CN113446927B - Device, method and system for measuring inner diameter of engine valve guide pipe - Google Patents
Device, method and system for measuring inner diameter of engine valve guide pipe Download PDFInfo
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- CN113446927B CN113446927B CN202110519213.5A CN202110519213A CN113446927B CN 113446927 B CN113446927 B CN 113446927B CN 202110519213 A CN202110519213 A CN 202110519213A CN 113446927 B CN113446927 B CN 113446927B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/12—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters
- G01B7/13—Internal diameters
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Abstract
The embodiment of the invention provides a device, a method and a system for measuring the inner diameter of an engine valve guide pipe, wherein the device comprises the following components: the device, the method and the system provided by the embodiment of the invention can accurately measure the depth of the inner diameter of the valve guide pipe and the variation in each direction of the inner diameter of the valve guide pipe, and improve the measurement accuracy of the inner diameter of the valve guide pipe.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to an engine valve guide pipe inner diameter measuring device, method and system.
Background
In the working process of the valve guide pipe, the valve is ensured to do linear reciprocating motion, so that the valve and the valve seat can be correctly attached, and a heat conduction effect is achieved between the valve rod and the cylinder cover. However, when the valve stem moves in the valve guide, the valve stem is lubricated only by splashed engine oil, and the inner diameter of the valve guide is easily worn. Therefore, it is necessary to detect the wear amount of the valve guide inner diameter at regular time and to perform timely replacement.
The current method for detecting the abrasion loss of the inner diameter of the valve guide pipe is to directly use a special inner diameter measuring instrument with a dial indicator to measure the aperture of the valve guide pipe, and compare the measured value with the standard inner diameter to obtain the deformation value of the inner diameter of the valve guide pipe. This method is inconvenient to operate and has a large error.
Disclosure of Invention
The embodiment of the invention provides a device, a method and a system for measuring the inner diameter of an engine valve guide pipe, which can accurately measure the variation of the inner diameter of the guide pipe and are convenient to operate.
In a first aspect, an embodiment of the present invention provides an engine valve guide inner diameter measurement apparatus, the apparatus comprising:
the device comprises a metal wire, a sensing device, a measuring shaft and a signal wire;
the sensing device is fixedly connected with the measuring shaft; the metal wire is arc-shaped, one end of the metal wire is fixedly connected with the measuring shaft, and the other end of the metal wire is in contact with the sensing device;
the measuring device is used for being placed in a valve guide pipe of the engine, the measuring shaft is parallel to the central axis of the valve guide pipe, the metal wire is in contact with the valve guide pipe, and when the measuring shaft moves along the axial direction of the valve guide pipe, the metal wire is extruded by the inner wall of the valve guide pipe to generate radial deformation;
the signal wire is connected with the sensing device and is used for outputting sensing information generated by the sensing device according to the radial deformation, and the sensing information is used for determining the inner diameter information of the valve guide pipe.
Optionally, the sensing device comprises a resistive structure;
the metal wire is in contact with the resistor structure to form a sliding resistor;
the signal wire is specifically used for outputting resistance change information generated by the radial deformation.
The sensing device comprises a piezoelectric crystal;
the signal wire is specifically used for outputting a voltage signal generated by the piezoelectric crystal according to the radial deformation.
The sensing device is annular and sleeved on the measuring shaft;
the number of the metal wires is even, and the directions of each pair of metal wires are symmetrical.
Optionally, the apparatus further includes:
a protective housing;
the measuring shaft, the sensing device and the metal wire are all arranged in the protective shell.
Optionally, the apparatus further includes:
a guide mechanism;
the guide mechanism is fixedly connected with the measuring shaft and is used for providing a guide function for the measuring shaft.
In a second aspect, an embodiment of the present invention provides an information processing method, applied to an information processing device, where the information processing device is connected with a signal line of a measurement device, the measurement device includes a metal wire, a sensing device, a measurement shaft, and a signal line, the sensing device is fixedly connected with the measurement shaft, the metal wire is in an arc shape, one end of the metal wire is fixedly connected with the measurement shaft, the other end of the metal wire is in contact with the sensing device, the measurement device is used for being placed in a valve guide pipe of an engine, the measurement shaft is parallel to a central axis of the valve guide pipe, the metal wire is in contact with the valve guide pipe, and when the measurement shaft moves axially along the valve guide pipe, the metal wire is extruded by an inner wall of the valve guide pipe to generate radial deformation; the method comprises the following steps:
acquiring a signal line to output sensing information generated by the sensing device according to the radial deformation;
and determining and displaying the inner diameter information of the valve guide pipe according to the sensing information.
Optionally, the method further comprises:
determining the corresponding relation between the sensing information and the inner diameter through a calibration test;
correspondingly, determining and displaying the inner diameter information of the valve guide pipe according to the sensing information, and comprising the following steps:
and determining and displaying the inner diameter information of the valve guide pipe according to the sensing information output by the signal wire and the corresponding relation determined by the calibration test.
