WO2018072096A1

WO2018072096A1 - Measurement system for calibrating automobile spring parameter

Info

Publication number: WO2018072096A1
Application number: PCT/CN2016/102439
Authority: WO
Inventors: 徐孟飙
Original assignee: 金宙科技有限公司
Priority date: 2016-10-18
Filing date: 2016-10-18
Publication date: 2018-04-26

Abstract

Provided is a measurement system for calibrating an automobile spring parameter, comprising: a mounting pit (11) recessed in the ground (10), two carrier plates (12) diposed across the mounting pit (12) from left to right; two force applying devices (20) provided at the left and right sides inside the mounting pit (11) respectively and provided with a jack (27), an oil passage to which the jack (27) is externally connected being connected to an oil pressure sensor (28); a chassis fixing device (30) provided around the mounting pit (11); and a deformation sensor (50) mounted at a spring (55) of a wheel (54). When the measurement system is used, an automobile (51) is parked on the ground (10), the wheel (54) is rolled on the two carrier plates (12), a chassis height of the automobile (51) is fixed by the chassis fixing device (30), the carrier plates (12) and the wheel (54) are lifted by the jack (27), the oil pressure sensor (28) measures a jacking force of the jack (27), the deformation sensor (50) measures a corresponding spring deformation amount, such that a relationship between the stress and deformation of the spring (55) of each wheel (54) can be calibrated. When the automobile (51) is loaded, the spring deformation amount of each wheel (54) is measured and converted to a stress, and then stresses are added up to obtain an overall load of the automobile (51).

Description

Measuring system for calibrating automotive spring parameters

Technical field

The present invention relates to a system for measuring, and more particularly to a measuring system for calibrating automotive spring parameters.

Background technique

Existing car frames are supported on the wheels by springs, but the stiffness of each spring is different. Although there is currently a means for measuring the amount of deformation of each spring on the frame of the automobile, for example, the displacement sensor or the displacement sensing module described in the patent of the TW Patent Application No. 104200912 is a means for measuring the amount of deformation of the spring. However, at present, there is no need to measure the stiffness of each spring, and of course there is no method and measuring device for measuring the stiffness of each spring that has been mounted on the frame. Therefore, the existing means cannot accurately measure the load of the vehicle by the displacement of the spring and the stiffness of the spring.

In fact, if the load on the car frame is different, the effects on the springs under the frame are different. Only the relationship between the force and deformation of each spring is known, and the corresponding load can be calculated according to the total displacement of each spring. It should be pointed out that the spring constant of the spring corresponding to each wheel is sometimes not constant during the load of the car. It may be different at different stages of deformation. For example, sometimes the spring of one wheel is heavy by two springs. When stacked at light load, one spring is stressed. When the load is heavy, the two springs are simultaneously stressed. This is a major challenge for measuring the force and deformation relationship of each spring of the whole vehicle. At present, it is not able to measure the car every time. A standard device for spring stiffness, so it is impossible to calibrate the relationship between the force and deformation of the spring of each car.

Summary of the invention

There is currently no standard device capable of measuring the stiffness of each spring of a car. To this end, the present invention is intended to calibrate the relationship between the force and deformation (line displacement or angular displacement or strain) of each spring on the frame of the automobile, so that as long as the deformation of each spring is measured, it can be converted into a force. After the total calculation, you can know the load of the car.

In order to achieve the above object, the present invention provides a measuring system for calibrating a car spring parameter, which is used for measuring a spring between a frame and a wheel of a vehicle to be tested, and the main content includes two grounding devices. Force device, a frame fixture and more than one deformation sensor, wherein:

a mounting pit is arranged in the ground, the mounting pit is an elongated pit extending in the left-right direction, and two top plates are arranged across the left and right positions of the mounting pit top;

The two force applying devices are respectively disposed on the left and right sides of the installation pit, and each of the force applying devices is provided with a pit base at the bottom of the installation pit, and a jack rail is arranged in the middle of the pit base, and a sliding rail is arranged on each jack rail. a jack slider, transversely driving a driving screw hole in the middle of each jack slider, corresponding to the left and right sides of each jack rail, combining two bottom screw seats on each base, and inserting a bottom screw bearing in each bottom screw seat, A bottom screw is disposed between the two bottom screw bearings, and each bottom screw is screwed through each driving screw hole, and a transmission is coupled to each of the pit bases, and each transmission is coupled with each bottom screw, and each of the transmissions is coupled and coupled with a motor at each jack. Fixing a jack on the slider, the jack is connected with a pressurized oil pipe, and an oil pressure sensor is connected to each of the pressurized oil pipes;

The frame fixing device is disposed on the ground and located around the installation pit for fixing a height position of the frame of the automobile to be tested;

Each deformation sensor is respectively installed at a spring of the automobile to be tested, for example, between the frame and the spring base, for measuring the linear displacement of the spring, or the end of the front and rear positions of the leaf spring for measuring the spring. The angular displacement, or the strain gauge is attached to the surface of the leaf spring, the strain of the spring is measured, and the deformation of each spring is sensed by the above means.

Further, the frame fixing device of the present invention is combined with a gantry frame on the ground, the gantry frame is above the installation pit, and a top beam is arranged on the top of the gantry frame at the bottom of the top beam. The left-right moving form is combined with a movable head holder, and two linear stretching devices are coupled to the left and right sides of the movable head holder, and a pressing head is coupled to the bottom end of each linear stretching device.

