CN115585723A - Electric bicycle size measuring device and method - Google Patents
Electric bicycle size measuring device and method Download PDFInfo
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- CN115585723A CN115585723A CN202211219075.XA CN202211219075A CN115585723A CN 115585723 A CN115585723 A CN 115585723A CN 202211219075 A CN202211219075 A CN 202211219075A CN 115585723 A CN115585723 A CN 115585723A
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- electric bicycle
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
Abstract
The invention provides a size measuring device and method of an electric bicycle, which mainly comprise a reference platform, a marking line, a pair of long-side rails, a gantry support, a short-side rail, a pair of handlebar fixing upright columns, a pair of posture confirmation laser instruments and a distance measuring mechanism.
Description
Technical Field
The present invention relates to the field of measurement, and in particular to a metrology apparatus and method for measuring length, width and thickness characterised by the use of optical methods.
Background
The electric bicycle is a mechatronic personal transportation tool which is provided with a motor, a controller, a storage battery, a rotating handle brake handle and other operating components and a display instrument system on the basis of a common bicycle by taking the storage battery as an auxiliary energy source. After the electric bicycle is produced, the size of the electric bicycle needs to be measured to determine whether the electric bicycle meets the technical safety standards for electric bicycles (GB 17761-2018).
When the size of the electric bicycle is measured, the bracket of the electric bicycle needs to be retracted, the vehicle needs to be kept vertical, and weights need to be applied to the electric bicycle when necessary. In order to stabilize the body of the electric bicycle in the prior art, the wheel is generally clamped by a clamping block matched with the cylinder, and the clamping mode has the following technical defects:
(1) when the clamping force is small, the vehicle is easy to incline, especially when weights are loaded;
(2) when the clamping force is larger, the deformation of the tire is larger, so that the result exceeds the allowable range, or when weights are loaded, the deformation of the tire is influenced, so that the result exceeds the deviation;
(3) for a small-wheel-diameter disc brake vehicle, a brake disc is easily clamped by the clamping block, so that the vehicle body is inclined or a tire is suspended, and the test cannot be implemented;
(4) the cylinder needs compressed air, the noise is large, the structure is complex, and the air path is easy to interfere with the measurement of the size;
(5) when the size of the two-wheeled vehicle is measured, the measurement point position is difficult to determine, and the width, the length and the like are taken as the surface space, so that the direct measurement cannot be directly carried out by using measuring tools;
(6) the related size measurement items are more, multiple platforms are needed to be matched for use, the movement and multiple posture adjustment of the vehicle are related, and a large amount of time is occupied for operators.
When the pedal ground clearance of the electric bicycle is tested, if the diameters of the front wheel and the rear wheel are not consistent, the longitudinal symmetry plane of the bicycle cannot be determined, and the test cannot be finished.
In addition, patent No. ZL 202120372837.4 discloses an electric bicycle size measuring device, which in addition to some of the technical defects mentioned above, has low precision and poor consistency due to the fact that the plumb assembly is mainly used for measuring the size.
Disclosure of Invention
The invention provides a device and a method for measuring the size of an electric bicycle, which aim to realize that a plurality of tests can be carried out by carrying out attitude adjustment on the electric bicycle once and have higher measurement precision.
In one aspect, the present invention provides a dimension measuring device for an electric bicycle, including a reference platform, wherein the reference platform further includes:
the marking line is arranged on the top surface of the reference platform and is superposed with the long-edge symmetry axis of the reference platform;
the long-edge rails are distributed on two sides of the marking line and are parallel to the marking line;
the gantry support is provided with a pair of support legs which are arranged on the long-edge track and can slide on the long-edge track;
the short edge rail is arranged on the top surface of the reference platform, is positioned between the two long edge rails and is perpendicular to the marking line;
the handlebar fixing upright columns are respectively positioned on two sides of the marking line, and the bottom ends of the handlebar fixing upright columns are arranged on the short edge tracks and can slide or be locked on the short edge tracks;
a pair of posture confirmation laser instruments which are positioned at two ends of the marked line and are correspondingly arranged; and
the distance measuring mechanisms are respectively a first distance measuring mechanism arranged on the long-edge track, a second distance measuring mechanism arranged on the top frame of the gantry support and a third distance measuring mechanism arranged on the side frame of the gantry support.