In a third aspect, an embodiment of the present invention provides an information processing apparatus including:
at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing computer-executable instructions stored in the memory causes the at least one processor to perform the information processing method of any one of the second aspect above.
In a fourth aspect, an embodiment of the present invention provides an engine valve guide inner diameter measurement system, including the engine valve guide inner diameter measurement device according to any one of the first aspect and the information processing device according to the third aspect.
The invention provides an engine valve guide pipe inner diameter measuring device, method and system, which comprise a metal wire, a sensing device, a measuring shaft and a signal wire, wherein the sensing device is fixedly connected with the measuring shaft, the metal wire is arc-shaped, one end of the metal wire is fixedly connected with the measuring shaft, the other end of the metal wire is in contact with the sensing device, the measuring device is used for being placed in a valve guide pipe of an engine, the measuring shaft is parallel to the central axis of the valve guide pipe, the metal wire is in contact with the valve guide pipe, the metal wire is extruded by the inner wall of the valve guide pipe to generate radial deformation when the measuring shaft moves along the axial direction of the valve guide pipe, the signal wire is connected with the sensing device and is used for outputting sensing information generated by the sensing device according to the radial deformation, the sensing information is used for determining the inner diameter information of the valve guide pipe, the change quantity of each depth and each direction of the inner diameter of the valve guide pipe can be accurately measured, the measuring accuracy of the inner diameter of the valve guide pipe is improved, the measuring error is reduced, and the structure is simple and the operation is convenient.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic illustration of a valve guide according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an engine valve guide inner diameter measuring device according to an embodiment of the present invention;
FIG. 3 is a schematic view of another engine valve guide inner diameter measurement device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram showing a contact position between a metal wire and a resistor structure according to an embodiment of the present invention;
FIG. 5 is a schematic diagram showing a contact position of a wire with a piezoelectric crystal according to an embodiment of the present invention;
FIG. 6 is a schematic flow chart of an information processing method according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an information processing apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another information processing apparatus according to an embodiment of the present invention.
Specific embodiments of the present invention have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.
The following describes the technical scheme of the present invention and how the technical scheme of the present invention solves the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
An application scenario provided by the embodiment of the present invention is explained below: the scheme provided by the embodiment of the invention relates to a valve guide pipe of an engine. The valve guide pipe is a guide piece for the reciprocating motion of the valve, and heat received by the valve head is transmitted to the guide pipe through the valve rod and then transmitted to the cylinder cover for heat dissipation. The valve guide is subjected to the side pressure which is transmitted to the valve stem by the valve train and which acts on the valve guide through the valve stem, in addition to the temperature. Meanwhile, no lubricating oil exists between the motion pair formed by the valve rod and the valve seat, the dry friction is realized, the friction force is large, and certain abrasion is easy to generate. In some techniques, the valve guide bore is typically measured directly using a dedicated inside diameter gauge with a dial gauge. Specifically, according to the nominal size of the valve guide, an outside micrometer is used for 'zeroing', the valve guide is inserted into the valve guide, the inner diameter of the guide is directly measured, and the measured value is compared with the standard inner diameter to obtain the variation of the inner diameter of the valve guide. However, this method is inconvenient to operate and has a large error.
Fig. 1 is a schematic position diagram of a valve guide according to an embodiment of the present invention. As shown in fig. 1, the valve guide 10 is located in the engine and cooperates with various other components to complete the operation of the engine. When the inner diameter of the valve guide pipe is measured, the valve guide pipe does not need to be separated, only parts such as a valve rod in the valve guide pipe are taken out, the measuring device 20 is placed in the inner diameter of the valve guide pipe, and the deformation of the inner diameter of the valve guide pipe is measured.
The device for measuring the inner diameter of the engine valve guide pipe is arranged in the valve guide pipe during measurement, one end of a metal wire in the device is fixedly connected with a measuring shaft, and the other end of the metal wire is in contact with a sensing device. When the measuring shaft moves along the axial direction of the valve guide pipe, the metal wire is extruded by the inner wall of the valve guide pipe to generate deformation, sensing information is generated at the sensing device, the signal wire is connected with the sensing device, and the sensing information is output, wherein the inner diameter variation of the valve guide pipe can be obtained through the sensing information.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the case where there is no conflict between the embodiments, the following embodiments and features in the embodiments may be combined with each other.
