motor. When the self-locking motor is powered on, it moves the ranging sensor up and down, adjusting its position to achieve zeroing. Secondly, two parallel conductive strips are installed on the zeroing plate, connected by a wire. A power supply, resistor, and indicator light are connected in series on the wire. When the ranging sensor is inserted into the guide slot, the conductive strips make contact, forming a circuit, and the indicator light illuminates, indicating successful zeroing and ensuring measurement accuracy. Furthermore, the limit block and sliding groove design effectively prevents sensor misoperation, improves overall stability, and ensures a safe and reliable testing process. Attached Figure Description

[0037] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0038] Figure 1 This is an overall structural diagram of an embodiment of the present utility model;

[0039] Figure 2 This is one of the exploded schematic diagrams of the mounting base and protective components in the embodiments of this utility model;

[0040] Figure 3 This is the second exploded view of the mounting base and protective components in this embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of the movement state of the protective component in an embodiment of this utility model;

[0042] Figure 5For the protective assembly contraction in the embodiment of the utility model inside air path flow direction schematic diagram;

[0043] Figure 6 For the protective assembly expansion in the embodiment of the utility model inside air path flow direction schematic diagram;

[0044] Figure 7 For the structure diagram of the docking seat bottom in the embodiment of the utility model;

[0045] Figure 8 For the structure diagram of the zero adjustment assembly in the embodiment of the utility model;

[0046] Figure 9 For the movement state schematic diagram of the zero adjustment assembly in the embodiment of the utility model;

[0047] Figure 10 For the schematic diagram of the zero adjustment assembly in the embodiment of the utility model;

[0048] Figure 11 For the existing air valve subsidence measurement equipment schematic diagram.

[0049] Legend:

[0050] 11, docking seat;12, device box;13, protective cylinder;14, distance measuring sensor;15, sleeve;16, limit block;

[0051] 21, storage seat;22, side plate;23, zero adjustment plate;24, guide rod;25, through hole;

[0052] 31, air cavity;32, piston cavity;33, piston disc;34, limit disc;35, sealing ring;36, inflation connector;37, air pipe plug;38, air pipe connector;39, adsorption tube;

[0053] 41, threaded cylinder;42, toothed disc;43, bevel gear;44, self-locking motor;45, conductive strip. DETAILED DESCRIPTION

[0054] The embodiment of the application provides a valve sinking amount quick measuring device, and solves the technical problem of poor safety and inability to ensure the stability of the adhesion between the device and the cylinder in the use of the existing valve sinking amount detection equipment. In the use of the existing valve sinking amount detection equipment, the receiving seat is used as a carrier, a piston cavity is formed in the receiving seat, the guide rod in the piston cavity drives the zero calibration plate to open and close, thereby covering the end of the distance measuring sensor and protecting the end of the distance measuring sensor. In addition, the adsorption pipe is embedded in the docking seat and indirectly communicates with the piston cavity. Therefore, when the docking seat is adhered to the cylinder, negative pressure (adsorption force) is generated, so that the stable adsorption between the device and the cylinder is ensured, the tightness of the adhesion between the docking seat and the outer wall of the cylinder is realized, the end of the distance measuring sensor is protected, the detection result is ensured to be accurate, and the influence of the outside world is small. Therefore, the stability of the valve detection can be better.

[0055] Embodiment 1: The technical scheme in the embodiment of the application solves the technical problem of poor safety and inability to ensure the stability of the adhesion between the device and the cylinder in the use of the existing valve sinking amount detection equipment, and the general idea is as follows:

[0056] In view of the problems in the prior art, the utility model provides a valve sinking amount quick measuring device for detecting the sinking distance of the valve on the surface of the cylinder, which mainly adopts three parts: a mounting seat, a protection structure (i.e., a protection assembly) and a zero calibration structure (i.e., a zero calibration assembly).

[0057] The mounting seat mainly plays a supporting role and provides a bearing structure for the protection assembly and the zero calibration assembly. The distance measuring sensor 14 on the mounting seat is externally connected to a data display through a lead wire at the top, and devices capable of telescopic distance measurement such as a micrometer and a dial gauge can be used;

[0058] The protection structure is used for protecting the distance measuring sensor 14 on the mounting seat to avoid the risk caused by the exposure of the distance measuring sensor 14;

[0059] The zero calibration structure can cooperate with the protection assembly to calibrate the distance measuring sensor 14, so that manual zero calibration is not required, and zero calibration can be performed before each detection, thereby improving the stability and accuracy of detection and avoiding the influence of the detection result caused by zero calibration problems.

