CN204286834U - A kind of subway shield door load testing machine - Google Patents

Abstract

The utility model discloses a loading test device for a subway screen door, which comprises a bench main body for driving the screen door, a height-adjustable installation base, a test bench and a pneumatic cabinet, and the bench main body is arranged on the installation base Above, the pneumatic cabinet is installed on the main body of the bench, and a screen door to be tested is vertically placed between the main body of the bench and the test bench, and the bottom of the screen door is clamped in the channel steel, and the channel steel, The bottom of the installation base is fixed on the civil construction of the platform. The loading test device of the subway screen door of the utility model is light in weight, convenient and quick to move, high in simulation degree, safe and reliable in connection, simple in operation and control, and meets the requirements of full-height screen doors and half-height safety doors. Loading test, strong versatility, has good application prospects.

Description

A loading test device for subway screen door

technical field

The utility model relates to the technical field of urban rail transit, in particular to a loading test device for a subway screen door.

Background technique

With the rapid development of urban rail transit, the demand for the subway is increasing year by year. The subway screen door is a key component of the subway. Before it is installed in the subway, it needs to be tested. The existing subway screen door loading test device uses carbon The square tube triangular welding structure of steel material is the main body of the bench, and the upper, middle and lower square tube plane frames are welded again. A template with a certain thickness is connected in front of the plane frame to form the entire loading plane. The middle loading plane is pushed by the cylinder and the two sides The guide realizes forward and backward movement, the airbag is suspended between the loading plane and the screen door, and the pressure in the airbag is adjusted to control the load acting on the screen door, and finally achieve the simulated underground piston wind pressure and passenger extrusion force during the use of the screen door. As well as the state of the superposition of the two on the screen door, the test bench is also welded by steel pipes, and displacement sensors are installed at specific positions to detect the deformation of each department of the screen door in this state. The existing subway screen door The loading test device has the following disadvantages,

(1) The main body of the test bench and the test bench are all steel welded structures, and the overall weight is very large. Forklifts must be used to move and adjust the distance between them and the screen door, which is very inconvenient to carry;

(2) The guides on both sides adopt the sliding friction guide method of nylon plates, and the friction coefficient is high after entering water or wet, which weakens the load on the screen door and cannot fully simulate the extrusion force of passengers, which affects the test results;

(3) After the wooden board used for the loading plane is used for a long time, there will be burrs on the edge of the wooden board, which is easy to poke the airbag;

(4) The electrical components and air pipes used for airbag inflation and cylinder control are all connected and assembled during use, and cannot be integrated together. The operation is very messy and error-prone;

(5) When testing full-height screen doors and half-height screen doors, it is necessary to disassemble and convert the upper loading plane and the lower loading plane, which has poor versatility and is time-consuming and laborious.

Utility model content

The technical problem solved by the utility model is the shortcoming existing in the subway screen door loading test device in the prior art. The loading test device for subway screen doors of the utility model has the advantages of light weight, convenient and quick movement, high degree of simulation, safe and reliable connection, simple operation and control, strong versatility, and good application prospects.

In order to achieve the above object, the technical solution adopted in the utility model is:

A loading test device for a subway shielded door, characterized in that it includes a bench body for driving a shielded door, a height-adjustable installation base, a test bench and a pneumatic cabinet, and the bench body is arranged on the installation base , the pneumatic cabinet is installed on the main body of the bench, a screen door to be tested is vertically placed between the main body of the bench and the test bench, the bottom of the screen door is clamped in the channel steel, the channel steel, the installation The bottom of the base is fixed on the platform construction,

The main body of the platform includes a honeycomb support frame spliced from top to bottom by several rectangular frames. One side of the honeycomb support frame is provided with supporting pieces supporting two pieces of right-angled triangles. Fitted with the honeycomb support frame, the right-angled side of each support piece in the horizontal direction is fixed on the installation base, and a push plate assembly is arranged between the two support pieces, and the push plate assembly includes a push plate and a push rod. Both sides of the rod are provided with bearing wheels, and each bearing wheel is embedded in the guide rail on the opposite support piece, and the push plate is also connected with the drive shaft of the cylinder assembly through the push rod, and the push plate is driven by the cylinder assembly. , extending out of the honeycomb support frame;

