CN106767255B

CN106767255B - Comprehensive automobile chassis checking fixture device and operation method thereof

Info

Publication number: CN106767255B
Application number: CN201611225121.1A
Authority: CN
Inventors: 韦明强
Original assignee: Shanghai Yingchuang Precision Automobile Model Technology Co ltd
Current assignee: Shanghai Yingchuang Precision Automobile Model Technology Co ltd
Priority date: 2016-12-27
Filing date: 2016-12-27
Publication date: 2022-09-06
Anticipated expiration: 2036-12-27
Also published as: CN106767255A

Abstract

The invention relates to a comprehensive checking fixture device for an automobile chassis and an operation method thereof.A lifting frame can move up and down along an upright post, and a locking mechanism can lock or release the lifting frame and the upright post, so that the lifting frame is lifted to leave an operation space between the bottom of the chassis checking fixture and the upper surface of an installation platform, an operator can install wheels to be detected on a wheel installation interface of the chassis checking fixture from the operation space, then the lifting frame is lowered to place the chassis checking fixture on the installation platform, and the wheels to be detected are pressed on a wheel positioning detection plate; the wheels can be driven to rotate by rotating the steering wheel for detection, and the steering parameters of the wheels are obtained by the wheel positioning detector; after the detection is finished, the lifting frame is moved upwards, and the wheel to be detected can be conveniently detached from the wheel mounting interface of the chassis detection tool. Therefore, the comprehensive automobile chassis checking fixture device can be used for conveniently mounting, dismounting and detecting wheels to be detected, and the detection efficiency is improved.

Description

Comprehensive automobile chassis checking fixture device and operation method thereof

Technical Field

The invention relates to an automobile chassis comprehensive checking fixture device and an operation method thereof, and belongs to the technical field of automobile manufacturing.

Background

In order to meet market demands, the development of new vehicle models of various domestic host plants is faster at present, and particularly, SUVs and common sports cars basically keep releasing a new vehicle model one year. In the process of trial-manufacturing or detecting the automobile, the parts of the automobile need to be detected. In order to facilitate the part to the car to detect, generally can make the accurate automobile model utensil of size, will wait to examine the part and install on automobile model utensil in order to confirm whether its overall dimension and correlation performance meet the demands. The automobile chassis is an important part in an automobile, the structure of the chassis is complex, a large number of parts are mounted on the chassis, related parts can be detected conveniently, the chassis detection tool with accurate size can be manufactured, a detection steering wheel with the same size and performance as a real automobile is mounted on the chassis detection tool, the steering transmission mechanism is arranged on the chassis detection tool, a wheel mounting interface with the same size as the real automobile is arranged on the chassis detection tool, the wheel to be detected is mounted on the wheel mounting interface, the wheel to be detected can be in transmission connection with the steering transmission mechanism and the detection steering wheel, and the wheel to be detected can be steered by rotating the detection steering wheel. The chassis checking fixture and the related parts mounted on the chassis checking fixture have the same size and performance as those of the real vehicle parts, so that the parts to be detected can be conveniently detected.

The chassis checking fixture is large and complex, and the detection of relevant parameters and performance of automobile wheels is an important function of the chassis checking fixture, but the installation or the disassembly of a part to be detected on the chassis checking fixture and the detection of the performance of the part to be detected are complex and difficult works, and the chassis checking fixture which can be conveniently used is not available in the prior art, so that the part to be detected cannot be efficiently detected.

Disclosure of Invention

In view of the above disadvantages of the prior art, an object of the present invention is to provide a comprehensive testing fixture device for an automobile chassis and an operating method thereof, which can conveniently mount, dismount and test wheels to be tested, thereby improving testing efficiency.

In order to achieve the purpose, the invention provides an automobile chassis comprehensive checking fixture device which comprises an installation platform, an upright post, a lifting frame, a locking mechanism and a chassis checking fixture, wherein the upright post is fixed on the installation platform, and the lifting frame is installed on the upright post and driven by a driving device to move up and down along the upright post; the locking mechanism locks or unlocks the lifting frame and the upright post; the chassis gauge is arranged on the lifting frame; the chassis checking fixture is provided with a wheel mounting interface for mounting a wheel to be detected, the mounting platform is provided with a wheel positioning detection plate, and the wheel positioning detection plate is positioned right below the wheel mounting interface; the wheel positioning detection plate is connected with the wheel positioning detector; the chassis checking fixture is further provided with a steering wheel for detection, and when the wheel mounting interface is provided with a wheel to be detected, the wheel to be detected is in transmission connection with the steering wheel for detection.

