CN117928913A - Testing device and testing method for anti-pinch protection of urban subway vehicle door - Google Patents

Abstract

The application relates to the field of metro vehicle performance detection, in particular to a testing device and a testing method for anti-pinch protection of a metro vehicle door in an urban area, wherein the testing device comprises a testing table body serving as a main body supporting framework; the two opposite ends of the two test arms are hinged to the test bench body, and the opposite ends are used for abutting against the two side doors and closing the two test arms along with the doors to rotate in opposite directions; the clamping force sensor is arranged at the part of the test bench body corresponding to the space between the two test arms, the two-way measuring head of the clamping force sensor is respectively abutted against the two test arms, and the two test arms rotate in opposite directions to clamp the two-way measuring head at two sides so as to transmit pressure; the guide mechanism is arranged at one side of the test bench body and connected with the two test arms, and guides the two test arms to positively displace; the lifting mechanism is arranged on the test table body, is connected with the test arm and is used for adjusting the height of the test arm. The method has the effects of optimizing the testing process of the clamping force of the tester on the metro vehicle and improving the accuracy of the metro door clamping force test.

Description

Testing device and testing method for anti-pinch protection of urban subway vehicle door

Technical Field

The application relates to the field of metro vehicle performance detection, in particular to a testing device and a testing method for anti-pinch protection of doors of urban metro vehicles.

Background

With the rapid development of economy, the level of urbanization has increased, subways are popular as an urban rail transit system in new first-line cities, and more people select subways for traveling. The subway can change the structure of urban traffic travel mode, has the advantage of reducing the endless parking time compared with a bus, optimizes the travel planning mode of people, and more importantly, the subway is arranged underground as a main line of urban traffic, so that the efficiency of the urban traffic system is improved and the space resources of the city are not additionally occupied.

Although the related technology of subway manufacturing is mature, the subway manufacturing has a plurality of parts, components and systems, and related technicians are required to maintain and test the subway manufacturing regularly, so that the anti-pinch protection test of the subway vehicle is one of important items for maintenance and test regularly.

The anti-pinch protection of the metro vehicle means that the door can detect an obstacle according to the resistance when the door is closed, and if the obstacle is detected to be blocked, the door can be automatically reopened; in reality, the time for driving passengers exists, when the car door is about to be closed or is about to be closed, the anti-pinch protection can detect that the passengers are automatically opened when being clamped by the door, so that the physical safety of the passengers is ensured.

When the door of the metro vehicle is closed, passengers are clamped, if the clamping force is too large to easily hurt the passengers, the closing speed is too slow due to the fact that the clamping force is too small, more passengers are enabled to rush to the vehicle, and the probability of trampling accidents is increased. Therefore, regular testing of anti-pinch protection of metro vehicles is necessary.

The existing test mode basically adopts an accurate clamping force sensor as a main test element, a tester places a test end of the clamping force sensor between doors of a subway vehicle, and records data sent by the clamping force sensor through a control end; the traditional car door clamping force testing mode principle is simpler, has more defects such as complex operation, and test personnel need to be repeatedly aligned when installing the clamping force sensor, and the testing ends at two ends of the clamping force and the door of the metro car are kept in the same vertical plane, and secondly, when testing the clamping force difference value at different heights, the test personnel need to additionally install a lifting tool, so that the traditional testing mode is complex in installation process.

Aiming at the related technology, a piece of test software is designed aiming at the test process of the subway door so as to simplify the test process of the clamping force of a tester on the subway vehicle and improve the accuracy of the test process of the clamping force of the subway door.

Disclosure of Invention

In order to optimize the testing process of a tester on the clamping force of the metro vehicle and improve the accuracy of the testing of the clamping force of the metro vehicle door, the application provides a testing device and a testing method for the anti-clamping protection of the metro vehicle door.

The application provides a testing device for anti-pinch protection of an urban subway vehicle door, which adopts the following technical scheme:

a testing arrangement that is used for urban subway vehicle door to prevent pressing from both sides protection, including being the testboard body of main part braced architecture, its characterized in that: also comprises;

The two opposite ends of the two test arms are hinged to the test bench body, and the opposite ends are used for abutting against the two side doors and closing the two test arms along with the doors to rotate in opposite directions;

the clamping force sensor is arranged at the part of the test bench body corresponding to the space between the two test arms, the two-way measuring head of the clamping force sensor is respectively abutted against the two test arms, and the two test arms rotate in opposite directions to clamp the two-way measuring head at two sides so as to transmit pressure;

the guide mechanism is arranged at one side of the test table body and connected with the two test arms, and guides the forward displacement of the two test arms when rotating;

the lifting mechanism is arranged on the test table body, is connected with the test arm and is used for adjusting the height of the test arm.