The installation base includes two upper and lower frames distributed up and down, the upper frame is fixedly connected to the right-angled side of the support piece in the horizontal direction through T-shaped nuts, and the four corners between the upper frame and the lower frame A height-adjustable support column is provided. The four corners of the lower frame are provided with eccentric universal brake rollers. The lower frame on one side of the eccentric universal brake rollers is also provided with a horizontal adjustment seat. The eccentric universal brake rollers 1. There is also a conversion support seat on the lower frame between the horizontal adjustment seats;

The test bench includes two right-angled triangle-shaped side frames, the right-angled sides of the two side frames in the vertical direction are fixed on the support frame, the support frame is parallel to the honeycomb support frame, and the support frame is distributed from top to bottom The crosspiece is composed of a crosspiece, the crosspiece in the middle is fixedly connected to the auxiliary crosspiece perpendicular to the crosspiece through the connecting plate, and multiple sets of displacement sensors are installed on the auxiliary crosspiece;

The other side of the honeycomb support frame is provided with several groups of airbags arranged in sequence from top to bottom, one side of the screen door to be tested is attached to the front surface of the airbag, and the other side of the screen door to be tested is connected to the auxiliary airbag. The rungs fit together;

The pneumatic cabinet is installed between two supporting pieces and is located below the cylinder assembly, including a pneumatic cabinet box, on which a pneumatic cabinet panel is clipped, and a pressure ring is fixed inside the pneumatic cabinet box. The pressure gauge shows that in the panel of the pneumatic cabinet, a through-stop valve is fixed in the pneumatic cabinet box through a switch bracket, and a filter pressure reducing valve is fixed in the pneumatic cabinet box through a filter pressure reducing valve bracket. There are multiple check valves, one of which is connected to the air source, and the rest of the check valves are respectively connected to the cylinder assembly and each air bag to provide a power source, and the filter decompression valve is used to adjust the power air pressure.

The aforementioned loading test device for a subway screen door is characterized in that: the two support sheets are respectively provided with a left turning roller assembly, a right turning roller assembly, a left turning roller assembly, and a right turning roller assembly on the lower side of the side close to the honeycomb support frame. The overturning roller assembly is connected to the lower side of the support piece through a hinge assembly, and the eccentric universal brake roller is installed on the corresponding left and right overturning roller assemblies at the bottom.

The aforementioned loading test device for a subway screen door is characterized in that: the rectangular frame, the upper frame, and the lower frame are all spliced by aluminum alloy square pipes, and there are T-shaped grooves on the four sides for easy connection.

The aforementioned loading test device for a subway screen door is characterized in that: the rungs and auxiliary rungs are made of aluminum alloy square tubes.

The aforementioned loading test device for a subway screen door is characterized in that: the conversion support base is provided with expansion screw fixing holes.

The beneficial effects of the utility model are: the loading test device of the subway screen door of the utility model is light in weight, convenient and quick to move, high in simulation degree, safe and reliable in connection, simple in operation and control, strong in versatility, and has the following advantages,

(1) The frame structure of the main body of the bench, the installation base, and the test bench is assembled by splicing aluminum alloy square pipes. The four sides of these pipes have T-shaped groove structures, which are assembled and connected to form a safe and reliable frame Structure, this structure and material not only ensures the safety and reliability of the system, but also reduces the overall weight, realizes portability and detachability, and saves the cost of forklift use;

(2) The detachable performance of the main body of the bench has been enhanced. When conducting full-height and half-height screen door tests, only the height of the installation base needs to be adjusted, which has strong practicability and improves work efficiency;

(3) Between the main body of the bench and the conversion support, level adjustment seat and rollers at the bottom of the installation base, the mutual conversion between the conversion support seat and the eccentric universal brake roller can be realized only by lifting the level adjustment seat during use. It not only realizes the fixing function of the main body of the bench and the ground, but also solves the problem that the main body of the bench needs to use a forklift during the transportation process, and is convenient to move;