Further, the present invention forms a plane on the surface of the ground, the frame fixing device includes four tension fixing brackets, each tension fixing bracket is provided with a base, and a suction structure is provided at the bottom of each base to each attraction structure The base can be attracted and fixed on the plane, a screw elevator is combined at the top of each base, a vertical lifting screw is screwed into each screw elevator, and a speed reducer is fixed in each base, and each speed reducer is connected with each screw elevator In each of the speed reducers, a motor is combined, and each of the speed reducers drives each of the lifting screws to be lifted and lowered. A lifting platform is coupled to the top end of each lifting screw, and a clamping head is arranged on each lifting platform. A stopper is arranged on the top surface of the clamping head, and a slider is slidably disposed on the top surface of each clamping head so as to advance and retreat toward the stopper, in the bottom of each slider facing the side of each stopper The recess forms a lower edge groove of the frame channel steel.

Preferably, the plane of the present invention is a magnetic plane, and the attraction structure is an electromagnet configuration.

Preferably, the suction structure of the present invention is an airbag structure, and a negative pressure groove is formed at the bottom of each airbag structure, and each negative pressure groove is a groove with an opening facing downward, and an air suction pipe is disposed around each airbag structure. The inner ends of the respective exhaust pipes are in communication with the respective negative pressure grooves.

Further, the present invention is provided with a concave track pit on the front and rear sides of the installation pit, and the frame fixing device is combined with four double coordinates in a matrix arrangement at the bottom of the track pit. The platform, each of the two-coordinate mobile platform is fixed with a longitudinal dovetail guide rail at the bottom of the track pit, and a longitudinal moving platform is combined on each longitudinal dovetail guide rail in a front-back sliding manner, and a lateral dovetail guide rail is arranged on each longitudinal moving platform. Combining a lateral moving platform on each lateral dovetail rail; the frame fixing device comprises four tension fixing brackets, each tension fixing bracket fixing a base on each lateral moving platform, and a screw jack is combined on the top of each base, The screw jack is screwed into a vertical lifting screw, and a speed reducer is fixed in each base, and each speed reducer is connected with each screw lifter, and a motor is coupled to each speed reducer, and each speed reducer drives each lifting screw to lift and lower. a lifting platform is coupled to the top end of each lifting screw, and a clamping head is arranged on each lifting platform, and the top surface of each clamping head is upwardly extended a stop block, and a slider is slidably disposed on the top surface of each clamping head so as to advance and retreat toward the stopper block, and a frame groove is concavely formed in a bottom portion of each slider toward the side of each stopper block. The lower edge of the steel is grooved.

Further, the present invention is provided with a turntable at the top end of each of the lifting screws, a turntable groove is formed in each of the lifting platforms, and a shaft hole is bored downward in the center of each turntable groove, and the top end of each lifting screw is upward. Each of the turntables is disposed in each of the turntable slots in a rotatable manner through each of the shaft holes.

Further, the present invention pivotally connects two clamping hooks respectively extending upward and inward on opposite sides of the lifting platform, and a hook is protruded downward at the end of each clamping hook, the clips a neck is formed in the middle of the tight head, and each neck is located between the ends of the two clamping hooks, and two convex plates are extended toward the opposite sides at the bottom of each clamping head, and a concave surface is respectively disposed on the top surfaces of the two convex plates a hook groove, two hook claws of the two clamping hooks are embedded in the two hook grooves, and a gap between the bottom surface of each clamping head and each lifting platform is greater than the depth of each hook groove, and is transparent when each clamping head is pulled up After two clamping hooks, it is combined with each lifting platform.

Further, the present invention is provided with a concave track pit on the front and rear sides of the installation pit, and the frame fixing device combines four double coordinates in a matrix arrangement at the bottom of the track pit. The mobile platform, each double-coordinate mobile platform is fixed with a longitudinal dovetail guide rail at the bottom of the track pit, and a longitudinal moving platform is combined on each longitudinal dovetail guide rail in a front-back sliding manner, and is moved horizontally in each longitudinal direction. A lateral dovetail guide rail is arranged on the platform, and a lateral moving platform is coupled to each lateral dovetail rail. A pivoting seat is coupled to each lateral moving platform, and a screw is pivotally connected to each pivoting joint, and each lower screw is screwed with an internal thread. The rod is screwed to the top of each of the internally threaded rods, and a steel hook is coupled to the top end of each of the upper screws.

Preferably, the present invention incorporates a positioning device on the ground in the middle of the rear of the mounting pit. The positioning device is a winch and extends a steel cable outwardly, and a hook is attached to the outer end of the cable.

When using the present invention, since different cars have different left and right wheel spacings, in order to match the position of the left and right wheels of the automobile, it is necessary to adjust the positions of the two top plates across the left and right sides of the top of the mounting pit to make the car open. When the crater is installed, the two top plates can be simultaneously pressed by the left and right wheels of the automobile, so that the jacks of the two urging devices can actually lift the top plates and the wheels when they are topped, and then drive by the motor of each urging device. Each of the transmissions drives the bottom screw to rotate, and the jacks and the jacks are slid to the left and right, and the jacks are moved directly below the top plates.

When measuring by the invention, the vehicle is first driven to the top of the installation pit, and the two wheels of the same front and rear position are successively crushed on the two top plates, and the frame fixing device is fixed when the springs of the same front and rear positions are equivalently measured. The position of the frame of the car and the height of the frame of the frame are avoided, and the frame of the car is moved up during the process of avoiding the two wheels on the top of the two jacks.

In the process of successively using the two jacks on the top spring, each oil pressure sensor can obtain the top force of each jack, and the deformation amount of each spring is obtained by manual measurement or by a deformation sensor provided at the spring of the automobile, In the process of jacking up on one jack, the relationship between the force and deformation of the two springs is calculated and the force and deformation curves are drawn. After measuring the spring of a group of wheels, and then starting the car or pulling the position of the car with the winch to measure the next set of springs, repeating the above-mentioned measurement operations several times, the force and deformation of each spring of the car can be measured. The curve calibration is completed, and the measurement operation of the calibration of the automobile spring parameters of the present invention is completed.