[0060] I. Mounting seat

[0061] A docking seat 11 in the shape of a "Fang" character is mainly used as a main body, the protection structure is located in the opening of the docking seat 11, and the zero calibration structure is arranged at the top of the docking seat 11 and located in the device box 12 at the top of the docking seat 11, such as Figure 1As shown, two mutually parallel protective cylinders 13 are mounted on the top of the docking seat 11, and a handle is connected between the two protective cylinders 13, which facilitates the grabbing operation of the staff and the mechanical arm, so that the use mode can be freely selected according to the needs, that is, manual / mechanical. The distance measuring sensor 14 is inserted into the interior of the protective cylinder 13. The handle is designed in accordance with ergonomics, which improves the operation comfort.

[0062] II. Protective structure

[0063] The protective assembly is divided into two parts, one is a zero calibration plate 23 capable of protecting the distance measuring sensor 14; the other is an adsorption pipe 39 capable of ensuring the stable adhesion of the docking seat 11 to the cylinder.

[0064] The zero calibration plate 23 is located at both ends of the storage seat 21 and can slide horizontally in the opening of the docking seat 11, as shown in Figure 5 and Figure 6 As shown, a gas cavity 31 is formed at the center of the storage seat 21, and the gas cavity 31 corresponds to and communicates with the gas charging connector 36 installed outside the storage seat 21, so that the air inside the gas cavity 31 can be extracted or inflated through the gas charging connector 36. By using the function and result of the existing pneumatic telescopic rod, two cylindrical guide rods 24 are inserted at both ends of the storage seat 21, one end of the guide rod 24 is connected with the side plate 22, and the side plate 22 is connected with the zero calibration plate 23, so that the movement of the zero calibration plate 23 can be driven by the guide rod 24;

[0065] The other end of the guide rod 24 is inserted into the interior of the storage seat 21, and the end is connected with a piston disc 33, which is located in a piston cavity 32, and the piston disc 33 is in close contact with the inner wall of the piston cavity 32, as shown in Figure 5 so that the pressure of the gas cavity 31 can be adjusted by inflation or air extraction, so that the piston disc 33 drives the guide rod 24 to move, thereby controlling the position of the zero calibration plate 23, so that it is aligned with the distance measuring sensor 14 up and down. At this time, the zero calibration plate 23 can effectively protect the distance measuring sensor 14, and ensure that it can work stably in various environments. At the same time, the design of the zero calibration plate 23 keeps it stable during movement, avoiding measurement errors caused by vibration, further improving the reliability and accuracy of the detection system. In order to avoid friction between the zero calibration plate 23 and the covered object (cylinder with air valve) during movement, the bottom surface of the zero calibration plate 23 is flush with the bottom surface of the docking seat 11, or the bottom surface of the zero calibration plate 23 is higher than the bottom surface of the docking seat 11, so that the bottom surface of the zero calibration plate 23 will not rub with the object.

[0066] Another point is the design of the adsorption tube 39, which is made of high-strength material to ensure a tight fit during docking. In order to save space, the adsorption tube 39 is placed in the docking seat 11, with one end extending to the bottom of the docking seat 11 and the other end extending to the opening of the docking seat 11 and connected to the air pipe joint 38 in the docking seat 11. Through the air pipe joint 38, it is indirectly connected to the external air source to realize the inflation and exhaust function of the adsorption tube 39, ensuring that the adsorption tube 39 can be firmly adsorbed during docking, preventing displacement between the air cylinder and the docking seat 11, thereby ensuring the stability and safety of the entire system.

[0067] In order to realize this function, the air extraction and inflation action is used during use by using the zero calibration plate 23, so the air pipe joint 38 corresponds to the air pipe plug 37 at the top of the storage seat 21. In this way, when the storage seat 21 is connected to the docking seat 11, the air pipe plug 37 is inserted into the air pipe joint 38. Therefore, the air pipe plug 37 communicates with the air cavity 31 inside the storage seat 21. When the inflation joint 36 exhausts, negative pressure can be transmitted to the adsorption tube 39 through the air pipe plug 37, making the adsorption tube 39 tightly adhere to the air cylinder, ensuring the docking accuracy.