By adopting the technical scheme, the automatic adjustment process of the metro vehicle door test is increased, and the debugging time of a tester in the test is saved; according to the technical scheme, the metro vehicle before testing needs to be classified to a simulation platform of a test point, the opening of the metro vehicle door is kept, a tester pushes the test platform body towards the two side doors until the test arm pushes between the two side doors, the tester controls the two side doors to be closed, the one side door abuts against the corresponding test arm, the test arm rotates in opposite directions along with the closing of the two side doors around a hinge point of the test platform body, and then the two test arms are driven to be gradually clamped by the clamping force sensor at the middle position; in the scheme, the bidirectional measuring head for clamping the force sensor is 180 degrees, and corresponds to the opposite test arms on the two sides on the same straight line; a tester stands on one side of the test bench, when two test arms are clamped in opposite directions, the clamping force of the test arms is measured by the clamping force sensor, a curve is calculated and drawn according to the closing degree of the door of the metro vehicle, and the curve is shown on the tester through a display screen on the test bench; the tester should set the displacement distance of the car door as the horizontal axis and the clamping force value as the vertical axis in the two-dimensional plane of the test bench, observe the force stability in the closing process of the car door, avoid the clamping force from increasing rapidly at a certain distance due to the matching problem of the driving device, and lead to getting on passengers with damaged driving time; furthermore, the test person should pay attention to the clamping force curve of the two side doors at a distance of 20cm-30cm, at which the doors are about to close, and which is prone to pinching accidents.

Optionally, the test arm includes;

the test arm ends are arranged on the opposite sides of the two test arms and are made of soft materials and used for abutting against the vehicle doors on the two sides;

One end of the test arm rod is hinged with the test table body, and the other end of the test arm rod is connected with a sliding block in a sliding manner along the length direction of the test arm rod;

and the test arm end is hinged with a sliding block on the test arm rod.

According to the technical scheme, on one hand, the simulation test is carried out as far as possible, on the other hand, the sliding directionality of the test arm end is maintained, the test arm end is kept in stable contact with the vehicle door in the process of closing the vehicle door, in the scheme, the test arm end is used for being abutted against the middle part of one side of the vehicle door to vertically arrange the curved arc part so as to ensure good contact with the vehicle door, the test arm end is made of soft materials and can realize the condition that a person breaks the vehicle door reversely under the condition of simulating part, the person acts on the vehicle door, the arm part is abducted along with the closing of the vehicle door when the palm part is extruded, the simulation degree can be improved through the soft materials, in addition, the soft materials can simulate the compression degree of the human body when the vehicle door clamps the human body, and the deformation degree of the human body when the human body is stressed is transmitted to the force of the clamping force of the force sensor through the extrusion deformation blocking part of the soft materials, so that the experimental simulation degree is further improved; in addition, considering the mode that the test arm rod is hinged with the test platform body, the test arm end is clamped along with the opposite direction of the vehicle door, and the test arm end rotates around the hinge point of the test arm rod and the test platform body and cannot keep the same linear motion, so that the test arm end is gradually separated, therefore, a sliding block is arranged to slide on the test arm rod, the test arm end is hinged on the sliding block, and the linear displacement of the test arm end is realized in a mode that the sliding block slides to yield and the two ends of the test arm rod are hinged; in the process of clamping the vehicle doors on two sides, the test arm ends push the test arm rods to clamp in opposite directions, and the rotation trend of the test arm ends drives the sliding blocks to slide on the test arm rods.

Optionally, the guiding mechanism comprises;

The first guide rod is arranged on the test bench body and horizontally arranged below the two test arms, and is connected with a guide block fixedly connected to the ends of the test arms in a sliding manner;

the support piece is connected to the first guide rod in a sliding manner, and one end of the support rod is fixedly connected with the guide block.

By adopting the technical scheme, the guide block is connected with the test arm end, and simultaneously slides on the first guide rod along the axial direction of the first guide rod, and the opposite linear sliding of the test arm end is ensured through the horizontal guide of the first guide rod; however, considering the clamping along with the both sides door, prevent pressing from both sides tight protection disqualification when the both sides door presss from both sides tight excessively, when two test arm bars are too close promptly, damage clamping force sensor easily, consequently set up support piece support guide block, make spacing to the slip distance of test arm end through the displacement distance of restriction guide block to set up a minimum to the contained angle between two test arm bars, and then protect clamping force sensor.