(4) There is an overturning roller assembly at the bottom of the main body of the gantry. Through the overturning function of the hinge assembly, it can not only avoid interference with the main body of the gantry, but also prevent the main body of the gantry from moving with the eccentric universal brake roller at the front. , leaning forward, easy to operate, safe and reliable;

(5) Compared with the guide way of sliding friction of nylon plate used in the push plate guide rail of the traditional test device, the guide way of pulley rolling friction is adopted, which reduces friction and energy consumption;

(6) The honeycomb support frame is small in weight, low in cost, and can withstand large longitudinal loads to meet the test requirements;

(7) Compared with the cumbersome control steps of the traditional test device, the control part is integrated in a pneumatic cabinet. The pressure gauge, filter pressure reducing valve, and stop valve are clear at a glance. The operation is simple, beautiful and reduces the chance of error.

Description of drawings

Fig. 1 is a structural schematic diagram of the application of the lifting mechanism capable of automatically maintaining a horizontal state of the present invention on a full-height shielded door.

Fig. 2 is a schematic structural view of the stand main body of the present invention.

Fig. 3 is a side view of A-A of Fig. 2 .

Fig. 4 is a schematic structural view of the push plate assembly of the present invention.

Fig. 5 is a structural schematic diagram of the installation base of the present invention.

Fig. 6 is an enlarged view of the installation place of the eccentric universal brake roller of the present invention.

Fig. 7 is a schematic structural view of the left and right turning roller assemblies of the present invention.

Fig. 8 is a schematic structural view of the test bench of the present invention.

Fig. 9 is a side view of the test stand of the present invention.

Fig. 10 is a schematic structural view of the pneumatic cabinet of the present invention.

Fig. 11 is a side view of the pneumatic cabinet of the present utility model.

Fig. 12 is a structural schematic diagram of the application of the lifting mechanism capable of automatically maintaining a horizontal state of the present invention on a half-height safety door.

The meanings of the marks in the accompanying drawings are as follows:

1: Bench main body; 2: Height-adjustable installation base; 3: Test bench; 4: Pneumatic cabinet; 5: Channel steel; 6: Platform civil construction; 7: Rectangular frame; 8: Honeycomb support frame; 9: Support piece; 10: Push plate assembly; 101: Push plate; 102: Push rod; 103: Loading wheel; 11: Guide rail; 12: Cylinder assembly; 13: Upper frame; 14: Lower frame; 15: Support column; 16: T-shaped nut; 17: eccentric universal brake roller; 18: horizontal adjustment seat; 19: conversion support seat; 20: side frame; 21: support frame; 22: crosspiece; 23: connecting plate; 24: auxiliary crosspiece; 25: displacement sensor; 26: pneumatic cabinet box; 27: collar; 28: pressure gauge; 29: switch bracket; 30: stop valve; 31: filter pressure reducing valve bracket; 32: filter pressure reducing valve; 33: air bag ; 34: left turning roller assembly; 35: right turning roller assembly; 36: hinge assembly; 37: full-height screen door prototype; 38: half-height security door prototype.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings of the description.

As shown in Figure 1, a loading test device for a subway screen door includes a bench main body 1 for driving a screen door, a height-adjustable installation base 2, a test bench 3 and a pneumatic cabinet 4, and the bench main body 1 is set On the installation base 2, the pneumatic cabinet 4 is installed on the bench main body 1, and a screen door to be tested is vertically placed between the bench body 1 and the test bench 3, and the bottom of the screen door is clamped in the channel steel 5 , the channel steel 5 and the bottom of the installation base 2 are fixed on the platform civil construction 6,

