A method for detecting the position and size of the double-opening plug sliding door of a train unit

Abstract

The present invention relates to a method for detecting the position and size of a double-leaf plug sliding door of a train set, comprising the following steps: detecting the position of the upper middle seam; detecting the position of the upper left and right sides of the line; detecting the position of the left and right sides of the vertical bars; detecting the position of the lower left and right sides of the corners; detecting the position of the lower middle seam. The method for detecting the position and size of the double-leaf plug sliding door of a train set of the present invention can quickly solve the overall error change, the size is within a controllable range, and the air tightness test is ensured to pass smoothly, improve production efficiency, make the adjustment controllable and standardized, and can be used to quickly train learning personnel; it can quickly solve the problem of poor sealing of various parts of the double-leaf plug sliding door, fundamentally clarify the detection method, integrate the beauty of craftsmanship and manufacturing into production, achieve consistency in production process and results, thereby improving the ability to handle the air leakage points of the plug sliding door during the air tightness test, so that the air tightness test can be passed smoothly, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of assembly and debugging of electric train sets, and in particular to a method for detecting the position and size of a double-opening plug door of an electric train set. Background Art

[0002] The so-called plug door means that the door has a plug-in action during the entire opening and closing process, and the outside of the door is flush with the outer skin of the car body when the door is closed, and overlaps with the car body when the door is opened. Most high-speed trains use an electric pneumatic plug door, but a small number of fast passenger trains use manual plug doors. Compared with folding doors, plug doors have the following advantages: good airtightness, no space in the car, safe and reliable locking mechanism, passengers can escape from the scene when an accident occurs in the car, and it also has an anti-pinch function.

[0003] The double-leaf plug door uses a drive motor to open and close the door. It detects the size of the door closing force to determine whether there is an obstacle. Therefore, when the two doors do not cooperate well, the large closing force will trigger the anti-extrusion function, and the door leaf cannot be locked. The adjustment size of the left and right doors of the double-leaf plug door has a great influence on each other. If the cooperation is not good, the resistance will increase, which can easily trigger the anti-extrusion function, resulting in the door leaf cannot be locked. The installation tolerances of the EMU body and door frame are accumulated, resulting in limited adjustment size. The plug door frame is installed with the body, and there are also installation tolerances during installation. The early tolerances are accumulated, the door does not follow the door frame after closing, and the sealing strip does not fit the door frame properly, resulting in many air leakage points of the plug door during the air tightness test, making the adjustment more difficult. Common faults of the double-leaf plug door of the EMU also include: door switch stuck, insufficient clamping force after the door is closed, poor sealing after closing, etc. These faults will directly affect the safety of vehicle operation. In order to reduce the occurrence of such failures and eliminate vehicle safety hazards, after the installation of the split-type plug sliding door, each mechanical component must be adjusted and tested to ensure that all of them are within the qualified size range and pass the air tightness test. The adjustment and testing of the split-type plug sliding door is difficult. The two doors need to be adjusted in coordination with each other. The various mechanical components are interrelated and their sizes affect each other. If the size of one position is adjusted, the sizes of multiple positions will change accordingly. The adjustment and testing of the split-type plug sliding door in the prior art basically depends on the personal work experience of the technicians and takes a lot of time. Summary of the invention

[0004] The present invention aims to solve the technical problems in the prior art and provides a method for detecting the position and size of a double-opening plug door of an EMU.

[0005] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0006] A method for detecting the position and size of a double-opening plug sliding door of a train unit comprises the following steps:

[0007] Step i: Detection of the upper middle seam position;

[0008] Check whether there is any loose sealing due to insufficient squeezing of the two door leaves;

[0009] Check the joints of the two doors' seal strips to see if there are any extrusion bulges that may cause poor sealing.