Optionally, the support comprises;

The nitrogen spring is horizontally arranged above the first guide rod, and the end part of the piston rod of the nitrogen spring is in butt joint with the guide block;

the support plate is arranged on the first guide rod and fixedly connected to the end part of the cylinder body of the nitrogen spring.

By adopting the technical scheme, the nitrogen spring is used as a supporting piece, the supporting plate is arranged to fix the nitrogen spring above the first guide rod, the piston rod of the nitrogen spring is abutted with the guide block, the elastic trend of the guide block is given, the rigid clamping force is buffered, and collision damage is avoided; the nitrogen spring adopted in the scheme has the advantages of light weight, lighter weight compared with other elastic pieces, and the nitrogen spring can provide the same or larger elastic force in a relatively smaller volume due to the low density and high pressure characteristics of nitrogen; the stability is strong, the nitrogen spring has better linear characteristic, provides relatively constant force in the whole compression stroke range, and is suitable for the condition that the scheme needs to be controlled accurately; the adjustable performance of the nitrogen spring is achieved, the air cavity of the nitrogen spring is connected through the air connecting pipe, the strength and damping characteristic of the spring can be changed by increasing or reducing the filling pressure of nitrogen, and the air charging and discharging fine adjustment is carried out according to the opening and closing speeds of the doors of different vehicles.

Optionally, two first guide rods are arranged corresponding to the test arms, threads are distributed at the similar ends, the first guide rods penetrate through the support plate and are in threaded connection with the support plate, and correspondingly, a driving piece for driving the first guide rods to rotate is arranged between the two first guide rods;

The guide mechanism further comprises;

the second guide rod is fixedly connected to one side of the test bench body, which is close to the first guide rod, and is horizontally arranged below the first guide rod and penetrates through the supporting plate.

By adopting the technical scheme, one first guide rod is arranged corresponding to each test arm, the two guide rods operate independently, then threads are formed on the side, close to the end, of the first guide rod, namely, the end, opposite to the end of the test arm, of the first guide rod, the support plate is in threaded connection with the first guide rod, and the support plate is simultaneously subjected to the linear guide action of the guide rods, so that the position of the support plate is adjusted through the rotation of the first guide rod, the position of the nitrogen spring is adjusted, and the adjustment of the minimum included angle of the test arm rod is realized; when the maximum clamping force test of the non-triggered anti-clamping protection before the clamping force sensor is installed is carried out, the support plates are required to be close to each other in opposite directions, namely the minimum included angle of the testing arm rod is reduced, and after the clamping force sensor is installed, the two support plates are reversely moved for protecting the clamping force sensor, so that the minimum included angle of the testing arm rod is increased, and the clamping force sensor is protected.

Optionally, further comprising;

The laser collimator is arranged at the top end of the test arm end, so that a tester can conveniently align the vehicle doors on two sides.

Through adopting above-mentioned technical scheme, before laser collimator is used for preventing pressing from both sides protection experiment, make things convenient for the alignment of test arm end and door, replace the manual alignment mode in traditional scheme, promote between test bench body to both sides door at the tester, open laser collimator and make laser aim at both sides door simultaneously, instruct when the clamp side of both sides door appears laser spot simultaneously and have aligned, can carry out follow-up test work, the laser alignment mode is applied to can save the time that the tester was repeatedly visual inspection in the above-mentioned scheme, improve the efficiency of clamp force test in the protection of preventing pressing from both sides. .

The application further provides a testing method for anti-pinch protection of a door of an urban subway vehicle, which comprises the following steps of:

the method comprises the following steps:

Starting a laser collimator, respectively aligning two test arm ends with two side car doors and placing the two test arm ends between the car doors, fixing a test table body, and preparing a test process;

The driving piece drives the first guide rod to rotate, the position of the supporting plate on the first guide rod is adjusted, and the maximum displacement distance of the test arm end under the extrusion of the vehicle door is firstly set through the nitrogen spring;

And testing and recording the internal pressurization value of the nitrogen spring for multiple times, comparing whether the pressurization value exceeds a standard pressure value, and if the pressurization value does not exceed the standard pressure value, installing a clamping force sensor and continuing testing.