[0068] In the specific implementation process, the first step is to place the docking seat 11 on the air cylinder, with the bottom of the docking seat 11 fitting the air cylinder at the edge of the air door, and the distance measuring sensor 14 at the bottom of the docking seat 11 corresponding to the air door above and below. Then, through the negative pressure generated by the exhaust of the inflation joint 36, the negative pressure is conducted along the air cavity 31 to the end of the adsorption tube 39, and the end of the adsorption tube 39 is fitted to the surface of the air cylinder, so the negative pressure can adsorb the docking seat 11 on the air cylinder.

[0069] The second step is that the end of the adsorption tube 39 is blocked, so when negative pressure is generated in the air cavity 31, the negative pressure can be transmitted to the piston cavity 32, making the piston disc 33 drive the guide rod 24 and the zero calibration plate 23 connected to the guide rod 24 to move together in the direction of the storage seat 21 until the piston disc 33 at the end of the guide rod 24 is fitted to the piston disc 33 at the other end of the piston cavity 32. A gas hole needs to be opened in the center of the limiting disc 34, so that the air cavity 31 and the piston cavity 32 can communicate through the gas hole, and air can flow freely between the air cavity 31 and the piston cavity 32. Moreover, when the piston disc 33 is fitted to the limiting disc 34, the through hole 25 on the zero calibration plate 23 corresponds to the distance measuring sensor 14 above and below. At this time, the distance measuring sensor 14 can pass through the through hole 25 and contact the air door on the air cylinder. Since the end of the distance measuring sensor 14 is fitted to the zero calibration plate 23 before measurement, the distance measured by the distance measuring sensor 14 needs to be removed from the thickness of the zero calibration plate 23. For example, the value measured by the distance measuring sensor 14 when measuring is 60mm, and the thickness of the zero calibration plate 23 is 2mm, so the actual sinking amount of the air door is 60-2=58mm.

[0070] Conversely, when the inflation joint 36 is inflated, the guide rod 24 drives the zero correction plate 23 to move away from the end of the receiving seat 21 under the action of air pressure. At this time, the zero correction plate 23 blocks the end of the front distance sensor 14 (the through hole 25 thereon is out of position with the front distance sensor 14), thereby protecting the end of the front distance sensor 14 from accidental impact or wear during movement, ensuring that the measurement accuracy of the distance sensor 14 is not affected. At the same time, this design can effectively prolong the service life of the distance sensor 14 and improve the reliability and stability of the entire system. In addition, no matter how the zero correction plate 23 moves, it is always located at the end of the front distance sensor 14, thereby achieving the effect of real-time protection.

[0071] Embodiment 2: Based on embodiment 1, the present embodiment provides a feasible solution for reducing the calibration difficulty of the distance sensor, and the general idea is as follows:

[0072] III. Zero correction structure

[0073] Since the zero correction plate 23 blocks the end of the distance sensor 14 when protecting the distance sensor 14, the zero correction plate 23 can be used as a calibration standard in turn, and only the thickness of the zero correction plate 23 needs to be deducted during subsequent calculation. In this way, even in a complex working environment, the calibration of the distance sensor 14 can be quickly and accurately completed, greatly improving the work efficiency and measurement accuracy. At the same time, this design simplifies the operation process, reduces maintenance costs, and provides a strong guarantee for the efficient operation of the equipment. The specific structure is as follows:

[0074] The driving structure (installed in the device box 12) is first a threaded cylinder 41 that is sleeved outside the distance sensor 14, and the threaded cylinder 41 is connected with the distance sensor 14 (and the sleeve 15 outside the distance sensor 14) through threads. The sleeve 15 is used to protect the distance sensor 14. In this way, when it is necessary to adjust the position of the distance sensor 14, only the threaded cylinder 41 needs to be rotated to accurately control the up and down movement of the sensor 14, ensuring that the relative position of the sensor 14 and the zero correction plate 23 always remains in the best state.

