CN115265435A - Measuring device and measuring method for pedal stroke - Google Patents
Measuring device and measuring method for pedal stroke Download PDFInfo
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- CN115265435A CN115265435A CN202210688964.4A CN202210688964A CN115265435A CN 115265435 A CN115265435 A CN 115265435A CN 202210688964 A CN202210688964 A CN 202210688964A CN 115265435 A CN115265435 A CN 115265435A
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The invention discloses a measuring device and a measuring method for pedal travel, wherein the measuring device comprises a reference device and a measuring mechanism, the reference device comprises a first level gauge, a reference part, a first adjusting and locking mechanism and a supporting part, the measuring mechanism comprises a fixing device, a fixed adjusting block, a second level gauge, a horizontal guide rail, a measuring tool and a second adjusting and locking mechanism, the fixed adjusting block is fixedly connected with at least one second level gauge, the fixing device and the fixed adjusting block change relative positions through the second adjusting and locking mechanism, and the initial position of the horizontal guide rail is coincided with the position of a rotating shaft of the fixed adjusting block. The pedal stroke measuring device reduces the fixed installation requirement of the pedal stroke measuring device, can realize installation and accurate measurement on different vehicle types and different pedal mechanisms, and solves the problem of high installation requirement in the traditional pedal stroke measurement.
Description
Technical Field
The invention relates to the technical field of measuring tools, in particular to a device and a method for measuring pedal travel.
Background
Currently, the existing pedal stroke test is usually performed by using a ruler or a tape measure, or a pull-cord type stroke sensor. The problem that errors are large when the ruler or the tape measure is used for direct measurement is solved, the stay wire type stroke sensor is low in cost and simple in structure, requirements for a fixing mode are high, the measuring process is complex, and the equivalent measuring mode has large deviation.
In addition, in engineering development, a precise test is performed on a bench by a precise instrument or a part supplier, although the precision measurement of the precise instrument or the bench is high, most of the precise instrument or the bench only tests the parts, real-time measurement cannot be performed, and the test cost is high.
Therefore, the prior art is still to be further developed.
Disclosure of Invention
The invention provides a device and a method for measuring pedal travel, aiming at the problems in the prior art.
To achieve the above object, the present invention provides a pedal stroke measuring device, comprising: the device comprises a reference device and a measuring mechanism, wherein the reference device is used for providing a vertical reference surface for the measuring mechanism;
the reference device comprises a first level gauge, a reference part, a first adjusting and locking mechanism and a support part, wherein the first level gauge is fixedly connected to the reference part, and the reference part is locked with the support part through the first adjusting and locking mechanism;
measuring mechanism, including fixing device, fixed regulating block, second spirit level, horizontal guide rail, measuring tool and second regulation locking mechanism, fixing device is used for fixed footboard, fixed regulating block fixed connection at least one second spirit level, fixing device with fixed regulating block changes relative position through second regulation locking mechanism, horizontal guide rail initial position with the pivot position coincidence of fixed regulating block, at least one measuring tool can be placed to the horizontal guide rail.
Optionally, the first level gauge is fixedly connected to a free end of the reference portion, and the first level gauge and the second level gauge include a universal level gauge, a closed image level gauge and a frame level gauge.
Optionally, the reference portion is a panel, and one end of the reference portion opposite to the free end is rotatably connected with the support portion.
Optionally, the first adjustment locking mechanism comprises a fastening bolt.
Optionally, the fixing means comprises at least one pair of oppositely arranged fixing bolts.
Optionally, the fixing device has an "L" shaped extension arm, the fixed adjusting block can slide on the fixing device, and the initial position of the horizontal guide rail coincides with the position of the rotating shaft of the fixed adjusting block.
Optionally, the measuring tool comprises a ruler freely slidable mountable on the guide rail.