Through the steps, the test of the anti-clamping protection clamping force of the metro vehicle is divided into two steps, in order to avoid damaging the clamping force sensor, the clamping conditions of the two side vehicle doors are tested under the condition that the clamping force sensor is not placed, the first guide rod is driven by the driving piece, the two support plates are displaced in opposite directions, the minimum included angle of the two test arm rods is reduced, the enough opposite displacement distance of the test arm ends is further ensured, the air connection port of the nitrogen spring is connected with the barometer, the two side vehicle doors are clamped, the guide blocks are not abutted with the nitrogen spring or abutted with the nitrogen spring, the nitrogen spring is compressed, the standard pressure is not reached after the pressure is applied, namely the maximum clamping force of the two side vehicle doors is in an installation state, the anti-clamping protection is used for enabling the two side vehicle doors to be opened again, the test arm ends are reset by test staff, the standard pressure is not exceeded each time, and whether the average value is in a safe range is observed.

Optionally, the method further comprises the following steps;

the driving piece continuously drives the first guide rod to rotate, drives the nitrogen spring to slide towards the test arm end for a preset distance, and the vehicle door is in butt joint with the test arm end and clamped;

The sliding abdication of the sliding block and the guiding of the first guide rod enable the test arm end to move linearly along with the pressing of the vehicle door against the test arm end;

The test arm end is close to the two-way measuring head which drives the test arm lever to rotate, the part of the test arm lever close to the hinge joint of the test table body clamps the clamping force sensor, and the clamping force value is recorded;

the driving piece continuously changes the position of the nitrogen spring so as to measure the clamping force of the vehicle door under different distance operation;

the lifting mechanism changes the height of the test arm end so as to measure the clamping force of the vehicle door under different height operation.

Through the steps, after the maximum clamping force under the anti-clamping protection is tested, the clamping force sensor is installed, the driving piece drives the two first guide rods to rotate, the distance between the two support plates is increased, the minimum included angle between the two test arm rods is increased, and therefore the clamping force sensor between the two test arm rods is protected; then gradually increasing the distance between the two support plates, namely gradually reducing the displacement of the two side doors in the closing direction, applying resistance when the two side doors move towards different distances in the closing direction, testing the clamping force test of anti-clamping protection under different distances, and simulating the anti-clamping protection operation capability of a collision passenger after the two side doors are closed to a certain distance; the height of the test arm end is repeatedly adjusted on the basis, and resistance is applied to the opposite sides of the two side doors at different heights, so that the situation of contact points between the body and the doors under different heights can be dealt with; after the height is changed, the distance between the supporting plates is changed, and the clamping force during anti-clamping protection triggering is tested under different distances when the vehicle door is closed at different heights; it should be noted that, the single change amount of the height during the test should be smaller than the length change amount of the closing direction of the vehicle door, the change amount of the height is less significant, and the test flow of the tester is increased.

In summary, the application has the following beneficial effects:

1. The simulation degree is higher, one side of the two test arm ends, which are respectively used for being abutted against the two side vehicle doors, is made of soft materials, so that when the vehicle doors clamp passengers on the emergency vehicle, the clamping force of the extruded buffer parts of the clothes and the body is fully restored, and the elasticity of the soft materials can enable part of the clamping force to be reduced, so that the test result is more fit with reality;

2. The test efficiency is improved, a test staff pushes the test bench body between the two side vehicle doors, a laser collimator replaces a repeated visual alignment mode of staff under the traditional scheme, and when laser points appear on the opposite sides of the vehicle doors on the two sides, the laser points are aligned; in addition, the increase of the test efficiency is also reflected in that the extreme displacement point of the guide block is changed by changing the position of the support plate, so that the resistance of the vehicle door is given when the vehicle door is closed for different lengths, and the maximum clamping force of the vehicle door under the subway triggering anti-clamping protection is tested; in addition, the height of the test arm end can be changed, so that resistance is given to different height points of the vehicle door, the clamping forces of the vehicle door at two sides at different heights can be repeatedly tested, and the maximum clamping forces of the vehicle door are ensured to be equal when passengers with different heights are extruded.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the present application in a free state.

Fig. 2 is a schematic view of the whole structure in a clamped state according to the embodiment of the present application.

Reference numerals illustrate: 1. a test bench body; 11. a screw groove; 12. a first servo motor; 13. a screw rod; 2. testing the bottom plate; 21. a first slider; 22. testing an arm lever; 221. a second slider; 23. a test arm end; 24. a clamp force sensor; 25. a laser collimator; 3. a first guide bar; 31. a second servo motor; 32. a support plate; 33. a nitrogen spring; 34. a second guide bar; 35. and a guide block.

Detailed Description

The application is described in further detail below with reference to fig. 1-2.