The utility model has the advantages that when all the springs of the automobile are calibrated, when it is necessary to know the load of the frame of the automobile, the deformation amount of each spring can be matched by the manual measurement method or the deformation sensor after the vehicle load. The force and deformation curves of the springs calculate the force of each spring, and the total load of the car can be obtained by summing the forces of all the springs of the car.

DRAWINGS

1 is a side view of a first preferred embodiment of a measuring system for calibrating automotive spring parameters in the present invention schematic diagram;

2 is a front view of a first preferred embodiment of a measuring system for calibrating automotive spring parameters in the present invention;

3 is a plan view showing a first preferred embodiment of the urging device for measuring a car spring parameter in the present invention;

4 is a side cross-sectional view showing the first preferred embodiment of the measuring system for calibrating the parameters of the automobile spring in the present invention;

Figure 5 is a schematic view showing the implementation of a first preferred embodiment of a measuring system for calibrating automotive spring parameters in the present invention;

Figure 6 is a side elevational view showing a second preferred embodiment of the measuring system for calibrating the parameters of the automobile spring in the present invention;

Figure 7 is a front elevational view showing a second preferred embodiment of the measuring system for calibrating the parameters of the automobile spring in the present invention;

Figure 8 is a partial cross-sectional view showing a second preferred embodiment of the tension fixing bracket of the measuring system for calibrating the parameters of the automobile spring;

9 is a partial cross-sectional view showing a tension fixing bracket of a third preferred embodiment of the measuring system for calibrating automobile spring parameters in the present invention;

Figure 10 is a front elevational view showing a fourth preferred embodiment of the measuring system for calibrating the parameters of the automobile spring in the present invention;

Figure 11 is a partial cross-sectional view showing the frame fixing device of the fifth preferred embodiment of the measuring system for calibrating the parameters of the automobile spring in the present invention;

Figure 12 is a front elevational view of a fifth preferred embodiment of a measuring system for calibrating automotive spring parameters in accordance with the present invention.

Description of the reference signs:

10 ground 11 installation pit

111 side pit 12 top board

13 magnetic plane 14 track pit

15 double-coordinate mobile platform 151 longitudinal dovetail guide

152 longitudinal moving platform 1521 lateral dovetail rail

153 lateral moving platform 20 afterburner

21 pit base 211 jack track

22 jack slider 221 drive screw hole

23 bottom screw seat 231 bottom screw bearing

24 bottom screw 25 transmission

26 motor 27 jack

271 pressurized oil pipe 28 oil pressure sensor

30 frame fixing device 31 gantry crane frame

311 top beam 32 movable head bracket

33 linear expansion device 34 indenter

341 ball head 35 tension fixed bracket

36 base 361 electromagnet construction

362 screw lift 363 lifting screw

364 turntable 365 reducer

366 motor 367 lifting platform

3671 turntable slot 3672 shaft hole

3673 pin 3674 card grip hook

3675 hooks 368 clamping head

3681 neck 3682 convex plate

3683 hook groove 3684 stop block

3685 slider 3686 frame channel steel lower edge slot

369 airbag construction 3691 negative pressure tank

3692 exhaust pipe 37 pivot seat

371 screw 372 internal threaded rod

373 inner screw hole 374 upper screw

38 steel hook 40 positioning device

41 steel cable 42 hook

50 deformation sensor 51 car

52 frame 521 frame channel steel

53 frame plate 54 wheels

55 spring 60 laser range sensor group

61 mirror 62 reflective laser range sensor

63 mirror 64 lightning side distance measuring sensor

detailed description

In order to understand the technical features and practical effects of the present invention in detail, it can be implemented in accordance with the contents of the specification, and further described in detail with reference to the preferred embodiments shown in the drawings.

As shown in FIG. 1 to FIG. 4, a first preferred embodiment of the present invention is a measuring system for calibrating automotive spring parameters, comprising a ground 10, two urging devices 20 respectively mounted on the ground 10, and a frame. The fixing device 30, a positioning device 40, a plurality of deformation sensors 50 mounted on the automobile 51 to be tested, and a laser ranging sensor group 60, wherein:

A mounting pit 11 is recessed in the ground 10, and the mounting pit 11 is an elongated strip extending laterally. As in the preferred embodiment, the mounting pit 11 is divided into two symmetrical manners on the left and right sides. The side pit 111 is provided with a top plate 12 at the top end of each of the side pits 111.

The two force applying devices 20 are respectively accommodated in the side pits 111. Each of the force applying devices 20 is provided with a pit base 21 at the bottom of each side pit 111, and a jack rail 211 is disposed in the middle of the pit base 21, and each jack rail 211 is horizontal. The extended rails are combined with a jack slider 22 in a manner of sliding left and right on each of the jack rails 211, and a driving screw hole 221 is transversely penetrated in the middle of each jack slider 22, corresponding to the left and right sides of each jack rail 211. Two bottom screw seats 23, two bottom screw seats 23 are coupled to the bases 21, and a bottom screw bearing 231 is embedded in the middle of each of the bottom screw seats 23, and is rotatably inserted between the two bottom screw bearings 231. The bottom screw 24 and the bottom screws 24 are threaded through the drive screw holes 221 of the jack sliders 22.