In a second aspect of the present invention, there is provided a measurement method related to the measurement apparatus provided in any one of the embodiments of the first invention, including:
establishing a reference plane perpendicular to a horizontal plane based on the reference device, and fixing the measuring mechanism based on the pedal and the reference device;
determining an initial position P of a pedal, wherein the initial position of the pedal is a position of the pedal in a free state;
measuring the rotation radius R of the pedal;
determining an end position Q of the pedal, wherein the end position Q is a position of the pedal for ending the rotation state;
based on the end point position Q of the pedal, making a point Q ' projected on a horizontal reference plane, obtaining the length a of the Q ' by using a measuring tool, extending O ' Q on the horizontal reference plane and intersecting at a point R, and obtaining the length b of QR based on the measuring tool;
acquiring the angle beta of the pedal from the initial position P of the pedal to the final position Q of the pedal based on the length a and the length b;
the pedal stroke S is calculated based on the angle β and the radius of rotation R of the pedal.
Optionally, the rotation axis origin O of the pedal is the position of the rotation axis in the initial position state of the pedal, and the rotation radius R is the distance between the rotation axis origin O and the initial position P of the pedal.
Optionally, measuring the other end position of the pedal, and rotating a fixed adjusting block, wherein the fixed adjusting block is used for locking the pedal after the pedal is rotated each time;
and repeatedly rotating the pedals to different positions to obtain the lengths a and b of the different positions so as to obtain the angle of the pedals rotating from the initial positions of the pedals to the final positions of the different pedals.
The invention comprises a reference device and a measuring mechanism which can be independent and separable, a stable measuring foundation is obtained by means of a level gauge, a second adjusting and locking mechanism is used in the measuring mechanism, the fixed installation requirement on the pedal is reduced, the applicability is wide, the installation and accurate measurement can be realized on different vehicle types and different pedal mechanisms, the problem of high installation requirement in the traditional pedal stroke is solved, and the troubles of installation, maintenance and maintenance are avoided due to the simple and easy obtaining of tools of the reference device and the measuring mechanism and the low use cost.
Drawings
FIG. 1 is a schematic diagram of a reference device according to an embodiment of the present invention;
FIG. 2 is a front view of a measurement mechanism in one embodiment of the present invention;
FIG. 3 is a left side view of a measurement mechanism in accordance with an embodiment of the present invention;
FIG. 4 is a top view of a measurement mechanism in accordance with an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a method for measuring travel distance according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating a measurement calculation of a measurement travel according to an embodiment of the present invention.
1-a first level gauge, 2-a reference part, 3-a first adjusting locking mechanism, 4-a supporting part, 5-a fixing device, 6-a fixing adjusting block, 7-a second level gauge, 8-a horizontal guide rail, 9-a measuring tool, 10-a second adjusting locking mechanism and 11-a fixing bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a measuring device of pedal stroke, comprising: the device comprises a reference device and a measuring mechanism, wherein the reference device is used for providing a vertical reference surface for the measuring mechanism.
Referring to fig. 1, the reference device includes a first level 1, a reference portion 2, a first adjusting locking mechanism 3 and a support portion 4, the first level 1 is fixedly connected to the reference portion 2, and the reference portion 2 is locked to the support portion 4 by the first adjusting locking mechanism 3.
Specifically, the reference device is used for providing a measurement reference surface perpendicular to a horizontal plane for the measurement mechanism, wherein the first level gauge 1 is used for ensuring that the reference device provides the measurement reference surface perpendicular to the horizontal plane when the reference portion 2 is vertically fixed, and corresponding support portion 4, reference portion 2 and first adjusting and locking mechanism 3 are selected in order to correspond to the specification of the measurement mechanism, wherein the first adjusting and locking mechanism 3 can lock and fix the reference portion 2 and the support portion 4 by using a locking bolt, and can also perform corresponding adjustment according to the height of the measurement mechanism, the support portion 4 mainly serves for supporting the reference portion 2, and for the integrity of the support, stable support portions 4 such as an isosceles triangle support portion and a vertical flat plate support portion can be selected according to actual conditions, the first level gauge 1 is fixedly connected at the free end of the reference portion 2, the first level gauge 1 can be fixed by adopting a magnetic attraction manner, an adhesive manner and the like, specifically, a reference interval can be set on the reference portion 2, and 1cm is taken as a reference scale, the function of the reference device can be perfected in a quantitative manner, and the accuracy of the measurement reference surface can be improved.