As shown in Fig. 2, Fig. 3 and Fig. 4, the stand main body 1 includes a honeycomb support frame 8 spliced from top to bottom by several rectangular frames 7, the honeycomb support frame 8 has small weight, low cost, and can withstand heavy The large longitudinal load meets the test requirements. One side of the honeycomb support frame 8 is provided with support pieces 9 supporting two right-angled triangles. 9 The right-angled side in the horizontal direction is fixed on the installation base 2, and a push plate assembly 10 is arranged between the two supporting pieces 9. Wheels 103, each bearing wheel 103 is all embedded in the guide rail 11 on the support piece 9 on the opposite side, and the push plate 101 is also connected with the drive shaft of the cylinder assembly 12 through the push rod 102, and the push plate 101 is driven by the cylinder assembly 12. Extending the honeycomb support frame 8, compared with the guide way of sliding friction of the nylon plate adopted by the push plate guide rail of the traditional test device, the guide way of pulley rolling friction is adopted, which reduces friction and energy consumption.

As shown in Fig. 5 and Fig. 6, the installation base 2 includes two upper and lower frames 13 and 14 distributed up and down, and the upper frame 13 is fixedly connected to the right-angled side of the support piece 9 in the horizontal direction through a T-shaped nut 16. The four corners between upper frame 13 and lower frame 14 are provided with height-adjustable support columns 15, the four corners of lower frame 14 are provided with eccentric universal brake rollers 17, and the lower frame 14 on one side of eccentric universal brake rollers 17 is also provided with There is a horizontal adjustment seat 18, an eccentric universal brake roller 17, and a conversion support seat 19 is arranged on the lower frame 14 between the horizontal adjustment seat 18. The conversion support seat 19 is provided with an expansion screw fixing hole. The horizontal adjustment seat 18 can realize the mutual conversion of the functions of the conversion support seat 19 and the eccentric universal brake roller 17, which not only realizes the function of fixing the main body of the bench to the ground, but also solves the problem that the main body of the bench needs to be transported by a forklift , easy to move.

As shown in Figure 7, the two support sheets 9 are respectively provided with a left turning roller assembly 34, a right turning roller assembly 35, a left turning roller assembly 34, and a right turning roller assembly 35 on the lower side near the honeycomb support frame 8 side. Component 36 is connected to the side below the support piece 9, and the eccentric universal brake roller 17 is installed on the bottom of the corresponding left flip roller assembly 34 and right flip roller assembly 35. Interference occurs, and it can prevent the main body 1 of the stand from tilting forward when the eccentric universal brake roller 17 at the front is used to move, and the operation is simple, fast, safe and reliable;

As shown in Figures 8 and 9, the test bench 3 comprises two right-angled triangle-shaped side frames 20, and the right-angled sides of the two side frames 20 in the vertical direction are fixed on the support frame 21, and the support frame 21 is parallel to the honeycomb support frame 8. , the support frame 21 is formed from top-to-bottom crosspieces 22, the middle crosspiece 22 is fixedly connected to the auxiliary crosspiece 24 perpendicular to the crosspiece 22 through the connecting plate 23, and multiple sets of displacement sensors 25 are installed on the auxiliary crosspiece 24 ;

The other side of the honeycomb support frame 8 is provided with several groups of airbags 33 arranged sequentially from top to bottom, one side of the shielded door to be tested is attached to the front surface of the airbag 33, and the other side of the shielded door to be tested is in contact with the front surface of the airbag 33. Auxiliary rungs 24 fit together;

As shown in Figure 10 and Figure 11, the pneumatic cabinet 4 is installed between the two supporting pieces 9, and is located below the cylinder assembly 12, including the pneumatic cabinet box 26, the pneumatic cabinet box 26 is clamped with the pneumatic cabinet panel, the pneumatic cabinet A pressure gauge 28 is fixed inside the box 26 through a collar 27, and the pressure gauge 28 is displayed on the panel of the pneumatic cabinet. An on-off valve 30 is fixed inside the pneumatic cabinet box 26 through a switch bracket 29. The filter pressure reducing valve bracket is also passed inside the pneumatic cabinet box 26. 31 is fixed with a filter decompression valve 32, and there are multiple check valves 30, one of which is connected to the air source, and the rest of the check valves are respectively connected to the cylinder assembly 12 and each air bag 33 to provide a power source. The pressure valve 32 is used to adjust the power air pressure. Compared with the cumbersome control steps of the traditional test device, the control part is now integrated in a pneumatic cabinet. The pressure gauge, filter pressure reducing valve, and stop valve are clear at a glance. The operation is simple and beautiful. Reduced chance of error.