Fig. 2 is a schematic structural diagram of an engine valve guide inner diameter measuring device according to an embodiment of the present invention. As shown in fig. 2, the apparatus includes: a metal wire 1, a sensing device 3, a measuring shaft 2 and a signal wire 5;
the sensing device 3 is fixedly connected with the measuring 2 shaft; the metal wire 1 is arc-shaped, one end of the metal wire 1 is fixedly connected with the measuring shaft 2, and the other end of the metal wire is in contact with the sensing device 3;
the measuring device is used for being placed in a valve guide pipe of the engine, the measuring shaft 2 is parallel to the central axis of the valve guide pipe, the metal wire 1 is in contact with the valve guide pipe, and when the measuring shaft 2 moves along the axial direction of the valve guide pipe, the metal wire 1 is extruded by the inner wall of the valve guide pipe to generate radial deformation;
the signal wire 5 is connected with the sensing device 3 and is used for outputting sensing information generated by the sensing device 3 according to the radial deformation, and the sensing information is used for determining the inner diameter information of the valve guide pipe.
The metal wire 1 may be an elastic metal wire, so as to achieve the arc-shaped effect of the metal wire in the embodiment of the invention, and may be deformed to a certain extent in the measuring process.
In this embodiment, the sensing device 3 in the measuring device is fixedly connected with the measuring shaft 2, and the wire 1 in the device is arc-shaped, one end of the wire 1 is fixed on the measuring shaft, and the other end is in contact with the sensing device 3.
The sensing device 3 is used for measuring deformation of the wire 1 when the wire 1 contacts with the sensing device 3, and converting the deformation of the wire 1 into sensing information in the sensing device 3. The sensing device 3 may be any device capable of converting deformation into an electrical signal.
Optionally, the measuring device is used for placing the measuring device in a valve guide of an engine when measuring the inner diameter of the guide, wherein the measuring shaft 2 is parallel to the central axis of the valve guide. Further, the measuring shaft 2 and the central axis of the valve guide may coincide. The adopted metal wire 1 is arc-shaped, and when two ends of the metal wire 1 are respectively fixed and contacted with the measuring shaft 2 and the sensing device 3, a certain part of the middle of the metal wire is contacted with the inner diameter of the valve guide pipe. When the measuring shaft 2 moves axially along the valve guide, that is, when the measuring shaft 2 moves from bottom to top or from top to bottom, the wire 1 is radially deformed by the extrusion of the inner wall of the valve guide.
Wherein the radial deformation may be an outwardly expanding or inwardly contracting deformation. For example, when the wire 1 is positioned at a position where abrasion of the valve guide is serious, the inner diameter of the position is larger than that of other positions, and the contact point of the wire 1 with the inner wall of the valve guide is deformed to expand outwards. Correspondingly, when the metal wire 1 is positioned at the expansion deformation position of the valve guide, the contact point of the metal wire 1 and the inner wall of the valve guide is deformed by inward contraction. In the embodiment of the invention, the radial direction and the axial direction can be specifically the radial direction and the axial direction of the valve guide pipe.
The measuring shaft can be moved manually or by an automatic displacement control device.
Optionally, the signal line 5 of the measuring device is connected to the sensing device 3, and the sensing device 3 converts the radial deformation of the wire 1 into sensing information inside the sensing device 3 according to the radial deformation generated by the wire 1, and the sensing information can be used for determining the inner diameter information of the valve guide. The inner diameter information of the valve guide pipe can be the deformation of the valve guide pipe, namely the abrasion loss or expansion deformation of the valve guide pipe, and can also be the inner diameter of the valve guide pipe.
The invention provides an engine valve guide pipe inner diameter measuring device, which comprises a metal wire 1, a sensing device 3, a measuring shaft 2 and a signal wire 5, wherein the sensing device 3 is fixedly connected with the measuring shaft 2, the metal wire 1 is arc-shaped, one end of the metal wire 1 is fixedly connected with the measuring shaft 2, the other end of the metal wire is contacted with the sensing device 3, the measuring device 2 is used for being placed in a valve guide pipe of an engine, the measuring shaft is parallel to the central axis of the valve guide pipe, the metal wire 1 is contacted with the valve guide pipe, the metal wire 1 is extruded by the inner wall of the valve guide pipe to generate radial deformation when the measuring shaft 2 moves along the axial direction of the valve guide pipe, the signal wire 5 is connected with the sensing device 3 and is used for outputting sensing information generated by the sensing device according to the radial deformation, the sensing information is used for determining the inner diameter information of the valve guide pipe, the inner diameter of the valve guide pipe can be accurately measured in various depths and in various directions, the measuring accuracy of the inner diameter of the valve guide pipe is improved, the measuring error is reduced, and the structure is simple, and the operation is convenient.
On the basis of the technical solution provided in the above embodiment, optionally, the sensing device 3 may be a resistor structure. The metal wire is in contact with the resistor structure to form a sliding resistor; the signal wire is specifically used for outputting resistance change information generated by the radial deformation.
In this embodiment, the amount of change in the valve guide inner diameter may be measured using a resistive structure. When the wire is in contact with and moves over the resistive structure, a sliding resistance may be formed. One end of the resistor structure is connected with the signal wire 5, and the signal wire 5 can be used for outputting resistance value change generated when the metal wire radially deforms.