Referring to fig. 2, the measuring mechanism includes a fixing device 5, a fixing adjusting block 6, a second level gauge 7, a horizontal guide rail 8, a measuring tool 9, and a second adjusting and locking mechanism 10, the fixing device 5 is used to fix a pedal, the fixing adjusting block 6 is fixedly connected to at least one second level gauge 7, the fixing device 5 and the fixing adjusting block 6 change relative positions through the second adjusting and locking mechanism 10, an initial position of the horizontal guide rail 8 coincides with a position of a rotating shaft of the fixing adjusting block 6, and the horizontal guide rail 8 is connected to the rotating shaft of the fixing adjusting block 6, and the horizontal guide rail 8 can accommodate at least one measuring tool 9.
Specifically, fixing device 5 is fixed at the measuring point of footboard, just the measuring point can support whole measuring mechanism but does not disturb the normal rotation of footboard, and for fixed convenience, fixing device 5 can adopt different fixed mode, for example, can adopt the mode of the fixed footboard of initial position of footboard, accomplish footboard and measuring mechanism and be connected, in order to guarantee measuring accuracy, fixing device 5's fixed mode is main with protection footboard form itself, and the application of force mode of treating the footboard when fixed should be unified as far as possible, guarantees that the footboard both with measuring mechanism fixed connection and be difficult for breaking away from fixing device 5.
Specifically, the fixed adjusting block 6 is fixedly connected with at least one second level meter 7, for example, one on each of the left side and the right side; the second level gauge 7 can be used for measuring the level degree of the fixed adjusting block 6, the relative position of the fixing device 5 and the fixed adjusting block 6 is changed through the second adjusting and locking mechanism 10, the method comprises the step of placing the fixing device 5 in a proper measurable range based on the second adjusting and locking mechanism 10, further, the starting position of the horizontal guide rail 8 is coincided with the rotating shaft position of the fixed adjusting block 6, and due to the fact that at least one measuring tool 9 is placed in the horizontal guide rail 8, the starting position of the horizontal guide rail 8 is coincided with the rotating shaft position of the fixed adjusting block 6, the measuring tool 9 on the horizontal guide rail 8 is not influenced no matter how the fixed adjusting block 6 rotates, and the same measuring initial position is ensured.
The relative position of the fixing device 5 and the fixing adjusting block 6 is changed by the second adjusting and locking mechanism 10, and here, the change of the relative position can be expressed as that the position of the fixing device 5 and the fixing adjusting block 6 is adaptively fixed by the second adjusting and locking mechanism 10 in consideration of the influence of spatial distribution. In an embodiment of the present invention, the fixing device 5 supports the fixed adjusting block 6 through an L-shaped extension arm, and the second adjusting and locking mechanism may be connected to a rotating shaft of the fixed adjusting block 6 by a threaded connection.
Optionally, the first level 1 is fixedly connected to the free end of the reference part 2, and the first level 1 and the second level 7 may each adopt one or more of a universal level, a portrait level and/or a frame level.
Specifically, the primary purpose of the first level 1 is to ensure the level of the reference device, and the second level 7 is to ensure the level of the measuring tool 9, where, within a suitable reference range, a plurality of different types of levels can be used to obtain more stable measurement of the reference device and the measuring mechanism, for example, a universal level model BFHD-6010, a GR/SH166, a box level model SK100-500, etc. can be selected for use in the first level 1, wherein, for practical purposes, a custom level can also be used.
Alternatively, the reference portion 2 may be shaped as a panel perpendicular to the support portion 4, and one end of the reference portion 2 opposite to the free end is rotatably connected to the support portion 4.