The rectangular frame 7, the upper frame 13, and the lower frame 14 of the utility model are all spliced by aluminum alloy square pipes, and there are T-shaped grooves for easy connection on the four sides, and the crosspiece 22 and auxiliary crosspiece 24 are controlled by aluminum alloy square pipes. The four sides of this type of pipe have T-shaped groove structures, which are assembled and connected to form a safe and reliable frame structure. This structure and material not only ensures the safety and reliability of the system, but also reduces the overall weight. Portability and detachability save the cost of forklift use.

The utility model enhances the detachable performance of the main body of the stand, and only needs to adjust the height of the installation base 2 when carrying out the test of a full-height screen door or a half-height safety door, which has strong practicability and improves work efficiency, as shown in Figure 1 The full-height screen door test diagram is shown, and the working process is as follows. The verification content is that the screen door body will not undergo permanent deformation under the superimposed load of passenger extrusion force and underground station piston wind pressure, and the maximum at the measurement point The amount of deformation is not greater than the specified value,

During installation, the bottom of the stand main body 1 is installed on the installation base 2, and the eccentric universal brake roller 17 at the bottom of the installation base 2 pushes the whole stand main body 1 to move to the platform side of the screen door prototype 37. , the bottom of the screen door prototype 37 is clamped in the channel steel 5, the bottom of the channel steel 5 and the installation base 2 are fixed on the platform civil construction 6, and a certain distance is kept from the screen door prototype 36 to ensure that when the airbag 33 is filled to the specified air pressure, The airbag between the platform main body 1 and the screen door prototype 37 has extrusion deformation. At this time, by installing the horizontal adjustment seat 18 at the bottom of the base 2, the entire stand main body 1 is raised, the eccentric universal brake roller 17 at the bottom is lifted off the ground, and the conversion support seat 19 at the bottom of the installation base 2 is lowered until it is in contact with the ground. Complete contact, use expansion bolts to connect it firmly with the platform civil engineering 6, place the test bench 3 on the track side of the screen door prototype 37, install a displacement sensor on it, and adjust the auxiliary crosspiece 24 to make the measuring needle of the displacement sensor reach the On each specified measuring point on the screen door prototype 37, the utility model adopts the position where five airbags 33 are suspended, as shown in Figure 1, the upper part of the pneumatic cabinet 4 is connected to the cylinder assembly 12 by the check valve, and the console frame main body 1 The movement of the upper push rod assembly 4 is connected to five air bags 33 hanging on one side of the honeycomb support frame 8 and the screen door prototype 36 through other check valves to control the pressure in the air bags 33 respectively, and the number of filter pressure relief valves is The number of pressure gauges is corresponding, all of which are 3, and corresponding.

Piston wind pressure simulation test in underground station: the air source is connected to one stop valve of the pneumatic cabinet 4 and opened, and the other stop valves are opened in turn, and one of the filter pressure reducing valves is adjusted so that the reading of the corresponding pressure gauge is the piston wind pressure of the underground station. value, after the adjustment, close the check valve, repeat the above steps, and adjust the next check valve, so that the pressure in the five airbags 33 is all the piston wind pressure value of the underground station, and finally open the adjusted check valve, Adjust the filter pressure reducing valve so that the reading of the pressure gauge is the air pressure value of the piston in the underground station to maintain the pressure of the air bag 33;

Passenger extrusion force simulation test: while maintaining the underground station piston wind pressure simulation test, open other check valves connected to the cylinder assembly 12, adjust the remaining filter pressure reducing valves, so that the corresponding pressure gauge reads passenger extrusion The pressure transformed by the force and the reading of another pressure gauge are the pressure transformed by the extrusion force of the passenger, and the cylinder assembly 12 pushes the push plate assembly 10 against the screen door prototype 37 .

