CN112629879B - Device and method for measuring longitudinal passing angle of automobile - Google Patents

Device and method for measuring longitudinal passing angle of automobile Download PDF

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Publication number
CN112629879B
CN112629879B CN202011454133.8A CN202011454133A CN112629879B CN 112629879 B CN112629879 B CN 112629879B CN 202011454133 A CN202011454133 A CN 202011454133A CN 112629879 B CN112629879 B CN 112629879B
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component
claw
scanning
rod
angle
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CN112629879A (en
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徐驰
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Modern Auto Yancheng Co Ltd
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Modern Auto Yancheng Co Ltd
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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only

Abstract

The invention provides a device and a method for measuring the longitudinal passing angle of an automobile, wherein the measuring device comprises: a rod member; the two claw components are arranged on the same side of the two ends of the rod component; a horizontal movement mechanism movably provided on the lever member; a measurement assembly comprising two first sensor components, a scanning component, a second sensor component, a third sensor component and a control component; wherein the two first sensor components are respectively arranged on the corresponding jaw components; the scanning component is arranged on the horizontal moving mechanism, so that the scanning component can move along the extending direction of the rod component along with the horizontal moving mechanism and can move in the direction vertical to the extending direction of the rod component relative to the horizontal moving mechanism, and the control component is used for controlling the motion track of the scanning component; the second sensor component is arranged on the horizontal moving mechanism; the third sensor part is disposed on the scan part. By operating on the side of the vehicle, difficulties with operating on the bottom of the vehicle are avoided.

Description

Device and method for measuring longitudinal passing angle of automobile
Technical Field
The invention relates to the field of automobiles, in particular to an automobile longitudinal passing angle measuring device and a measuring method.
Background
At present, according to the requirements of the relevant national quality standards, the longitudinal passing angle of a motor vehicle needs to be detected before the motor vehicle leaves a factory. The longitudinal passing angle of the automobile is an important parameter of the whole automobile, and the longitudinal passing angle needs to be measured. Most of the existing measuring tools are mechanical, the measuring error is large, and the use and the carrying are inconvenient.
The Chinese patent CN 105334067 provides a device for measuring the longitudinal passing angle of an automobile and a measuring method thereof, the device for measuring the longitudinal passing angle of the automobile comprises a mounting plate, a first lower bottom plate and a second lower bottom plate which are positioned on the same plane, a height measuring plate and a data analyzing and collecting system, wherein the mounting plate comprises a first end surface and a second end surface which are opposite, a sliding groove penetrating through the first end surface and the second end surface is arranged on the mounting plate, the first lower bottom plate and the second lower bottom plate are respectively inserted in the sliding groove in a sliding way through the first end surface and the second end surface, the height measuring plate is vertically arranged on a third end surface of the mounting plate, and the data analyzing and collecting system calculates the longitudinal passing angle according to the measuring results of ultrasonic distance sensors respectively arranged on the first lower bottom plate, the second lower bottom plate and the end surface of the height measuring plate far away from the mounting plate. As shown in fig. 1, the vehicle longitudinal passing angle α is a minimum acute angle formed by intersecting the outer edges of the front and rear wheels with a tangent line at a lower portion of the vehicle body in a side view of the vehicle. And calculating the value of the longitudinal passing angle alpha of the automobile according to a triangle constructed by the values of L1, L2, L3 and H acquired by the device for measuring the longitudinal passing angle of the automobile.
However, the structure is heavy, and when the device is used, the measuring device needs to be placed at the bottom of the vehicle, so that the device is inconvenient to use.
Disclosure of Invention
The invention aims to solve the problems that the structure is heavy, and a measuring device needs to be placed at the bottom of a vehicle when in use, so that the use is inconvenient in the prior art. Provided are an automobile longitudinal passing angle measuring device and a measuring method, which avoid the difficulty of operation at the bottom of a vehicle by operating at the side of the vehicle.
The invention provides a device for measuring the longitudinal passing angle of an automobile, which comprises: the horizontal moving mechanism comprises a rod component, two clamping jaw components, a horizontal moving mechanism and a measuring assembly, wherein the measuring assembly comprises two first sensor components, a scanning component, a second sensor component, a third sensor component and a control component. The two claw members are respectively provided at both ends of the lever member, and the two claw members are provided on the same side of the lever member. The horizontal movement mechanism is movably provided on the lever member in an extending direction of the lever member.
The measurement assembly includes two first sensor components, a scanning component, a second sensor component, a third sensor component, and a control component. The two first sensor components are arranged corresponding to the two claw components, and each first sensor component in the two first sensor components is arranged on the corresponding claw component. The scanning unit is provided to the horizontal movement mechanism so that the scanning unit can move along the extending direction of the rod unit along with the horizontal movement mechanism and can move in a direction perpendicular to the extending direction of the rod unit with respect to the horizontal movement mechanism, and the control unit controls a motion trajectory of the scanning unit. The second sensor component is arranged on the horizontal moving mechanism and used for detecting a second position parameter of the scanning component. The third sensor unit is disposed on the scanning unit for detecting a third position parameter of the critical point of the obstacle detected by the scanning unit.
When the two claw parts are respectively clamped on the outer peripheries of the two tires positioned on the same side of the automobile, the first sensor parts on the two claw parts can detect first position parameters of the two claw parts and transmit the first position parameters to the control part, and the control part obtains the diameters and the relative positions of the two tires according to the received first position parameters.
The scanning component can scan the obstacles of the parts of the automobile chassis from one side and measure a plurality of obstacle critical points, the third sensor component obtains third position parameters of the obstacle critical points and transmits the third position parameters to the control component, and when the scanning component scans the obstacles of the parts of the automobile chassis, the second sensor component transmits the second position parameters of the detected scanning component to the control component in real time.
The control component obtains longitudinal angles according to the diameters and the relative positions of the two tires, the second position parameter and the third position parameter, and the control component obtains the longitudinal passing angle of the automobile according to the minimum value of each longitudinal angle.
By adopting the scheme, the automobile longitudinally passes through the angle measuring device and is operated on the side face of the automobile, so that the difficulty of operation at the bottom of the automobile is avoided. The device has low requirement on the use field, the existing measuring device is a large flat plate, the ground is required to be flat, and if the ground is uneven, the measuring result has great deviation. The device of the invention can measure the vehicle only by not inclining the left side and the right side of the vehicle. The device has small stepping amount and can scan each barrier critical point of the vehicle chassis. The device adopts the sensor to monitor the size, identifies the longitudinal passing angle of the vehicle by the control part according to the principle, has high measurement precision, and can feed back the lateral projection drawing on the bottom of the vehicle.
According to another embodiment of the invention, the two jaw members respectively comprise a jaw frame, a tire jaw arranged around the jaw frame, and a rotary connecting mechanism arranged at the center of the jaw frame. One end of the rotary connecting mechanism is detachably connected with the rod component, and the other end of the rotary connecting mechanism is rotatably connected with the jaw frame; the tire claw comprises at least two claws, each claw is telescopic in the radial direction of the claw frame, and a first sensor component is respectively arranged on each claw.
By adopting the scheme, the device has the advantages that the structure is simplified and light, and one end of the rotating connecting mechanism is detachably connected with the rod component, so that the device can be assembled and disassembled and is convenient to carry. The other end of the rotary connecting mechanism is rotatably connected with the claw frame to ensure that the fixing operation is more convenient when the tire is fixed, and the claw frame can be adjusted to conveniently collect parameters when being positioned by the claw hook. And each claw hook is telescopic along the radial direction of the claw frame, so that tires with various sizes can be matched.
According to another specific embodiment of the invention, the embodiment of the invention discloses an automobile longitudinal passing angle measuring device, wherein the first position parameter comprises the length of the claw hook, a first included angle and the distance between the central positions of the two claw racks; wherein the at least one grapple is positioned vertically above the pole member when the first sensor member detects the first position parameter; the control component establishes a coordinate system by taking the extending direction of the rod component when the rod component is horizontally placed as an abscissa axis and taking the central position of one of the two clamping jaw frames as a coordinate origin; the control component acquires the length of the claw hook and a first included angle in a coordinate system, wherein the first included angle is an included angle between the claw hook positioned vertically above the rod component and an abscissa axis; the control part acquires the distance between the central positions of the two claw frames according to the coordinates of the central positions of the two claw frames in the coordinate system.