A transmission 25 is disposed beside one of the bottom screw seats 23 of each of the force applying devices 20, and each of the transmissions 25 is coupled to each of the pit bases 21, and each of the transmissions 25 is coupled to each of the bottom screws 24, and a motor 26 is coupled to each of the transmissions 25. Each of the motors 26 may be a stepping motor or a servo motor. Each of the motors 26 drives each of the transmissions to rotate the bottom screws 24, and a jack 27 is fixed on each of the jack sliders 22. The jacks 27 are connected to a pressurized oil pipe 271 for each The oil pressure pipe 271 is connected to an external hydraulic drive source, and a hydraulic pressure sensor 28 is connected to each of the pressurized oil pipes 271.

The frame fixing device 30 is provided with a gantry frame 31 which is coupled to the floor 10 and spans the left and right sides of the installation pit 11. A top beam 311 is disposed in the middle of the top of the gantry frame 31. The top beam 311 is a transversely extending beam and is located above the installation pit 11 at the bottom of the top beam 311 in a form that can be moved by the screw system or the hydraulic system to move left and right. The dynamic head holder 32 is coupled with two vertically disposed linear stretching devices 33 on the left and right sides of the bottom of the movable head holder 32. Each of the linear stretching devices 33 may be a hydraulic cylinder or an electric linear telescopic rod. In the embodiment, the two linear expansion devices 33 are hydraulic cylinders. At the bottom end of each linear expansion device 33, a pressing head 34 is coupled. Each of the pressing heads 34 extends upwardly in the middle of the top portion with a ball head 341, and each ball head 341 can be The rotational form is embedded in the bottom of each linear telescopic device 33 so that each of the indenters 34 can be slightly swung to adjust the direction.

The positioning device 40 is a hoisting machine and is coupled to the ground 10 in the middle of the rear side of the mounting pit 11. The positioning device 40 extends outwardly from a cable 41, and a hook 42 is coupled to the outer end of the cable 41.

A plurality of deformation sensors 50 are respectively mounted on the automobile 51 to be tested. The automobile 51 is provided with a frame 52 on which a frame plate 53 is coupled, and a plurality of pairs are provided at the front and rear positions of the frame 52. The left and right wheels 54 of the same front and rear position are respectively provided with a spring 55 between each wheel 54 and the frame 52. Each spring 55 is a leaf spring, and each of the wheels 54 is supported by each spring 55. In the preferred embodiment, a plurality of deformation sensors are provided. Each of the deformation sensors 50 is a vertically disposed displacement sensor, and each of the deformation sensors 50 is coupled to a bottom end of each spring 55 or a spring seat coupled to a bottom end of each spring 55. The top end of each deformation sensor 50 is coupled to the corresponding frame 52. At the same time, the amount of deformation when each spring 55 is compressed and deformed by force is measured, and the deformation data of each spring 55 is transmitted outwards in a wired or wireless manner.

The laser ranging sensor group 60 is provided with a mirror 61 on the outer side of the axial center of the left and right wheels 54 of the automobile 51 to be tested. Corresponding to the positions of the two mirrors 61, two inner surfaces on the left and right sides of the gantry frame 31 are correspondingly provided. The reflective laser ranging sensor 62 has a mirror 63 attached to the rear of the automobile 51, and a lightning side ranging sensor 64 is mounted on the positioning device 40. The data of the position of the left and right wheels 54 of the automobile 51 can be measured by the cooperation of the two reflective laser ranging sensors 62 and the two mirrors 61. By the cooperation of the lightning side ranging sensor 64 and the mirror 63, The data of the front and rear positions of the car 51 can be measured, and the above two kinds of data can be used as a reference for the parking position of the car 51.

Before the measurement system for calibrating the parameters of the automobile spring in the present invention, as shown in the first preferred embodiment shown in FIG. 2, since the pitches of the left and right wheels 54 of the various automobiles 51 are different, it is necessary to follow the track of the different cars 51. The position of each of the top plates 12 is set across the top end of each of the side pits 111 so that the pitch of the two top plates 12 is adjusted to be the same distance that can be simultaneously rolled by the left and right wheels 54 of the automobile 51. Then, the positions of the jacks 27 are adjusted, and the motor 26 of each of the urging devices 20 drives the respective transmissions 25 to rotate the bottom screw 24, so that the jacks 22 of the bottom screws 24 are slid to the left and right, and the jacks 27 are moved to the respective positions. Directly below the top plate 12, each jack 27 is capable of topping each of the top plates 12 together with each of the wheels 54.

Then, in conjunction with the center position of the frame plate 53 of the automobile 51, the movable head holder 32 is moved left and right. The position of the two linear reclining devices 33 can be located at a left-right symmetrical position above the center of the frame plate 53 so that when the two linear stretching devices 33 are extended downward, the two rams 34 can be symmetrically pressed on the frame plate 53. The height position of the frame plate 53 is fixed by fixing. When the present invention is used, the automobile 51 is driven to the lower side of the gantry frame 31, and the left and right wheels 54 of the same front and rear position are successively crushed on the two top plates 12, as shown in Fig. 1 and Fig. 2, before and after the vehicle 51 is started. The position is not easy to finely adjust so that the center of each wheel 54 is located directly above each jack 27, at this time, the hook 42 of the positioning device 40 can be coupled to the frame 52 of the automobile 51, and the positioning device 40 pulls the cable 41 to drag the automobile 51. In the manner of finely adjusting the front and rear positions of the automobile 51, the centers of the two wheels 54 of the same front and rear positions are successively positioned directly above the two jacks 27.

When the springs 55 of the two wheels 54 in the same position are measured in the same position, as shown in FIG. 1 and FIG. 5, the two linear expansion devices 33 of the frame fixing device 30 are simultaneously extended downward, and the two indenters 34 are pressed in the vehicle. On the frame plate 53, the height position of the frame plate 53 of the automobile 51 is fixed. Then, the jacks 27 of the two force applying devices 20 put the two top plates 12 and the two wheels 54 on a certain stroke, for example, the wheel 54 is topped to a height of two-thirds of the upper limit position, since the frame plate 53 has been pressed by the two heads. 34 is pressed and fixed, so that the position of the frame plate 53 does not move up during the process of the two jacks 27 on the left and right wheels 54.

