CN109540416B - Train end plugging device for air tightness test - Google Patents
Train end plugging device for air tightness test Download PDFInfo
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- CN109540416B CN109540416B CN201811534452.2A CN201811534452A CN109540416B CN 109540416 B CN109540416 B CN 109540416B CN 201811534452 A CN201811534452 A CN 201811534452A CN 109540416 B CN109540416 B CN 109540416B
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- 230000007246 mechanism Effects 0.000 claims abstract description 86
- 229910052751 metal Inorganic materials 0.000 claims abstract description 67
- 239000002184 metal Substances 0.000 claims abstract description 67
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 238000003032 molecular docking Methods 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000004033 plastic Substances 0.000 description 13
- 239000002360 explosive Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 241000863480 Vinca Species 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
A train end plugging device for airtight test belongs to railway train airtight test and uses guest room end sealing device field, and it includes travelling car, braced frame, vertical adjustment frame, cylinder, two limit bolts, level every single move adjustment mechanism, metal shutoff board, coupling shutoff case, two positive negative pressure stop valves and automatically controlled relief valve. The end wall door frame plugging mechanism can enable the suspended exposed part at the end part of the coupler docking device to be completely inserted into the coupler plugging box, and the inclined angle posture of the plugging device positioning mechanism is finely adjusted by taking the ball head as a fulcrum, so that the gate structure in the middle of the end wall is completely plugged by the metal plugging plate, and the air tightness test of the passenger compartment of the train is smoothly implemented.
Description
Technical Field
The invention belongs to the field of passenger room end sealing devices for a rail train air tightness test, and particularly relates to a train end plugging device for the air tightness test.
Background
The high-speed rail passenger car such as the motor train unit has a relatively strict precision requirement on the air pressure control in the passenger compartment of the passenger train unit, so that after the passenger compartment of the passenger train unit is assembled with the underframe floor, the door, window, air-conditioning interface and other parts of the passenger compartment of the passenger train unit are required to be respectively plugged, so that the inner cavity of the passenger compartment above the floor forms a closed space, and the air in the closed space is pumped out by utilizing the vacuum pump negative pressure system.
The window of the passenger compartment and the air conditioner interface are regular in shape and small in area, and an ideal sealing effect can be achieved by using a flat sealing plate which is matched in size and provided with rubber sealing strips, but when the passenger compartment 11 is assembled with the underframe floor, the assembly relationship of structural components at the end part of the passenger compartment is as shown in fig. 1 to 5, a horizontal floor tray 14-1 is arranged at the upper part of the end underframe 14, a protruding coupler butting device 13 is arranged at the center of the front end of the end underframe 14, and the coupler butting device 13 is positioned below the floor tray 14-1. The front end face of the passenger compartment 11 and the front end of the end chassis 14 are respectively butted and fixedly connected with the rear end face of the end wall 12. The central circular tube 13-1 at the end part of the coupler butting device 13 penetrates through the door frame from inside to outside and is exposed outside the front end face of the end wall A in a suspended posture, and the horizontal plane of the circular tube axis divides the door structure in the middle of the end wall 12 into a door upper area 12-1 and a door lower area 12-2.
In order to seal the corresponding area of the door frame on the end wall 12, as shown in fig. 6, the prior art solution is to separately manufacture an upper sealing plate 15 with a semicircular upper clamping groove 15-1 and a lower sealing plate 16 with a semicircular lower clamping groove 16-1, wherein the shape of the upper sealing plate 15 is the same as that of the upper area 12-1 of the doorway, but the size of the outer contour line of the upper sealing plate 15 is 120% of that of the upper area 12-1 of the doorway, the shape of the lower sealing plate 16 is the same as that of the lower area 12-2 of the doorway, and the size of the outer contour line of the lower sealing plate 16 is 120% of that of the lower area 12-2 of the doorway. The diameters of the semicircular upper clamping groove 15-1 and the semicircular lower clamping groove 16-1 are 120% of the diameter of the central circular tube 13-1, and the two clamping grooves are spliced together to form a clamping groove circular hole and sleeved on the outer diameter of the central circular tube 13-1. When in use, the integral sealing plate with the clamping groove round holes formed by the upper sealing plate 15 and the lower sealing plate 16 is used for sealing the middle gate structure of the end wall 12, the integral sealing plate is made of a light plastic plate material, and a gap between the clamping groove round holes and the outer diameter of the central round pipe 13-1 is used for enabling a negative pressure exhaust pipeline and a pressure gauge pipeline to be inserted into the rear part of the end wall 12 and reach the passenger compartment 11. After the gaps remained around the outer diameter of the central circular tube 13-1 are plugged by using rubber sealing filling materials, the manufactured integral plastic plugging plate is stuck outside the door frame on the end wall 12 by using plastic cloth and adhesive tape, and then the air tightness test can be carried out.
