CN114216690B

CN114216690B - Automobile anti-collision protection device strength detection system

Info

Publication number: CN114216690B
Application number: CN202011398263.4A
Authority: CN
Inventors: 王晓友; 廖春虎; 刘阳; 周凌寒; 廖航
Original assignee: Xiangyang Daan Automobile Test Center Co Ltd
Current assignee: Xiangyang Daan Automobile Test Center Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2022-08-09
Anticipated expiration: 2040-12-04
Also published as: CN114216690A

Abstract

The invention relates to a strength detection system of an automobile anti-collision protection device, which consists of a locking mechanism (1) and a loading and attachment mechanism (2), wherein the locking mechanism (1) is arranged on a bottom plate (13), the locking mechanism (1) is provided with a pull rope (3), an upright post (4), a tensioner (5) and a chassis positioning piece (6), the chassis positioning piece (6) connected with a detected vehicle (20) is provided with a horizontal sliding rail (7) for horizontal displacement adjustment and a chassis oil cylinder (8) for vertical displacement adjustment, a loading assembly (11) is connected with a loading oil cylinder (10) and a motor (18), the loading oil cylinder (10) is provided with a pull rod displacement sensor (18) and can measure the relative displacement between a piston rod and a cylinder body in real time, a plurality of gantry protections (19) arranged on two sides of the bottom plate (13) are overlapped to form multilayer protections, and the protection isolation of a loading test area is realized. The invention has the advantages of simple structure, accurate control, convenient electro-hydraulic servo adjustment and reliable high-point loading capability.

Description

Automobile anti-collision protection device strength detection system

Technical Field

The invention belongs to the technical field of automobile safety detection, and particularly relates to an automobile anti-collision protection device strength detection system.

Background

Chinese patent application CN102829981A discloses a lower part protector intensity testing platform behind car/trailer, chinese patent application CN104374583A discloses a vehicular vehicle protection loading test device, or utilizes vehicle linking bridge to fix a position testing platform and test vehicle, or utilizes bearing beam and high strength couple to be connected the location by test vehicle and test loading device, its structure and function all have the defect: the adaptability of the detected vehicle type is poor, the application range is relatively limited, the relative position can not be adjusted, the vehicle positioning structure is limited, the loading displacement is difficult to avoid, and the detection result has errors.

Disclosure of Invention

The invention aims to provide a strength detection system for a vehicle protection device, which can effectively expand the adaptation range of a detected vehicle type, reliably avoid the loading displacement in the detection test process and greatly improve the accuracy of a detection result.

The technical scheme of the invention is as follows:

the design is a strength detection system of an automobile anti-collision protection device, which consists of a locking mechanism and a loading and attaching mechanism. The locking mechanism is arranged on the bottom plate and provided with a pull rope, a stand column, a tensioner and a chassis positioning piece, one end of the pull rope is connected with the stand column, and the other end of the pull rope is connected with a crossbeam of the vehicle to be detected through the tensioner. The chassis positioning piece is connected with a chassis of the vehicle to be detected, a horizontal sliding rail and a chassis oil cylinder are arranged on the chassis positioning piece, the horizontal sliding rail is used for adjusting the horizontal displacement of the chassis positioning piece, and the chassis oil cylinder is used for adjusting the vertical displacement of the chassis positioning component.

The loading and attachment mechanism is provided with a loading assembly, a loading oil cylinder, a motor and gantry protections, the loading assembly is respectively connected with the loading oil cylinder and the motor, the loading oil cylinder is provided with a pull rod displacement sensor, relative displacement and horizontal displacement between a piston rod and a cylinder body can be measured in real time, a plurality of gantry protections are arranged on two sides of a bottom plate, and the gantry protections can be overlapped to form multilayer protections, so that protection isolation of a loading test area is realized.