In the process of placing the two springs 55 on the two jacks 27, the top force of each jack 27 can be obtained by each oil pressure sensor 28, and the deformation amount of each spring 55 can be obtained by each deformation sensor 50, so that it can be used once. During the process of jacking the top of the jack 27, the relationship between the force and the deformation of the spring 55 supporting the two wheels 54 is calculated, and the force and deformation curves of the springs 55 are plotted with the parameters of the springs 55.

After the parameters of the spring 55 of the set of wheels 54 are measured in an equivalent manner, the next set of springs 55 is then measured, at which time the two jacks 27 are lowered in height, and the two linear telescopic devices 33 retract the two indenters 34 to release the car of the car 51. The plate 53 is then driven to drive the car 51, or the car 51 is dragged by the positioning device 40, so that the two wheels 54 to be tested are crushed on the two top plates 12, and then the above-mentioned measurement operation is repeated. The parameters of the springs 55 of the automobile 51 are calibrated, and the force and deformation curves of the springs 55 are drawn, and the measuring operation of the calibration spring parameters of the invention is ended.

When the force and deformation relationship of all the springs 55 of the automobile 51 are calibrated, when the frame plate 53 of the automobile 51 is loaded, as long as the deformation amount of each spring 55 is obtained, for example, the automobile 51 provided with the plurality of deformation sensors 50, The linear deformation amount of each spring 55 can be obtained by each deformation sensor 50, and the bearing force of each spring 55 can be calculated by the linear deformation amount of each spring 55 and the force and deformation curve of each spring 55, and all the springs 55 are The weight of the frame plate 53 can be obtained by load bearing, that is, the whole of the car 51 Body load.

In addition to the foregoing first preferred embodiment, in the first preferred embodiment of the present invention, a deformation sensor 50 in the form of a displacement sensor is mounted on the spring 55 of the automobile 51, and each deformation sensor 50 can be used to measure each jack. In addition to the linear displacement of each spring 55, the deformation sensor 50 may be an angular displacement sensor, and the angular displacement sensor may be attached to the front and rear ends of the plate-shaped spring 55. In the process of measuring the top wheels 54 of each jack 27, the deformation amount of each plate-shaped spring 55 is rotated by the force, and the top force of each jack 27 obtained by each oil pressure sensor 28 can be used to calibrate the springs. The relationship between force and deformation (angle change) of 55. When the load of the automobile 51 is measured, the amount of deformation of the rotation angle of each spring 55 can be measured, and the relationship between the applied force and deformation (angle change) can be used to calculate the force of each spring 55 and then add up to the automobile 51. The overall load. Of course, each deformation sensor 50 can be used as a strain sensor, and attached to the surface of the spring 55, and the relationship between the force and the strain of the spring 55 can be measured, so that the force of each spring can be known according to the strain of the spring 55, and the total sum can be obtained. Car load.

In the present invention, the measuring system for calibrating the parameters of the automobile spring is used to measure the deformation of the spring 55. In addition to measuring the deformation sensor 50 for measuring linear deformation and angular deformation, it is also possible to manually observe the recording mode of each spring 55, or Each of the springs 55 is provided with other optical sensor measurement methods to obtain the deformation amount of each spring 55 in the process of the top wheels 54 of each jack 27. Since the means for obtaining the deformation amount of each spring 55 is numerous, the present invention is not limited thereto. .

When the linear telescopic device 33 of the frame fixing device 30 of the measuring system for calibrating the automobile spring parameters in the present invention is set as the hydraulic cylinder, the frame fixing device 30 can be used to verify the measurement of the spring 55 of each automobile 51 measured by the present invention. Precision. In the verification operation, the car 51 is driven to the lower side of the gantry frame 31, so that the frame plate 53 is located below the two linear expansion devices 33, and then the frame fixing device 30 drives the two linear expansion devices 33 to extend downward, so that two The ram 34 contacts the frame plate 53 and presses the frame plate 53 with a predetermined force. At this time, the amount of deformation of each spring 55 is measured by manual measurement or by various deformation sensors 50 mounted on the automobile 51, and then Calculating the bearing capacity of each spring 55 in accordance with the spring force and deformation relationship of the springs that have been calibrated by the springs 55, and finally adding the load of the automobile 51, and calculating the calculated load of the automobile 51 and the predetermined force of the frame fixing device 30. By comparison, the measurement accuracy of the present invention can be calculated.

The first preferred embodiment of the above-described measuring system for calibrating the parameters of the automobile spring is an automobile 51 suitable for a flatbed truck. By means of the two linear stretching devices 33 on the gantry frame 31, the two rams 34 can be lowered and pressed. The frame plate 53 of the automobile 51 fixes the height of the frame plate 53 and the frame 52 Degree position. Compared with the flatbed truck, since the box truck is provided with the vehicle frame on the frame 52, damage may occur when the vehicle box is pressed. Therefore, other frame fixing devices 30 are used to fix the height position of the frame 52, for example, FIG. 6 to FIG. The tension fixing bracket 35 employed in the second preferred embodiment shown in Fig. 8 can be applied to a vehicle of a flatbed or a van.