However, end walls 12 of different models often correspond to entirely different door frame shapes, sizes and areas, as well as different diametric dimensions of coupler knuckle 13 and different dimensions of its exposed portion that is suspended from the outside of end wall 12. Therefore, the existing integral plastic plugging plate also needs to be aimed at the gate structures of different vehicle types, and the corresponding manufacturing structure and size are all corresponding to the matched multiple plastic plugging plates of the door frame structure of the vehicle type to be tested, so that the problems of various types of plastic plugging plates, poor universality and occupation of storage space are caused. On the other hand, the whole plastic plugging plate has lighter weight and is convenient to fix, but the structure is fragile, and cracks are easy to generate due to collision or aging, so that the air tightness of the whole plastic plugging plate is reduced. In addition, the process of filling and sealing the gap between the clamping groove round hole and the outer diameter of the central round tube 13-1 is time-consuming and labor-consuming, has low efficiency, is easy to generate the phenomenon of loose filling and air leakage in the negative pressure test, and causes damage to the negative pressure exhaust pipeline and the pressure gauge pipeline.
Disclosure of Invention
In order to solve the problems that the end wall door frame plugging plate adopted in the existing train air tightness test is an integral plastic plugging plate with a slot round hole, which is formed by jointly splicing the plugging plates of an upper semicircular slot and a lower semicircular slot, the process of filling and sealing a gap between the slot round hole and the outer diameter of a central round pipe is time-consuming and labor-consuming, the efficiency is low, and the phenomenon of loose and air leakage of a filler is easy to occur; moreover, the existing plastic plate structure is fragile, cracks are easily generated due to collision or aging, and the air tightness is reduced; the invention provides a train end plugging device for an airtight test, which aims at the technical problems that the existing integral plastic plugging plate needs to be changed in shape along with the size and structure of a doorway structure of different vehicle types, so that the plastic plugging plate is various and has poor universality.
The technical scheme adopted for solving the technical problems is as follows:
The train end plugging device for the air tightness test comprises a movable trolley, a supporting frame, a vertical adjusting frame, an air cylinder, two limit bolts, a horizontal and pitching adjusting mechanism, a metal plugging plate, a car coupler plugging box, two positive and negative pressure stop valves and an electric control safety valve;
The bottoms of the four corners of the movable trolley are fixedly connected with a rail wheel for advancing on a rail respectively, the bottoms of the supporting frames are fixedly connected to the movable trolley, the inner sides of the two ends of the upper part of the supporting frames are respectively provided with a frame guide rail, and two limit bolts are respectively fixedly connected to the two sides of the upper part of the supporting frames and are correspondingly positioned below the two frame guide rails;
The vertical adjusting frame is of a rectangular frame structure, the outer end surfaces of two sides of the vertical adjusting frame are respectively provided with a sliding block, and the vertical adjusting frame is in sliding connection with the supporting frame through the matching of the two sliding blocks and the two frame guide rails; the end part of a piston rod of the air cylinder is fixedly connected to the middle part of the top cross beam of the supporting frame, the end part of the cylinder body of the air cylinder is fixedly connected to the middle part of the bottom cross beam of the vertical adjusting frame, and the axis of the air cylinder, the center line of the bottom cross beam of the vertical adjusting frame and the center line of the top cross beam of the supporting frame are coplanar;
the bottom of the horizontal adjusting mechanism of the horizontal and pitching adjusting mechanism is fixedly connected to the middle position of the top cross beam of the vertical adjusting frame, the bottom of the pitching adjusting mechanism of the horizontal and pitching adjusting mechanism is fixedly connected to the top of the horizontal adjusting mechanism, and the top of the pitching adjusting mechanism is fixedly connected to the middle position of the upper part of the metal plugging plate;
the whole metal plugging plate is of a rectangular plate structure, sealing strips are stuck to the peripheral edges of the metal plugging plate, pin shaft through holes are formed in the middle of the upper part of the metal plugging plate, two positive and negative pressure stop valve through holes are symmetrically formed in the middle lower part of the metal plugging plate, a plurality of screw holes are formed in the peripheries of the pin shaft through holes and the two positive and negative pressure stop valve through holes, two electric control safety valve through holes are formed in the middle lower part of the metal plugging plate between the two positive and negative pressure stop valve through holes, and a square mouth for accommodating the end part of a coupler butting device is formed in the lower part of the metal plugging plate; the coupler plugging box is fixedly connected to the square mouth of the metal plugging plate and is positioned on the rear end face of the metal plugging plate;
The two positive and negative pressure stop valves penetrate through the two positive and negative pressure stop valve through holes in a one-to-one correspondence mode and are fixedly connected with the metal plugging plate through screws, and the two detection needles of the electric control safety valve penetrate through the two electric control safety valve through holes in a one-to-one correspondence mode and are fixedly connected with the metal plugging plate through screws.