[0010] Check whether the left and right door leaves are synchronized when entering the upper slideway curve;

[0011] Step ii: Detection of the position of the character on the upper left and right sides;

[0012] Check whether the balance wheels on the left and right sides are under stress;

[0013] Check the centering dimensions of two door leaves;

[0014] Step iii: Detection of the positions of the vertical bars on the left and right sides;

[0015] Check the fit between the sealing strips on both sides and the door frame;

[0016] Check the degree of compression of the auxiliary lock after the electric door is closed;

[0017] Step iv: Detection of the corner positions on the left and right sides of the lower part;

[0018] Detect the lower swing-out size;

[0019] Make sure the lower arm roller does not interfere with the door frame when the door leaf is closing;

[0020] Close the door manually and make sure the seal strip is in close contact with the door frame.

[0021] Open and close the door leaf electrically once to check the distance between the safety lock hook and the door leaf roller, as well as the distance between the lower stop pin and the threshold insert;

[0022] Step v: Detection of the lower center seam position;

[0023] Detect the distance between the lower gear pin and the insert;

[0024] Check the V-shaped dimensions of the door leaf.

[0025] In the above technical solution, the detection in step i to determine whether there is a poor seal due to insufficient squeezing of the two door leaves is specifically as follows:

[0026] Check whether the sealing strip is in good contact with the door frame; check the centering size of the door leaf. At the door leaf buckle, check that the left-right distance difference from the outer edge of the door frame to the corresponding side finger guard rubber strip raised measuring point is less than 2mm; check that the compression distance of the finger guard rubber strip raised measuring points on both sides is (40+ / -1)mm; check and adjust the V-shaped size of the door leaf to ensure that the upper measuring point is at least 3mm larger than the lower measuring point;

[0027] In the above technical solution, the step i of detecting whether the left and right door leaves are synchronized when entering the upper slideway curve is specifically as follows:

[0028] Move the door leaf in the closing direction, and after entering the bend of the upper slide, check whether the distance between the two doors and the lower door frame is consistent. If not, move the upper slide of the door leaf on the side that is relatively far away to the middle position; after closing the door leaf, check the sealing status again. If the sealing effect is poor, continue to reduce the upper swing size on that side.

[0029] In the above technical solution, the step ii of detecting whether the balance wheels on the left and right sides are subjected to force is specifically as follows:

[0030] Ensure a gap of at least 3mm between the inner side of the roller and the door panel so that the roller does not interfere with the door leaf; after the door leaf is closed and the auxiliary lock is actuated, confirm that the roller is not subject to force interference.

[0031] In the above technical solution, the step ii of detecting the centering size of the two door leaves is specifically: detecting the centering size of the two door leaves to make it less than or equal to 2 mm.

[0032] In the above technical solution, the step iii of detecting the degree of fit between the sealing strips at the vertical strips on both sides and the door frame is specifically as follows:

[0033] Under the premise that the auxiliary lock is not tightened, check the fit between the vertical rubber strips on both sides and the door frame. When the door leaf is in the closed state, check whether there is a gap between the rubber strips and the door frame. Divide the middle position into the upper and lower halves to check the fit.

[0034] In the above technical solution, the step iii of detecting the degree of compression of the auxiliary lock after the electric door is closed is specifically as follows:

[0035] Adjust the wind pressure of the door system to 5.5 bar, and the auxiliary lock size from 5+ / -2mm to 5mm;

[0036] Then, by adding or removing adjustment pads, both sides can be locked at a wind pressure of 5.5 bar, provided that the red mark just leaks out;

[0037] Finally, by adjusting the size by 5+ / -2mm, increasing or decreasing it, we can ensure that the auxiliary locks on both sides can operate at the same time.

[0038] In the above technical solution, the lower swing size detected in step iv is specifically: the distance from the lower inner side of the door leaf to the sealing surface of the door frame is 67+2 / -4mm.

[0039] In the above technical solution, in step iv, the door leaf is electrically opened and closed once, and the distance between the safety lock hook and the door leaf roller, and the distance between the lower stop pin and the threshold insert are detected, specifically:

[0040] Open and close the door electrically once, and confirm that the distance between the safety lock hook and the door roller is 0.5-1.5mm, and the distance between the lower stop pin and the threshold insert is 0.5-1mm.