Referring to the second preferred embodiment of the measuring system for calibrating automobile spring parameters in the present invention shown in FIGS. 5 to 8, wherein the surface of the floor 10 is formed by fixing a steel plate or other metal plate having magnetic attraction. A magnetic bearing plane 13, the frame fixing device 30 of the second preferred embodiment is provided with four tension fixing brackets 35. Each tension fixing bracket 35 is provided with a base 36, and each base 36 is a housing at the bottom of each base 36. An electromagnet structure 361 is provided, and a screw jack 362 is coupled to the center of the top of each base 36. A vertically disposed lifting screw 363 is screwed into each screw jack 362, and a circle is joined in a concentric manner at the top end of each lifting screw 363. A speed reducer 365 is fixed in each of the bases 36. Each of the speed reducers 365 is coupled to the screw lifter 362. A motor 366 is coupled to each of the speed reducers 365, and each of the speed reducers 365 drives the screws. The lifting screw 363 in the elevator 362 is raised and lowered.

Each of the lifting screws 363 is provided with a lifting platform 367, and a rotating slot 3671 is formed in the bottom of each lifting platform 367. A shaft hole 3672 is disposed on the bottom surface of each lifting platform 367 corresponding to the center of each rotating platform 367. The shaft hole 3672 communicates with each of the turntable slots 3671. The top end of each lift screw 363 passes upwardly through each of the shaft holes 3672, and the turntable 364 is disposed in each of the turntable grooves 3671 in a rotatable manner, on opposite sides of each of the lift platforms 367. A pin 3673 is passed through to pivot two clamping hooks 3674 respectively extending upwardly and inwardly. Each of the clamping hooks 3674 is an L-shaped arm body and the ends are located above the lifting platforms 367, respectively. A hook 3675 is protruded downward from the end of the grapple 3674.

Each clamping platform 367 is provided with a clamping head 368. A neck 3681 having a width wider than the top and the bottom is formed in the middle of each clamping head 368. Each neck 3681 is located between the ends of the two clamping hooks 3674. The bottom of each clamping head 368 extends toward the opposite sides of the two convex plates 3682, and a hook groove 3683 is respectively recessed on the top surfaces of the two convex plates 3682, and two clamping hooks 3674 of each tension fixing bracket 35 are provided with two claws 3675 Two hook grooves 3683 are embedded, and the gap between the bottom surface of each clamping head 368 and each lifting platform 367 is greater than the depth of each hook groove 3683. When each clamping head 368 is pulled up, it is passed through two clamping hooks 3674. It is fixed in combination with each lifting platform 367. A stopper 3684 is extended upwardly on the top surface of each clamping head 368, and a slider 3685 is slidably disposed on the top surface of each clamping head 368 so as to be advanced and retractable toward the stopper 3684. Block 3685 is recessed toward the bottom of one side of each stop block 3684 to form a frame channel lower edge slot 3686.

When the four tension fixing brackets 35 of the frame fixing device 30 are used, they are arranged in a matrix. The vehicle frame 52 is disposed under the frame 52 of the automobile 51, and is respectively disposed in pairs on the inner side and the inner side of the left and right wheels 54 to be tested, and each frame 52 is provided with two longitudinal frame grooves 521 on the left and right sides, respectively. The tension fixing bracket 35 is located between the magnetic attraction plane 13 and each of the frame channel steels 521, and each tension fixing bracket 35 is attracted and fixed on the magnetic attraction plane 13 by the electromagnet structure 361, and the lifting platform 367 and the clamping head 368 are lifted and lowered. To the appropriate height, the stop block 3684 of each clamping head 368 is then abutted against the outer side of each frame channel 521, and the slider 3685 is clamped to the mating stop block 3684 to make each frame slot. The lower edge of the steel 521 is embedded in the frame channel lower edge slot 3686, and the height position of the frame 52 of the automobile 51 can be fixed by the four tension fixing brackets 35.

When the frame fixing device 30 is used, the tension fixing brackets 35 are detached from the frames 52, so that when the clamping heads 368 are no longer pulled up and dropped, the hooks 3675 of the two clamping hooks 3674 are respectively separated. Each of the hook grooves 3683, at this time, the two clamping hooks 3674 can be turned outwards, so that the clamping heads 368 can be separated from the lifting platforms 367 into a two-part configuration, so that the next time the frame fixing device is set When the 30 is installed, the two portions of each of the tension fixing brackets 35 can be easily moved into the space below the narrow space 51, and then assembled and used. The rest of the configuration of the second preferred embodiment is the same as that described in the first preferred embodiment.

In the present invention, each of the tension fixing brackets 35 for calibrating the parameters of the automobile springs is provided with an electromagnet structure 361 provided at the bottom of each base 36 as a suction structure, and is magnetically attracted and fixed on the magnetic plane 13 as shown in FIG. In the third preferred embodiment of the present invention, the tension fixing bracket 35 is formed with a balloon structure 369 as a suction structure at the bottom of the base 36, and a negative pressure groove 3691 is formed at the bottom of each airbag structure 369, and each negative pressure groove 3691 is a recessed downwardly facing groove, and an exhaust pipe 3692 is disposed around each of the airbag structures 369. The inner end of each of the exhaust pipes 3692 communicates with each of the negative pressure grooves 3691, and the outer ends of the respective exhaust pipes 3692 are connected to the negative pressure source. For example, pumping a pump. When the tension fixing bracket 35 of the third preferred embodiment is fixed on the ground 10, the bottom airbag structure 369 is covered and attracted to be fixed on the magnetic plane 13, and the magnetic plane 13 can be generally not magnetically attractive. The plane can be made airtight as long as the airbag structure 369 is placed over it.