In an alternative embodiment, the resistive structure in the measuring device is fixedly connected to the measuring shaft 2, and the wire 1 in the measuring device is fixed to the measuring shaft 2 at one end and floats at the other end, forming a sliding resistance in contact with the resistive structure. The measuring device is placed in an engine valve guide, wherein the measuring shaft is parallel to the central axis of the valve guide and is positioned in the central position of the valve guide. When the measuring shaft 2 is axially displaced along the valve guide, the wire 1 is radially deformed by the extrusion of the inner wall of the valve guide and exhibits an axial displacement at the floating end in contact with the resistive structure. The signal line 5 in the measuring device is connected to the resistive structure, and when the wire 1 is displaced on the resistive structure, a change in the resistance value of the resistor occurs. At this time, the signal line 5 connected to the resistor structure can output the variation of the resistance value.
Specifically, in the measuring device, if abrasion occurs in the inner diameter of the valve guide, when the measuring shaft 2 is moved upward, the wire 1 is pressed by the inner wall of the valve guide to expand outward, and at this time, the wire 1 is displaced downward at the floating end of the resistor structure, thereby generating a resistance change, and the signal line 5 can output the resistance change amount.
The variable quantity of the inner diameter of the valve guide pipe can be accurately obtained by using the resistance structure as a sensing device to measure the variable quantity of the inner diameter of the valve guide pipe and using the resistance variable quantity generated by the displacement of the metal wire 1, so that the operation is more convenient.
Fig. 3 is a schematic structural diagram of another engine valve guide inner diameter measuring device according to an embodiment of the present invention. In this embodiment, the sensing device may be a piezoelectric crystal. As shown in fig. 3, the apparatus in this embodiment may include: the measuring device comprises a metal wire 1, a sensing device, a measuring shaft 2 and a signal wire 5;
the sensing device is fixedly connected with the measuring shaft 2; the metal wire 1 is arc-shaped, one end of the metal wire 1 is fixedly connected with the measuring shaft 2, and the other end of the metal wire is in contact with the sensing device;
the measuring device is used for being placed in a valve guide pipe of the engine, the measuring shaft is parallel to the central axis of the valve guide pipe, the metal wire 1 is in contact with the valve guide pipe, and when the measuring shaft 2 moves along the axial direction of the valve guide pipe, the metal wire 1 is extruded by the inner wall of the valve guide pipe to generate radial deformation;
the signal wire 5 is connected with the sensing device and is used for outputting sensing information generated by the sensing device according to the radial deformation, and the sensing information is used for determining the inner diameter information of the valve guide pipe.
Wherein the sensing means may comprise a piezoelectric crystal 8, which may convert pressure into a voltage signal; the signal line is specifically configured to output a voltage signal generated by the piezoelectric crystal 8 according to the radial deformation.
In this embodiment, one end of the piezoelectric crystal 8 contacts with the wire, and when the wire is deformed radially, the pressure applied to the piezoelectric crystal 8 by the end contacting with the piezoelectric crystal 8 also changes, and the other end of the piezoelectric crystal 8 is connected with the signal line 5, and the signal line 5 can output the voltage change amount generated when the wire is deformed radially.
In the present embodiment, the piezoelectric crystal 8 in the measuring device is fixedly connected to the measuring shaft 2, and the wire 1 in the measuring device is fixed to the measuring shaft 2 at one end and contacts the piezoelectric crystal 8 at the other end. The measuring device is placed in an engine valve guide, wherein the measuring shaft 2 is parallel to the central axis of the valve guide and is located in the central position of the valve guide. When the measuring shaft 2 axially displaces along the valve guide, the wire 1 is pressed by the inner wall of the valve guide to generate radial deformation, and the pressure of the piezoelectric crystal 8 is expressed at the floating end contacted by the piezoelectric crystal 8. The signal line 5 in the measuring device is connected to the piezo-electric crystal 8, when the wire 1 is subjected to a pressure change on the piezo-electric crystal 8. The signal line 5 connected to the resistor structure can output the variation of the voltage level.
Specifically, if the valve guide inner diameter has a certain abrasion, when the wire 1 contacts the abrasion part by moving the measuring shaft, the wire 1 is extruded by the inner wall of the valve guide to expand outwards, at the moment, the wire 1 is represented as a pressure reduction at the floating end of the piezoelectric crystal 8, and the signal wire 5 is connected with the piezoelectric crystal 8, so that the voltage variation can be output.
The piezoelectric crystal 8 is used as a sensing device to measure the variation of the inner diameter of the valve guide pipe, and the pressure variation is obtained by utilizing the pressure variation of the metal wire 1 at the floating end of the piezoelectric crystal 8, so that the variation of the inner diameter of the valve guide pipe is conveniently measured.
Optionally, the sensing device is annular and is sleeved on the measuring shaft 2;
the number of the metal wires 1 is even, and the directions of each pair of the metal wires 1 are symmetrical.