As an improvement, the first distance measuring mechanism comprises a first laser, a first vernier bracket which can slide on the long-edge track and is used for fixing the first laser, and a first straight steel ruler which is arranged on the reference platform, wherein a vernier of the first vernier bracket points to the first straight steel ruler;
the second distance measuring mechanism comprises a second laser, a second guide rail fixed at the bottom of the top frame, a second vernier support which can slide on the second guide rail and is used for fixing the second laser, and a second straight steel ruler arranged on the top frame, wherein a vernier of the second vernier support points to the second straight steel ruler;
third range finding mechanism includes the third laser instrument, is fixed in the third guide rail of side frame side can slide on the third guide rail, and be used for fixing the third vernier support of third laser instrument to and set up the third straightedge on the side frame, the vernier of third vernier support is directional third straightedge.
As a further improvement, the cursor bracket comprises a quick-release base which can facilitate the disassembly of the laser, a cursor fixing seat which is positioned at the bottom of the quick-release base and is used for fixing the cursor, a guide base which is used for supporting the cursor fixing seat, and a screw rod which penetrates through the guide base and the cursor fixing seat; the screw rod, the guide base and the vernier fixing seat jointly form a screw rod nut mechanism, and the guide base translates under the limiting of the guide base along with the rotation of the screw rod.
Above-mentioned improvement is braking the back to cursor support, through rotatory lead screw for the cursor fixing base can carry out the translation, realizes the fine setting to the quick detach base, thereby drives the laser instrument and further aims at electric bicycle's corresponding part, obtains more accurate measuring result.
As a further improvement, the bicycle brake device further comprises a brake mechanism respectively used for preventing the vernier support and/or the handlebar fixing upright post from sliding, and the brake mechanism comprises a brake base, a pair of brake outer plates, a pair of brake friction plates and a screw rod; the middle part of each braking outer plate is respectively and rotatably fixed on two sides of the braking base, the top part of each braking outer plate is penetrated by the screw rod and is in threaded connection with the screw rod, and one side opposite to the bottom part of each braking outer plate is respectively and fixedly provided with a braking friction plate. According to the improvement, the lower parts of the two braking outer sheets move oppositely by rotating the screw rod, so that the braking friction sheets clamp the guide rail, and the vernier support is braked.
As an improvement, the first distance measuring mechanism comprises a first laser, a first encoder bracket which can slide on the long-edge track and is used for fixing the first laser, a single-circle absolute value magnetic encoder is arranged at the bottom of the first encoder bracket, and a roller of the single-circle absolute value magnetic encoder abuts against the side surface of the reference platform;
the second distance measuring mechanism comprises a second laser, a second guide rail fixed at the bottom of the top frame, and a second encoder bracket which can slide on the second guide rail and is used for fixing the second laser, wherein a single-turn absolute value magnetic encoder is arranged at the bottom of the second encoder bracket, and a roller of the single-turn absolute value magnetic encoder is abutted against the side surface of the top frame;
third range finding mechanism includes the third laser instrument, is fixed in the third guide rail of side frame side can gliding on the third guide rail, and be used for fixing the third encoder support of third laser instrument, third encoder support bottom is provided with single circle absolute value magnetic encoder, single circle absolute value magnetic encoder's gyro wheel supports tightly the another side of top frame.
As a further improvement, the encoder bracket comprises a quick-release base which can facilitate the disassembly of the laser, an encoder fixing base which is arranged at the bottom of the quick-release base and is used for fixing the single-turn absolute value magnetic encoder, a guide base which is used for supporting the encoder fixing base, and a screw rod which penetrates through the guide base and the cursor fixing base; the screw rod, the guide base and the vernier fixing seat jointly form a screw rod nut mechanism, and the guide base translates under the limiting of the guide base along with the rotation of the screw rod.