The horizontal and pitching adjusting mechanism comprises a horizontal adjusting slide rail mechanism, two screw mechanisms, a ball mechanism, a positioning pin and a reinforcing plate; the horizontal adjusting slide rail mechanism mainly comprises a slide block and a guide rail which are connected in a sliding way, the guide rail is arranged along the direction of the top cross beam of the vertical adjusting frame, and two ends of the guide rail are fixedly connected to the middle position of the top cross beam of the vertical adjusting frame; the ball head mechanism comprises a ball head and a ball head base fixedly connected with the bottom of the ball head, and the ball head base is fixedly connected to the middle position of the top of the sliding block of the horizontal adjusting sliding rail mechanism; the two screw rod mechanisms are symmetrically arranged at two sides of the horizontal adjusting slide rail mechanism, screw end bases of the screw rod mechanisms are fixedly connected at two ends of a top cross beam of the vertical adjusting frame, and screw rod ends of the screw rod mechanisms are propped against two ends of a sliding block of the horizontal adjusting slide rail mechanism; the center of the reinforcing plate is provided with a pin hole, the periphery of the pin hole of the reinforcing plate is provided with a plurality of screw holes, and the reinforcing plate is fixedly connected with the pin shaft through hole of the metal plugging plate through screws; the front end of the locating pin sequentially passes through the pin hole and the pin shaft through hole, and then the ball socket and the ball head form a spherical pair.
The length and width dimensions of the coupler plugging box are 200% of the radial dimension of the coupler docking device; the depth dimension of the coupler plugging box is 120% of the dimension length of the coupler docking device relative to the suspended exposed part outside the end wall.
The outline dimension of the metal plugging plate is 120% of the outline dimension of the largest doorframe, and the height from the upper edge of the square opening of the metal plugging plate to the ground is the same as the height from the upper end face of the floor tray to the ground.
The metal plugging plate is a metal wall plate.
The beneficial effects of the invention are as follows: the metal plugging plate of the train end plugging device for the air tightness test is a metal wall plate made of aluminum alloy or stainless steel, and the external dimension of the metal plugging plate is 120% larger than the external dimension of the door frame with the largest dimension on each vehicle type, so that the metal plugging plate has good universality, does not need to be independently designed and replaced according to different vehicle types, is firm and durable, and is not easy to damage. The coupler plugging box fixedly connected to the rear side of the metal plugging plate is used for completely inserting the end suspended exposed part of the coupler docking device into the coupler plugging box, so that the structural form of the integral plastic plugging plate with the slot round hole is formed by discarding the old two splicing forms of the plugging plate and the lower plugging plate, and the process of filling and sealing a gap between the slot round hole and the outer diameter of the central round tube is completely avoided, thereby improving the operation efficiency and the air tightness of the plugging device and avoiding the occurrence of air leakage caused by the loosening of the filler.
The pin shaft through hole of the metal plugging plate is fixedly connected with the reinforcing plate through a screw, and after the front end of the positioning pin sequentially passes through the pin hole and the pin shaft through hole, the ball socket and the ball head form a spherical pair, so that the whole weight of the metal plugging plate is born through the spherical pair, and a plurality of degrees of freedom of rotation, left-right inclination and front-back pitching are obtained by taking the ball head as a fulcrum, thereby being convenient for sealing butt joint with an end wall door frame. The periphery of the pin hole of the reinforcing plate is provided with a plurality of screw holes which are used for sharing the radial pressure of the positioning pin on the pin shaft through hole, so that the pin shaft through hole is protected from being damaged, and the air tightness of the pin shaft through hole is improved; the screw rod end of the screw rod mechanism is propped against the two ends of the sliding block of the horizontal adjusting sliding rail mechanism and is used for carrying out transverse fine adjustment on the relative position of the horizontal adjusting sliding rail mechanism and the top cross beam of the vertical adjusting frame.