Preferably, a steering angle checking device is connected to the detection steering wheel, and the steering angle checking device indicates an angle value corresponding to a rotation angle of the detection steering wheel when the detection steering wheel is rotated.

Preferably, the mounting platform is further provided with a flatness detection plate, and when the wheel mounting interface is provided with the brake pad to be detected, the flatness detection plate is parallel and opposite to the brake pad to be detected and can approach the brake pad to be detected.

Preferably, the chassis inspection device is further provided with a brake detection system, and when the wheel installation interface is provided with a wheel to be inspected, the brake detection system can brake or loosen the wheel to be inspected.

Preferably, a tool car driving inlet is formed in the mounting platform.

Preferably, the locking mechanism comprises a plurality of clamping holes which are distributed on the upright post at equal intervals along the vertical direction, a rotating shaft which is horizontally arranged on the lifting frame, and a clamping plate which is connected on the rotating shaft; the top of the clamping plate is provided with a section of stopping surface, the stopping surface is positioned between the axis of the rotating shaft and the upright post, and the bottom of the lifting frame is pressed on the stopping surface; the clamping plate is provided with a clamping tongue, the rotating shaft is sleeved with a reset torsion spring, and the reset torsion spring tightly twists the clamping plate and enables the clamping tongue to be inserted into the clamping hole.

More preferably, a connecting rod is connected to the clamping plate, and the connecting rod drives the clamping plate to rotate forwards or backwards.

Corresponding to the comprehensive automobile chassis checking fixture device, the invention also provides an operation method of the comprehensive automobile chassis checking fixture device, the operation is carried out by adopting the technical scheme or any preferred technical scheme, and the operation method comprises the following operation steps:

1) the driving device drives the lifting frame to ascend so as to enable an operation space to be reserved between the bottom of the chassis checking fixture and the upper surface of the mounting platform;

2) the locking mechanism locks the lifting frame and the upright post;

3) an operator installs the wheel to be detected on the wheel installation interface of the chassis checking fixture from the operation space between the bottom of the chassis checking fixture and the upper surface of the installation platform;

4) an operator leaves an operation space between the bottom of the chassis checking fixture and the upper surface of the mounting platform;

5) the locking mechanism loosens the lifting frame and the upright post;

6) the driving device drives the lifting frame to descend so as to place the chassis checking fixture on the mounting platform, and the wheel to be detected is pressed on the wheel positioning detection plate;

7) and rotating the steering wheel for detection to drive the wheel to be detected to turn, and acquiring the steering parameters of the wheel to be detected through the wheel positioning detector.

Preferably, in the step 7), steering parameters of the steering wheel are obtained from a steering angle verifying device on the steering wheel for detection, and are compared and verified with steering parameters of the wheel to be detected obtained from the wheel alignment detector.

As mentioned above, the comprehensive checking fixture device for the automobile chassis has the following beneficial effects: in the comprehensive automobile chassis checking fixture device, the chassis checking fixture is arranged on the lifting frame, the lifting frame can move up and down along the upright post, and the lifting frame and the upright post can be locked or released by the locking mechanism, so that the lifting frame is lifted to enable an operation space to be reserved between the bottom of the chassis checking fixture and the upper surface of the mounting platform, an operator can install wheels to be detected on a wheel mounting interface of the chassis checking fixture from the operation space, then the lifting frame is lowered to place the chassis checking fixture on the mounting platform, and the wheels to be detected are pressed on the wheel positioning detection plate; the wheels can be driven to rotate by rotating the steering wheel for detection, and the steering parameters of the wheels are obtained by the wheel positioning detector; after the detection is finished, the lifting frame is moved upwards to enable an operation space to be reserved between the bottom of the chassis detection tool and the upper surface of the mounting platform, and an operator can detach the wheel to be detected from the wheel mounting interface of the chassis detection tool from the operation space. Therefore, the comprehensive automobile chassis checking fixture device can be used for conveniently mounting, dismounting and detecting wheels to be detected, and the detection efficiency is improved.