In this embodiment, the sensing device may be annular and sleeved on the measuring shaft. I.e. the resistive structure or the piezo-electric crystal may be ring-shaped. The number of the wires 1 in the measuring device may be an even number, and the positions of the wires 1 are symmetrical and correspond to each other.
Specifically, the number of wires 1 may be four, six, or the like. When the number of the metal wires 1 is four, the angle formed by the connecting line of the concentric intersection points of the fixed ends of the two adjacent metal wires 1 is 90 degrees, and when the number of the metal wires 1 is six, the angle formed by the connecting line of the concentric intersection points of the fixed ends of the two adjacent metal wires 1 is 60 degrees.
Fig. 4 is a schematic diagram of a contact position between a metal wire and a resistor structure according to an embodiment of the present invention. In an alternative embodiment, when the sensing device is a resistor structure, the number of wires is four, the center of the annular resistor structure can be set as the origin, and four points a, B, C and D are obtained at 0 degrees, 90 degrees, 180 degrees and 270 degrees respectively, wherein the four points a, B, C and D are the contact points of the wires and the annular resistor. According to fig. 4, the included angle between two adjacent wires and the central connecting line is 90 degrees, and the positions of the four wires are symmetrical. Wherein A and C are symmetrical and B and D are symmetrical.
Fig. 5 is a schematic diagram of a contact position between a wire and a piezoelectric crystal according to an embodiment of the present invention. In another alternative embodiment, as shown in fig. 5, when the sensing device is a piezoelectric crystal, the number of wires is set to six, and the ring-shaped piezoelectric crystal can be set with the center as the origin to obtain six points, namely, points of contact between the wires and the piezoelectric crystal, wherein the included angle between every two adjacent points of contact and the center line is 60 degrees, and the positions of the six wires are symmetrical. Wherein A and D are symmetrical, B and E are symmetrical, and C and F are symmetrical.
By arranging an even number of wires with symmetrical positions, the change amounts of the valve guide pipe in different directions can be measured, and the change amounts of the valve guide pipe in all directions can be completely covered.
On the basis of the technical solutions provided in the above embodiments, optionally, the measuring device provided by the present invention further includes a protective housing 4;
the measuring shaft 2, the sensing device and the wire 1 are all arranged in the protective housing 4.
The protective housing 4 is fixed on the measuring shaft 2, protecting the sensor device, the measuring shaft 2 and the wire 1. Wherein, at the position of the metal wire 1, the protective jacket has a hole like the length of the metal wire 1, and the metal wire 1 is discharged to be contacted with the inner wall of the valve guide. Specifically, if there are four wires 1, four holes corresponding to the positions of the wires 1 appear in the protective cover, so that the four wires 1 can contact with the inner wall of the valve guide.
In this embodiment, the protective housing 4 can prevent the measuring shaft 2, the sensing device and the wire 1 from being contaminated by oil stains, and has a protective effect on the measuring device.
Optionally, the measuring device provided by the implementation of the invention further comprises a guiding mechanism 6;
the guiding mechanism 6 is fixedly connected with the measuring shaft 2 and is used for providing a guiding function for the measuring shaft 2.
The guiding mechanism 6 is two cylinders, is respectively arranged above and below the protective shell 4, and is fixedly connected with the measuring shaft 2. The guide mechanism 6 arranged above the protective shell is longer, and the lower guide mechanism is shorter, so that the whole measuring device can be guided.
In this embodiment, the guiding mechanism 6 can realize positioning and guiding when the measuring device is pulled, and avoid the phenomenon of inclination and deviation of the measuring device in the measuring process.
Fig. 6 is a schematic flow chart of an information processing method according to an embodiment of the present invention. As shown in fig. 6, the method is applied to an information processing device, the information processing device is connected with a signal wire of a measuring device, the measuring device comprises a metal wire, a sensing device, a measuring shaft and a signal wire, the sensing device is fixedly connected with the measuring shaft, the metal wire is arc-shaped, one end of the metal wire is fixedly connected with the measuring shaft, the other end of the metal wire is in contact with the sensing device, the measuring device is used for being placed in a valve guide pipe of an engine, the measuring shaft is parallel to a central axis of the valve guide pipe, the metal wire is in contact with the valve guide pipe, and when the measuring shaft moves along the axial direction of the valve guide pipe, the metal wire is extruded by the inner wall of the valve guide pipe to generate radial deformation, and the method comprises:
and 601, acquiring a signal line to output sensing information generated by the sensing device according to the radial deformation.
Optionally, the information processing device acquires sensing information generated by the sensing device output by the signal wire according to radial deformation of the metal wire. The sensing information may represent a change in resistance or a change in voltage.