[0041] In the above technical solution, in step v:

[0042] Check the distance between the lower stop pin and the insert, specifically: confirm that the distance between the lower stop pin and the insert is 0.5-1mm.

[0043] Check the V-shaped size of the door leaf, specifically: the upper reference point is 3-6mm larger than the lower reference point.

[0044] The method for detecting the position and size of the double-opening plug sliding doors of a motor vehicle of the present invention can quickly solve the overall error change, keep the size within a controllable range, and ensure that the air tightness test is passed smoothly, thereby improving production efficiency, making the adjustment controllable and standardized, and can be used to quickly train learning personnel.

[0045] The detection method for the position and size of the double-leaf plug sliding door of a train unit using the present invention can quickly solve the problem of poor sealing of various parts of the double-leaf plug sliding door, fundamentally clarify the detection method, integrate the beauty of craftsmanship and manufacturing into production, achieve consistency in production process and results, thereby improving the processing capacity of the plug sliding door's air leakage points during the air-tight test, allowing the air-tight test to be passed smoothly, and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0047] Figure 1 The present invention is a block diagram of the method for detecting the position and size of the double-opening plug sliding doors of a motor vehicle unit.

[0048] Figure 2 A schematic diagram of the structure of a sliding plug door for detecting the position and size of a double-opening sliding plug door of a train unit using the method for detecting the position and size of the double-opening sliding plug door of the present invention.

[0049] The reference numerals in the figures indicate:

[0050] 1-the position of the straight line on the left and right sides of the upper part; 2-the position of the center seam on the upper part; 3-the position of the vertical bars on the left and right sides; 4-the position of the corners on the left and right sides of the lower part; 5-the position of the center seam on the lower part. DETAILED DESCRIPTION

[0051] The inventive concept of the present invention is:

[0052] The double-leaf plug-in door uses a drive motor to open and close the door, and determines whether there is an obstacle by detecting the size of the door closing force. Therefore, when the two doors do not cooperate well, the large closing force will trigger the anti-squeezing function, and the door leaf cannot be locked. The adjustment size of the left and right doors of the double-leaf plug-in door has a great influence on each other. If the coordination is not good, the resistance will increase, which can easily trigger the anti-squeezing function and cause the door leaf to be unable to lock. The installation tolerances of the EMU body and door frame are accumulated, resulting in limited adjustment size. The plug-in door frame is installed with the body, and there are also installation tolerances during installation. The early tolerances are accumulated, and the door does not follow the shape of the door frame after closing, and the sealing strip does not fit the door frame properly, resulting in many air leakage points of the plug-in door during the air tightness test, making the adjustment more difficult.

[0053] The detection method of the present invention requires that the adjustment size of each mechanical component is guaranteed to be within the tolerance, and the limit value is not taken as far as possible, so as to ensure the sealing and the normal function. During the detection and adjustment, the corresponding related mechanical components are adjusted according to the actual fit between the eight-shaped sealing strip and the door frame.

[0054] The present invention is described in detail below with reference to the accompanying drawings.

[0055] like Figure 1-2 As shown, the sealing of the plug door is checked through the single-vehicle air tightness test. The air leakage positions of the two doors are checked from top to bottom to determine the air leakage points. After preliminary tests and data statistics, the air leakage points are divided into 5 locations, namely: the upper middle seam position 2, the upper left and right sides of the straight position 1, the left and right sides of the vertical bar position 3, the lower left and right sides of the corner position 4, and the lower middle seam position 5. According to the air leakage points, the size of the related mechanical parts is tested so that the eight-shaped sealing strip can better fit the door frame, thereby ensuring that the single-vehicle air tightness test is passed smoothly.

[0056] The method for detecting the position and size of the double-opening plug sliding door of a motor vehicle unit of the present invention comprises the following steps:

[0057] First, determine the size of the plug door. Then:

[0058] Step 1: Detection of the upper middle seam position 2

[0059] There are three situations where the upper middle seam position 2 is not sealed tightly:

[0060] 1. After the door leaves are locked, the two door leaves are not fully squeezed and cannot reach the sealing state, resulting in poor sealing.