By adopting the scheme, the length of the claw hook, the first included angle and the distance between the central positions of the two claw frames can be accurately measured by establishing a coordinate system.
According to another embodiment of the present invention, a device for measuring a longitudinal passing angle of an automobile is disclosed, wherein the at least two hooks include a first hook and two second hooks, the first hook and the two second hooks are both at an angle of 110 °, the two second hooks are at an angle of 140 °, and the first hook is located vertically above the rod member. Each claw hook in at least two claw hooks is detachably connected with the claw frame.
By adopting the scheme, the first claw hook can be kept stably fixed with the tire while being ensured above the rod component. The device has the advantages that the structure is simplified and light, each claw hook in the two claw hooks is detachably connected with the claw frame, the two claw hooks can be assembled and disassembled, and the carrying is convenient.
According to another specific embodiment of the invention, the embodiment of the invention discloses an automobile longitudinal passing angle measuring device, and the rotating connecting mechanism comprises a rotating shaft component, a pin shaft component and a sleeve component. One end of the rotating shaft component is rotationally connected with the jaw frame, so that the rotating shaft component can rotate around the axial direction of the rotating shaft component relative to the jaw frame, the other end of the rotating shaft component is rotationally connected with the sleeve component through the pin shaft component, so that the sleeve component rotates around the axial direction of the pin shaft component relative to the rotating shaft component, and the axial direction of the pin shaft component is perpendicular to the axial direction of the rotating shaft component; the sleeve member is removably connected with the rod component and is provided with a stop member that limits movement of the rod component within the sleeve member.
By adopting the scheme, the pin shaft component is arranged in the jaw part, and the cross-axle universal joint is formed by combining the sleeve component and the rotating shaft component, so that the structure can eliminate the difference of the front wheel base and the rear wheel base and also eliminate the difference of the unequal heights of the centers of the front jaw frame and the rear jaw frame. If the front and rear wheel pitches of the automobile are the same, when the two claw components of the front and rear tires are completely clamped on the tires, the outer plane of the claw frame is parallel to the rod component, but the automobile types with inconsistent front and rear wheel pitches of the automobile on the market are more, the device can absorb the angle between the rod component and the claw frame caused by different front and rear wheel pitches by the rotation of the sleeve component around the axis of the pin shaft component relative to the rotating shaft component. In addition, the device structure of the invention is simplified and light, the sleeve member is detachably connected with the rod component, and the claw component and the rod component can be assembled and disassembled, thereby being convenient for carrying.
According to another embodiment of the invention, the invention discloses a longitudinal passing angle measuring device for an automobile, wherein the scanning component comprises a vertical moving mechanism and a laser scanning component. And, a vertical moving mechanism is movably provided on the horizontal moving mechanism in a direction perpendicular to the extending direction of the rod member, and one end of the vertical moving mechanism is provided with a laser scanning member.
According to another embodiment of the invention, the embodiment of the invention discloses an automobile longitudinal passing angle measuring device, wherein the control part obtains a second position parameter according to the horizontal distance between the position of the laser scanning component and the center of the claw frame in a coordinate system; the control part obtains a third position parameter according to the vertical height between the position of the laser scanning component and the rod part in the coordinate system; and the control component obtains a longitudinal angle in a coordinate system according to the diameters of the two tires, the relative position, the second position parameter and the third position parameter, wherein the longitudinal angle is an included angle between the position of the laser scanning component and tangent lines of the bottoms of the front tire and the rear tire respectively.
According to another embodiment of the invention, the embodiment of the invention discloses a device for measuring the longitudinal passing angle of an automobile. Wherein the moving frame has a through hole and a cavity therein, the through hole having an axial direction identical to the extending direction of the rod member, and a friction wheel assembly disposed in the cavity and contacting the rod member passing through the through hole to link the moving frame to move relative to the rod member in the extending direction of the rod member by rotation of a friction wheel of the friction wheel assembly. The guide groove is arranged on the outer wall of one side of the movable frame and extends along the direction vertical to the axial direction of the through hole; the transmission assembly is arranged on the guide groove and is in transmission connection with the vertical moving mechanism. And the vertical moving mechanism comprises a scanning frame and a transmission rack arranged on the scanning frame. Wherein one end of the scanning frame is fixedly connected with the laser scanning component; the transmission rack is in transmission connection with the transmission assembly and enables the scanning frame and the laser scanning component to move along the extending direction of the guide groove. The control component is respectively connected with the friction wheel component, the transmission component and the laser scanning component.
According to another embodiment of the invention, the embodiment of the invention discloses an automobile longitudinal passing angle measuring device, wherein the rod component comprises a plurality of connecting rods which are connected in sequence, and two ends of each connecting rod are respectively detachably connected with the adjacent connecting rods.
By adopting the scheme, the number of the connecting rods can be selected according to the wheel base of the automobile, so that the automobile wheel base measuring device can be suitable for measuring vehicles with different wheel bases, the rod parts adopt a modular structure, and the number of the connecting rods is superposed behind one connecting rod, so that the automobile wheel base measuring device can be realized. Compared with the existing measuring device, the invention has the advantages of greatly reduced weight and wider adaptability. The device has the advantages that the structure is simplified and light, the device is divided into various mechanism modules, the device can be assembled and disassembled, the carrying is convenient, the tire clamping jaws and the clamping jaw frame can be detached by the clamping jaw part, the rod part is disassembled into a plurality of connecting rods, the scanning part and the horizontal moving mechanism can also be separated from the rod part, the occupied space is less than the space of one tire when all the mechanism modules are accumulated, and the carrying is convenient.
According to another specific embodiment of the invention, the embodiment of the invention discloses an automobile longitudinal passing angle measuring device, the peripheral wall of each connecting rod is symmetrically provided with two positioning grooves along the extending direction of the peripheral wall, and when two adjacent connecting rods are connected, the positioning grooves of the two adjacent connecting rods are aligned; and the internal perisporium of the through-hole in the removal frame is provided with the location boss, and when the connecting rod inserted the through-hole, the location boss was held in the constant head tank.
Adopt above-mentioned scheme, the internal perisporium of the through-hole in the removal frame is provided with the location boss, and the constant head tank alignment of pole member removes the location boss of frame, can conveniently fix a position, makes to connect more stably.
The invention also provides a measuring method of the automobile longitudinal passing angle measuring device, the automobile longitudinal passing angle measuring device adopts the automobile longitudinal passing angle measuring device, and the measuring method comprises the following steps:
the two claw parts are respectively clamped on the outer peripheries of the two tires positioned on the same side of the automobile, and the first position parameters of the two claw parts are measured according to the first sensor parts on the two claw parts, so that the diameters and the relative positions of the two tires are obtained.
And controlling the motion track of the scanning component, enabling the scanning component to scan the obstacles of the parts of the automobile chassis from one side to measure a plurality of obstacle critical points, and at each obstacle critical point, acquiring a second position parameter of the scanning component by using the second sensor component and acquiring a third position parameter of the obstacle critical point by using the third sensor component.
And acquiring a longitudinal angle of each obstacle critical point according to the diameters, the relative positions, the second position parameter and the third position parameter of the two tires, wherein the longitudinal angle is an included angle between each obstacle critical point and tangent lines of the front wheel and the rear wheel.
And identifying a minimum angle according to the longitudinal angle of each obstacle critical point, wherein the minimum angle is the longitudinal passing angle of the automobile.
By adopting the scheme, the measuring method has low requirement on a use site, the ground is required to be flat by the existing measuring method, and if the ground is uneven, the measuring result has great deviation. The invention can measure the left side and the right side of the vehicle only by not inclining. The scanning component has small measurement stepping quantity, can scan each barrier critical point of the vehicle chassis, has high measurement precision of the longitudinal passing angle of the identified vehicle, and can feed back the lateral projection drawing of the bottom of the vehicle.