In an alternative embodiment, when the sensing device is in a resistor structure, and the measuring shaft moves upwards along the inner diameter direction of the valve guide, the metal wire is extruded by the inner wall of the valve guide to generate radial deformation, and the metal wire is in an arc shape, so that the metal wire at the contact end with the resistor structure generates axial deformation to generate upward or downward displacement change, thereby generating resistance value change. The resistance structure is connected with a signal wire, and the signal wire transmits the resistance change to the information processing device.
In another alternative embodiment, when the sensing device is a piezoelectric crystal, and the measuring shaft moves upwards along the inner diameter direction of the valve guide, the metal wire is extruded by the inner wall of the valve guide to generate radial deformation, and the metal wire is arc-shaped, so that pressure change occurs at the contact end of the metal wire with the piezoelectric crystal, and the pressure change amount is generated. The piezoelectric crystal is connected to a signal line, and the signal line transmits the pressure variation to the information processing device.
And 602, determining and displaying the inner diameter information of the valve guide pipe according to the sensing information.
Optionally, the information processing device converts the sensing information into the variable quantity of the inner diameter of the valve guide pipe after obtaining the sensing information output by the signal wire, and records and displays the variable quantity.
Specifically, the output sensing information may be a current signal or a voltage signal, and the corresponding inner diameter information is determined according to the current signal or the voltage signal.
The invention provides an information processing method, which is applied to an information processing device, wherein the information processing device is connected with a signal wire of a measuring device, the measuring device comprises a metal wire, a sensing device, a measuring shaft and a signal wire, the sensing device is fixedly connected with the measuring shaft, the metal wire is arc-shaped, one end of the metal wire is fixedly connected with the measuring shaft, the other end of the metal wire is contacted with the sensing device, the measuring device is used for being placed into a valve guide pipe of an engine, the measuring shaft is parallel to the central axis of the valve guide pipe, the metal wire is contacted with the valve guide pipe, and the metal wire is extruded by the inner wall of the valve guide pipe to generate radial deformation when the measuring shaft moves along the axial direction of the valve guide pipe, and the method comprises the following steps: the sensing information generated by the sensing device according to the radial deformation is output by the acquisition signal wire, the inner diameter information of the valve guide pipe is determined according to the sensing information and displayed, the variation of each depth and each direction of the inner diameter of the valve guide pipe can be accurately measured, the measuring precision of the inner diameter of the valve guide pipe is improved, the measuring error is reduced, and the valve guide pipe is simple in structure and convenient to operate.
Optionally, the method further comprises:
determining the corresponding relation between the sensing information and the inner diameter through a calibration test; correspondingly, determining and displaying the inner diameter information of the valve guide pipe according to the sensing information, and comprising the following steps:
and determining and displaying the inner diameter information of the valve guide pipe according to the sensing information output by the signal wire and the corresponding relation determined by the calibration test.
In this embodiment, before the measuring device is used to measure the variation of the inner diameter of the valve guide, the measuring device is calibrated first, and the corresponding relation between the sensing information and the inner diameter of the valve guide is determined. And obtaining the change quantity of the inner diameter of the valve guide pipe through the calibrated corresponding relation of the sensing information.
In an alternative embodiment, a resistor structure is used as a sensing device, a plurality of standard valve guide pipes are selected first, the inner diameter of the standard valve guide pipes is measured, and the resistance value in the measuring process is recorded. And obtaining the corresponding relation between the inner diameter of the valve guide pipe and the resistance value according to the inner diameter value of the valve guide pipe and the measured resistance value.
Alternatively, when the floating end of the wire is axially displaced, the wire is set to move up in the resistive structure to a negative value, indicating a protrusion or expansion of the valve guide inner diameter, and the wire is set to move down in the resistive structure to a positive value, indicating wear of the valve guide inner diameter.
When the sensing device is a measuring device of a resistance structure and is used for measuring the change of the inner diameter of the valve guide pipe, the measuring shaft is moved, the metal wire is extruded by the inner wall of the valve guide pipe to generate radial deformation due to the deformation of the inner diameter of the valve guide pipe, and the metal wire at the contact end of the sensing device and the resistance structure is axially deformed to generate upward or downward displacement change, so that the resistance value change is generated. The resistance structure is connected with a signal wire, the signal wire transmits the resistance change to the information processing device, and the information processing device obtains the change quantity and the change direction of the valve guide inner diameter according to the corresponding relation between the valve guide inner diameter and the resistance value and the position of the metal wire. According to the obtained change amount and direction of the inner diameter of the valve guide pipe, a graph of the change amount of the inner diameter of the valve guide pipe measured by each metal wire can be drawn, wherein the horizontal axis of the graph represents the depth value of the inner diameter of the valve guide pipe, and the vertical axis represents the change amount of the inner diameter of the valve guide pipe.