The two superimposed loads act on the shielded door prototype 37 after a certain period of time, unload the airbag 33, reset the cylinder assembly 12, reset the displacement sensor, repeat the above experimental steps once, record the readings of each displacement sensor, and fill in the measured displacement , compared with the experimental requirements, and draw the experimental conclusions.

Figure 12 shows the half-height screen door test diagram. The working process is as follows to verify that the half-height safety door will not undergo permanent deformation under the superimposed load of passenger extrusion force + underground station piston wind pressure, and the deformation amount is not greater than exceeds the specified value,

During installation, move the loading platform to the platform side of the half-height safety door prototype 38, keep a certain distance from the half-height safety door prototype 38, and ensure that when the airbag 33 is filled to the specified air pressure, between the loading platform main body 1 and the half-height safety door prototype 38 The airbag has extrusion deformation. Now, unscrew the horizontal adjustment seat 18 at the bottom of the platform main body 1, so that the whole loading platform main body 1 is raised, the eccentric universal brake roller 17 at the bottom is lifted off the ground, and the conversion support seat 19 at the bottom of the platform main body 1 is lowered until it is aligned with the The platform civil construction 6 is in full contact with the platform civil construction 6 using expansion bolts. The test bench 3 is placed on the track side of the half-height safety door prototype 38, and a displacement sensor is installed on it. By adjusting the auxiliary crosspiece 24, the displacement sensor The stylus arrives at each specified measuring point on the half-height safety door prototype 38. Since the height of the half-height safety door prototype 38 is low, it is enough to adopt three airbags 33 to hang at the position shown in Figure 11. The upper part of the pneumatic cabinet 4 is connected The stop valves are respectively connected to the cylinder assembly 12 to control the movement of the push rod assembly 10 on the main body 1 of the console, and the remaining stop valves are selected to be connected to three airbags 33 in three ways to control the pressure in the airbags 33 respectively.

Piston wind pressure simulation test in underground station: the air source is connected to one stop valve of the pneumatic cabinet 4 and opened, and the other stop valves are opened in turn, and one of the filter pressure reducing valves is adjusted so that the reading of the corresponding pressure gauge is the piston wind pressure of the underground station. value, after the adjustment, close the check valve, repeat the above steps, and adjust the next check valve, so that the pressure in the three airbags 33 is all the piston wind pressure value of the underground station, and finally open the adjusted check valve, Adjust the filter pressure reducing valve so that the reading of the pressure gauge is the air pressure value of the piston in the underground station to maintain the pressure of the air bag 33;

Passenger extrusion force simulation test: while maintaining the underground station piston wind pressure simulation test, open other check valves connected to the cylinder assembly 12, adjust the remaining filter pressure reducing valves, so that the corresponding pressure gauge reads passenger extrusion The pressure transformed by the force and the reading of another pressure gauge are the pressure transformed by the passenger's extrusion force, and the cylinder assembly 12 pushes the push plate assembly 10 against the screen door prototype 38 .

After the two superimposed loads act on the half-height safety door prototype 38 for a certain period of time, it is unloaded, the air bag 35 is deflated, the cylinder is reset, and the displacement sensor is cleared. Repeat the above experimental steps once, record the readings of each displacement sensor, fill in the measured displacement, compare with the experimental requirements, and draw the experimental conclusion.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (5)