In addition to the foregoing second preferred embodiment or the third preferred embodiment, the second embodiment of the tension fixing bracket 35 is coupled to the plane of the magnetic plane 13 of the ground 10 by magnetic attraction or vacuum suction. In addition, in the fourth preferred embodiment of the present invention, as shown in FIG. 10, a concave track pit 14 is provided on the front and rear sides of the mounting pit 11 provided on the ground 10, and the track pit 14 is located in the vehicle to be tested. Between the two wheels 54 of 51, the frame fixing device 30 of the fourth preferred embodiment is in a matrix row at the bottom of the track pit 14. The column mode is combined with four double-coordinate moving platforms 15, each of which is fixed with a longitudinal dovetail rail 151 at the bottom of the track pit 14, and a longitudinal movement is combined with each of the longitudinal dovetail rails 151 in a front-back sliding manner. The platform 152 is provided with a lateral dovetail rail 1521 on each of the longitudinal moving platforms 152, and a lateral moving platform 153 is coupled to each of the lateral dovetail rails 1521.

The frame fixing device 30 of the fourth preferred embodiment of the measuring system for calibrating the automobile spring parameters in the present invention is respectively fixed to the lateral moving platform 153 of the four double-coordinate moving platforms 15 by a second or third preferred embodiment. In the example, the tension fixing bracket 35 is not provided with the electromagnet structure 361 or the airbag structure 369, and is directly fixed on the lateral moving platform 153 by the base 36, and the tension is fixed. The remaining configuration of the bracket 35 is the same as that of the tension fixing bracket 35 described in the second or third preferred embodiment.

The fourth preferred embodiment of the measuring system for calibrating the parameters of the automobile spring in the present invention is adapted to the size of the frame 52 of the different automobile 51, and the respective tension fixing brackets 35 on the right side are adjusted and moved to the right side of the vehicle. Directly below the channel steel 521, the tension fixing brackets 35 on the left side are adjusted and moved directly to the frame groove 521 on the left side of the frame, and then the lifting platform 367 and the clamping head 368 of each tension fixing bracket 35 are lifted and lowered. The height is fixed by fixing the frame channel 521 with the top of each clamping head 368 to fix the height position of the frame 52. The rest of the configuration of the fourth preferred embodiment is the same as the other preferred embodiments described above.

In addition to the foregoing fourth preferred embodiment, the frame fixing device 30 of the present invention is provided with a tension fixing bracket 35 on the lateral moving platform 153 of the four double-coordinate moving platforms 15 respectively. It is also possible to combine other configurations on each lateral movement platform 153 to fix the position of the height of the frame 52.

For example, in the fifth preferred embodiment of the measuring system for calibrating the automobile spring parameters in the present invention shown in FIG. 11 and FIG. 12, the frame fixing device 30 is further combined with the lateral moving platform 153 of each of the double-coordinate moving platforms 15. The pivoting seat 37 is pivotally connected to the screw 371 at each of the pivoting seats 37, and an internal threaded rod 372 is disposed for each of the lower screws 371. An internal screw hole 373 is inserted in the internal threaded rod 372 in the axial direction. A screw 374 is screwed into the bottom of the inner screw hole 373 at the top of each inner screw hole 373, and a steel hook 38 is joined to the top end of each upper screw 374.

In the foregoing, when the frame fixing device 30 of the fifth preferred embodiment of the measuring system for calibrating the automobile spring parameters is used, the position of each pivoting seat 37 is adjusted by each double-coordinate moving platform 15, and the pivoting seats are respectively 37 is moved to the lower side of the corresponding frame channel steel 521, and then the lower screw 371 and the upper screw can be adjusted The rod 374 is screwed to the depth of the threaded rod 372, and the height of each of the steel hooks 38 relative to the pivot joints 37 is changed, so that the height position of each of the steel hooks 38 can be hooked to the bottom edge of the frame channel 521. After the adjustment operation is completed, the positions of the four steel hooks 38 are swung around the pivot joints 37, so that the steel hooks 38 are hooked to the bottom edge of the frame channel 521 to fix the height of the frame 52. position.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention, and other equivalent changes or modifications which are not departing from the spirit of the present invention should be included in the present invention. Within the scope of the patent application.

Claims

A measuring system for calibrating an automobile spring parameter, characterized in that a spring for measuring a vehicle to be tested is disposed between a frame and a wheel, and includes:

a ground, a mounting pit is recessed in the ground, the mounting pit is an elongated pit extending in a left-right direction, and two top plates are disposed across the left and right positions of the mounting pit top;

Two urging means are respectively disposed on the left and right sides of the installation pit, each of the urging means is provided with a pit base at the bottom of the installation pit, and a jack track is arranged in the middle of the pit base. a jack slider is slidably disposed on the jack rail, and a driving screw hole is transversely penetrated in the middle of each of the jack sliders, and two bottom screw seats are combined on each of the bases corresponding to the left and right sides of each of the jack rails. Inserting a bottom screw bearing in each of the bottom screw seats, and inserting a bottom screw between the two bottom screw bearings, each of the bottom screws screwing through each driving screw hole and combining on each of the pit bases a transmission, each of the transmissions is coupled to each of the bottom screws, and a motor is coupled and coupled to each of the transmissions, and a jack is fixed on each of the jack sliders, and the jacks are connected to a pressurized oil pipe, and each of the pressurizations is pressurized. The oil pipe is connected to an oil pressure sensor;

a frame fixing device disposed on the ground and located around the installation pit for fixing a height position of the frame of the automobile to be tested;