In particular, the reference part 2 is an important component of the reference device, and when the reference part is in the form of a panel, the occupation space of the reference device can be greatly saved, preferably, the reference part 2 can be a vertical panel, and because the diagonal angles in the panel are right angles, the reference precision of the whole reference device can still be ensured by the characteristics of the right-angle side when the first level 1 is placed at the free end of the first level;
furthermore, the reference part 2 is rotatably connected with the support part 4 relative to one end of the free end, and in this way, the reference part 2 and the support part 4 can be effectively connected, except for the rotary connection, the reference part 2 relative to the free end and the support part 4 can be locked and fixed by adopting rivet connection, insertion connection, hinging and other modes, and after the use, the reference part can be correspondingly disassembled, so that the storage and the storage are facilitated, and when the reference part is used next time, the reference part 2 can be assembled again.
Optionally, the first adjusting locking mechanism 3 comprises a fastening bolt.
Specifically, the primary function of the first adjusting and locking mechanism 3 is to connect the reference part 2 and the support part 4, and the fastening bolt can be used to meet the requirement. For example, when the bolt is screwed, the reference part 2 and the support part 4 can be fixed, and when the bolt is unscrewed, the association between the reference part and the support part can be released, so that the storage is convenient, and the type of the bolt comprises a hexagon bolt or a U-shaped bolt.
Alternatively, the fixing means 5 comprise at least one pair of initial positions of the pedals arranged oppositely.
Specifically, fixing device 5 is used for fixing the footboard, therefore, the key effect that relation of connection and the fixed form between fixing device 5 and the footboard play to the measurement of footboard stroke, here, fixing device 5 includes at least a pair of fixing bolt that sets up relatively, as shown in fig. 3, the setting of relative position can make the initial position of footboard to the application of force of footboard more symmetrical, also can make the array of initial position of footboard more neat, on the basis that does not influence footboard stroke measurement, can suitably increase the quantity of the initial position of footboard, if can adopt 2 x 2's mode to arrange, make the fixing at the footboard more neat, furthermore, can adopt magnetism to inhale or sticky mode, make the footboard and fixing device 5's connection more smooth and easy inseparable, guarantee measuring effect better.
Optionally, as shown in fig. 4, the fixing device 5 has an "L" shaped extension arm, a long strip-shaped through hole is provided in the extension arm, the fixing adjusting block 6 can slide on the fixing device 5, when the fixing device slides to a suitable size, the fixing device can be fixed by using the second locking adjusting mechanism, the relative position between the fixing device and the fixing adjusting block can be effectively improved by using the long strip-shaped through hole, and the requirement for the position of the pedal can be met to a greater extent.
Alternatively, the measuring tool 9 comprises a straight edge which is mounted to slide freely on a guide rail.
Here, a zero scale such as a straight scale in the measuring tool 9 can be installed at the starting position of the horizontal guide rail 8, which can be selected from different scales according to the actual measuring requirements.
Referring to fig. 5 and fig. 6, in a second aspect of the present invention, there is provided a measuring method based on any one of the measuring devices mentioned in the above embodiments, including:
step S1: establishing a reference plane perpendicular to a horizontal plane based on the reference device, and fixing the measuring mechanism based on the pedal and the reference device; specifically, the reference device is provided with a first level 1 and a reference part 2, before the reference plane is established, a fixing device 5 of the measuring mechanism is required to be fixed on a position where the pedal is convenient to fix, for example, on a partial plane of the pedal, in order to ensure that the measuring mechanism is not interfered by the measuring mechanism and can stably track the pedal in the process of rotating the pedal, so that the relative stillness between the measuring mechanism and the pedal is obtained;
further, the fixing device 5 based on the pedal fixing measuring mechanism comprises: when the fixing device 5 is fixed on the pedal and the pedal is in a free state, the horizontal guide rail 8 is adjusted to be in a horizontal state through the fixing adjusting block 6 by referring to the second level meter 7, the fixing device 5 and the fixing adjusting block 6 are locked by the second adjusting and locking mechanism 10, and here, the measuring mechanism and the pedal are connected in a free state, so that data bedding is made for the rotating state of the subsequent pedal.