The embodiment of the application discloses a testing device for anti-pinch protection of an urban subway vehicle door. Referring to fig. 1, a testing device for anti-pinch protection of urban subway vehicle doors comprises a testing platform body 1, wherein the testing platform body 1 is used as a main body basic framework of the embodiment, a front end testing component is arranged on one side of the testing platform body 1, self-locking universal wheels are arranged at four corners of the bottom side of the testing platform body 1, so that a tester can push the testing platform conveniently, and whether the front end testing component is aligned with the vehicle doors is adjusted. During testing, a tester pushes the test bench body 1 to align the front end test assembly of the test bench body 1 with the vehicle doors on two sides, then the subway vehicle doors are clamped, after touching the front end test assembly and receiving resistance from the front end test assembly, the subway vehicle doors trigger anti-clamping protection to be opened again, the tester obtains the clamping force of the subway vehicle doors when triggering the anti-clamping protection through the process, a curve is drawn, whether the subway vehicle doors are in a safety value or not is confirmed, and drive a cart passengers are prevented from being injured by excessive clamping force of the subway vehicle doors.

Referring to fig. 1, a screw rod groove 11 is vertically formed in one side of a test bench body 1, two screw rods 13 which are vertically arranged are rotatably connected in each screw rod groove 11, a first servo motor 12 is vertically arranged above the test bench body 1 corresponding to each screw rod 13, and an output shaft of the first servo motor 12 penetrates through the top wall of the screw rod groove 11 and is fixedly connected with the screw rods 13; based on the above, the front end testing component is connected to the two screw rods 13 through threads, and the screw rods 13 are driven to rotate by the first servo motor 12, so that the height and the position of the front end testing component are adjusted.

Referring to fig. 1, the front end testing assembly includes a testing bottom plate 2 as a main supporting structure, the testing bottom plate 2 is vertically arranged, a first sliding block 21 is arranged on one side, close to the testing table body 1, of the testing bottom plate 2 corresponding to the screw rod groove 11, and the screw rod 13 penetrates through the first sliding block 21 and is in threaded connection with the first sliding block 21, so that the screw rod 13 rotates to drive the first sliding block 21 to slide in the screw rod groove 11, and meanwhile, the testing bottom plate 2 is driven to vertically reciprocate.

Referring to fig. 1 and 2, the front end testing assembly further includes two testing arm bars 22 hinged on the testing bottom plate 2, the testing arm bars 22 are disposed near the top side edge of the testing bottom plate 2, and the two testing arm bars 22 correspond to the two side doors respectively; a second sliding block 221 is connected to each test arm 22 in a sliding manner, and the second sliding block 221 can slide along the length direction of the test arm 22; the front end testing assembly further comprises a testing arm end 23 hinged to the second sliding block 221, the two testing arm ends 23 are respectively arranged corresponding to two side vehicle doors, one side, close to the second sliding block 221, of the two testing arm ends 23 extends a connecting rod towards the second sliding block 221, and one end, close to the second sliding block 221, of the connecting rod is hinged to the second sliding block 221; the two test arm ends 23 are used for abutting the two side doors, based on which, one end of the two test arm ends 23 far away from the second sliding block 221 is vertically provided with a column-shaped groove, and the column-shaped groove is arc-shaped, so that the abutting surface of the two side doors is enlarged.

The structure is a force transmission structure of the front end test assembly, when two vehicle doors are clamped, the opposite sides of the vehicle doors are abutted against the test arm ends 23, the two test arm ends 23 are moved in opposite directions, the test arm rod 22 is driven to rotate around a hinge point with the test bench body 1, meanwhile, the second sliding block 221 can slide along the test arm rod 22 to give way in the rotating process of the test arm rod 22, and then the test arm ends 23 are enabled to keep linear displacement in the rotating process of the test arm rod 22, so that the test arm ends 23 are always kept attached to the vehicle doors in the clamping process of the vehicle doors at two sides.

Referring to fig. 1 and 2, a clamping force sensor 24 is horizontally arranged between two test arm levers 22, two ends of the clamping force sensor 24 extend out of the two-way lateral heads, and respectively correspond to the two test arm levers 22, when the two test arm levers 22 are closed along with two side doors, the two-way lateral heads are abutted and clamped with the clamping force sensor 24, and then the data are transmitted to a display assembly of the console body by the clamping force sensor 24.