Drawings

FIG. 1 is a schematic perspective view of an automotive chassis comprehensive testing fixture device according to the present invention;

FIG. 2 is a schematic structural view showing the connection of the lifting frame and the upright post;

FIG. 3 is a perspective view of the mounting platform;

FIG. 4 is a schematic view showing the connection between a steering wheel for detection and a steering angle checking device;

FIG. 5 is a schematic view showing a connection structure of the vertical column, the lifting frame and the locking mechanism, wherein the vertical column, the lifting frame and the locking mechanism only show partial structures;

FIG. 6 is a schematic view of the connection of the stud to the locking mechanism, the stud and locking mechanism only showing a portion of the structure;

fig. 7 shows a schematic view of the connection of the post to the locking mechanism.

Description of the element reference

1 mounting platform 17 latch

2 locking mechanism 18 reset torsion spring

19 limiting column of chassis checking fixture

4 wheel mounting interface 20 first arm

5 second arm of wheel positioning detection plate 21

6 wheel alignment detector 22 sliding slope

7 steering wheel 23 connecting rod for detection

24 long waist holes of 8 steering angle checking device

9 planeness detecting plate 25 sliding pin

10 tooling vehicle driving shaft at driving inlet 26

11 lifting frame 27 rotary crank arm

12 column 28 upper connecting arm

13 fastening hole 29 lower connecting arm

14 rotating shaft 30 driving crank arm

15 first movable gap of card 31

16 stop surface 32 second clearance

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms may be changed or adjusted without substantial change in the technical content.

As shown in fig. 1 and fig. 2, the comprehensive checking fixture device for the automobile chassis provided by the invention comprises a mounting platform 1, an upright post 12, a lifting frame 11, a locking mechanism 2 (see fig. 7) and a chassis checking fixture 3, wherein the upright post 12 is fixed on the mounting platform 1, and the lifting frame 11 is mounted on the upright post 12 and driven by a driving device to move up and down along the upright post 12; the lifting frame 11 and the upright post 12 are locked or unlocked by the locking mechanism 2; the chassis gauge 3 is arranged on the lifting frame 11; the chassis inspection device 3 is provided with a wheel mounting interface 4 for mounting a wheel to be inspected, the mounting platform 1 is provided with a wheel positioning detection plate 5, and the wheel positioning detection plate 5 is positioned right below the wheel mounting interface 4; the wheel positioning detection plate 5 is connected with the wheel positioning detector 6; the chassis inspection device 3 is also provided with a steering wheel 7 for detection, and when the wheel installation interface 4 is provided with a wheel to be detected, the wheel to be detected is in transmission connection with the steering wheel 7 for detection. In the comprehensive automobile chassis checking fixture device, the chassis checking fixture 3 is arranged on the lifting frame 11, the lifting frame 11 can move up and down along the upright post 12 to ascend or descend, and the locking mechanism 2 can lock or unlock the lifting frame 11 and the upright post 12, so that the lifting frame 11 is lifted to leave an operation space between the bottom of the chassis checking fixture 3 and the upper surface of the mounting platform 1, an operator can install wheels to be detected on the wheel mounting interface 4 of the chassis checking fixture 3 from the operation space, then the lifting frame 11 descends to place the chassis checking fixture 3 on the mounting platform 1, and the wheels to be detected are pressed on the wheel positioning detection plate 5; the wheels can be driven to rotate by rotating the steering wheel 7 for detection, and the steering parameters of the wheels are obtained by the wheel positioning detector 6; after the detection is finished, the lifting frame 11 is moved upwards, so that an operation space is reserved between the bottom of the chassis checking fixture 3 and the upper surface of the mounting platform 1, and an operator can detach the wheel to be detected from the wheel mounting interface 4 of the chassis checking fixture 3 from the operation space. Therefore, the comprehensive automobile chassis checking fixture device can be used for conveniently mounting, dismounting and detecting wheels to be detected, and the detection efficiency is improved.