Specifically, the basic steps of establishing the reference plane include:
in the process of using the measuring tool 9, the reference device is used as a measuring point during measurement, the position of a specific measuring point is based on the actual operation of the pedal and the measuring tool 9, the measuring mechanism is fixed at the position where the pedal is convenient to fix, the rotation of the pedal can not be influenced when the pedal is fixed, and when the reference value display reference part 2 in the first level 1 is vertical to the horizontal plane, the first adjusting and locking mechanism 3 is locked and locked.
Step S2: determining an initial position P of a pedal, wherein the initial position of the pedal is a position of the pedal in a free state;
and step S3: measuring the rotation radius R of the pedal;
the rotation radius R of the pedals can be expressed as a linear distance between OP, further, in the use specification of some pedals, specific parameters of the rotation radius R value of the pedals can be introduced, if the specific parameters exist, the specific parameters can be used as measuring bases, in order to improve the measurement precision of the rotation radius of the pedals, an angle measuring instrument can be used for assisting in length measurement during measurement, when the angle measuring instrument displays 0 degrees, the measurement result of the length measuring instrument such as a straight ruler is judged to be effective, and the average value can also be obtained through multiple measurements.
And step S4: determining an end position Q of the pedal, wherein the end position Q is a position of the pedal in a finished rotating state, and when the pedal rotating shaft rotates, the pedal rotates at a fixed angle;
at this time, the end position Q of the pedal is a position at which the pedal finishes rotating, and here, the initial position of the pedal changes from point P to point Q.
Step S5: based on the end point position Q of the pedal, making a point Q ' projected on a horizontal reference plane, obtaining the length a of Q ' by using a measuring tool 9, extending O ' Q on the horizontal reference plane and intersecting at a point R, and obtaining the length b of QR based on the measuring tool 9;
specifically, as shown in fig. 6, the projection method includes taking the end point position Q of the pedal as a point Q ' where the perpendicular line of the supporting portion 4 intersects the horizontal reference plane and Q ' at Q ', so as to obtain a point Q ' projected on the horizontal reference plane, and further, obtaining the length a of Q ' by using the measuring tool 9, where the measuring tool 9 used may be a ruler or other length measuring tool 9 meeting the precision requirement, and the measurement may be repeated for multiple times to obtain the average value of a;
specifically, extend O' Q in the horizontal reference plane and intersect at point R, and obtain the length b of QR based on the measurement tool 9;
further extending PP ' and RQ in opposite directions, an intersection O ' is obtained, where O ' P intersects OQ at a point S.
Because in the rotation process, guarantee that measuring mechanism's angle is unchangeable, rotate the footboard, consequently:
angle OQO '= angle OPO' = alpha, and because:
∠OSP=∠Q’SQ；
according to the similar triangle theorem, it can be demonstrated that: Δ OSP- Δ O' SQ,
thus, it is possible to obtain: angle POQ =anglep 'O' R.
Step S7: acquiring an angle beta of pedal rotation from an initial position P of the pedal to a terminal position Q of the pedal based on the length a and the length b; also, according to the condition that two straight lines are parallel and the same azimuth angle is equal, i.e., P ' O '/Q ' Q, can be obtained
β=∠POQ=∠P’O’R= Q’QR=arccos(a/b)。
Step S8: the pedal stroke S is calculated based on the angle β and the rotation radius R of the pedal.
Specifically, according to the arc length formula, s = β/180 × pi × R, the final pedal stroke can be obtained.
The measuring method provided by the invention is based on a geometric principle by means of a reference device and a measuring mechanism in a measuring device, calculates the angular displacement generated in the pedal stroke process, and further obtains the actual arc displacement of the pedal, namely the pedal stroke, by the length relation of the pedal and an arc length formula.
In an embodiment of the present invention, the free position is a state where the pedal is in a state where no external force is applied.