Referring to fig. 1 and 2, in order to maintain the forward direction of the sliding of the test arm end 23 along with the vehicle door, a guide mechanism is arranged at the bottom of the test arm end 23, and comprises two first guide rods 3 horizontally arranged at one side of the test bottom plate 2, fixing plates are arranged at two ends of the test bottom plate 2 corresponding to each first guide rod 3, the first guide rods 3 are rotationally connected with the fixing plates, the two first guide rods 3 are arranged corresponding to the two test arm ends 23, and each first guide rod 3 is horizontally arranged below each corresponding test arm end 23; the first guide rod 3 is connected with the guide block 35 in a sliding manner, the guide block 35 is fixedly connected with the bottom of the test arm end 23 through a connecting rod, so that the purpose that when the test arm end 23 is displaced, the guide block 35 is driven to slide on the first guide rod 3, the test arm end 23 slides forward synchronously, and the horizontal orientation of the first guide rod 3 is required to be parallel to a plane formed by two side vehicle doors.

In this embodiment, only one first guide rod 3 is disposed corresponding to each test arm end 23, and the first guide rods 3 and the guide blocks 35 only play a guiding role, in practical application, two first guide rods 3 may be horizontally disposed corresponding to each test arm end 23 along a direction away from the test bottom plate 2, so as to correspondingly expand the area of the fixing plate, and simultaneously connect the guide blocks 35 to the two first guide rods 3 in a penetrating and sliding manner.

Based on the guiding function of the guiding block 35 in the above process, a mechanism for limiting the sliding of the guiding block 35 can be arranged on the first guiding rod 3, so that the sliding limit of the testing arm end 23 is realized, namely, the two side doors cannot continuously move in opposite directions when being closed to a certain distance, the door is protected and reset by triggering the anti-pinch protection mechanism in different points in the opposite closing process of the door, and the clamping force in triggering is tested, therefore, a supporting piece is arranged on the guiding rod, the guiding block 35 is synchronously propped against the supporting piece after sliding for a certain distance at the testing arm end 23 in the clamping process of the two side doors, the limit of the received supporting piece cannot continuously slide in opposite directions, and the two side doors trigger the anti-pinch protection and reset.

Referring to fig. 1 and 2, the two first guide rods 3 are threaded at the proximal ends thereof, and are respectively penetrated by the portion provided with the threads and are connected with the vertically arranged support plates 32 by the threads, a second guide rod 34 is horizontally arranged below the two first guide rods 3, the second guide rods 34 are fixedly connected to the fixing plates on the two opposite sides of the test base plate 2, the second guide rods 34 are parallel to the first guide rods 3, and the two support plates 32 on the first guide rods 3 are simultaneously penetrated and slidingly connected to the second guide rods 34. In this embodiment, the second guide rod 34 plays a guiding role on the support plate 32, and the rotation of the first guide rod 3 slides through the threaded portion of the support plate 32 on the first guide rod 3, so as to realize the position adjustment of the support plate 32.

Referring to fig. 1 and 2, in order to implement rotation of the two first guide rods 3, second servomotors 31 are respectively disposed at opposite ends of the two first guide rods 3, the second servomotors 31 are fixedly connected to fixed plates at opposite ends of the first guide rods 3, and an output shaft of each second servomotor 31 penetrates through the fixed plates and is fixedly connected to an end portion of each first guide rod 3, so that position adjustment of the support plate 32 is implemented through rotation of each second servomotor 31.

Referring to fig. 1 and 2, a nitrogen spring 33 is horizontally arranged above the first guide rod 3 on one side of the support plate 32, which is close to the guide block 35, a cylinder body of the nitrogen spring 33 is fixedly connected with the support plate 32, the end part of a piston rod of the nitrogen spring 33 is a free end, the height of the end part of the piston rod of the nitrogen spring 33 is not more than the height of the top side of the guide block 35, when the guide block 35 slides along with the test arm end 23 for a certain distance, the piston rod of the nitrogen spring 33 is abutted to the piston rod of the nitrogen spring 33, the support of the piston rod of the nitrogen spring 33 cannot continue to slide, and meanwhile, the test arm end 23 cannot continue to move in opposite directions, so that the test arm 22 in a structural system cannot continue to rotate around a hinge point, and a clamping force sensor between the two test arm 22 can be protected while testing anti-clamping protection on different trigger points.

The embodiment of the application provides a testing device for anti-pinch protection of doors of urban subway vehicles, which comprises the following implementation principle:

The test bench is provided with a first servo motor 12 for driving a screw rod 13 to rotate so as to adjust the height of the test bottom plate 2, and then the height of the test arm end 23 is changed to test that the different heights give the blocking force to the vehicle door when the vehicle door is clamped, so that the clamping force when the anti-clamping protection is triggered.