[0061] 2. After the door is locked, the two door panels are too close together, and the junction of the two doors' splayed sealing strips bulges, resulting in poor sealing.

[0062] 3. The left and right doors are not synchronized when entering the upper slide curve, and the swing is inconsistent, resulting in one side fitting into the door frame while the other side does not fit into the door frame, resulting in poor sealing.

[0063] According to the different reasons for the poor sealing, make the following tests and optimization adjustments.

[0064] 1. After the door leaves are locked, the two door leaves are not fully squeezed and cannot reach the sealing state, resulting in poor sealing.

[0065] 1.1 Use a 0.5mm feeler gauge to check whether the sealing strip fits the door frame to ensure that the seal strip fits the door frame appropriately. During the inspection, no interference should occur between the mechanical parts of the door leaf.

[0066] 1.2 Use a steel tape measure to check the centering size of the door leaf, because the size of the door leaf affects the centering size. At the door leaf buckle, check the distance from the outer edge of the door frame to the corresponding side finger guard rubber strip raised measuring point, and ensure that the left and right difference is less than 2mm. Then close the door leaf and check the compression distance a=(40+ / -1)mm of the raised measuring points of the finger guard rubber strips on both sides. In this case, a takes a negative difference, and a=39 is the best effect. The prerequisite is that the door leaf does not produce anti-extrusion function. If the anti-extrusion function is triggered, adjust a to 40mm.

[0067] 1.3 If the problem is still not solved after testing and adjusting according to methods 1.1 and 1.2, it is necessary to test and adjust the V-shaped size of the door leaf to ensure that the upper measuring point is 3mm larger than the lower measuring point, so that the upper part of the door leaf moves relatively to the middle position, so that the upper rubber strip can better contact after the door leaf is closed to achieve a sealing effect.

[0068] After the V-type detection and adjustment, it is also necessary to check the joints of the two doors' figure-eight sealing strips. The two door panels must not be closed too tightly, causing the sealing strips to be squeezed and bulged, resulting in poor sealing and leakage.

[0069] 2. Check whether the left and right door leaves are synchronized when entering the upper slide bend. If they are not aligned, one side of the door leaf will fit with the door frame, while the other side will not, resulting in a poor seal.

[0070] 2.1 Slowly move the door leaf in the closing direction, and after entering the bend of the upper slide, check whether the distance between the two doors and the lower door frame is consistent. If not, move the upper slide of the door leaf on the side that is relatively far away to the middle position. In this way, the door on the side that is not tightly sealed will continue to move a distance toward the middle due to the movement of the slide to the middle, and the sealing strip will be closer to the door frame, thereby achieving a sealing effect.

[0071] 2.2 After closing the door leaf, check the sealing status again. If the sealing effect is poor, the upper swing size of that side can be further reduced to achieve the best sealing effect.

[0072] Step 2: Detection of the character position 1 on the upper left and right sides

[0073] The seal of the upper left and right sides of the straight line position 1 is not tight. There are two main inspection items. First, check whether the balance wheels on the left and right sides are under stress. The rollers are required to rotate easily in the steel groove. There is a gap of at least 3mm between the inner side of the roller and the door panel. There is no interference with the door leaf. After the door leaf is closed and the auxiliary lock is activated, confirm again that the rollers are not subject to force interference to prevent stress from being generated outside the vehicle due to interference, resulting in the door leaf rubber strip and the door frame not fitting properly. Second, after the upper slide is adjusted, check and confirm that the centering size of the two door leaves is less than or equal to 2mm to ensure the sealing requirements.