Specifically, there are four wires in the measuring device, when the measuring shaft is moved to a position from 0mm to 1mm from the bottom of the valve guide, due to the different deformation amounts of the inner diameter of the valve guide, the displacement change of the wires upwards or downwards at the end of the resistor structure can be obtained, wherein the wire in the 0 degree direction moves downwards by 0.5mm at the resistor structure, which means that the inner diameter of the valve guide is worn. The resistance change generated by moving 0.5mm is transmitted to the information processing device through a signal wire, and the information processing device obtains the abrasion loss of 0.04mm at the position through the corresponding relation between the resistance value and the inner diameter, and the abrasion loss is displayed in the sequence of depth, direction and change quantity, and is 1mm,0 degree and +0.04mm. Where positive values represent wear and negative values represent expansion. Measurements may be made for each directional wire and for each depth of valve guide inner diameter.
In another alternative embodiment, a piezoelectric crystal is used as a sensing device, a plurality of standard valve guide pipes are selected first, the plurality of standard valve guide pipes are measured, and a plurality of voltage values obtained in the measuring process are recorded. And obtaining the corresponding relation between the inner diameter of the valve guide pipe and the voltage value according to the inner diameter value of the valve guide pipe and the measured voltage value.
Alternatively, when the floating end of the metal wire moves upwards to generate larger voltage value change when the floating end of the metal wire moves axially, the floating end of the metal wire represents the protrusion or expansion of the inner diameter of the valve guide pipe; the floating end of the wire moves downwards to reduce the pressure, and when a small voltage value change is generated, the abrasion of the inner diameter of the valve guide pipe is indicated.
When the sensor is a piezoelectric crystal measuring device to measure the change of the inner diameter of the valve guide, the measuring shaft is moved, and the metal wire is extruded by the inner wall of the valve guide to generate radial deformation due to the deformation of the inner diameter of the valve guide, so that the pressure change occurs at the contact end with the piezoelectric crystal, thereby causing the change of voltage. The piezoelectric crystal is connected with a signal wire, the signal wire transmits the voltage change to an information processing device, and the information processing device obtains the change amount and the change direction of the valve guide inner diameter according to the corresponding relation between the voltage and the valve guide inner diameter and the position of the metal wire. According to the obtained change amount and direction of the inner diameter of the valve guide pipe, a change curve chart of the inner diameter of the valve guide pipe measured by each metal wire can be drawn, wherein the horizontal axis of the curve chart is the depth value of the inner diameter of the valve guide pipe, and the vertical axis of the curve chart is the change amount of the inner diameter of the valve guide pipe.
Specifically, when the measuring shaft is moved to a position from 1mm to 2mm from the bottom of the valve guide, the pressure change of the wire at the piezoelectric crystal end can be obtained due to the difference in the deformation amount of the valve guide inner diameter, wherein the voltage of the wire in the 60-degree direction at the piezoelectric crystal is reduced from a fixed value, which means that the valve guide inner diameter at the position is worn. The changed pressure value is transmitted to an information processing device through a signal wire, and the information processing device obtains the abrasion loss of 0.05mm at the position through the corresponding relation between the voltage and the inner diameter, and the abrasion loss is displayed in the sequence of depth, direction and change, and is 2mm,60 degrees and +0.05mm. Where positive values represent wear and negative values represent expansion. Measurements may be made for each directional wire and for each depth of valve guide inner diameter.
Through calibrating the sensing device, the corresponding relation between the sensing information and the inner diameter of the valve guide pipe is obtained, and the variable quantity of the valve guide pipe can be directly obtained, so that the device is simpler and more convenient to operate.
Fig. 7 is a schematic structural diagram of an information processing apparatus according to an embodiment of the present invention. As shown in fig. 7, the information processing apparatus provided in this embodiment may include:
the acquisition module 701 is configured to acquire a signal line, and output sensing information generated by the sensing device according to the radial deformation;
the determining module 702 is configured to determine and display information of an inner diameter of the valve guide according to the sensing information.
Optionally, the obtaining module 701 is further configured to: determining the corresponding relation between the sensing information and the inner diameter through a calibration test;
accordingly, the determining module 702 is specifically configured to:
and determining and displaying the inner diameter information of the valve guide pipe according to the sensing information output by the signal wire and the corresponding relation determined by the calibration test.
The device provided in this embodiment may implement the technical solutions of the method embodiments shown in fig. 1 to 6, and its implementation principle and technical effects are similar, and are not described here again.
Fig. 8 is a schematic structural diagram of another information processing apparatus according to an embodiment of the present invention. As shown in fig. 8, the apparatus provided in this embodiment may include: at least one processor 81 and a memory 82;
the memory 82 stores computer-executable instructions;
the at least one processor 81 executes computer-executable instructions stored in the memory 82 such that the at least one processor 81 performs the method of any of the embodiments described above.
Wherein the memory 82 and the processor 81 may be connected by a bus 83.
The specific implementation principle and effect of the device provided in this embodiment may refer to the relevant descriptions and effects corresponding to the embodiments shown in fig. 1 to fig. 6, which are not repeated here.