As a further improvement, the bicycle brake device further comprises a brake mechanism respectively used for preventing the encoder bracket and/or the handlebar fixing upright post from sliding, wherein the brake mechanism comprises a brake base, a pair of brake outer plates, a pair of brake friction plates and a screw rod; the middle part of each braking outer plate is respectively and rotatably fixed on two sides of the braking base, the top parts of the braking outer plates are penetrated by the screw rods and are in threaded connection, and one side, opposite to the bottom part of the braking outer plate, of the braking outer plate is respectively and fixedly provided with a braking friction plate.
As an improvement, the device also comprises a pair of 25-degree test blocks which are respectively placed on two sides of the marking line and used for judging whether the distance between the pedals of the electric bicycle and the ground is qualified or not.
In another aspect, the present invention provides a method for measuring a dimension of an electric bicycle, which is characterized by using the above-mentioned apparatus for measuring a dimension of an electric bicycle and adopting the following steps:
step one, confirming whether the total weight of an assistant driver and a weight on the electric bicycle meets the safety technical specification of the electric bicycle;
secondly, detecting whether the marked line is clear, if the marked line is fuzzy, drawing the line again, and if the marked line is clear, opening the posture confirmation laser instrument to enable a vertical laser line transmitted by the posture confirmation laser instrument to coincide with a central straight line;
step three, placing the electric bicycle on the reference platform and adjusting the position of the bicycle body to enable two ends of the handlebar to be positioned between two handlebar fixing upright columns, adjusting the positions of the front wheel and the rear wheel to enable the center of the tire grounding point to fall on a marking line, and adjusting the inclination angle of the bicycle body to enable the vertical laser line to be aligned with the center lines of the front wheel and the rear wheel;
moving the handlebar fixing upright post to clamp two ends of the handlebar, locking the handlebar fixing upright post, and checking whether the vehicle body shifts;
fifthly, using the first distance measuring mechanism to enable the first laser to be aligned to the front end and the rear end of the body of the electric bicycle respectively, reading the reading on the first straightedge pointed by the cursor respectively, and acquiring length data of the body of the electric bicycle;
step six, using the first distance measuring mechanism to enable the first laser to be aligned to a front shaft and a rear shaft of a body of the electric bicycle respectively, reading readings on the first straightedge pointed by the cursor respectively, and obtaining vehicle wheelbase data;
step seven, using the second distance measuring mechanism to enable the second laser to respectively align with two ends of a handlebar of the electric bicycle, the width of the bicycle body, the width of a crank, the width of the outline of the bicycle and the width of a tailstock;
and step eight, using the third distance measuring mechanism to enable the third laser to be respectively aligned to the top of a handlebar, the top of a saddle and the top of a tail frame of the electric bicycle, and respectively reading the reading on the third straightedge pointed by the cursor.
As an improvement, in the fourth step, the method further includes the following steps:
if the electric bicycle is provided with the shock absorber, the auxiliary driver needs to ride on the vehicle in a riding sitting posture after wearing the weights;
if the electric bicycle is provided with the pedals, the two feet are placed on the pedals, otherwise, the two feet are placed on the front fork and keep the riding sitting posture in the whole process and cannot move;
two 25-degree test blocks are placed on two sides of a middle shaft of the vehicle body, the straight line of the tip end of each 25-degree test block is adjusted to coincide with the marked line, a pedal crank is rotated, and the pedal is qualified when not contacting with the test blocks.
Above-mentioned technical scheme, for prior art, have following beneficial effect:
(1) By arranging the three groups of distance measuring mechanisms, the electric bicycle can complete multi-project tests on one platform, and only the bicycle body needs to be adjusted once in the test process;
(2) The measurement of various sizes of the electric bicycle can be realized by moving each vernier support to slide on the guide rail, so that the operation is simpler and more convenient;
(3) By using a laser for positioning and alignment, higher accuracy is obtained with respect to the plumb line.
Drawings
In order to more clearly explain the technical solution of the present invention, the drawings used in the embodiments will be briefly described below.