In the technical scheme of the comprehensive checking fixture device for the automobile chassis, as shown in figure 1, four upright posts 12 are installed on an installation platform 1, and a lifting frame 11 is installed among the four upright posts 12 and moves upwards or downwards; the crane 11 can move up and down along the upright post 12 by adopting a multi-center mode, for example, a pulley mechanism, a ball screw mechanism, a hydraulic oil cylinder mechanism and other mechanisms which can realize linear motion can be adopted to drive the crane 11 to move up and down along the upright post 12. The chassis checking fixture 3 is consistent in size with the designed size of a real vehicle and has high precision, so that parts such as wheels, brake devices and wiring harnesses which need to be installed on the vehicle chassis can be detected, in order to facilitate detection of the parts which need to be installed on the vehicle chassis, relevant model checking fixtures can be manufactured according to the designed size of the real vehicle according to needs, and the model checking fixtures are installed on the vehicle chassis according to the assembly relation of the real vehicle, so that more parts can be detected. In a word, the chassis checking fixture 3 and the relevant checking fixture model are high-precision parts manufactured according to the designed size of the real vehicle, and are assembled together according to the assembly relation of the real vehicle, so that the parts to be detected are detected conveniently. For example, the chassis checking fixture 3 is provided with a wheel mounting interface 4 for mounting a wheel to be detected and a steering wheel 7 for detection, when the wheel to be detected is mounted on the wheel mounting interface 4, the wheel to be detected and the steering wheel 7 for detection are in transmission connection through a steering transmission mechanism which is the same as that of a real vehicle, so that the wheel to be detected can be enabled to perform steering actions which are the same as that of the real vehicle by operating the steering wheel 7 for detection, steering parameters of the wheel to be detected are detected by the wheel alignment detector 6, a conclusion whether the wheel to be detected is qualified can be obtained by analyzing the detected steering parameters, and a device which can detect the steering parameters of the wheel, such as a four-wheel aligner, can be adopted as the wheel alignment detector 6. In order to facilitate checking of parameters detected by the wheel positioning detector 6, as shown in fig. 1 and 4, the steering wheel 7 for detection is connected with a steering angle checking device 8, and when the steering wheel for detection rotates, the steering angle checking device 8 indicates an angle value corresponding to a rotation angle of the steering wheel for detection, so that the steering angle checking device 8 can reflect a rotation angle of the steering wheel 7 for detection, and the wheel positioning detector 6 can reflect a steering angle of a wheel to be detected, and a conclusion whether the wheel to be detected is qualified can be better obtained by comparing and analyzing the rotation angle of the steering wheel for detection and the steering angle of the wheel to be detected, if the rotation angle of the steering wheel for detection corresponds to the steering angle of the wheel to be detected, the wheel to be detected is qualified, otherwise, the wheel to be detected is unqualified.

In the technical scheme of the comprehensive checking fixture device for the automobile chassis, the chassis checking fixture 3 is further provided with a brake detection system, when a wheel to be detected is mounted on the wheel mounting interface 4, the brake detection system can brake or loosen the wheel to be detected, the brake detection system is provided with a data acquisition sensor, and when the wheel to be detected is subjected to a brake test, the data acquisition sensor can acquire relevant test data. The wheel installation interface 4 can install the brake block, and whether qualified for the convenience of detecting the brake block, still install flatness detection board 9 on the mounting platform 1, when wheel installation interface 4 installs and waits to detect the brake block, flatness detection board 9 with wait to detect that the brake block is parallel relative and can be close to towards waiting to detect the brake block, with flatness detection board 9 laminating on waiting to detect the face of detecting of waiting to detect the brake block, detect with the feeler gauge and wait to detect the clearance between brake block and the flatness detection board 9 and can reachd whether qualified the plane degree of waiting to detect the brake block.

In the technical scheme of the comprehensive automobile chassis checking fixture device, the part to be detected needs to be installed on the chassis checking fixture 3 or detached from the chassis checking fixture 3 in the test process, in order to facilitate the installation and detachment operations, an operator generally needs to use a tooling vehicle and move the tooling vehicle below the chassis checking fixture 3, and as shown in fig. 1 and 3, a tooling vehicle driving inlet 10 can be arranged on the installation platform 1 so that the tooling vehicle can drive in.