The second servo motor 31 on the test bottom plate 2 drives the first guide rod 3 to rotate, the part, provided with threads, of the first guide rod 3 drives the support plate 32 to slide left and right, the position of the nitrogen spring 33 is adjusted, the maximum displacement of the test arm end 23 is adjusted, namely the maximum opposite sliding amount of the vehicle door, and when the vehicle door reaches the maximum closing amount, the vehicle door cannot be closed continuously due to the abutting of the test arm end 23, and the vehicle door triggers anti-pinch protection reset.

The main data source of the clamping force in this embodiment is a clamping force sensor, when the two side doors are closed to push the test arm 22 to rotate around the hinge point, the clamping force sensor 24 between the two test arm 22 is clamped, the two test arm 22 respectively abut against two test ends of the clamping force sensor 24, and then the test ends transmit the data to the display assembly of the test bench 1.

On the other hand, the embodiment provides a testing method based on the testing device for the anti-pinch protection of the urban subway vehicle door, and the testing method for the anti-pinch protection of the urban subway vehicle door comprises the following steps:

Firstly, a tester starts a laser collimator 25, aligns two test arm ends 23 with two vehicle doors respectively and places the two vehicle doors between the vehicle doors, fixes a test bench body 1, checks the internal pressure of a nitrogen spring 33, and prepares a test process;

The first servo motor 12 drives the screw rod 13 to rotate, and the height of the test bottom plate 2 is repeatedly adjusted until the test arm end 23 is positioned at the middle part of the vehicle doors at two sides;

The second servo motor 31 drives the first guide rod 3 to rotate, the position of the supporting plate 32 on the first guide rod 3 is adjusted, and the end part of the piston rod of the nitrogen spring 33 is placed at a proper position to be in a free state;

Starting a metro vehicle, closing a vehicle door, firstly testing the maximum displacement distance of the arm end 23 when triggering an anti-pinch protection mechanism, testing and recording the internal pressurization value of the nitrogen spring 33 for a plurality of times, comparing whether the standard pressure value is exceeded or not, and if the standard pressure value is not exceeded, installing the clamping force sensor 24 and continuing testing;

The second servo motor 31 continues to drive the first guide rod 3 to rotate, drives the nitrogen spring 33 to slide towards the test arm end 23 for a preset distance, the vehicle door operates, the test arm end 23 is abutted against and pressed, the sliding abdication of the sliding block and the guide of the first guide rod 3 enable the test arm end 23 to move linearly, the test arm end 23 is close to the first guide rod to drive the test arm rod 22 to rotate, the part, hinged with the test table body 1, of the test arm rod 22 is close to a bidirectional measuring head of the clamping force sensor 24, and the clamping force value is recorded;

The vehicle door receives resistance triggering anti-pinch protection, repeatedly tests for a plurality of times, and records and draws a curve;

The second servo motor 31 continues to drive the first guide rod 3 to rotate, the nitrogen spring 33 is sequentially moved towards the vehicle doors at the two sides to approach a preset distance, the above process is repeatedly repeated, and a curve is recorded and drawn;

Finally, the first servo motor 12 drives the screw rod 13 to rotate, the height of the test base plate 2 is adjusted, and the process is repeated, so that a clamping force change curve at different heights is obtained.

The test method of the test device for the anti-pinch protection of the urban subway vehicle door provided by the embodiment is based on the following principle:

in the test process, a tester needs to observe a display assembly on the test bench body 1, a two-dimensional plane taking the displacement distance of the vehicle door as a horizontal axis and the value of the clamping force as a vertical axis is displayed on the display assembly, and the compression value of the clamping force sensor along with the displacement distance of the vehicle door is displayed in the two-dimensional plane.

The data acquisition in the test process is required to be comprehensive, the maximum clamping force when the door is repeatedly tested for multiple times under the same height and the same door displacement distance to trigger anti-clamping protection, and the qualification standard is that the multiple times of maximum clamping force is below the maximum value, and the multiple times of test and the average value are all within a safety range.

And then changing the height, changing the displacement distance of the vehicle door and repeating the test.