The invention has the beneficial effects that:
the invention provides the automobile longitudinal passing angle measuring device which is operated on the side surface of the automobile, thereby avoiding the difficulty of operation on the bottom of the automobile. The device has low requirement on the use field, the existing measuring device is a large flat plate, the ground is required to be flat, and if the ground is uneven, the measuring result has great deviation. The device of the invention can carry out measurement only by not inclining the left side and the right side of the vehicle. The device has small stepping amount and can scan each obstacle critical point of the vehicle chassis. The device adopts the sensor to monitor the size, identifies the longitudinal passing angle of the vehicle by the control part according to the principle, has high measurement precision, and can feed back the lateral projection drawing on the bottom of the vehicle. In addition, in various preferred embodiments, on the basis of detachable modularization of each part, the automobile can be assembled and disassembled longitudinally through an angle measuring device, a tire claw and a claw frame can be detached through a claw part, a rod part is disassembled into a plurality of connecting rods, a scanning part and a horizontal moving mechanism can also be separated from the rod part, and all mechanism modules are accumulated to occupy less than one tire space, so that the automobile is convenient to carry. The measuring method of the automobile longitudinal passing angle measuring device is low in requirement on a use site, small in scanning component measuring step amount and high in measuring accuracy.
Drawings
FIG. 1 is a schematic view of a prior art apparatus for measuring a longitudinal passing angle of a vehicle;
FIG. 2 is a schematic structural diagram of a longitudinal passing angle measuring device of an automobile according to an embodiment of the present invention;
FIG. 3 is a schematic view of a jaw member of a longitudinal passing angle measuring device of an automobile according to an embodiment of the present invention;
FIG. 4 is a schematic view of a sleeve member of a vehicle longitudinal pass angle measuring device in an embodiment of the present invention;
FIG. 5 is a schematic diagram of a scanning component of a longitudinal pass angle measuring device for a vehicle according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a rod unit of an automotive longitudinal pass angle measuring device in one embodiment of the present invention;
FIG. 7 is a schematic view of a rod unit of an automotive longitudinal pass angle measurement device in one embodiment of the present invention;
FIG. 8 is an internal schematic view of a horizontal movement mechanism of a vehicle longitudinal pass angle measurement device in one embodiment of the present invention;
FIG. 9 is a schematic view of a scanning trajectory of a scanning unit of a longitudinal pass angle measuring device of an automobile according to an embodiment of the present invention;
FIG. 10 is a schematic view of a longitudinal vehicle passing angle measuring device in accordance with an embodiment of the present invention;
FIG. 11 is a block diagram of the control principle of the longitudinal passing angle measuring device of the vehicle according to one embodiment of the present invention;
fig. 12 is a flowchart of a measuring method of a vehicle longitudinal passing angle measuring apparatus according to an embodiment of the present invention.
Description of the reference numerals:
10: a rod member;
11: a connecting rod;
111: a first connecting rod; 112: a second connecting rod;
12: positioning a groove;
13: a spline groove;
20: a jaw member;
21: a jaw frame;
22: a claw hook;
221: a first claw hook; 222: a second claw hook;
23: a rotating connection mechanism;
231: a shaft member;
232: a pin member;
233: a sleeve member;
234: a stop member;
234 a: an axial pin shaft; 234 b: a radial pin shaft;
30: a horizontal movement mechanism;
31: a movable frame;
311: a through hole; 312: a cavity; 313: positioning boss
32: a guide groove;
33: a friction wheel assembly;
331: a friction wheel; 332: a friction wheel shaft;
34: a transmission assembly;
341: a driving gear; 342: a driven gear;
40: a measurement assembly;
41: a scanning component;
411: a vertical moving mechanism;
4111: a scanning frame; 4112: a drive rack;
412: a laser scanning member.
Detailed Description
The following description is given by way of example of the present invention and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are included to provide a thorough understanding of the invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the present invention.
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Examples
There is provided an automobile longitudinal passing angle measuring apparatus, as shown in fig. 2 and 11, comprising: a rod member 10, two jaw members 20, a horizontal movement mechanism 30, and a measuring assembly 40.
Specifically, two pawl members 20 are provided at both ends of the lever member 10, respectively, and the two pawl members 20 are provided on the same side of the lever member 10. The horizontal movement mechanism 30 is movably provided on the lever member 10 in the extending direction of the lever member 10.
The measuring assembly 40 comprises two first sensor components (not shown in the figures), a scanning component 41, a second sensor component (not shown in the figures), a third sensor component (not shown in the figures) and a control component (not shown in the figures). Two first sensor members are provided corresponding to the two claw members 20, and each of the two first sensor members (not shown) is provided on the corresponding claw member 20. The scanning unit 41 is provided to the horizontal movement mechanism 30 such that the scanning unit 41 is movable along the extending direction of the rod unit 10 along with the horizontal movement mechanism 30 and is movable in a direction perpendicular to the extending direction of the rod unit 10 with respect to the horizontal movement mechanism 30, and the control unit is for controlling the movement locus of the scanning unit 41. A second sensor part (not shown in the drawings) is provided on the horizontal movement mechanism 30 for detecting a second positional parameter of the scanning part 41. A third sensor unit (not shown in the drawings) is provided on the scanning unit 41 for detecting a third position parameter of the critical point of the obstacle detected by the scanning unit 41.
When the two claw members 20 are respectively clamped on the outer peripheries of the two tires positioned on the same side of the automobile, the first sensor members on the two claw members 20 can detect the first position parameters of the two claw members 20 and transmit the first position parameters to the control member, and the control member obtains the diameters and the relative positions of the two tires according to the received first position parameters.
The scanning component 41 can scan the obstacles on the parts of the automobile chassis from one side and measure a plurality of obstacle critical points, the third sensor component acquires the third position parameters of the obstacle critical points and transmits the third position parameters to the control component, and when the scanning component 41 scans the obstacles on the parts of the automobile chassis, the second sensor component transmits the second position parameters of the detected scanning component 41 to the control component in real time.
The control component obtains longitudinal angles according to the diameters and the relative positions of the two tires, the second position parameter and the third position parameter, and the control component obtains the longitudinal passing angle of the automobile according to the minimum value of each longitudinal angle.
More specifically, the rod member 10 may be a rigid rod, or may be adjustable in length, such as a folding rod, a telescopic rod, or a multi-segmented connecting rod 11. When the lever member 10 is a rigid lever, the claw member 20 and the horizontal movement mechanism 30 can move on the rigid lever to fit vehicles of various car lengths.
The two jaw members 20 are structurally and functionally identical and are used to secure and position the tire. The jaw member 20 may be a constant shape jaw or a deformable jaw as in the preferred embodiment described below, or may be a flexible wire-connected jaw or the like.
The control principle of the control part and each part is shown in fig. 11, wherein the control part can be arranged on the scanning part 41, or can be an external terminal which is connected with the scanning part 41 and the horizontal moving mechanism 30 in a communication way. The second sensor component, the third sensor component are position sensors commonly used in the art, such as magnetic angle sensors or linear position sensors. The scanning unit 41 may be a laser scanner or an acoustic scanner as long as it can reflect an obstacle at a corresponding position.
It is to be understood that, in the embodiments of the present invention, the control unit is connected to the electronic device such as the sensor, the motor, or the external terminal in a manner of electrical connection or communication which is commonly used by those skilled in the art, except for the specific description, and the embodiments are not specifically defined. The second sensor member, the third sensor member and the control member are all internal electronic components, and the specific arrangement positions thereof are not limited in this embodiment as long as the first sensor member is secured to the claw member 20, the second sensor member is secured to the horizontal movement mechanism 30, and the third sensor member is secured to the scanning member 41 to perform the monitoring function thereof. The specific structure of the second sensor part, the third sensor part and the control part is therefore not shown in the drawings provided by the present invention.