In the technical scheme of the comprehensive checking fixture device for the automobile chassis, the lifting frame 11 and the upright post 12 are locked or loosened by the locking mechanism 2; as a preferable mode, as shown in fig. 5 to 7, the locking mechanism 2 includes a plurality of locking holes 13 arranged on the upright post 12 at equal intervals in the up-down direction, a rotating shaft 14 horizontally arranged on the crane 11, and a locking plate 15 connected to the rotating shaft 14; the top of the clamping plate 15 is provided with a section of stopping surface 16, the stopping surface 16 is positioned between the axis of the rotating shaft 14 and the upright post 12, and the bottom of the lifting frame 11 is pressed on the stopping surface 16; the card board 15 is provided with a latch 17, the rotating shaft 14 is sleeved with a reset torsion spring 18, and the reset torsion spring 18 tightens the card board 15 and enables the latch 17 to be inserted into the card hole 13. When the lifting frame 11 is positioned at a certain position on the upright post 12 and is not moved, the latch 17 on the clamping plate 15 is inserted into the clamping hole 13 on the upright post 12, the bottom of the lifting frame 11 is pressed on the stop surface 16, the stop surface 16 is positioned between the axis of the rotating shaft 14 and the upright post 12, and the rotating shaft 14 is connected on the lifting frame 11, so that the clamping plate 15 cannot rotate, the lifting frame 11 is supported on the stop surface 16 of the clamping plate 15, and the latch 177 of the clamping plate 15 extends into the clamping hole 13 and is supported on the lower side surface of the clamping hole 13, so that the lifting frame 11 cannot descend; when the lifting frame 11 is lifted, the upper side surface of the clamping hole 13 on the upright post 12 can poke the clamping tongue 17 to enable the clamping plate 15 to rotate, so that the clamping tongue 17 is separated from the clamping hole 13, and the lifting frame 11 can be lifted freely; when the lifting frame 11 needs to be lowered, the lifting frame 11 must be moved upwards for a certain distance along the upright post 12 so that the clamping hole 13 pokes the clamping tongue 17 to enable the clamping tongue 17 to be separated from the clamping hole 13, external force is applied to the clamping plate 15 to overcome the torsional force of the reset torsion spring 18 so that the clamping tongue 17 cannot be pushed into the clamping hole 13 by the torsion spring, and the lifting frame 11 can only be lowered. As shown in fig. 5 and 6, a limiting post 19 is disposed on the lifting frame 11, a first arm 20 and a second arm 21 are disposed at two ends of the return torsion spring 18, the first arm 20 abuts against the limiting post 19, and the second arm 21 abuts against the clamping plate 15. Taking the left clamping plate 15 in fig. 5 as an example, when the lifting frame 11 ascends, the clamping tongue 17 on the clamping plate 15 is stirred by the clamping hole 13 to rotate anticlockwise, and the reset torsion spring 18 is further tightened, so that the reset torsion spring 18 generates a torsion force for the clamping plate 15 to rotate clockwise, after the clamping tongue 17 is separated from the clamping hole 13, along with the continuous ascending of the lifting frame 11, the end part of the clamping tongue 17 slides upwards along the upright post 12 and is inserted into the adjacent clamping hole 13 on the upper side of the original clamping hole 13, if the lifting frame 11 continuously ascends, the clamping plate 15 also continuously ascends, and the clamping tongue 17 slides upwards along the upright post 12 and is inserted into the other clamping hole 13; when the lifting frame 11 stops lifting, the clamping tongue 17 extends into the clamping hole 13 on the upright post 12 under the action of the reset torsion spring 18, the bottom of the lifting frame 11 is pressed on the stop surface 16 at the top of the clamping plate 15, the clamping plate 15 does not rotate any more, and the lifting frame 11 is supported on the upright post 12 by the clamping plate 15 and cannot move downwards. In order to allow the card 15 to rotate flexibly when the crane 11 is lifted, as shown in fig. 5, the stop surface 16 is higher than the rest of the top of the card 15, and the rear part of the stop surface 16 is provided with a first movable gap 31 to allow the card 15 to rotate a certain angle. The top of the clamping tongue 17 is provided with a section of sliding slope surface 22, and the sliding slope surface 22 slides relative to the upper side surface of the clamping hole 13 where the lifting frame 11 is positioned when the lifting frame 11 lifts. When the lifting frame 11 stops at a