[0075] Second, the toothed disc 42 connected to the end of the threaded cylinder 41 is engaged with the conical gear 43 on the self-locking motor 44, so that the threaded cylinder 41 can be rotated by the self-locking motor 44 to realize the fine adjustment of the distance sensor 14. The stability and accuracy of the self-locking motor 44 ensure the reliability and consistency of the adjustment process, further improving the measurement accuracy of the distance sensor 14. In addition, the close cooperation between the threaded cylinder 41 and the toothed disc 42 effectively reduces mechanical wear and prolongs the service life of the device, laying a solid foundation for long-term stable operation.

[0076] Therefore, only by controlling the self-locking motor 44 to drive the threaded cylinder 41 to rotate, the distance measuring sensor 14 can be driven to move up and down, and the top of the zero calibration plate 23 is attached, so that the calibration is completed.

[0077] In order to enable timely detection and observation, and also to facilitate the conversion of the motion signal into an electrical signal, and to provide readable data for the later machine control, a strip-shaped guide groove is formed on the top of the zero calibration plate 23, and a conductive strip 45 is mounted on the inner wall of each side of the guide groove. Figure 10 As shown in the figure, the extension direction of the guide groove is consistent with the motion path of the distance measuring sensor 14, and the end of the guide groove corresponds to the through hole 25, so that the movement of the distance measuring sensor 14 can be accurately guided, and the distance measuring sensor 14 can be accurately moved to the position of the through hole 25, thereby realizing accurate calibration.

[0078] Then, a power supply and an indicator lamp are connected to the wire between the two conductive strips 45, so that when the end of the distance measuring sensor 14 is inserted into the guide groove, the two conductive strips 45 are attached, a path is formed between the power supply and the indicator lamp, the indicator lamp is turned on, and the calibration is completed. At the same time, the contact state of the conductive strip 45 can be monitored in real time through the circuit, and the accuracy of the calibration process is ensured. This design ingeniously combines mechanical adjustment and electrical detection, improves the intelligent level of the overall system, and further ensures the reliability and stability of the measurement data.

[0079] In order to ensure that the distance measuring sensor 14 only moves up and down and does not rotate, two limit blocks 16 are symmetrically arranged on the outer wall of the distance measuring sensor 14, and the limit blocks 16 are located in the sliding groove formed in the inner wall of the protective cylinder 13. The extension direction of the sliding groove is consistent with the length direction of the protective cylinder 13, that is, it extends up and down. Therefore, by cooperating the limit block 16 with the sliding groove, the distance measuring sensor 14 can only move up and down, and cannot rotate.

[0080] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the present application, and are not limited to the implementation. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can be made. Here, it is not necessary and impossible to enumerate all the implementation. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A rapid valve deflection measurement device for detecting the deflection distance of a valve on a cylinder surface, characterized in that, The measuring device includes: A mounting base, inside which a distance measuring sensor (14) for detecting the valve sinking amount is installed; A protection component, which is arranged at the bottom of the mounting base and can protect the detection end of the distance measuring sensor (14); Among them, the protection component includes a receiving seat (21) connected to the bottom of the mounting base, and zero calibration plates (23) are provided at both ends of the receiving seat (21). The zero calibration plates (23) are connected to guide rods (24) inserted into the inside of the receiving seat (21), and the zero calibration plates (23) correspond to the ends of the distance measuring sensor (14); When the zero calibration plate (23) moves towards the direction of the receiving seat (21), a through hole (25) opened on the zero calibration plate (23) corresponds to the distance measuring sensor (14) up and down, and the distance measuring sensor (14) can pass through the through hole (25).

2. The rapid valve deflection measurement device as described in claim 1, characterized in that: An air cavity (31) is opened at the center of the receiving seat (21), and the air cavity (31) corresponds to an inflation joint (36) installed outside the receiving seat (21). A piston cavity (32) is opened inside the receiving seat (21) and near the end of the guide rod (24). A piston disc (33) is connected to one end of the guide rod (24) inserted into the receiving seat (21), and the piston disc (33) fits against the inner wall of the piston cavity (32); Among them, when the inflation joint (36) exhausts air, the guide rod (24) moves the zero calibration plate (23) towards the direction of the receiving seat (21) under the action of negative pressure; On the contrary, when inflating the inflation joint (36), the guide rod (24) moves the zero calibration plate (23) towards the end far from the receiving seat (21) under the action of air pressure.