The beneficial technical effects of the invention are as follows: because the loading and attachment mechanism is provided with three groups of loading assemblies, the loading assemblies of each group can move in the horizontal direction and the vertical direction through the longitudinal slide rail, and the two-dimensional free adjustment of the loading assemblies is realized. Meanwhile, the clutch is arranged on the longitudinal slide rail, so that single-point loading, multipoint synchronous loading and multipoint asynchronous loading can be realized. In addition, the longitudinal slide rail is provided with a pull rod displacement sensor, so that the relative displacement and the horizontal displacement between the piston rod and the cylinder body can be measured in real time. The invention also has the advantages of simple structure, accurate control, convenient electro-hydraulic servo adjustment and reliable high-point loading capability.

Drawings

Fig. 1 is a schematic structural view. In the figure, 1, a locking mechanism, 2, a loading and attaching mechanism, 3, a pull rope, 4, a column, 5, a tensioner, 6, a chassis positioning piece, 7, a horizontal sliding rail, 8, a chassis oil cylinder, 9, a longitudinal sliding rail, 10, a loading oil cylinder, 11, a loading assembly, 12, a pull rod displacement sensor, 13, a base plate, 14, a support body, 15, a servo valve, 16, a clutch, 17, a pump station, 18, a motor, 19, a gantry protection, 20, a detected vehicle, 21, a fisheye horizontal bubble, 22, a laser type proximity switch, 23, a force sensor, 24, a loading plate, 25 and a ball head ball sleeve.

Detailed Description

The invention will be further elucidated on the basis of the embodiments provided in the drawing.

A first portion, a structural member.

The embodiment comprises the following steps: the locking mechanism 1 is used for loading and allocating the mechanism 2;

the lock mechanism 1 includes: the device comprises a pull rope 3, a vertical column 4, a tensioner 5, a chassis positioning piece 6, a horizontal slide rail 7 and a chassis oil cylinder 8;

the loading and attachment means 2 comprise: the device comprises a longitudinal slide rail 9, a loading oil cylinder 10, a loading assembly 11, a pull rod displacement sensor 12, a bottom plate 13, a supporting body 14, a servo valve 15, a clutch 16, a pump station 17, a motor 18, a gantry protection 19, a detected vehicle 20, a fisheye horizontal bubble 21, a laser type proximity switch 22, a force sensor 23, a loading plate 24 and a ball head ball sleeve 25.

And a second part, the detection process.

The strength detection system of the automobile anti-collision protection device is an integrated strength detection system, and is suitable for strength detection of various protection devices of automobiles. According to the national standard GB 11567-2017 requirements for protecting the side surfaces and the rear lower part of automobiles and trailers, the strength detection of the lower part protection device is taken as an example, and the detailed detection implementation process is as follows:

the first step is as follows: and (5) fixing the vehicle to be detected. The subject vehicle 20 is fixed by double fixing of the lock mechanism 1. The longitudinal direction is fixed through a pull rope 3, an upright post 4 and a tensioner 5 at the left front part, the right front part, the left rear part and the right rear part of a detected vehicle 20, one end of the pull rope 3 is connected with the upright post 4, the other end of the pull rope 3 is connected with a crossbeam of a vehicle 18 to be detected through the tensioner 5, and the four-angle fixation ensures the detected vehicle to move towards the direction; the fixing of vertical direction is realized through chassis setting element 6, the chassis of waiting to examine vehicle 18 is connected to chassis setting element 6, be provided with horizontal slide rail 7 and chassis hydro-cylinder 8 on the chassis setting element 6, horizontal slide rail 7 is used for the horizontal direction displacement of chassis setting element 6 to adjust, chassis hydro-cylinder 8 is used for the vertical direction displacement of chassis setting element 6 to adjust, horizontal and vertical direction displacement are adjusted in order to adapt to different vehicle structure demands, the fixed upper and lower bunch of vehicle in the loading test in-process that avoids of waiting to examine of chassis setting element moves. The double fixation of the checked vehicle through the locking mechanism effectively improves the accuracy of the test.

The second step is that: and setting safety protection. The safety protection during the loading process is realized by a plurality of gantry protection 19 structures arranged on both sides of the bottom plate 13 of the loading and attaching mechanism 2. A plurality of parallel guide rails are arranged on two sides of the bottom plate 13, a gantry protection 19 is arranged on each parallel guide rail, the gantry protection 19 can be overlapped and extended, the gantry protection 19 is extended before a test, a loading test area is separated, and personal safety of operators is guaranteed.