FIG. 1 is an isometric view of an electric bicycle dimension measuring device in accordance with the present invention;
FIG. 2 is an enlarged view of the structure at I in FIG. 1;
FIG. 3 is an enlarged view of the structure at II in FIG. 1;
FIG. 4 is an enlarged view of the structure at III in FIG. 1;
FIG. 5 is an enlarged view of the structure at IV in FIG. 1;
FIG. 6 is a schematic view of the cursor support with the brake mechanism attached;
FIG. 7 is an isometric view of the electric bicycle dimension measuring device of the present invention during testing;
FIG. 8 is a schematic view of an encoder support according to the present invention;
wherein: 1. a reference platform; 2. marking lines; 3. a long-side track; 4. a gantry support; 5. a short edge track; 6. the handlebar fixes the pillar; 7. a posture confirmation laser; 8. a first distance measuring mechanism; 801. a first laser; 803. a first cursor holder; 804. a first straightedge of steel; 9. a second distance measuring mechanism; 902. a second guide rail; 903. a second cursor holder; 904. a second straightedge of steel; 10. a third distance measuring mechanism; 102. a third guide rail; 103. a third cursor holder; 104. a third straightedge of steel; 11. a cursor; 12. a 25 ° test block; 13. a braking mechanism; 131. a brake base; 132. a brake outer plate; 133. braking the friction plate; 134. a screw; 141. a quick-release base; 142. a cursor fixing seat; 143. a guide base; 144. a screw rod; 15. a height adjustable leg; 161. an encoder fixing seat; 162. a single-turn absolute value magnetic encoder; 163. and (4) a roller.
It should be understood that the drawings are not necessarily drawn to scale. It is obvious that the above-mentioned figures are only some embodiments of the invention, and that for a person skilled in the art, without inventive effort, further figures can be obtained with reference to these figures.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
It should be noted that if directional indications (such as up, down, left, right, front, back, top, bottom, inner, outer, vertical, transverse, longitudinal, counterclockwise, clockwise, circumferential, radial, axial \8230 \ 8230;) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative positional relationship, movement, etc. of the components at a specific posture (as shown in the figure), and if the specific posture is changed, the directional indications are correspondingly changed.
Example one
The present embodiment provides a dimension measuring device for an electric bicycle, which is mainly composed of a reference platform 1, a reticle 2, a pair of long-side rails 3, a gantry support 4, a short-side rail 5, a pair of handlebar fixing columns 6, a pair of attitude determination laser instruments 7 and a distance measuring mechanism, as shown in fig. 1.
Specifically, as shown in fig. 1, the reticle 2 is disposed on the top surface of the reference platform 1 and coincides with the long-side symmetry axis thereof. The pair of long-side rails 3 are distributed on both sides of the reticle 2 and are parallel to the reticle 2. The pair of legs of the gantry support 4 is disposed above the long-side rail 3 and can slide on the long-side rail 3. The short edge rail 5 is arranged on the top surface of the reference platform 1, is positioned between the two long edge rails 3 and is perpendicular to the marked line 2. The handlebar fixing posts 6 are respectively located on both sides of the marking 2, and the bottom ends thereof are both disposed on the short-side rails 5 and can slide or be locked on the short-side rails 5. The pair of posture confirmation lasers 7 are provided at both ends of the reticle 2 and are arranged correspondingly.
The distance measuring mechanisms are respectively a first distance measuring mechanism 8 arranged on the long-edge track 3, a second distance measuring mechanism 9 arranged on the top frame of the gantry support 4 and a third distance measuring mechanism 10 arranged on the side frame of the gantry support 4, and the second distance measuring mechanism 9 and the third distance measuring mechanism 10 on the gantry support 4 can be moved and slide to measure the electric bicycle at different angles, so that the influence on measurement caused by light shielding is avoided.
Specifically, as shown in fig. 1 and fig. 2, the first distance measuring mechanism 8 includes a first laser 801, a first cursor support 803 capable of sliding on the long-side track 3 and used for fixing the first laser 801, and a first straightedge 804 disposed on the reference platform 1, wherein the cursor 11 of the first cursor support 803 points to the first straightedge 804.