[0074] Step 3: Detection of vertical bar position 3 on the left and right sides

[0075] The detection of the vertical bar position 3 on the left and right sides is divided into two parts:

[0076] 1. Check the joint between the sealing strips on both sides and the door frame

[0077] Under the premise that the auxiliary lock is not tightened, check the fit between the vertical rubber strips on both sides and the door frame. When the door leaf is in the closed state, use a 0.5mm feeler gauge to check whether there is a gap between the rubber strips and the door frame. Divide the middle position into the upper and lower halves to check the fit.

[0078] 2. Check the degree of compression of the auxiliary lock after the electric door is closed

[0079] By testing and adjusting the degree of compression of the auxiliary lock, we can better ensure that the rubber strips on the vertical bars on both sides fit tightly with the door frame. The testing and adjustment method is to first adjust the wind pressure of the door system to 5.5 bar, and adjust the auxiliary lock size 5+ / -2mm to 5mm, which is the red mark on the auxiliary lock tongue. Then, by adding or removing the adjustment pad, the red mark just leaks out, so that both sides can be locked at 5.5 bar wind pressure. Finally, by adjusting the size of 5+ / -2mm, increase or decrease, to ensure that the auxiliary locks on both sides can act at the same time to achieve the best sealing effect.

[0080] Step 4: Detection of the corner position 4 on the left and right sides of the lower part

[0081] The corner positions 4 on the left and right sides of the lower part are the most common air leakage positions for air tightness tests, and the detection positions are the lower swing out and the downward slide.

[0082] 1. First, the lower swing-out size needs to be tested. The distance from the lower inner side of the door leaf to the sealing surface of the door frame is 67+2 / -4mm. Then check that the lower swing arm roller cannot interfere with the door frame during the closing process of the door leaf, and the detection distance is greater than 1mm.

[0083] 2. Close the door manually and use a 0.5mm feeler gauge to check whether the figure-eight sealing strip fits tightly against the door frame.

[0084] 3. Open and close the door electrically once, check that the distance between the safety lock hook and the door roller is 0.5-1.5mm, and that the distance between the lower stop pin and the threshold insert is 0.5-1mm.

[0085] Step 5: Detection of the lower middle seam position 5

[0086] The lower center seam position 5 can be detected and adjusted through the following two locations:

[0087] 1. The two sides of the lower center seam position 5 are the installation positions of the lower stop pins. The distance between the lower stop pins and the embedded block is 0.5-1mm. This size directly affects the degree of air leakage at the center seam. When the door opening and closing do not interfere, try to reduce the distance between them.

[0088] 2. Check the V-shaped size of the door leaf. The upper reference point is 3-6mm larger than the lower reference point, which makes the size of the lower part of the V smaller. The upper measured size is larger than the lower part, so that the lower part makes contact in advance after closing the door, increasing the sealing effect.

[0089] Finally, an air tightness test is carried out to confirm that the tested and adjusted plug door passes the air tightness test.

[0090] The method for detecting the position and size of the double-opening plug sliding doors of a motor vehicle of the present invention can quickly solve the overall error change, keep the size within a controllable range, and ensure that the air tightness test is passed smoothly, thereby improving production efficiency, making the adjustment controllable and standardized, and can be used to quickly train learning personnel.

[0091] The detection method for the position and size of the double-leaf plug sliding door of a train unit using the present invention can quickly solve the problem of poor sealing of various parts of the double-leaf plug sliding door, fundamentally clarify the detection method, integrate the beauty of craftsmanship and manufacturing into production, achieve consistency in production process and results, thereby improving the processing capacity of the plug sliding door's air leakage points during the air-tight test, allowing the air-tight test to be passed smoothly, and improving product quality.