In this embodiment, the displacement distance of the door is the displacement distance when the door resistance is applied to trigger the anti-pinch protection by the test arm end 23 after the position of the nitrogen spring 33 is changed.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (8)

1. A testing arrangement for urban subway vehicle door anti-pinch protection, includes as main part supporting framework's test bench body (1), its characterized in that: also comprises;

The two opposite ends of the two test arms are hinged to the test bench body (1), and the opposite ends are used for abutting against the two side doors and closing the two test arms along with the doors to rotate in opposite directions;

The clamping force sensor (24) is arranged at the part of the test bench body (1) corresponding to the space between the two test arms, the two-way measuring heads of the clamping force sensor are respectively abutted against the two test arms, and the two test arms oppositely rotate at the two sides to clamp the two-way measuring heads so as to transmit pressure;

The guide mechanism is arranged at one side of the test table body (1) and connected with the two test arms, and guides the forward displacement of the two test arms when rotating;

The lifting mechanism is arranged on the test table body (1), is connected with the test arm and is used for adjusting the height of the test arm.

2. The testing device for anti-pinch protection of doors of urban subway vehicles according to claim 1, wherein: the test arm includes;

The test arm ends (23) are arranged on the opposite sides of the two test arms and are made of soft materials and used for abutting against the vehicle doors on the two sides;

one end of the test arm lever (22) is hinged with the test table body (1), and the other end of the test arm lever (22) is connected with a sliding block in a sliding manner along the length direction of the test arm lever;

the test arm end (23) is hinged with a sliding block on the test arm rod (22).

3. The testing device for anti-pinch protection of doors of urban subway vehicles according to claim 1, wherein: the guide mechanism comprises;

the first guide rod (3) is arranged on the test bench body (1) and horizontally arranged below the two test arms, and a guide block (35) fixedly connected to the end (23) of the test arm is connected to the first guide rod in a sliding manner;

the support piece is slidably connected to the first guide rod (3), and one end of the support rod is fixedly connected with the guide block (35).

4. A testing device for anti-pinch protection of urban subway vehicle doors according to claim 3, characterized in that: the support includes;

the nitrogen spring (33) is horizontally arranged above the first guide rod (3), and the end part of the piston rod of the nitrogen spring is in abutting connection with the guide block (35);

And a support plate (32) which is provided on the first guide rod (3) and is fixedly connected to the cylinder end of the nitrogen spring (33).

5. A testing device for anti-pinch protection of urban subway vehicle doors according to claim 3, characterized in that: two first guide rods (3) are arranged corresponding to the test arms, threads are distributed at the similar ends of the two first guide rods, the first guide rods (3) penetrate through the support plates (32) and are in threaded connection with the support plates, and correspondingly, driving pieces for driving the first guide rods (3) to rotate are arranged between the two first guide rods (3);

The guide mechanism further comprises;

the second guide rod (34) is fixedly connected to one side, close to the first guide rod (3), of the test table body (1), and is horizontally arranged below the first guide rod (3) and penetrates through the supporting plate (32).

6. The testing device for anti-pinch protection of doors of urban subway vehicles according to claim 1, wherein: also comprises;

and the laser collimator (25) is arranged at the top end of the test arm end (23) so as to facilitate the alignment of the two side doors by a tester.

7. The test method for anti-pinch protection of doors of urban subway vehicles according to claim 1, comprising the following steps:

starting a laser collimator (25), aligning two test arm ends (23) with two side car doors respectively and placing the two side car doors between the car doors, fixing a test table body (1), and preparing a test process;

The driving piece drives the first guide rod (3) to rotate, the position of the supporting plate (32) on the first guide rod (3) is adjusted, and the maximum displacement distance of the test arm end (23) under the extrusion of the vehicle door is firstly set through the nitrogen spring (33);

And testing and recording the internal pressurization value of the nitrogen spring (33) for multiple times, comparing whether the standard pressure value is exceeded or not, and if the standard pressure value is not exceeded, installing the clamping force sensor (24) and continuing to test.

8. The test method for anti-pinch protection of urban subway vehicle doors according to claim 1, further comprising the steps of;

The driving piece continuously drives the first guide rod (3) to rotate, drives the nitrogen spring (33) to slide towards the test arm end (23) for a preset distance, and the vehicle door is in butt joint with the test arm end (23) and clamped;

the sliding abdication of the sliding block and the guiding of the first guide rod (3) enable the test arm end (23) to move linearly along with the pressing of the vehicle door against the test arm end (23);

the test arm end (23) is close to the bidirectional measuring head to drive the test arm lever (22) to rotate, the test arm lever (22) is close to the part hinged with the test table body (1) to clamp the clamping force sensor (24), and the clamping force value is recorded;

the driving piece continuously changes the position of the nitrogen spring (33) so as to measure the clamping force of the vehicle door under different distance operation;

the lifting mechanism changes the height of the test arm end (23) so as to measure the clamping force of the vehicle door under different height operation.