Specifically, as shown in fig. 1 and fig. 3, the second distance measuring mechanism 9 includes a second laser (not shown in the figure), a second guide rail 902 fixed at the bottom of the top frame, a second cursor support 903 capable of sliding on the second guide rail 902 and used for fixing the second laser, and a second straight steel edge 904 arranged on the top frame, wherein the cursor 11 of the second cursor support 903 points to the second straight steel edge 904.
Specifically, as shown in fig. 1 and 4, the third distance measuring mechanism 10 includes a third laser (not shown in the figure), a third guide rail 102 fixed on the side surface of the side frame, a third cursor support 103 capable of sliding on the third guide rail 102 and used for fixing the third laser, and a third straightedge 104 arranged on the side frame, wherein a cursor 11 of the third cursor support 103 points to the third straightedge 104.
Specifically, as shown in fig. 4 and 5, the electric bicycle dimension measuring device further includes a braking mechanism 13 for preventing the bracket of the cursor 11 and/or the handlebar fixing post 6 from sliding, respectively, which includes a brake base 131, a pair of brake outer plates 132, a pair of brake friction plates 133 and a screw 134; the middle of each braking outer plate 132 is rotatably fixed on both sides of the braking base 131, the top is penetrated and threaded by a screw 134, and the opposite side of the bottom is fixed with a braking friction plate 133. By rotating the screw 134, the lower portions of the two outer braking sheets 132 move toward each other, so that the braking friction sheets 133 clamp the guide rail, and the support and/or the braking of the cursor 11 are/is realized. When the brake mechanism 13 is mounted on the handlebar fixing post 6, the brake base 131 is fixed to the bottom of the handlebar fixing post 6.
Specifically, as shown in fig. 6, the cursor 11 bracket includes a quick-release base 141 for facilitating the laser to be detached, a cursor fixing base 142 located at the bottom of the quick-release base 141 and used for fixing the cursor 11, a guiding base 143 for supporting the cursor fixing base 142, and a screw rod 144 penetrating through the guiding base 143 and the cursor fixing base 142; the screw 144, the guide base 143 and the cursor fixing seat 142 together form a screw 144 nut mechanism, and the guide base 143 translates under the limit of the guide base 143 along with the rotation of the screw 144. After the support of the cursor 11 is braked, the cursor fixing seat 142 can be translated by rotating the screw rod 144, so that the quick-release base 141 can be finely adjusted, the laser is driven to further align to a corresponding component of the electric bicycle, and a more accurate measurement result is obtained. When brake mechanism 13 is mounted on the support of cursor 11, its brake base 131 is fixed with guide base 143.
Specifically, as shown in fig. 1, the dimension measuring apparatus for an electric bicycle further includes a pair of 25 ° test blocks 12 respectively disposed on both sides of the marking 2 for determining whether the distance between the pedals of the electric bicycle and the ground is acceptable. Four corners of the reference platform 1 are provided with height-adjustable support legs 15 to ensure that the reference platform 1 keeps horizontal.
The invention also provides a size measuring method of the electric bicycle, which adopts the size measuring device of the electric bicycle shown in figures 1 to 6, and the size measuring device of the electric bicycle shown in figure 7 specifically comprises the following steps.
Step one, confirming whether the total weight of an assistant driver and a weight on the electric bicycle meets the safety technical specification of the electric bicycle.
Specifically, whether the vehicle has a shock absorber or not is checked, and if yes, a driver cooperation test needs to be assisted; the total weight of the assistant driver and the weight is confirmed to be 85kg.
And step two, detecting whether the marked line 2 is clear, if so, drawing a line again, and if so, opening the posture confirmation laser instrument 7 to ensure that a vertical laser line transmitted by the posture confirmation laser instrument 7 is superposed with a central straight line, thereby ensuring that the vehicle body is vertical.
And step three, placing the electric bicycle on the reference platform 1, adjusting the position of the bicycle body to enable two ends of the handlebar to be positioned between the two handlebar fixing upright posts 6, adjusting the positions of the front wheel and the rear wheel to enable the center of the grounding point of the tire to fall on the marked line 2, and adjusting the inclination angle of the bicycle body to enable the vertical laser line to be aligned with the center lines of the front wheel and the rear wheel.