1. A subway screen door loading test device, characterized in that: it includes a bench body (1) for driving the screen door, a height-adjustable installation base (2), a test bench (3) and a pneumatic cabinet ( 4), the bench main body (1) is set on the installation base (2), the pneumatic cabinet (4) is installed on the bench main body (1), the bench main body (1), the test bench ( 3) There is a vertically placed screen door to be tested, and the bottom of the screen door is clamped in the channel steel (5), and the bottom of the channel steel (5) and the installation base (2) are fixed on the platform civil engineering ( 6) on, The main body (1) of the platform includes a honeycomb support frame (8) spliced from top to bottom by several rectangular frames (7). One side of the honeycomb support frame (8) is provided with two pieces of right triangle the supporting pieces (9), the right-angled sides of each supporting piece (9) in the vertical direction are attached to the honeycomb supporting frame (8), and the right-angled sides of each supporting piece (9) in the horizontal direction are fixed on the installation base (2), A push plate assembly (10) is provided between the two supporting pieces (9), and the push plate assembly (10) includes a push plate (101) and a push rod (102). Both sides of the push rod (102) are provided with There are bearing wheels (103), and each bearing wheel (103) is embedded in the guide rail (11) on the support piece (9) on the opposite side, and the push plate (101) is also connected with the cylinder assembly (12) through the push rod (102) ), the push plate (101) extends out of the honeycomb support frame (8) under the drive of the cylinder assembly (12); The installation base (2) includes two upper and lower frames (13) and lower frames (14), and the upper frame (13) is horizontal to the supporting piece (9) through T-shaped nuts (16) The four corners between the upper frame (13) and the lower frame (14) are provided with height-adjustable support columns (15), and the four corners of the lower frame (14) are provided with eccentric universal The brake roller (17), the lower frame (14) on the side of the eccentric universal brake roller (17) is also provided with a horizontal adjustment seat (18), the eccentric universal brake roller (17), the horizontal adjustment seat ( 18) There is also a conversion support seat (19) on the lower frame (14) between them; The test bench (3) includes two right-angled triangle-shaped side frames (20), the right-angled sides of the two side frames (20) in the vertical direction are fixed on the support frame (21), and the support frame (21) is parallel to With the honeycomb support frame (8), the support frame (21) is composed of crosspieces (22) distributed from top to bottom, and the crosspieces (22) in the middle are fixedly connected to the crosspieces ( 22) the auxiliary crosspiece (24), where multiple sets of displacement sensors (25) are installed on the auxiliary crosspiece (24); The other side of the honeycomb support frame (8) is provided with several groups of airbags (33) arranged in sequence from top to bottom, and one side of the screen door to be tested is attached to the front surface of the airbag (33), and the airbag (33) to be tested The other side of the screen door fits with the auxiliary crosspiece (24); The pneumatic cabinet (4) is installed between two supporting pieces (9), and is located below the cylinder assembly (12), including a pneumatic cabinet box (26), and a pneumatic The cabinet panel, the pressure gauge (28) is fixed in the pneumatic cabinet box (26) through the collar (27), the pressure gauge (28) shows the inside of the pneumatic cabinet panel, and the switch in the pneumatic cabinet box (26) The bracket (29) is fixed with a stop valve (30), and the filter pressure relief valve (32) is also fixed in the pneumatic cabinet box (26) through the filter pressure relief valve bracket (31). The stop valve (30) There are multiple ones, one of the on-off valves is connected to the air source, and the rest of the on-off valves are respectively connected to the cylinder assembly (12) and each air bag (33) to provide a power source. The filter pressure reducing valve (32) is used for Adjust power air pressure. 2. A subway screen door loading test device according to claim 1, characterized in that: the two support pieces (9) are respectively provided with left turning rollers on the lower side of the side close to the honeycomb support frame (8) Assembly (34), right flip roller assembly (35), left flip roller assembly (34), right flip roller assembly (35) is connected to the side below the support piece (9) through a hinge assembly (36), and the eccentric universal brake Roller (17) is installed in the corresponding left overturning roller assembly (34), the bottom of right overturning roller assembly (35). 3. A subway screen door loading test device according to claim 1, characterized in that: the rectangular frame (7), the upper frame (13), and the lower frame (14) are all spliced by aluminum alloy square pipes , There are T-slots on all four sides for easy connection. 4. A loading test device for a subway screen door according to claim 1, characterized in that: said rungs (22) and auxiliary rungs (24) are made of aluminum alloy square tubes. 5. A loading test device for a subway screen door according to claim 1, characterized in that: the conversion support seat (19) is provided with expansion screw fixing holes.