In use, the front and rear tires on either side (left or right) of a vehicle are measured, two pawl members 20 are mounted on the front and rear wheels, respectively, and the lever member 10 is adjusted to be horizontally positioned. The control unit controls the scanning unit 41 to be movable along the extending direction of the rod unit 10 along with the horizontal moving mechanism 30 and to be movable in a direction perpendicular to the extending direction of the rod unit 10 with respect to the horizontal moving mechanism 30, so that the scanning unit 41 can scan a plurality of critical points of the obstacle under the vehicle according to the motion trajectory of the control scanning unit 41. And obtaining a longitudinal angle at each critical point according to the diameters and relative positions of the two tires, the second position parameter and the third position parameter, and obtaining a minimum value from the longitudinal angle, namely the longitudinal passing angle of the automobile. The first position parameter, the second position parameter, and the third position parameter may be determined according to parameters required by a specific calculation method for calculating the longitudinal passing angle of the vehicle, for example, an angle parameter or a relative distance parameter, which is not particularly limited in this embodiment.
In addition, after all obstacle critical points are obtained, the positions of the corresponding obstacles can be fed back to the control part, and a side projection view of the obstacles at the bottom of the vehicle can be obtained by combining other peripheral equipment (such as a peripheral computer terminal).
It should be understood that the longitudinal passing angle measuring device of the present invention can monitor the axle distance, the tire diameter, the ground line generation, the ground clearance of the vehicle chassis component, the approach angle, the departure angle, the vehicle height, the vehicle length and other parameters of the vehicle by the cooperation of the first sensor component, the second sensor component and the scanning component 41. That is, other parameters may be measured and corresponding data may be obtained by using the device in the present embodiment, and the present embodiment does not specifically limit the use method, and those skilled in the art may use the device according to the use requirement.
By adopting the scheme, the automobile longitudinally passes through the angle measuring device and is operated on the side face of the automobile, so that the difficulty of operation at the bottom of the automobile is avoided. The device has low requirement on the use field, the existing measuring device is a large flat plate, the ground is required to be flat, and if the ground is uneven, the measuring result has great deviation. The device of the invention can measure the vehicle only by not inclining the left side and the right side of the vehicle. The device has small stepping amount and can scan each obstacle critical point of the vehicle chassis. The device adopts the sensor to monitor the size, identifies the longitudinal passing angle of the vehicle by the control part according to the principle, has high measurement precision, and can feed back the lateral projection drawing on the bottom of the vehicle.
According to another embodiment of the present invention, in an automobile longitudinal passing angle measuring device disclosed in the embodiment of the present invention, as shown in fig. 3, each of the two jaw members 20 includes a jaw frame 21, a tire jaw disposed around the jaw frame 21, and a rotation connecting mechanism 23 disposed at a central position of the jaw frame 21. Wherein, one end of the rotary connecting mechanism 23 is detachably connected with the rod component 10, and the other end is rotatably connected with the jaw frame 21; the tyre claw comprises at least two claws 22, each claw 22 being telescopic in the radial direction of the claw beam 21, and a first sensor component is arranged on each claw 22.
Specifically, the rotation connection mechanism 23 may include a rotation connection structure commonly used in the art, such as a rotating shaft, a hinge, a ball snap, a universal joint, etc., and one end of the rotation connection mechanism 23 may be detachably connected with the rod member 10 in a snap-fit manner, a pin-fit manner, or a screw-thread manner, and the embodiment is not particularly limited herein.
The claw hook 22 is stretchable along the radial direction of the claw frame 21, as shown in fig. 3, the claw hook 22 is sleeved on the claw frame 21, a sliding groove may be provided on the claw hook 22, a sliding rail and a limiting structure are provided on the claw frame 21 to enable the claw hook 22 to be slidably connected with the claw frame 21, a stretchable or foldable claw hook 22 may be used, as long as the claw hook 22 is stretchable along the radial direction of the claw frame 21, and the present embodiment does not specifically limit this.
The number of the at least two claws 22 may be selected according to design requirements, and is sufficient to perform the fixing.
By adopting the scheme, the device has a simplified and light structure, and one end of the rotating connecting mechanism 23 is detachably connected with the rod component 10, so that the device can be assembled and disassembled and is convenient to carry. The other end of the rotary connecting mechanism 23 is rotatably connected with the claw frame 21 to ensure that the fixing operation is more convenient when the tire is fixed, and the other end can be adjusted conveniently to collect parameters when the tire is positioned by the claw hook 22. Also, each claw hook 22 is retractable in the radial direction of the claw frame 21, so that it is possible to fit various sizes of tires.
According to another embodiment of the present invention, in the device for measuring the longitudinal passing angle of the automobile disclosed in the embodiment of the present invention, the first position parameter includes the length of the claw hook 22, the first included angle, and the distance between the center positions of the two claw frames 21; wherein the at least one grapple 22 is located vertically above the pole member 10 when the first sensor member detects the first position parameter; the control unit establishes a coordinate system with the extending direction of the lever unit 10 when it is horizontally placed as the axis of abscissa and the central position of one of the two claw frames 21 as the origin of coordinates; and the control part acquires the length of the claw hook 22 and a first included angle in a coordinate system, wherein the first included angle is an included angle between the claw hook 22 positioned vertically above the rod part 10 and an abscissa axis; the control section acquires the distance between the center positions of the two claw frames 21 from the coordinates of the center positions of the two claw frames 21 in the coordinate system.
It will be appreciated that the jaw member 20 is not otherwise limited in operation except that one of the claws 22 is required to be oriented vertically upwardly but at a less critical angle, and that the mounting of the front and rear tire jaws is arbitrary (e.g., the distance from the outer side of the claw 22 to the center of the claw holder 21 is not equally required), i.e., the center of the claw holder 21 is not the same as the center of the tire, etc.
The combination of the claw member 20 and the rod member 10 with the coordinate system, the coordinate origin is set as the center point of the claw frame 21, the axis of the rod member 10 is the X-axis, and the measurement angle is calculated by using the monitoring point of the obstacle critical point of the plane coordinate system simulation scanning member 41.
For convenience of understanding, taking fig. 10 as an example, taking the central position of the jaw frame 21 of the left jaw member 20 as the origin of coordinates, the lengths of the jaws 22 on the jaw members 20 of the left wheel are f1, f2, f3, and the first included angle is a 1; the lengths of the claws 22 on the claw part 20 of the right wheel are r1, r2 and r3 respectively, and the first included angle is a 2; the distance between the center positions of the two claw frames 21 is l 2.
By adopting the scheme, the length of the claw hook 22, the first included angle and the distance between the central positions of the two claw frames 21 can be accurately measured by establishing a coordinate system.
According to another embodiment of the present invention, which discloses an apparatus for measuring a longitudinal passing angle of an automobile, as shown in fig. 3, at least two grapples 22 include a first grapple 221 and two second grapples 222, an angle between the first grapple 221 and the two second grapples 222 is 110 °, an angle between the two second grapples 222 is 140 °, and the first grapple 221 is located vertically above the rod member 10.
Specifically, in the initial position, the lever member 10 is perpendicular to the first claw 221 of the claw member 20 on the tire, and in actual operation, the claw member 20 cannot be completely perpendicular to the lever member 10 with the first claw 221 when it grips the tire, and relative rotation of the lever member 10 and the first claw 221 of the claw member 20 is absorbed by rotation of the rotary link mechanism 23 relative to the claw frame 21.
With the above-described arrangement, it is possible to ensure that the first claw hook 221 is held stably fixed to the tire while being above the lever member 10.
In a preferred embodiment, each claw 22 of the at least two claws 22 is detachably connected to the claw holder 21.
Specifically, each of the at least two claws 22 may be detachably connected to the claw frame 21 by a common detachable connection method such as a socket connection or a snap connection.
By adopting the scheme, the device has a simplified and portable structure, and each claw hook 22 in the two claw hooks 22 is detachably connected with the claw frame 21, so that the device can be assembled and disassembled and is convenient to carry.