certain position of the upright 12, a second clearance 32 is provided above the sliding slope 22 of the catch plate 15, so that the catch plate 15 can rotate at a certain angle. Referring to fig. 5 and 7, the lifting frame 11 is connected to four upright posts 12, the four upright posts 12 are divided into two upright posts 12 located on the left side and two upright posts 12 located on the right side, the left and right sides of the lifting frame 11 are respectively provided with two rotating shafts 14 coaxially arranged, the two rotating shafts 14 on the left side of the lifting frame 11 are parallel to the axes of the two rotating shafts 14 on the right side of the lifting frame 11, each rotating shaft 14 is connected with a clamping plate 15, the clamping tongues 17 of the clamping plates 15 connected to the two rotating shafts 14 on the left side of the lifting frame 11 are respectively inserted into the clamping holes 13 on the two upright posts 12 on the left side towards the left, and the clamping tongues 17 of the clamping plates 15 connected to the two rotating shafts 14 on the right side of the lifting frame 11 are respectively inserted into the clamping holes 13 on the two upright posts 12 on the right side towards the right. Four corners of the lifting frame 11 are connected to the four upright posts 12, when the lifting frame 11 stops lifting, the clamping tongues 17 of each clamping plate 15 are clamped into the clamping holes 13 on the upright posts 12 corresponding to the clamping tongues 17, the lifting frame 11 can be stably supported between the four upright posts 12, the distance between every two adjacent clamping holes 13 on each upright post 12 is equal, and therefore, for any clamping hole 13 on one upright post 12, one clamping hole 13 is arranged at the same height position of the other three upright posts 12, the clamping tongues 17 on each clamping plate 15 can be simultaneously clamped into the corresponding clamping holes 13, and the lifting frame 11 is kept stable. When the lifting frame 11 needs to be lowered, the lifting frame 11 needs to be moved upwards for a certain distance, the clamping tongues 17 are separated from the clamping holes 13 by rotating the clamping plates 15, in order to drive the clamping plates 15 to rotate, each clamping plate 15 is connected with a connecting rod 23, and the connecting rods 23 drive the clamping plates 15 to rotate forwards or backwards; the card board 15 connected with the two rotating shafts 14 on the left side of the lifting frame 11 and the card board 15 connected with the two rotating shafts 14 on the right side of the lifting frame 11 have opposite rotating directions. A driving shaft 26 can be arranged at the bottom of the lifting frame 11, a rotary crank arm 27 is connected to the driving shaft 26, and the connecting rod 23 is connected with the rotary crank arm 27, so that the rotary crank arm 27 can drive the driving shaft 26 to rotate, and each clamping plate 15 is driven to rotate. Referring to fig. 5 and 7, two rotation crank arms 27 are connected to the driving shaft 26, the two rotation crank arms 27 rotate synchronously, each rotation crank arm 27 has an upper connecting arm 28 and a lower connecting arm 29, the card board 15 connected to the left rotation shaft 14 is connected to the upper connecting arm 28 through the connecting rod 23, the card board 15 connected to the right rotation shaft 14 is connected to the lower connecting arm 29 through the connecting rod 23, and when the rotation crank arm 27 rotates counterclockwise, the latch 17 of each card board 15 is disengaged from the latch hole 13. In order to facilitate driving the driving shaft 26, as shown in fig. 7, a driving crank 30 is further connected to the driving shaft 26, and the driving crank 30 is driven by a driving mechanism, and the driving mechanism is controlled by a control device to move. In order to facilitate the connection between the connecting rod 23 and the catch plate 15, as shown in fig. 6, a long waist hole 24 is formed in the catch plate 15, a sliding pin 25 is disposed in the long waist hole 24, and the connecting rod 23 is connected to the sliding pin 25. The driving mechanism can drive the driving shaft 26 to rotate to enable each clamping plate 15 to be separated from the clamping hole 13 on the upright post 12 and lock the driving shaft 26 in the state, so that the self-locking state of the lifting frame 11 is released, the lifting frame 11 can controllably move downwards, the lifting frame 11 can be driven by a hydraulic oil cylinder to ascend or downwards, and the hydraulic oil cylinder is controlled by the control device to move; the hydraulic cylinder dwell time is long, and like this, the crane 11 descends comparatively gently.