The third step: and (4) loading preparation. The loading assembly 11 is provided with a fisheye horizontal bubble 21 and a laser type proximity switch 22 in the vertical direction, the head end of the cylinder body of the loading oil cylinder 10 is provided with a laser displacement sensor 23, the light beam reflection point of the laser displacement sensor 23 is selected from the vertical plane of the top end of the loading assembly 11, and a cross laser light source vertical to the end face is arranged in the loading assembly 11 close to the side end face of the vehicle to be measured. Manually adjusting the loading assembly 11 to enable bubbles of the fisheye horizontal bubbles 21 on the loading assembly 11 to be arranged at the central position, and opening a cross laser light source which is arranged in the loading assembly 11 and is close to the end face of the side of the detected vehicle, wherein the cross laser light source is vertical to the end face.

The fourth step: and (5) loading and implementing.

Variable loading form: the loading and attachment mechanism 2 is provided with three groups of loading assemblies 11, and each group of loading assemblies 11 can move in the horizontal direction and the vertical direction through the longitudinal slide rail 9, so that the two-dimensional free adjustment of the loading assemblies 11 is realized. The clutch 16 is arranged on the longitudinal slide rail 9, and single-point loading, multipoint synchronous loading and multipoint asynchronous loading are realized through the clutch 16. The single-point loading, the multipoint synchronous loading and the multipoint asynchronous loading can be suitable for the strength detection of various vehicle anti-collision protection devices of different types, including the rear lower part protection of an automobile/trailer, the front lower part protection of the automobile and the rear protection of a normal-pressure tank truck.

A stable loading mode: the tail end of the force sensor 23 is connected with the head end of the loading oil cylinder 10 through threads, and the head end of the force sensor 23 is connected with the loading plate 24 through a ball head ball sleeve 25. In the detection process of the strength of the vehicle protection device, the force is decomposed in the actual loading process, the sample piece can slightly move in a string manner, and the problem of uneven stress of the direction deviation hydraulic cylinder in the loading process can be effectively solved through the design of the ball head ball sleeve structure.

Effective displacement measurement: the longitudinal slide rail 9 is provided with a pull rod displacement sensor 12 which can measure the relative displacement and the horizontal displacement between the piston rod and the cylinder body in real time. The stay wire displacement sensor is generally adopted in the prior art, the problem that an included angle is formed between a stay wire and the sensor is easy to occur, the measured displacement cannot be guaranteed to be completely horizontal, and the measurement error is large.

Claims

1. The utility model provides an automobile anti-collision protection device intensity detecting system comprises locking mechanism (1) and loading and attached mechanism (2), its characterized in that:

the locking mechanism (1) is arranged on the base plate (13), the locking mechanism (1) is provided with a pull rope (3), an upright post (4), a tensioner (5) and a chassis positioning piece (6), one end of the pull rope (3) is connected with the upright post (4), and the other end of the pull rope (3) is connected with a crossbeam of a detected vehicle (20) through the tensioner (5); the chassis positioning piece (6) is connected with a chassis of the detected vehicle (20), a horizontal sliding rail (7) and a chassis oil cylinder (8) are arranged on the chassis positioning piece (6), the horizontal sliding rail (7) is used for adjusting the horizontal displacement of the chassis positioning piece (6), and the chassis oil cylinder (8) is used for adjusting the vertical displacement of the chassis positioning piece (6);

loading and attachment mechanism (2) are provided with loading subassembly (11), loading cylinder (10), motor (18), longmen protection (19), loading subassembly (11) set up on supporter (14), connect loading cylinder (10) and motor (18) respectively, be provided with pull rod displacement sensor (12) in loading cylinder (10), relative displacement and horizontal displacement between piston rod and the cylinder body can be measured in real time, the both sides of bottom plate (13) are provided with a plurality of longmen protection (19), each longmen protection (19) can superpose and form multilayer protection, thereby realize the protection in loading test district and keep apart.