Specifically, in the initial position of the pedal, when the pedal is in a state without external force application, after the included angle of the pedal is fixed, a more stable numerical value can be obtained for calculation of angular displacement generated in the subsequent pedal stroke process, preferably, after stable pedal stroke data is completely obtained, different pedals can be replaced for experiment, but if the same pedal is used, the included angle of the pedal can be selected to be fixed, so that later-stage calculation and processing as well as sensing and calculation of specific pedal characteristics are facilitated.
In an embodiment of the present invention, the pedal rotation axis origin O is a position of the rotation axis in the initial position state of the pedal, and the rotation radius R is a distance between the rotation axis origin O and the initial position P of the pedal.
Specifically, the reason for selecting the pedal rotation shaft original point O as the initial position of the pedal includes that the pedal rotation shaft original point O is the position of the center of a circle in the calculation of the pedal stroke, and because the rotation radius R is the distance between the rotation shaft original point O and the initial position P of the pedal, if the rotation radius R deviates from the position of the pedal rotation shaft original point O, the measurement of the rotation radius R of the pedal is inaccurate, and the accuracy of the pedal stroke measurement is affected.
In one embodiment of the invention, another end position of the pedal is measured, the fixed adjusting block 6 is rotated, and the fixed adjusting block 6 is used for locking the pedal after the pedal is rotated each time;
and repeatedly rotating the pedals to different positions to obtain the lengths a and b of the different positions so as to obtain the angle of the pedals rotating from the initial positions of the pedals to the final positions of the different pedals.
The other end position includes, but is not limited to, at least one other position except the end position of the pedal for the first time, wherein, during measurement, the fixed adjusting block 6 can be adjusted, because the fixed adjusting block 6 can be connected with the fixing device 5 through the second adjusting and locking mechanism 10, the fixing device 5 can be fixedly connected with the pedal, and the pedal can rotate to obtain different end positions so as to facilitate multiple measurements; wherein, it is to be noted that, before each adjustment by the fixed adjusting block 6, the reference part 2 in the reference device needs to be placed near the measuring mechanism, and according to the first level 1, the reference part 2 is adjusted to be vertical to the horizontal plane, and then the first adjusting and locking mechanism 3 is locked;
further, the pedal is rotated to any terminal position, a measuring tool 9 such as a ruler is extended to the reference part 2, and the measuring distance a is recorded; then the fixed adjusting block 6 is adjusted to be in a horizontal state and locked, the straight ruler is extended to the reference part 2, and the measuring distance b is recorded. And (3) continuing to rotate the pedal to the position of the next point to be measured, repeating the measurement and adjustment processes, and respectively recording the measurement distances bn and an, wherein the position of the point to be measured can be determined based on the test requirements, for example, 10%, 20%, 30%, 8230and 100% of accelerator positions are respectively selected as the position of the point to be measured based on the accelerator pedal signal.
The measured values are filled into a test data recording table, and corresponding pedal travel results can be directly generated through a calculation tool template mentioned in the measurement principle.
Through multiple measurements, the interference of error data in the pedal stroke can be effectively eliminated, the corresponding pedal stroke result is directly generated through the calculation tool template, and the working efficiency of pedal stroke calculation can be improved.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device (such as a computer-based system, processing module, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions).
The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A pedal stroke measuring device, comprising: the device comprises a reference device and a measuring mechanism, wherein the reference device is used for providing a vertical reference surface for the measuring mechanism;
the reference device comprises a first level gauge, a reference part, a first adjusting and locking mechanism and a support part, wherein the first level gauge is fixedly connected to the reference part, and the reference part is locked with the support part through the first adjusting and locking mechanism;
measuring mechanism, including fixing device, fixed regulating block, second spirit level, horizontal guide, measuring tool and second regulation locking mechanism, fixing device is used for fixed footboard, at least one second spirit level of fixed regulating block fixed connection, fixing device with fixed regulating block passes through second regulation locking mechanism and changes relative position, horizontal guide initial position with the coincidence of the pivot position of fixed regulating block, horizontal guide can place at least one measuring tool.