3. The rapid valve deflection measurement device as described in claim 2, characterized in that: A limiting disc (34) is provided at one end of the piston cavity (32) communicating with the air cavity (31), and an air hole is opened at the center of the limiting disc (34), and the air cavity (31) and the piston cavity (32) are communicated through the air hole; Among them, when the piston disc (33) fits against the limiting disc (34), the through hole (25) on the zero calibration plate (23) corresponds to the distance measuring sensor (14) up and down.

4. The valve deflection rapid measurement device as described in claim 3, characterized in that: One end of the guide rod (24) extending out of the receiving seat (21) is connected to a side plate (22), and the side plate (22) is connected to the zero calibration plate (23). The zero calibration plate (23) fits against the bottom of the receiving seat (21), and the two are slidably connected to each other. The bottom surface of the zero calibration plate (23) is flush with the bottom surface of the mounting base.

5. The rapid valve deflection measurement device as described in claim 2, characterized in that: The mounting base includes a docking seat (11) in a "C" shape. The receiving seat (21) is installed in the opening of the docking seat (11), and the zero calibration plates (23) at both ends of the receiving seat (21) can slide in the opening of the docking seat (11); Among them, two parallel protection cylinders (13) are installed on the top of the docking seat (11), and a handle is connected between the two protection cylinders (13). The distance measuring sensor (14) is inserted into the inside of the protection cylinder (13), and the distance measuring sensor (14) can slide up and down inside the protection cylinder (13).

6. The valve deflection rapid measurement device as described in claim 5, characterized in that: The docking seat (11) is inlaid with an adsorption tube (39), and one end of the adsorption tube (39) extends to the bottom surface of the docking seat (11), and the other end extends to communicate with the tracheal plug (37). A sealing ring is attached to the edge of the end. When the ranging sensor (14) corresponds to the valve on the cylinder, the adsorption tube (39) is in contact with the cylinder, and the negative pressure generated by the exhaust through the air inlet (36) can adsorb the docking seat (11) onto the cylinder.

7. The valve deflection rapid measurement device as described in claim 6, characterized in that: An air pipe connector (38) is embedded in the opening of the docking seat (11), and the air pipe connector (38) corresponds to the air pipe plug (37) on the top of the storage seat (21). When the storage seat (21) is connected to the docking seat (11), the air pipe plug (37) is inserted into the air pipe connector (38). The air tube plug (37) is connected to the air chamber (31) inside the storage base (21). When the air inlet (36) is vented, negative pressure can be transmitted to the adsorption tube (39) through the air tube plug (37).

8. The valve deflection rapid measurement device as described in claim 5, characterized in that: The docking seat (11) is equipped with a device box (12) on the side facing the protective cylinder (13), and a zero-adjustment component is installed inside the device box (12) to adjust the position of the ranging sensor (14). The zeroing component includes a threaded cylinder (41) sleeved on the outside of the ranging sensor (14), and the threaded cylinder (41) and the ranging sensor (14) are connected by threads. The end of the threaded cylinder (41) is equipped with an annular toothed disc (42), and the toothed disc (42) meshes with a bevel gear (43) on a self-locking motor (44). The self-locking motor (44) can drive the threaded cylinder (41) to rotate. When the threaded cylinder (41) rotates, it can drive the distance sensor (14) to move up and down.

9. The valve deflection rapid measurement device as described in claim 8, characterized in that: The outer wall of the ranging sensor (14) is symmetrically provided with two limiting blocks (16), and the limiting blocks (16) are located in the groove opened in the inner wall of the protective cylinder (13). The extension direction of the groove is consistent with the length direction of the protective cylinder (13). The distance measuring sensor (14) is restricted to moving up and down only by the cooperation of the limiting block (16) and the sliding groove, and cannot rotate.

10. The rapid valve deflection measurement device as described in claim 9, characterized in that: The top of the zeroing plate (23) is provided with a guide groove, and a conductive strip (45) is installed on each of the inner walls of the two sides of the guide groove. The extension direction of the guide groove is consistent with the movement path of the distance sensor (14), and the end of the guide groove corresponds to the through hole (25). The two conductive strips (45) are connected by a wire, and a power supply and an indicator light are connected to the wire. When the end of the ranging sensor (14) is inserted into the guide groove, the two conductive strips (45) are in contact with the end of the ranging sensor (14), and a path is formed between the power supply and the indicator light.

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