According to another embodiment of the present invention, which discloses a device for measuring a longitudinal passing angle of an automobile, as shown in fig. 2, 3 and 4, the rotation connecting mechanism 23 includes a rotation shaft member 231, a pin shaft member 232 and a sleeve member 233. One end of the rotating shaft member 231 is rotatably connected to the jaw frame 21 so that the rotating shaft member 231 can rotate around the axial direction of the rotating shaft member 231 relative to the jaw frame 21, and the other end of the rotating shaft member is rotatably connected to the sleeve member 233 through the pin member 232 so that the sleeve member 233 rotates around the axial direction of the pin member 232 relative to the rotating shaft member 231, and the axial direction of the pin member 232 is perpendicular to the axial direction of the rotating shaft member 231; the sleeve member 233 is detachably connected with the rod unit 10, and the sleeve member 233 is provided with a stopper member 234, the stopper member 234 restricting the movement of the rod unit 10 within the sleeve member 233.
Specifically, the sleeve member 233 is detachably connected to the pole unit 10 in a snap-fit or socket-fit manner. The position-limiting member 234 may be a pin, a snap, a boss, or other common position-limiting structures.
In the present embodiment, as shown in fig. 4, the stopper member 234 includes an axial pin 234a and a radial pin 234b, the rod member 10 passes through the sleeve members 233 of the front and rear jaw members 20, and an annular groove (not shown) is formed on an outer wall surface of a portion of the rod member 10 engaged with the sleeve members 233 of the front and rear jaw members 20, the edge of the sleeve member 233 on one of the two jaw members 20 is apertured, when the rod unit 10 is inserted through the sleeve member 233 and the axial pin 234a is inserted through the hole and the annular groove of the rod unit 10, and fixed to the sleeve member 233, the rod unit 10 can be axially positioned in the sleeve member 233, facilitating the adjustment and installation of the rod unit 10, at the same time, the radial pin 234b is mounted on the sleeve member 233 of the claw member 20 of the front and rear tires, and the radial pin 234b abuts against the rod member 10, ensuring the locking of the axial length of the rod member 10.
The tire claw has a cavity 312 in the claw hook 22 to fit over the claw frame 21, so that the claw hook 22 can move along the claw frame 21, and the tire claw moves on the claw frame 21, thereby realizing the gripping action of the claw member 20 to tires with different diameters. The jaw frame 21 has a central opening through which the rotation shaft member 231 is mounted on the jaw frame 21, so that the rotation shaft member 231 can rotate relative to the jaw frame 21. The sleeve member 233 is connected to the shaft member 231 via the pin member 232, and the sleeve member 233 can rotate relative to the shaft member 231 around the center of the pin member 232.
By adopting the above scheme, the pin shaft member 232 is arranged in the claw part 20, and the cross axle universal joint is formed by combining the sleeve member 233 and the rotating shaft member 231, so that the structure can eliminate the difference of the front and rear wheel tracks and the difference of the unequal heights of the centers of the front and rear claw frames 21. If the front and rear wheel tracks of the automobile are the same and the two claw parts 20 of the front and rear tires are completely clamped on the tires, the outer plane of the claw frame 21 is parallel to the rod component 10, but most automobile models with inconsistent front and rear wheel tracks of the automobile on the market can absorb the angle between the rod component 10 and the claw frame 21 caused by the inconsistent front and rear wheel tracks through the rotation of the sleeve component 233 around the axis of the pin component 232 relative to the rotating shaft component 231. In addition, the device of the present invention has a simplified and light structure, and the sleeve member 233 is detachably connected to the rod member 10, so that the claw member 20 and the rod member 10 can be assembled and disassembled for easy carrying.
According to another embodiment of the present invention, which discloses an apparatus for measuring a longitudinal passing angle of an automobile, as shown in fig. 5, the scanning unit 41 includes a vertical moving mechanism 411 and a laser scanning member 412. Also, a vertical moving mechanism 411 is movably provided on the horizontal moving mechanism 30 in a direction perpendicular to the extending direction of the lever member 10, and one end of the vertical moving mechanism 411 is provided with a laser scanning member 412.
Specifically, the vertical moving mechanism 411 may be a movable structure driven by a motor and including a transmission structure commonly used in the art, such as a gear, a rack, a pulley, a slider, or a transmission rod, as long as the laser scanning member 412 can be moved in the vertical direction along with the vertical moving mechanism 411, and the embodiment is not particularly limited herein.
The laser scanning member 412 is provided at one end of the vertical moving mechanism 411 and moves with it in the vertical direction in fig. 5, while the vertical moving mechanism 411 is provided at the horizontal moving mechanism 30 and moves with the horizontal moving mechanism 30 in the horizontal direction, so that the laser scanning member 412 can perform scanning in both the vertical and horizontal directions. The laser scanning component 412 scans towards the symmetrical plane of the vehicle, the laser scanning component 412 moves up and down in the vertical moving mechanism 411, and the laser scanning component 412 completes the lateral scanning of the obstacle of the part at the lower part of the chassis of the vehicle in the lifting process and records the lateral scanning in the control part (the control part is not shown in the invention).
When the device is used, the horizontal moving mechanism 30 drives the laser scanning component 412 to move transversely along the rod component 10, and the laser scanning component 412 completes one up-down scanning every certain step, so that the side scanning of the chassis part obstacle between the front tire and the rear tire can be recorded in the control part.
More specifically, as shown in fig. 9, the initial position is scanned, and the horizontal movement mechanism 30 is manually adjusted to be beyond the front tire while the laser scanning member 412 is positioned at the lowermost end. After the device is powered on, the laser scanning component 412 is driven by the vertical moving mechanism 411 to vertically move upwards, laterally scan the obstacles of the vehicle chassis parts, and record the positions of the critical points of the obstacles in the control part. When the laser scanning member 412 rises to the highest position, the horizontal moving mechanism 30 drives the laser scanning member 412 to step by 1mm along the extending direction of the rod component 10, the laser scanning member 412 is driven by the vertical moving mechanism 411 to move downwards, the vehicle chassis part obstacle is laterally scanned, and the position of the obstacle critical point is recorded in the control component. When the laser scanning member 412 moves down to the lowest position, the horizontal movement mechanism 30 drives the laser scanning member 412 to step by 1mm along the extending direction of the rod unit 10. This is repeated, and when the horizontal movement mechanism 30 is advanced to the rear tire side, the scanning is stopped.
According to another embodiment of the present invention, in the longitudinal passing angle measuring device for an automobile disclosed in the embodiment of the present invention, the control unit obtains the second position parameter according to the horizontal distance between the position of the laser scanning member 412 and the center of the claw frame 21 in the coordinate system; the control means obtains a third position parameter based on the vertical height of the position of the laser scanning member 412 from the rod unit 10 in the coordinate system; the control unit obtains a longitudinal angle in the coordinate system, which is an angle between the position of the laser scanning member 412 to the tangent of the bottom of the front tire and the rear tire, respectively, with the diameters of the two tires and the relative position, the second position parameter, and the third position parameter.
Specifically, as shown in fig. 10, with the jaw frame 21 of the left jaw member 20 as the origin of coordinates, the horizontal distance between the position of the laser scanning member 412 and the center of the jaw frame 21 in the coordinate system is l1, the vertical height between the position of the laser scanning member 412 and the rod member 10 is h, and the longitudinal angle is Θ.
The first sensor component includes an angle sensor and a position sensor, both of which appear in this paragraph, and are merely for ease of understanding and for ease of explanation. The gripper frame 21 has three position sensors inside the end of the gripper 22 that is fitted into the tire, and can monitor the distances from the three tire grippers 22 to the rotating shaft member 231, respectively, as shown in fig. 10, and the distances from the gripper 22 of the front and rear gripper members 20 to the rotating shaft member 231 are f1, f2, f3, r1, r2, and r3, respectively. An angle sensor is provided at the connection between the claw frame 21 and the rotation shaft member 231, and the angles α 1 and α 2 of the lever member 10 with respect to the first claws 221 on the left and right tires in fig. 10, respectively, can be monitored. Thus, the diameter of the tire is calculated according to the distance and the angle. The sleeve members 233 of the pawl members 20 have position sensors therein to monitor the distance l2 between the front and rear sleeve members 233 as the pawl members 20 are applied to the front and rear tires, respectively.