And step four, after the handlebar fixing upright post 6 is moved to clamp the two ends of the handlebar, the handlebar fixing upright post 6 is locked, and whether the vehicle body shifts or not is checked to prevent the handlebar from rotating or swinging left and right, so that the vehicle body posture is unchanged in the whole measuring and testing process.
And step five, using the first distance measuring mechanism 8 to enable the first laser 801 to be respectively aligned to the front end and the rear end of the electric bicycle body, respectively reading the reading on the first straight steel ruler 804 pointed by the cursor 11, and acquiring the length data of the bicycle body.
And step six, using the first distance measuring mechanism 8 to enable the first laser 801 to be respectively aligned with the front shaft and the rear shaft of the electric bicycle body, respectively reading the reading on the first straightedge 804 pointed by the cursor 11, and acquiring the wheelbase data of the bicycle.
And seventhly, using a second distance measuring mechanism 9 to enable a second laser to respectively align with two ends of a handlebar of the electric bicycle, the width of the bicycle body, the width of a crank, the width of the outline of the bicycle and the width of a tail frame of the bicycle.
And step eight, using the third distance measuring mechanism 10 to enable the third laser to be respectively aligned to the top of the handlebar, the top of the saddle and the top of the tailstock of the electric bicycle, and respectively reading the reading on the third steel ruler 104 pointed by the cursor 11.
Specifically, the method comprises four steps of:
if the electric bicycle is provided with the shock absorber, the electric bicycle assists a driver to ride on the vehicle in a riding sitting posture after wearing weights;
if the electric bicycle is provided with the pedals, the two feet are placed on the pedals, otherwise, the two feet are placed on the front fork and keep the riding sitting posture in the whole process and cannot move;
two 25-degree test blocks 12 are placed on two sides of a middle shaft of a vehicle body, the straight line of the tip end of each 25-degree test block 12 is adjusted to coincide with the marked line 2, a pedal crank is rotated, and the pedal is qualified when not contacting the test blocks.
Example two
On the basis of the first embodiment, the cursor 11 bracket and the cursor 11 are replaced by an encoder bracket and a single-turn absolute value magnetic encoder 162, as shown in fig. 8, the encoder bracket includes a quick-release base 141 for facilitating the disassembly of the laser, an encoder fixing base 161 located at the bottom of the quick-release base 141 and used for fixing the single-turn absolute value magnetic encoder 162, a guide base 143 used for supporting the encoder fixing base 161, and a screw rod 144 penetrating through the guide base 143 and the cursor fixing base 142; the screw 144, the guide base 143 and the cursor fixing seat 142 together form a screw 144 nut mechanism, and the guide base 143 translates under the limit of the guide base 143 along with the rotation of the screw 144. The diameter of the roller 163 on the single turn absolute magnetic encoder 162 is known, and when the encoder bracket is located at one end of the guide rail, the single turn absolute magnetic encoder 162 is zeroed, and the roller 163 rotates with the sliding of the encoder bracket, so that the single turn absolute magnetic encoder 162 detects the number of turns the roller 163 has made, thereby obtaining a more accurate reading than the measurement of the cursor 11 in conjunction with a straight steel ruler.
The present invention has been described in detail, and the principle and the embodiments of the present invention are explained in detail by using specific examples, and the descriptions of the above examples are only used to help understand the method of the present application and the core idea thereof, and the content of the present specification should not be construed as limiting the present invention.
Claims (10)
1. An electric bicycle size measuring device, includes the reference platform, its characterized in that, the reference platform still includes:
the marking line is arranged on the top surface of the reference platform and is superposed with the long-edge symmetry axis of the reference platform;
the long-edge rails are distributed on two sides of the marking line and are parallel to the marking line;
the pair of support legs of the gantry support are arranged on the long-edge track and can slide on the long-edge track;
the short edge rail is arranged on the top surface of the reference platform, is positioned between the two long edge rails and is perpendicular to the marking line;
the bottom ends of the handlebar fixing upright columns are arranged on the short edge tracks and can slide or be locked on the short edge tracks;
a pair of attitude determination laser instruments respectively arranged at two ends of the marked line; and
the distance measuring mechanisms are respectively a first distance measuring mechanism arranged on the long-edge track, a second distance measuring mechanism arranged on the top frame of the gantry support and a third distance measuring mechanism arranged on the side frame of the gantry support.