In the technical scheme of the comprehensive automobile chassis checking fixture device, when a steering parameter of a wheel to be checked is tested, the chassis checking fixture 3 needs to be placed on the mounting platform 1, in order to enable the chassis checking fixture 3 to be accurately positioned with the mounting platform 1, as shown in fig. 1 and 3, a plurality of positioning blocks 33 can be arranged on the mounting platform 1, and a positioning structure (not shown) matched with the positioning blocks 33 in a positioning mode is arranged at the bottom of the chassis checking fixture 3, so that the chassis checking fixture 3 can be accurately positioned with the mounting platform 1 when placed on the mounting platform 1, and the positioning blocks 33 are preferably V-shaped blocks.

The invention also provides an operation method of the comprehensive automobile chassis checking fixture device, which adopts the technical scheme or any preferred technical scheme to operate and comprises the following operation steps:

1) the driving device drives the lifting frame 11 to ascend so as to enable an operation space to be reserved between the bottom of the chassis checking fixture 3 and the upper surface of the mounting platform 1;

2) the locking mechanism 2 locks the lifting frame 11 and the upright post 12;

3) an operator installs a wheel to be detected on a wheel installation interface 4 of the chassis checking fixture 3 from an operation space between the bottom of the chassis checking fixture 3 and the upper surface of the installation platform 1;

4) an operator leaves an operation space between the bottom of the chassis checking fixture 3 and the upper surface of the mounting platform 1;

5) the locking mechanism 2 releases the lifting frame 11 and the upright post 12;

6) the driving device drives the lifting frame 11 to descend so as to place the chassis checking fixture 3 on the mounting platform 1, and the wheel to be detected is pressed on the wheel positioning detection plate 5;

7) the steering wheel 7 for rotation detection drives the wheels to turn, and steering parameters of the wheels to be detected are obtained through the wheel positioning detector 6.

In order to conveniently verify whether the steering parameters of the wheel to be detected obtained from the wheel positioning detector 6 are accurate, preferably, in the step 7), the steering parameters of the steering wheel to be detected are obtained from the steering angle verifying device 8 on the steering wheel to be detected and compared with the steering parameters of the wheel to be detected obtained from the wheel positioning detector 6 for verification, if the rotation angle of the steering wheel to be detected corresponds to the steering angle of the wheel to be detected, the wheel to be detected is qualified, otherwise, the wheel to be detected is unqualified.

The invention discloses an automobile chassis comprehensive detection device which is characterized in that a steering system, a brake system, a suspension system and the like of an automobile are manufactured into detection devices with accurate sizes and are integrally installed on a chassis detection device, parts of each detection device can be interchangeably assembled with real objects of the real automobile, parameters such as steering angles and front inclination angles of front wheels are detected by combining a four-wheel positioning instrument to obtain static data of different parts, and then all groups of static data are combined to carry out road test to obtain actual driving feeling and evaluate, so that a related size precision standard is established. Then, detecting and controlling the size precision of each sub-assembly according to the standard; the comprehensive automobile chassis checking fixture device can simulate the actual automobile state to carry out driving operation including steering, braking and other actions, and can detect the performance parameters of each sub-assembly in the simulation process.

Based on the technical scheme of the embodiment, the comprehensive automobile chassis checking fixture device can be used for conveniently mounting, dismounting and detecting the wheels to be detected, and the detection efficiency is improved.

In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A comprehensive detection tool device for an automobile chassis is characterized by comprising an installation platform (1), an upright post (12), a lifting frame (11), a locking mechanism (2) and a chassis detection tool (3), wherein the upright post (12) is fixed on the installation platform (1), and the lifting frame (11) is installed on the upright post (12) and driven by a driving device to move up and down along the upright post (12); the locking mechanism (2) locks or unlocks the lifting frame (11) and the upright post (12); the chassis gauge (3) is arranged on the lifting frame (11);

the chassis checking fixture (3) is provided with a wheel mounting interface (4) for mounting a wheel to be detected, the mounting platform (1) is provided with a wheel positioning detection plate (5), and the wheel positioning detection plate (5) is positioned right below the wheel mounting interface (4); the wheel positioning detection plate (5) is connected with the wheel positioning detector (6); the chassis checking fixture (3) is also provided with a steering wheel (7) for detection, and when the wheel mounting interface (4) is provided with a wheel to be detected, the wheel to be detected is in transmission connection with the steering wheel (7) for detection;