2. A measuring device according to claim 1, wherein the first level is fixedly connected to a free end of a reference part, and the first level, the second level comprise gimbaled levels, ghost levels and/or frame levels.
3. A measuring device according to claim 1, wherein the reference portion is a panel, one end of the reference portion opposite to the free end being rotatably connected to the support portion.
4. A measuring device according to claim 1 or 3, wherein the first adjustment locking mechanism comprises a fastening bolt.
5. A measuring device as claimed in claim 1, characterized in that the fixing means comprise at least one pair of oppositely arranged fixing bolts.
6. The measuring device of claim 1, wherein the fixing device has an "L" -shaped extension arm, the fixed adjusting block is slidable on the fixing device, and the starting position of the horizontal guide rail coincides with the position of the rotating shaft of the fixed adjusting block.
7. A measuring device as claimed in claim 1, characterised in that the measuring means comprises a ruler which is mountable on a guide rail to slide freely.
8. A measuring method based on the measuring apparatus according to any one of claims 1 to 7, comprising:
establishing a reference plane perpendicular to a horizontal plane based on the reference device, and fixing the measuring mechanism based on the pedal and the reference device;
determining an initial position P of a pedal, wherein the initial position of the pedal is a position of the pedal in a free state;
measuring the rotation radius R of the pedal;
determining an end position Q of the pedal, wherein the end position Q is a position of the pedal for ending the rotation state;
based on the end point position Q of the pedal, making a point Q ' projected on a horizontal reference plane, obtaining the length a of the Q ' by using a measuring tool, extending O ' Q on the horizontal reference plane and intersecting at a point R, and obtaining the length b of QR based on the measuring tool;
acquiring an angle beta of pedal rotation from an initial position P of the pedal to a terminal position Q of the pedal based on the length a and the length b;
the pedal stroke S is calculated based on the angle β and the rotation radius R of the pedal.
9. The method of claim 8, wherein the rotation axis origin O of the pedal is the position of the rotation axis at the initial position state of the pedal, and the rotation radius R is the distance between the rotation axis origin O and the initial position P of the pedal.
10. The method of claim 8, wherein another end position of the pedal is measured, and the fixed adjusting block is rotated to lock the pedal after each rotation of the pedal;
and repeatedly rotating the pedals to different positions to obtain the lengths a and b of the different positions so as to obtain the angles of the pedals from the initial positions of the pedals to the end positions of the different pedals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210688964.4A CN115265435B (en) | 2022-06-17 | 2022-06-17 | Pedal travel measuring device and measuring method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210688964.4A CN115265435B (en) | 2022-06-17 | 2022-06-17 | Pedal travel measuring device and measuring method |
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| CN115265435A true CN115265435A (en) | 2022-11-01 |
| CN115265435B CN115265435B (en) | 2024-07-09 |
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| CN202210688964.4A Active CN115265435B (en) | 2022-06-17 | 2022-06-17 | Pedal travel measuring device and measuring method |
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| CN113029077A (en) * | 2019-12-25 | 2021-06-25 | 北京宝沃汽车股份有限公司 | Pedal travel testing method and system |
| CN113310453A (en) * | 2021-06-04 | 2021-08-27 | 安徽合力股份有限公司 | Forklift accelerator pedal angle and stroke testing method and measuring device |
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| DE4134690A1 (en) * | 1991-10-21 | 1993-04-22 | Iti Idee Ingenieurbuero Zur Fo | Measuring shape, size and spatial orientation surfaces of roller-shaped workpieces - measuring surfaces according to rotation angle and transforming measurement points into workpiece co-ordinate system |
| CN102818547A (en) * | 2011-06-07 | 2012-12-12 | 上汽通用五菱汽车股份有限公司 | Tool for measuring travel of vehicular clutch pedal |
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| CN115265435B (en) | 2024-07-09 |
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