The horizontal movement mechanism 30 has a second sensor unit therein, which can detect the distance l1 of the horizontal movement (i.e., the laser scanning unit 412) relative to the sleeve member 233 (i.e., the shaft member 231) of the claw unit 20. The laser scanning member 412 has a third sensor means located therein which monitors the distance h of the laser scanning member 412 relative to the mast unit 10.
The working principle of the invention is as follows:
the control unit defines the center of the sleeve member 233 (i.e., the center of the rotational shaft member 231) of the pawl unit 20 (left wheel in fig. 10) of the front wheel as the origin of coordinates, and the axis of the lever unit 10 as the X axis. The diameters and positions of the front and rear wheels are calculated by the control unit based on the measurement contents f1, f2, f3, r1, r2, r3, α 1, α 2, and l2 of the sensors. When the laser scanning means 412 scans at each critical point of the chassis obstacle, l1 and h are recorded in the control unit. And the control component automatically calculates a tangent included angle between the obstacle point and the front and rear tire circles as a longitudinal angle theta in a coordinate system by a geometric method according to the measured content of the coordinates of each obstacle point. And from the beginning of scanning to the end of scanning, each obstacle point corresponds to a theta value, the control component judges the minimum theta value after the end of scanning, and feeds back the position of the obstacle corresponding to the minimum theta value, namely the longitudinal passing angle of the automobile.
According to another embodiment of the present invention, which discloses a longitudinal passing angle measuring device for a vehicle, as shown in fig. 5 and 8, the horizontal moving mechanism 30 includes a moving frame 31, a guide groove 32, a friction wheel assembly 33 and a transmission assembly 34. Wherein the moving frame 31 has a through hole 311 and a cavity 312 therein, the axial direction of the through hole 311 is the same as the extending direction of the rod member 10, and the friction wheel assembly 33 is disposed in the cavity 312 and is in contact with the rod member 10 passing through the through hole 311 to link the moving frame 31 to move in the extending direction of the rod member 10 with respect to the rod member 10 by the rotation of the friction wheel assembly 33. The guide groove 32 is provided on one side outer wall of the moving frame 31 and extends in a direction perpendicular to the axial direction of the through hole 311; the transmission assembly 34 is disposed on the guide slot 32 and is in transmission connection with the vertical moving mechanism 411.
And the vertical moving mechanism 411 includes a scanning frame 4111 and a driving rack 4112 provided on the scanning frame 4111. Wherein one end of the scanning frame 4111 is fixedly connected with the laser scanning member 412; the driving rack 4112 is drivingly connected to the driving assembly 34, and moves the scanning frame 4111 and the laser scanning member 412 along the extending direction of the guide slot 32. The control unit is connected to the friction wheel assembly 33, the transmission assembly 34 and the laser scanning member 412, respectively.
Specifically, the transmission assembly 34 may include a gear, and a person skilled in the art may select a common transmission structure such as a cam, a transmission rod, a transmission belt, etc. according to design requirements, and the transmission assembly 34 further includes a necessary driving source, such as a motor. The friction wheel assembly 33 at least comprises a friction wheel, and other transmission parts can be added according to design requirements.
For convenience of illustration, taking fig. 5 as an example, in the present embodiment, the transmission assembly 34 includes a driving gear 341, a driven gear 342, a motor, and a driven rotating shaft for fixing the driven gear 342, and the friction wheel assembly 33 includes a friction wheel 331 and a necessary motor, and a rotating shaft for fixing the friction wheel 331, and other transmission structures can be selected according to design requirements in the art, specifically:
the motor and the movable frame 31 are fixedly connected, the driving gear 341 and the motor are fixedly connected, the driven rotating shaft and the movable frame 31 are fixedly connected, the driven gear 342 and the driven rotating shaft are rotatably connected, the guide groove 32 and the movable frame 31 are fixedly connected, the friction wheel rotating shaft 332 and the movable frame 31 are fixedly connected, the friction wheel 331 and the friction wheel rotating shaft 332 are rotatably connected, the driven gear 342 and the driven rotating shaft are rotatably connected, and the driving gear 341 and the driven gear 342 are in gear engagement.
The driving rack 4112 is engaged with the driving gear 341 and the driven gear 342 of the horizontal movement mechanism 30, and the scanning frame 4111 is in clearance fit with the guide groove 32 of the horizontal movement mechanism 30 and can move only up and down. After the device circular telegram, scanning unit 41 moves up along guide way 32 under the drive of drive assembly 34, driving motor drives driving gear 341 clockwise rotation promptly, driving gear 341 drives driven gear 342 anticlockwise rotation, because two gear teeth number and modulus are unanimous, so drive the transmission rack 4112 of both sides and move up, and the speed is unanimous, transmission rack 4112 drives scanning unit 41 and moves up in guide way 32, scanning unit 41 is by scanning frame 4111, laser scanning component 412, transmission rack 4112 three fixed connection together, can move up together. Similarly, when the motor drives the driving gear 341 to rotate counterclockwise, the scanning unit 41 moves downward in the guiding slot 32.
The friction wheel itself has a motor inside (similar to the hub motor of an electric bicycle), when the motor inside the friction wheel does work, the rotor inside the motor rotates together with the friction wheel, but the friction wheel rotating shaft 332 does not rotate. The moving frame 31 is formed with a through hole 311 through which the rod member 10 passes and a cavity 312 for receiving the rod member 10, and the rod member 10 passes through the moving frame 31 to be in clearance fit with an inner wall of the cavity 312 of the moving frame 31. The friction wheel is a rough concave surface and is in close contact with the rod member 10, and when the friction wheel is powered on, the friction force between the friction wheel and the rod member 10 drives the moving frame 31 to move along the rod member 10, i.e., the friction wheel drives the horizontal motor to move on the rod member 10 along the extending direction of the rod member 10.
According to another embodiment of the present invention, which discloses an automobile longitudinal passing angle measuring device, as shown in fig. 6 and 7, a rod member 10 includes a plurality of connecting rods 11 connected in sequence, and both ends of each connecting rod 11 are detachably connected to adjacent connecting rods 11.
Specifically, the connection mode that the two ends of the connecting rod 11 are detachably connected with the adjacent connecting rod 11 respectively may be a threaded connection, a clamping connection or a pin connection, and in this embodiment, the connecting rods are mutually clamped by splines.
For convenience of explanation, as shown in fig. 7, the two connecting rods 11 connected to each other are defined as a first connecting rod 111 and a second connecting rod 112 in the present embodiment. Wherein, one end of the first connecting rod 111 is provided with a ring groove, and the other end is internally provided with a spline groove 13; meanwhile, one end of the second connecting rod 112 has a spline, and the other end has the same spline groove 13 as the other end of the first connecting rod 111. The length of the rod member 10 is variable, and the number of the second connecting rods 112 can be determined according to the wheelbase of the automobile, and the first connecting rod 111 serves only as a head member of the rod member 10.
In use, as shown in fig. 2 to 7, the rod member 10 passes through the sleeve members 233 of the front and rear jaw members 20, the edges of the sleeve members 233 are formed with holes, and when the first connecting rod 111 passes through the sleeve members 233 and the ring groove of the first connecting rod 111 is aligned with the holes of the sleeve members 233, the axial pins 234a pass through the holes and are fixed to the sleeve members 233, so that the rod member 10 can be axially positioned in the sleeve members 233, and the radial pins 234b are mounted on the sleeve members 233 of the front and rear jaw members 20, and the radial pins 234b respectively abut against the rod member 10, thereby securing the axial length between the first connecting rod 111 and the second connecting rod 112.
By adopting the scheme, the number of the connecting rods 11 can be selected according to the wheel base of the automobile, so that the measuring device can be suitable for measuring vehicles with different wheel bases, the rod component 10 adopts a modular structure, and the number of the connecting rods 11 is superposed behind one connecting rod 11, so that the measuring device can be realized. Compared with the existing measuring device, the invention has the advantages of greatly reduced weight and wider adaptability. The device has a simplified and light structure, is divided into a plurality of mechanism modules, can be assembled and disassembled, and is convenient to carry, wherein the claw part 20 can detach the tire claw from the claw frame 21, the rod part 10 is disassembled into a plurality of connecting rods 11, the scanning part 41 and the horizontal moving mechanism 30 can also be detached from the rod part 10, and all the mechanism modules occupy less than one tire space in accumulation, so that the device is convenient to carry.