2. The electric bicycle dimension measuring device of claim 1, wherein the first distance measuring mechanism comprises a first laser, a first vernier bracket which can slide on the long-side track and is used for fixing the first laser, and a first straightedge arranged on a reference platform, wherein a vernier of the first vernier bracket points to the first straightedge;
the second distance measuring mechanism comprises a second laser, a second guide rail fixed at the bottom of the top frame, a second cursor support which can slide on the second guide rail and is used for fixing the second laser, and a second straight steel rule arranged on the top frame, wherein a cursor of the second cursor support points to the second straight steel rule;
third range finding mechanism includes the third laser instrument, is fixed in the third guide rail of side frame side can slide on the third guide rail, and be used for fixing the third vernier support of third laser instrument to and set up the third straightedge on the side frame, the vernier of third vernier support is directional third straightedge.
3. The electric bicycle dimension measuring device of claim 2, wherein the cursor bracket comprises a quick-release base for facilitating the removal of the laser, a cursor holder located at the bottom of the quick-release base for holding the cursor, a guide base for supporting the cursor holder, and a lead screw passing through the guide base and the cursor holder; the screw rod, the guide base and the vernier fixing seat jointly form a screw rod nut mechanism, and the guide base translates under the limit of the guide base along with the rotation of the screw rod.
4. The electric bicycle size measuring device according to claim 1, wherein the first distance measuring mechanism comprises a first laser, a first encoder bracket which can slide on the long-side track and is used for fixing the first laser, a single-circle absolute value magnetic encoder is arranged at the bottom of the first encoder bracket, and a roller of the single-circle absolute value magnetic encoder abuts against the side surface of the reference platform;
the second distance measuring mechanism comprises a second laser, a second guide rail fixed at the bottom of the top frame, and a second encoder bracket which can slide on the second guide rail and is used for fixing the second laser, wherein a single-turn absolute value magnetic encoder is arranged at the bottom of the second encoder bracket, and a roller of the single-turn absolute value magnetic encoder is abutted against the side surface of the top frame;
third range finding mechanism includes the third laser instrument, is fixed in the third guide rail of side frame side can slide on the third guide rail, and be used for fixing the third encoder support of third laser instrument, third encoder support bottom is provided with single circle absolute value magnetic encoder, single circle absolute value magnetic encoder's gyro wheel supports tightly the another side of top frame.
5. The electric bicycle dimension measuring device of claim 4, wherein the encoder bracket comprises a quick-release base for facilitating the disassembly of the laser, an encoder holder located at the bottom of the quick-release base for holding the single-turn absolute value magnetic encoder, a guide base for supporting the encoder holder, and a lead screw penetrating through the guide base and the cursor holder; the screw rod, the guide base and the vernier fixing seat jointly form a screw rod nut mechanism, and the guide base translates under the limiting of the guide base along with the rotation of the screw rod.
6. The electric bicycle size measuring device according to any one of claims 1 to 5, further comprising a pair of 25 ° testing blocks respectively disposed on both sides of the marking line for determining whether the pedal-to-ground distance of the electric bicycle is acceptable.
7. The electric bicycle dimension measuring device of claim 2 or 3, further comprising a brake mechanism for preventing the vernier support and/or the handlebar fixing post from sliding, respectively, comprising a brake base, a pair of brake outer plates, a pair of brake friction plates, and a screw; the middle part of each braking outer plate is respectively and rotatably fixed on two sides of the braking base, the top part of each braking outer plate is penetrated by the screw rod and is in threaded connection with the screw rod, and one side opposite to the bottom part of each braking outer plate is respectively and fixedly provided with a braking friction plate.