the mounting platform (1) is further provided with a flatness detection plate (9), and when the wheel mounting interface (4) is provided with a brake pad to be detected, the flatness detection plate (9) is parallel and opposite to the brake pad to be detected and can approach the brake pad to be detected;

the lifting frame (11) is lifted to enable an operation space to be reserved between the bottom of the chassis checking fixture (3) and the upper surface of the mounting platform (1), and an operator can mount the wheel to be detected on the wheel mounting interface (4) of the chassis checking fixture (3) or dismount the wheel to be detected from the wheel mounting interface (4) of the chassis checking fixture (3) from the operation space.

2. The comprehensive automotive chassis checking fixture device according to claim 1, characterized in that: the steering wheel (7) for detection is connected with a steering angle checking device (8), and when the steering wheel (7) for detection rotates, the steering angle checking device (8) indicates an angle value corresponding to the rotation angle of the steering wheel (7) for detection.

3. The comprehensive automotive chassis checking fixture device according to claim 1, characterized in that: the chassis inspection device (3) is further provided with a brake detection system, and when the wheel installation interface (4) is provided with a wheel to be detected, the brake detection system can brake or loosen the wheel to be detected.

4. The comprehensive automotive chassis checking fixture device according to claim 1, characterized in that: and a tool car driving inlet (10) is arranged on the mounting platform (1).

5. The comprehensive automotive chassis checking fixture device according to claim 1, characterized in that: the locking mechanism (2) comprises a plurality of clamping holes (13) which are distributed on the upright post (12) at equal intervals along the vertical direction, a rotating shaft (14) which is horizontally arranged on the lifting frame (11), and a clamping plate (15) which is connected on the rotating shaft (14); the top of the clamping plate (15) is provided with a section of stop surface (16), the stop surface (16) is positioned between the axis of the rotating shaft (14) and the upright post (12), and the bottom of the lifting frame (11) is pressed on the stop surface (16); the clamping plate (15) is provided with a clamping tongue (17), the rotating shaft (14) is sleeved with a reset torsion spring (18), and the reset torsion spring (18) tightly twists the clamping plate (15) and enables the clamping tongue (17) to be inserted into the clamping hole (13).

6. The automobile chassis comprehensive testing fixture device according to claim 5, characterized in that: the clamping plate (15) is connected with a connecting rod (23), and the connecting rod (23) drives the clamping plate (15) to rotate forwards or backwards.

7. An operation method of the comprehensive automobile chassis checking fixture device is characterized in that the comprehensive automobile chassis checking fixture device as claimed in any one of claims 1 to 6 is used for operation, and the operation method comprises the following operation steps:

1) the driving device drives the lifting frame (11) to ascend so as to enable an operation space to be reserved between the bottom of the chassis checking tool (3) and the upper surface of the mounting platform (1);

2) the locking mechanism (2) locks the lifting frame (11) and the upright post (12);

3) an operator installs a wheel to be detected on a wheel installation interface (4) of the chassis checking fixture (3) from an operation space between the bottom of the chassis checking fixture (3) and the upper surface of the installation platform (1);

4) an operator leaves an operation space between the bottom of the chassis checking fixture (3) and the upper surface of the mounting platform (1);

5) the locking mechanism (2) loosens the lifting frame (11) and the upright post (12);

6) the driving device drives the lifting frame (11) to descend so as to place the chassis checking fixture (3) on the mounting platform (1), and the wheel to be detected is pressed on the wheel positioning detection plate (5);

7) the steering wheel (7) for rotation detection drives the wheel to be detected to turn, and the steering parameters of the wheel to be detected are obtained through the wheel positioning detector (6).

8. The operation method of the automobile chassis comprehensive testing fixture device according to claim 7, characterized in that: the steering wheel (7) for detection is connected with a steering angle checking device (8);

and in the step 7), obtaining steering parameters of the steering wheel for detection from a steering angle verifying device (8) on the steering wheel for detection, and comparing and verifying the steering parameters with the steering parameters of the wheels to be detected obtained from the wheel positioning detector (6).