According to another embodiment of the present invention, in the device for measuring the longitudinal passing angle of an automobile disclosed in the embodiment of the present invention, as shown in fig. 7 and 8, the peripheral wall of each connecting rod 11 is symmetrically provided with two positioning grooves 12 along the extending direction thereof, and when two adjacent connecting rods 11 are connected, the positioning grooves 12 of the two adjacent connecting rods 11 are aligned. And the inner circumferential wall of the through hole 311 in the moving frame 31 is provided with a positioning boss 313, and when the connection rod 11 is inserted into the through hole 311, the positioning boss 313 is received in the positioning groove 12.
Specifically, as shown in fig. 7 and 8, for example, the edge of each connecting rod 11 is symmetrically provided with positioning grooves 12, when the spline of the second connecting rod 112 is inserted into the spline groove 13 of the first connecting rod 111, the positioning grooves 12 are aligned, and the first connecting rod 111 and the second connecting rod 112 are fixedly connected in the axial direction to form a rod member 10 with a certain length.
The inner peripheral wall of the through hole 311 in the moving frame 31 is provided with a positioning boss 313, and the positioning groove 12 of the lever member 10 is aligned with the positioning boss 313 of the moving frame 31, so that the positioning can be conveniently performed, and the connection is more stable.
In use, taking the embodiment in fig. 5 as an example, the front and rear tires on either side (left or right side) of a single vehicle are measured, and the three claws 22 of the front claw member 20 are fitted over the claw frame 21, while the three tire claws 22 are respectively brought into close contact with the sidewall and tread of the tire, with the first claw 221 of the claw member 20 facing upward as much as possible. The second connecting rods 112 are spline-fitted into the spline grooves 13 of the first connecting rods 111 such that the positioning grooves 12 are aligned, and the number of the second connecting rods 112 is selected according to the wheel base of the vehicle, and the second connecting rods 112 are successively engaged to constitute the rod unit 10. The rod member 10 is inserted into the sleeve members 233 of the claw members 20 on the front wheel, the scanning frame 4111 of the scanning unit 41, the moving frame 31 of the horizontal moving mechanism 30, and the sleeve members 233 of the claw members 20 on the rear wheel in this order, and the axial pins 234a are inserted when the ring grooves of the first connecting rod 111 are aligned with the positioning holes of the sleeve members 233 of the claw members 20 on the front wheel, and the radial pins 234b are inserted into the sleeve members 233 of the two claw members 20 to lock the rod members 10 when the laser scanning member 412 is at the lowest point of the vertical moving mechanism 411 by gravity along with the horizontal moving mechanism 30.
The embodiment also provides a measuring method of the automobile longitudinal passing angle measuring device, the automobile longitudinal passing angle measuring device adopts the automobile longitudinal passing angle measuring device, as shown in fig. 12, the measuring method comprises the following steps:
the two claw components 20 are respectively clamped on the outer peripheries of the two tires positioned on the same side of the automobile, and the diameters and the relative positions of the two tires are obtained by measuring first position parameters of the two claw components 20 according to the first sensor components on the two claw components 20.
The motion track of the scanning unit 41 is controlled, and the scanning unit 41 scans obstacles of the parts of the chassis of the automobile from one side to measure a plurality of obstacle critical points, and at each obstacle critical point, the second sensor unit obtains a second position parameter of the scanning unit 41, and the third sensor unit obtains a third position parameter of the obstacle critical point.
And acquiring a longitudinal angle of each obstacle critical point according to the diameters, the relative positions, the second position parameter and the third position parameter of the two tires, wherein the longitudinal angle is an included angle between each obstacle critical point and tangent lines of the front wheel and the rear wheel.
And identifying a minimum angle according to the longitudinal angle of each obstacle critical point, wherein the minimum angle is the longitudinal passing angle of the automobile.
Specifically, as shown in fig. 10, the control unit defines the center of the sleeve member 233 (i.e., the center of the rotation shaft member 231) of the claw unit 20 of the front wheel (the left wheel in fig. 10) as the origin of coordinates, and the axis of the rod unit 10 as the X axis. The diameters and positions of the front and rear wheels are calculated in the control unit on the basis of the measurement contents f1, f2, f3, r1, r2, r3, α 1, α 2, l2 of the sensors. When the laser scanning means 412 scans at each critical point of the chassis obstacle, l1 and h are recorded in the control unit. The control section determines the measurement contents of the coordinates of each obstacle point in the coordinate system based on the above-mentioned measurement contents.
Then, an inverse trigonometric function is used to automatically calculate a tangent included angle between the obstacle point and the front and rear tire circles as a longitudinal angle theta. And from the beginning of scanning to the end of scanning, each obstacle point corresponds to a theta value, the control component judges the minimum theta value after the end of scanning, and feeds back the position of the obstacle corresponding to the minimum theta value, namely the longitudinal passing angle of the automobile.
Here, the scanning movement locus of the scanning unit 41 is as shown in fig. 9, and the laser scanning member 412 is located at the lowermost end from the scanning initial position. Then the scanning point of the scanning component 41 moves upwards to scan the obstacle of the vehicle chassis component laterally, and the position of the critical point of the obstacle is recorded in the control component. After the vehicle is raised to the highest position or the scanning in the vertical direction is completed, the scanning component 41 moves horizontally for a certain distance (for example, 1mm or 2mm), then moves downwards from the uppermost end, laterally scans the obstacles of the vehicle chassis parts, records the positions of the critical points of the obstacles in the control component, and moves horizontally after reaching the lowermost end. This is repeated, and when the horizontal movement mechanism 30 is advanced to the rear tire side, the scanning is stopped.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, taken in conjunction with the specific embodiments thereof, and that no limitation of the invention is intended thereby. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims (11)

1. An automobile longitudinal passing angle measuring device, comprising:
a rod member;
two claw members that are provided at both ends of the lever member, respectively, and that are provided at the same side of the lever member;
a horizontal movement mechanism provided on the lever member movably in an extending direction of the lever member;
a measurement assembly comprising two first sensor components, a scanning component, a second sensor component, a third sensor component, and a control component; wherein
The two first sensor components are arranged corresponding to the two claw components, and each first sensor component in the two first sensor components is arranged on the corresponding claw component;
the scanning unit is provided to the horizontal movement mechanism so that the scanning unit is movable along an extending direction of the rod unit along with the horizontal movement mechanism and is movable in a direction perpendicular to the extending direction of the rod unit with respect to the horizontal movement mechanism, and the control unit controls a motion trajectory of the scanning unit;
the second sensor component is arranged on the horizontal moving mechanism and used for detecting a second position parameter of the scanning component;
the third sensor component is arranged on the scanning component and used for detecting a third position parameter of the obstacle critical point detected by the scanning component;
when the two claw parts are respectively clamped on the outer peripheries of two tires positioned on the same side of an automobile, the first sensor parts on the two claw parts can detect first position parameters of the two claw parts and transmit the first position parameters to the control part, and the control part obtains the diameters and the relative positions of the two tires according to the received first position parameters;
the scanning component can scan obstacles of parts of the automobile chassis from one side and measure a plurality of obstacle critical points, the third sensor component acquires third position parameters of the obstacle critical points and transmits the third position parameters to the control component, and when the scanning component scans the obstacles of the parts of the automobile chassis, the second sensor component transmits the second position parameters of the scanning component to the control component in real time;
the control component obtains longitudinal angles according to the diameters and relative positions of the two tires, the second position parameter and the third position parameter, and the control component obtains the longitudinal passing angle of the automobile according to the minimum value of each longitudinal angle。
2. The automotive longitudinal pass angle measuring device of claim 1, wherein each of the two jaw members includes a jaw frame, a tire jaw disposed around the jaw frame, and a rotation link mechanism disposed at a center position of the jaw frame; wherein the content of the first and second substances,
one end of the rotary connecting mechanism is detachably connected with the rod component, and the other end of the rotary connecting mechanism is rotatably connected with the jaw frame;
the tire claw includes at least two claws each of which is retractable in a radial direction of the claw frame, and the first sensor member is provided on each of the claws, respectively.