[0092] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A method for detecting the position and size of a double-opening plug door of a train set, characterized in that: The following steps are involved: Step i: Detection of the upper center seam position (2); Check whether there is any loose sealing due to insufficient squeezing of the two door leaves; Check the joints of the two doors' seal strips to see if there are any extrusion bulges that may cause poor sealing. Check whether the left and right door leaves are synchronized when entering the upper slideway curve; Step ii: Detection of the character positions (1) on the upper left and right sides; Check whether the balance wheels on the left and right sides are under stress; Check the centering dimensions of two door leaves; Step iii: Detection of the positions of the vertical bars on the left and right sides (3); Check the fit between the sealing strips on both sides and the door frame; Check the degree of compression of the auxiliary lock after the electric door is closed; Step iv: Detection of the left and right corner positions (4) of the lower part; Detect the lower swing size; Make sure the lower arm roller does not interfere with the door frame when the door leaf is closing; Close the door manually and make sure the seal strip is in close contact with the door frame. Open and close the door leaf electrically once to check the distance between the safety lock hook and the door leaf roller, as well as the distance between the lower stop pin and the threshold insert; Step v: Detection of the lower center seam position (5); Detect the distance between the lower gear pin and the insert; Check the V-shaped dimensions of the door leaf; The detection in step i above is to determine whether there is a poor seal due to insufficient squeezing of the two door leaves, specifically: Check whether the sealing strip is in good contact with the door frame; check the centering size of the door leaf, and at the door leaf buckle, check that the left and right distance difference from the outer edge of the door frame to the corresponding side finger guard rubber strip raised measuring point is less than 2mm; check that the compression distance of the finger guard rubber strip raised measuring points on both sides is 40±1mm; check and adjust the V-shaped size of the door leaf to ensure that the upper measuring point is at least 3mm larger than the lower measuring point; The above step i is to detect whether the left and right door leaves are synchronized when entering the upper slideway bend, specifically: Move the door leaf in the closing direction, and after entering the upper slideway bend, check whether the distance between the two doors and the lower door frame is consistent. If not, move the upper slideway of the door leaf on the side with the relatively farther distance to the middle position; after closing the door leaf, check the sealing status again. If the sealing effect is not good, continue to reduce the upper swing size of that side; The above step ii is to detect whether the balance wheels on the left and right sides are under force, specifically: Ensure a gap of at least 3mm between the inner side of the roller and the door panel so that the roller does not interfere with the door leaf; after the door leaf is closed and the auxiliary lock is activated, confirm that the roller is not subject to force interference; The above step iii is to detect the degree of compression of the auxiliary lock after the electric door is closed, specifically: Adjust the wind pressure of the door system to 5.5 bar, and the auxiliary lock size from 5±2mm to 5mm; Then, by adding or removing adjustment pads, both sides can be locked at a wind pressure of 5.5 bar, provided that the red mark just leaks out; Finally, by adjusting the size by 5±2mm, increasing or decreasing it, it is ensured that the auxiliary locks on both sides can operate at the same time.

2. The detection method according to claim 1, characterized in that: The step ii of detecting the centering size of the two door leaves is specifically as follows: detecting the centering size of the two door leaves to make it less than or equal to 2 mm.

3. The detection method according to claim 1, characterized in that: The step iii is to detect the degree of fit between the sealing strips at the vertical strips on both sides and the door frame, specifically: Under the premise that the auxiliary lock is not tightened, check the fit between the vertical rubber strips on both sides and the door frame. When the door leaf is in the closed state, check whether there is a gap between the rubber strips and the door frame. Divide the middle position into the upper and lower halves to check the fit.

4. The detection method according to claim 1, characterized in that: The lower swing-out dimensions detected in step iv are specifically: the distance from the lower inner side of the door leaf to the sealing surface of the door frame is 63mm~69mm.

5. The detection method according to claim 1, characterized in that: In step iv, the door leaf is opened and closed electrically once to detect the distance between the safety lock hook and the door leaf roller, and the distance between the lower stop pin and the threshold insert, specifically: Open and close the door electrically once to confirm that the distance between the safety lock hook and the door roller is 0.5mm~1.5mm, and the distance between the lower stop pin and the threshold insert is 0.5mm~1mm.

6. The detection method according to claim 1, characterized in that: In step v: Check the distance between the lower gear pin and the insert, specifically: confirm that the distance between the lower gear pin and the insert is 0.5mm~1mm; Check the V-shaped size of the door leaf, specifically: the upper reference point is 3mm~6mm larger than the lower reference point.

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