8. The electric bicycle size measuring device according to claim 4 or 5, further comprising a braking mechanism for preventing the encoder bracket and/or the handlebar fixing post from sliding, respectively, comprising a brake base, a pair of brake outer plates, a pair of brake friction plates, and a screw; the middle part of each braking outer plate is respectively and rotatably fixed on two sides of the braking base, the top parts of the braking outer plates are penetrated by the screw rods and are in threaded connection, and one side, opposite to the bottom part of the braking outer plate, of the braking outer plate is respectively and fixedly provided with a braking friction plate.
9. A method of measuring a dimension of an electric bicycle using the measuring apparatus of any one of claims 1 to 8, comprising the steps of:
step one, confirming whether the total weight of an assistant driver and a weight on the electric bicycle meets the safety technical specification of the electric bicycle;
secondly, detecting whether the marked line is clear, if the marked line is fuzzy, drawing the line again, and if the marked line is clear, opening the posture confirmation laser instrument to enable a vertical laser line transmitted by the posture confirmation laser instrument to coincide with a central straight line;
step three, placing the electric bicycle on the reference platform and adjusting the position of the bicycle body to enable two ends of the handlebar to be positioned between two handlebar fixing upright columns, adjusting the positions of the front wheel and the rear wheel to enable the center of the tire grounding point to fall on a marking line, and adjusting the inclination angle of the bicycle body to enable the vertical laser line to be aligned with the center lines of the front wheel and the rear wheel;
moving the handlebar fixing upright post to clamp two ends of the handlebar, locking the handlebar fixing upright post, and checking whether the vehicle body shifts;
fifthly, using the first distance measuring mechanism to enable the first laser to be aligned to the front end and the rear end of the body of the electric bicycle respectively, reading the reading on the first straightedge pointed by the cursor respectively, and acquiring length data of the body of the electric bicycle;
step six, using the first distance measuring mechanism to enable the first laser to be respectively aligned to a front shaft and a rear shaft of a body of the electric bicycle, respectively reading the readings on the first straight steel ruler pointed by the vernier, and acquiring vehicle wheelbase data;
step seven, using the second distance measuring mechanism to enable the second laser to respectively align with two ends of a handlebar of the electric bicycle, the width of the bicycle body, the width of a crank, the width of the outline of the bicycle and the width of a tailstock;
and step eight, using the third distance measuring mechanism to enable the third laser to be respectively aligned to the top of a handlebar, the top of a saddle and the top of a tail frame of the electric bicycle, and respectively reading the reading on the third straightedge pointed by the cursor.
10. The method for measuring the size of the electric bicycle according to claim 9, wherein the fourth step further comprises the steps of:
if the electric bicycle is provided with the shock absorber, the auxiliary driver needs to ride on the vehicle in a riding sitting posture after wearing the weights;
if the electric bicycle is provided with the pedals, the two feet are placed on the pedals, otherwise, the two feet are placed on the front fork and keep the riding sitting posture in the whole process and cannot move;
two 25-degree test blocks are placed on two sides of a middle shaft of the vehicle body, the straight line of the tip end of each 25-degree test block is adjusted to coincide with the marked line, a pedal crank is rotated, and the pedal is qualified when not contacting with the test blocks.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211219075.XA CN115585723A (en) | 2022-09-30 | 2022-09-30 | Electric bicycle size measuring device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116592831A (en) * | 2023-07-17 | 2023-08-15 | 四川护邑科技有限公司 | Laser ranging device with laser marking function |
| CN117073503A (en) * | 2023-10-19 | 2023-11-17 | 山东宏冠车辆有限公司 | Tool for measuring wheelbase of semitrailer |
-
2022
- 2022-09-30 CN CN202211219075.XA patent/CN115585723A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116592831A (en) * | 2023-07-17 | 2023-08-15 | 四川护邑科技有限公司 | Laser ranging device with laser marking function |
| CN116592831B (en) * | 2023-07-17 | 2023-09-08 | 四川护邑科技有限公司 | Laser ranging device with laser marking function |
| CN117073503A (en) * | 2023-10-19 | 2023-11-17 | 山东宏冠车辆有限公司 | Tool for measuring wheelbase of semitrailer |
| CN117073503B (en) * | 2023-10-19 | 2024-02-06 | 山东宏冠车辆有限公司 | Tool for measuring wheelbase of semitrailer |
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