3. The vehicle longitudinal passing angle measuring device according to claim 2,
the first position parameters comprise the length of the claw hook, a first included angle and the distance between the central positions of the two claw racks; wherein
At least one said claw hook being located vertically above said lever member when said first sensor member detects said first position parameter;
the control component establishes a coordinate system by taking the extending direction of the rod component when the rod component is horizontally placed as an abscissa axis and taking the central position of one of the two clamping jaw frames as a coordinate origin; and is
The control component acquires the length of the claw hook and the first included angle in the coordinate system, wherein the first included angle is an included angle between the claw hook positioned vertically above the rod component and the abscissa axis;
the control part acquires the distance between the central positions of the two jaw frames according to the coordinates of the central positions of the two jaw frames in the coordinate system.
4. The device according to claim 3, wherein the at least two claws include a first claw and two second claws, the first claw and the two second claws are both at an angle of 110 °, the angle between the two second claws is 140 °, and the first claw is located vertically above the rod member;
each of the at least two claws is detachably connected with the claw frame.
5. The vehicle longitudinal passing angle measuring device of claim 2, wherein the rotational connection mechanism includes a rotational shaft member, a pin shaft member, and a sleeve member; wherein
One end of the rotating shaft component is rotationally connected with the jaw frame, so that the rotating shaft component can rotate around the axial direction of the rotating shaft component relative to the jaw frame, and the other end of the rotating shaft component is rotationally connected with the sleeve component through a pin shaft component, so that the sleeve component rotates around the axial direction of the pin shaft component relative to the rotating shaft component, and the axial direction of the pin shaft component is perpendicular to the axial direction of the rotating shaft component;
the sleeve member is detachably connected with the rod unit, and a stopper member is provided on the sleeve member, the stopper member restricting movement of the rod unit within the sleeve member.
6. The vehicle longitudinal passing angle measuring device of claim 3, wherein the scanning means includes a vertical moving mechanism and a laser scanning member; and the number of the first and second electrodes,
the vertical movement mechanism is movably provided on the horizontal movement mechanism in a direction perpendicular to an extending direction of the rod member, and one end of the vertical movement mechanism is provided with the laser scanning member.
7. The vehicle longitudinal passing angle measuring device according to claim 6,
the control part obtains the second position parameter according to the horizontal distance between the position of the laser scanning component and the center of the claw frame in the coordinate system;
the control means obtaining the third position parameter from a vertical height of the position of the laser scanning member in the coordinate system from the rod part;
and the control component obtains the longitudinal angle by using the diameters and relative positions of the two tires, the second position parameter and the third position parameter in the coordinate system, wherein the longitudinal angle is an included angle between the position of the laser scanning component and a tangent line of the bottom of each of the front tire and the rear tire.
8. The vehicle longitudinal passing angle measuring device according to claim 6,
the horizontal moving mechanism comprises a moving frame, a guide groove, a friction wheel assembly and a transmission assembly; wherein
The moving frame has a through hole and a cavity therein, the axial direction of the through hole is the same as the extending direction of the rod member, and the friction wheel assembly is disposed in the cavity and contacts the rod member passing through the through hole to link the moving frame to move relative to the rod member in the extending direction of the rod member by the rotation of the friction wheel assembly;
the guide groove is arranged on the outer wall of one side of the movable frame and extends in the direction perpendicular to the axial direction of the through hole;
the transmission assembly is arranged on the guide groove and is in transmission connection with the vertical moving mechanism; and is
The vertical moving mechanism comprises a scanning frame and a transmission rack arranged on the scanning frame; wherein
One end of the scanning frame is fixedly connected with the laser scanning component;
the transmission rack is in transmission connection with the transmission assembly and enables the scanning frame and the laser scanning component to move along the extending direction of the guide groove; and
the control component is respectively connected with the friction wheel assembly, the transmission assembly and the laser scanning component.
9. The device for measuring the longitudinal passing angle of an automobile according to claim 8, wherein the rod member comprises a plurality of connecting rods connected in series, and both ends of the connecting rods are detachably connected to the adjacent connecting rods, respectively.
10. The longitudinal passing angle measuring device of claim 9, wherein the peripheral wall of each of the connecting rods is symmetrically provided with two guide grooves along its extending direction, and when two adjacent connecting rods are connected, the guide grooves of two adjacent connecting rods are aligned; and is
The inner peripheral wall of the through hole in the movable frame is provided with a positioning boss, and when the connecting rod is inserted into the through hole, the positioning boss is accommodated in the guide groove.
11. A method for measuring a vehicle longitudinal passing angle measuring apparatus, wherein the vehicle longitudinal passing angle measuring apparatus employs the vehicle longitudinal passing angle measuring apparatus according to any one of claims 1 to 10, the method comprising the steps of:
the two claw components are respectively clamped on the outer peripheries of two tires positioned on the same side of an automobile, and the diameters and the relative positions of the two tires are obtained according to first position parameters of the two claw components measured by the first sensor components on the two claw components;
controlling the motion track of the scanning component, enabling the scanning component to scan obstacles of parts of the automobile chassis from one side to measure a plurality of obstacle critical points, and at each obstacle critical point, acquiring a second position parameter of the scanning component by the second sensor component, and acquiring a third position parameter of the obstacle critical points by the third sensor component;
acquiring a longitudinal angle of each obstacle critical point according to the diameters and relative positions of the two tires, the second position parameter and the third position parameter, wherein the longitudinal angle is an included angle between the obstacle critical point and tangent lines of a front wheel and a rear wheel respectively;
and identifying a minimum angle according to the longitudinal angle of each obstacle critical point, wherein the minimum angle is a longitudinal passing angle of the automobile.
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114044266B (en) * 2021-11-02 2023-03-24 江苏江美赋食品科技发展有限公司 Reusable transport package and use method
CN114777618B (en) * 2022-04-27 2023-07-07 东风柳州汽车有限公司 Multi-degree-of-freedom wheelbase measuring instrument and measuring method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534998A (en) * 2015-01-20 2015-04-22 吉林大学 Measuring device for automobile basic parameters and measuring method of measuring device
CN105334067A (en) * 2015-12-04 2016-02-17 北京汽车研究总院有限公司 Device for measuring ramp breakover angle of automobile and measuring method thereof
CN207336088U (en) * 2017-11-10 2018-05-08 北京汽车股份有限公司 Automobile passability measuring device
CN108592797A (en) * 2018-03-28 2018-09-28 华南理工大学 A kind of dynamic measurement method and system of vehicle overall dimension and wheelbase
CN112050773A (en) * 2020-08-19 2020-12-08 中国第一汽车股份有限公司 Device and method for measuring longitudinal passing angle of automobile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104534998A (en) * 2015-01-20 2015-04-22 吉林大学 Measuring device for automobile basic parameters and measuring method of measuring device
CN105334067A (en) * 2015-12-04 2016-02-17 北京汽车研究总院有限公司 Device for measuring ramp breakover angle of automobile and measuring method thereof
CN207336088U (en) * 2017-11-10 2018-05-08 北京汽车股份有限公司 Automobile passability measuring device
CN108592797A (en) * 2018-03-28 2018-09-28 华南理工大学 A kind of dynamic measurement method and system of vehicle overall dimension and wheelbase
CN112050773A (en) * 2020-08-19 2020-12-08 中国第一汽车股份有限公司 Device and method for measuring longitudinal passing angle of automobile

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
利用视觉伺服技术进行车辆尺寸测量的方法;卞晓东 等;《汽车工程》;20040331;第26卷(第3期);全文 *
智能车辆非结构化路面障碍检测;张博 等;《汽车工程》;20090630;第31卷(第6期);全文 *

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