The embodiment of the invention also provides a system for measuring the inner diameter of the engine valve guide pipe, which comprises the device for measuring the inner diameter of the engine valve guide pipe provided by any embodiment of the invention and the information processing device provided by the embodiment of the invention.
The structure, function and connection relationship of each component in the system provided by the embodiment of the present invention can be referred to the above embodiments, and are not repeated here.
In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules is merely a logical function division, and there may be additional divisions of actual implementation, e.g., multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.
The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physical units, may be located in one place, or may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to implement the solution of this embodiment.
In addition, each functional module in the embodiments of the present invention may be integrated in one processing unit, or each module may exist alone physically, or two or more modules may be integrated in one unit. The units formed by the modules can be realized in a form of hardware or a form of hardware and software functional units.
The integrated modules, which are implemented in the form of software functional modules, may be stored in a computer readable storage medium. The software functional modules described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or processor to perform some of the steps of the methods described in the various embodiments of the invention.
It should be appreciated that the processor may be a central processing unit (Central Processing Unit, CPU for short), other general purpose processors, digital signal processor (Digital Signal Processor, DSP for short), application specific integrated circuit (Application Specific Integrated Circuit, ASIC for short), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in a processor for execution.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile memory NVM, such as at least one magnetic disk memory, and may also be a U-disk, a removable hard disk, a read-only memory, a magnetic disk or optical disk, etc.
The bus may be an industry standard architecture (Industry Standard Architecture, ISA) bus, an external device interconnect (Peripheral Component Interconnect, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The buses may be divided into address buses, data buses, control buses, etc. For ease of illustration, the buses in the drawings of the present invention are not limited to only one bus or to one type of bus.
The storage medium may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuits, ASIC for short). It is also possible that the processor and the storage medium reside as discrete components in an electronic device or a master device.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. An engine valve guide inner diameter measuring device, comprising: the device comprises a metal wire, a sensing device, a measuring shaft and a signal wire;
the sensing device is fixedly connected with the measuring shaft; the metal wire is arc-shaped, one end of the metal wire is fixedly connected with the measuring shaft, and the other end of the metal wire is in contact with the sensing device;
the measuring device is used for being placed in a valve guide pipe of the engine, the measuring shaft is parallel to the central axis of the valve guide pipe, the metal wire is in contact with the valve guide pipe, and when the measuring shaft moves along the axial direction of the valve guide pipe, the metal wire is extruded by the inner wall of the valve guide pipe to generate radial deformation;
the signal wire is connected with the sensing device and is used for outputting sensing information generated by the sensing device according to the radial deformation, and the sensing information is used for determining the inner diameter information of the valve guide pipe;
the sensing device includes: a piezoelectric crystal;
the signal wire is specifically used for outputting a voltage signal generated by the piezoelectric crystal according to the radial deformation.
2. The device according to claim 1, wherein the sensing device is annular and is sleeved on the measuring shaft;
the number of the metal wires is even, and the directions of each pair of metal wires are symmetrical.
3. The apparatus as recited in claim 1, further comprising: a protective housing;
the measuring shaft, the sensing device and the metal wire are all arranged in the protective shell.
4. The apparatus as recited in claim 1, further comprising: a guide mechanism;
the guide mechanism is fixedly connected with the measuring shaft and is used for providing a guide function for the measuring shaft.
5. The utility model provides an information processing method, which is characterized in that is applied to information processing device, information processing device is connected with measuring device's signal line, measuring device includes wire, sensing device, measuring shaft, signal line, sensing device with measuring shaft fixed connection, the wire is the arc, the one end of wire with measuring shaft fixed connection, the other end with sensing device contact, measuring device is used for putting into the valve guide of engine, measuring shaft with the central axis of valve guide is parallel, the wire with valve guide contacts, the measuring shaft is along when valve guide axial displacement the wire receives valve guide inner wall extrusion produces radial deformation, sensing device includes: a piezoelectric crystal; the signal wire is specifically used for outputting a voltage signal generated by the piezoelectric crystal according to the radial deformation; the method comprises the following steps:
acquiring a signal line to output sensing information generated by the sensing device according to the radial deformation;
and determining and displaying the inner diameter information of the valve guide pipe according to the sensing information.
6. The method as recited in claim 5, further comprising:
determining the corresponding relation between the sensing information and the inner diameter through a calibration test;
correspondingly, determining and displaying the inner diameter information of the valve guide pipe according to the sensing information, and comprising the following steps:
and determining and displaying the inner diameter information of the valve guide pipe according to the sensing information output by the signal wire and the corresponding relation determined by the calibration test.
7. An information processing apparatus, characterized by comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing computer-executable instructions stored in the memory causes the at least one processor to perform the information processing method of any one of claims 5-6.
8. An engine valve guide inner diameter measuring system comprising the engine valve guide inner diameter measuring device according to any one of claims 1 to 4 and the information processing device according to claim 7.
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