At least one deformation sensor, each of the deformation sensors is mounted on a spring or a spring of the automobile to be tested to sense deformation of each spring.
A measuring system for calibrating automotive spring parameters according to claim 1, wherein said frame fixing means is coupled to said ground on a gantry frame, said gantry frame spanning said mounting pit, The top of the gantry crane frame is provided with a top beam, and a movable ram bracket is coupled to the bottom of the top beam in a left-right movement manner, and two vertical straight lines are combined on the left and right sides of the movable ram bracket. The telescopic device incorporates an indenter at the bottom end of each of the linear telescopic devices.
The measuring system for calibrating automobile spring parameters according to claim 1, wherein a plane is formed on a surface of the ground, the frame fixing device comprises four tension fixing brackets, and each of the tension fixing brackets is provided with a a base having a suction structure at a bottom of each of the bases, wherein each of the suction structures can attract and fix the base to the plane, and a screw jack is coupled to the top of each of the bases, and each of the screw lifts a vertical lifting screw is screwed into a fixed speed reducer in each of the bases, and each of the speed reducers is coupled to each of the screw lifts, and a motor is coupled to each of the speed reducers to drive each of the motors. Each of the speed reducers drives each of the lifting screws to rotate and lift, and a lifting platform is coupled to a top end of each of the lifting screws, and a clamping head is disposed on each of the lifting platforms. a stopper is protruded upward from a top surface of each of the clamping heads, and a slider is slidably disposed on a top surface of each of the clamping heads so as to advance and retreat toward the stoppers. The slider is recessed toward the bottom of one side of each of the stoppers to form a frame channel lower edge slot.
A measuring system for calibrating automotive spring parameters as recited in claim 3 wherein said plane is a magnetic plane and said attracting formation is an electromagnet configuration.
The measuring system for calibrating a car spring parameter according to claim 3, wherein the suction structure is an air bag structure, and a negative pressure groove is formed at a bottom of each of the air bag structures, and each of the negative pressure grooves is open toward The lower groove is provided with an exhaust pipe around each of the airbag structures, and the inner ends of the exhaust pipes are in communication with the respective negative pressure grooves.
The measuring system for calibrating automobile spring parameters according to claim 3 or 4 or 5, wherein a turntable is arranged at a top end of each of the lifting screws, and a turntable groove is formed in each of the lifting platforms, and a center of the turntable groove is disposed downwardly, and a top end of each of the lifting screws passes upwardly through each of the shaft holes to set each of the turntables in each of the turntable slots in a self-rotating manner; The opposite sides of the lifting platform are pivotally connected with two clamping hooks respectively extending upward and inwardly, and a hook is protruded downwardly at the end of each of the clamping hooks, and a middle of each of the clamping heads forms a a neck portion, each of the neck portions is located between the ends of the two clamping hooks, and two convex plates extend toward opposite sides of the bottom of each of the clamping heads, and concave surfaces are respectively recessed on the top surfaces of the two convex plates a hook groove is provided, and the two hooks of the two clamping hooks are embedded in the hook grooves, and a gap between a bottom surface of each of the clamping heads and each of the lifting platforms is larger than each of the hook grooves Depth of depth, when each of the clamping heads is pulled up, is combined with each lifting platform by two clamping hooks .
The measuring system for calibrating automobile spring parameters according to claim 1, wherein a concave track pit is provided on the front and rear sides of the installation pit, and the frame fixing device is The bottom of the track pit is combined with four double-coordinate moving platforms in a matrix arrangement. Each double-coordinate moving platform is fixed with a longitudinal dovetail rail at the bottom of the track pit, and the longitudinal sliding view on each longitudinal dovetail rail is combined with a longitudinal direction. a mobile platform, which is provided with a lateral dovetail guide rail on each longitudinal moving platform, and a lateral moving platform is combined on each lateral dovetail guide rail;

The frame fixing device comprises four tension fixing brackets, each of the tension fixing brackets fixes a base on each lateral moving platform, and a screw elevator is coupled at the top of each of the bases, and the screw jacks are screwed together a vertical lifting screw, a speed reducer is fixed in each of the bases, each of the speed reducers is coupled to each of the screw lifts, and a motor is coupled to each of the speed reducers, The motor drives each of the speed reducers to drive each of the lifting screws to lift, and a lifting platform is coupled to a top end of each of the lifting screws, and a clamping head is disposed on each of the lifting platforms at a top of each of the clamping heads. A stop block is arranged to face upwardly, and a slider is slidably disposed on the top surface of each of the clamping heads so as to be movable forward and backward toward the stop block, and each of the sliders faces each stop block. The bottom of the side is concave to form a lower groove of the frame channel steel.
The measuring system for calibrating the parameters of the automobile spring according to claim 7, wherein a turntable is arranged at a top end of each of the lifting screws, a turntable groove is formed in each of the lifting platforms, and each of the turntable slots is A center hole is disposed downwardly, and a top end of each of the lifting screws passes upwardly through each of the shaft holes to set each of the turntables in each of the turntable slots in a self-rotating manner.
The measuring system for calibrating automobile spring parameters according to claim 1, wherein a concave track pit is provided on the front and rear sides of the installation pit, and the frame fixing device is The bottom of the track pit is combined with four double-coordinate moving platforms in a matrix arrangement, and each of the double-coordinate moving platforms fixes a longitudinal dovetail rail at the bottom of the track pit, and slides on the longitudinal dovetail rails before and after Forming a longitudinal movement platform, a lateral dovetail guide rail is disposed on each of the longitudinal movement platforms, and a lateral movement platform is coupled to each of the lateral dovetail guide rails, and a pivot joint is coupled to each of the lateral movement platforms. Each of the pivoting seats pivotally connects a screw, each of the lower screws is screwed with an internally threaded rod, and an upper screw is screwed on the top of each of the internally threaded rods, and a steel is joined at the top end of each of the upper screws. hook.
The measuring system for calibrating automobile spring parameters according to any one of claims 1 to 5, wherein the positioning device is coupled to the ground in the middle of the rear side of the mounting pit. The hoist extends a cable outward and a hook is attached to the outer end of the cable.