The plugging device positioning mechanism composed of the travelling trolley, the supporting frame, the vertical adjusting frame, the air cylinder, the two limiting bolts and the horizontal and pitching adjusting mechanisms can translate longitudinally along the track through the travelling trolley, the two screw rod mechanisms and the horizontal adjusting slide rail mechanism are matched for use, the position of the ball head mechanism can be adjusted horizontally and transversely, and the vertical adjusting frame and the air cylinder are matched for use, so that the vertical height of the ball head mechanism can be adjusted. The vertical adjusting frame with the vertical lifting function is used for guaranteeing the corresponding positions of the metal plugging plate and the end wall door frame in the vertical direction and adjusting the distance between the coupler plugging box and the end part of the coupler butt joint device accommodated by the coupler plugging box.
The end wall door frame plugging mechanism can enable the suspended exposed part at the end part of the coupler docking device to be completely inserted into the coupler plugging box, and the inclined angle posture of the plugging device positioning mechanism is finely adjusted by taking the ball head as a fulcrum, so that the gate structure in the middle of the end wall is completely plugged by the metal plugging plate, and the air tightness test of the passenger compartment of the train is smoothly implemented.
In addition, the train end plugging device for the air tightness test has the advantages of simple and practical structure, convenience in operation, low cost, convenience in popularization and the like.
Drawings
FIG. 1 is a schematic structural view of the structural component assembly relationship of the end of a legacy car;
FIG. 2 is a schematic view of the explosive assembly of FIG. 1;
FIG. 3 is a right side view of FIG. 1;
FIG. 4 is a right side view of FIG. 2;
FIG. 5 is a left side view of FIG. 3;
FIG. 6 is a schematic structural view of a unitary closure plate with slotted circular holes formed by co-splicing a legacy upper closure plate and a lower closure plate;
FIG. 7 is a perspective view of the end-of-train plugging device for use in a gastightness test of the present invention;
FIG. 8 is a front view of the end of train plugging device for use in a gastightness test of the present invention;
FIG. 9 is a schematic view of the explosive assembly of both the end wall door frame plugging mechanism and the plugging device positioning mechanism of the present invention;
FIG. 10 is a schematic view of an explosive assembly of the plugging device positioning mechanism of the present invention;
FIG. 11 is a perspective view of the horizontal and pitch adjustment mechanism of the present invention;
FIG. 12 is a schematic view of an explosive assembly of the horizontal and pitch adjustment mechanism of the present invention;
FIG. 13 is a front view of the horizontal and pitch adjustment mechanism of the present invention;
FIG. 14 is a schematic partial cross-sectional view of a spherical pair structure of the present invention;
FIG. 15 is a perspective view of an end wall door frame plugging mechanism of the present invention;
FIG. 16 is a perspective view of the end wall door frame plugging mechanism of the present invention at another view angle;
FIG. 17 is a perspective view of the positive and negative pressure shut-off valve and the electrically controlled safety valve of the present invention;
FIG. 18 is a schematic illustration of the application of the end-of-train plugging device of the present invention for use in a gastightness test;
Fig. 19 is a schematic view of the explosive assembly of fig. 18.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 7 to 17, the end-of-train plugging device for the airtight test of the present invention comprises a traveling carriage 1, a supporting frame 2, a vertical adjusting frame 3, a cylinder 4, two limit bolts 5, a horizontal and pitch adjusting mechanism 6, a metal plugging plate 7, a coupler plugging box 8, two positive and negative pressure stop valves 9 and an electric control safety valve 10.
The bottoms of the four corners of the movable trolley 1 are respectively fixedly connected with a rail wheel 1-1 used for moving on a rail, the bottoms of the supporting frames 2 are fixedly connected to the movable trolley 1, the inner sides of two ends of the upper part of the supporting frames 2 are respectively provided with a frame guide rail 2-1, and two limit bolts 5 are respectively fixedly connected to two sides of the upper part of the supporting frames 2 and are correspondingly positioned below the two frame guide rails 2-1.
The vertical adjusting frame 3 is of a rectangular frame structure, the outer end surfaces of two sides of the vertical adjusting frame are respectively provided with a sliding block 3-1, and the vertical adjusting frame 3 is in sliding connection with the supporting frame 2 through the matching of the two sliding blocks 3-1 and the two frame guide rails 2-1; the end part of a piston rod of the air cylinder 4 is fixedly connected to the middle part of the top cross beam of the supporting frame 2, the end part of a cylinder body of the air cylinder 4 is fixedly connected to the middle part of the bottom cross beam of the vertical adjusting frame 3, and the axis of the air cylinder 4, the central line of the bottom cross beam of the vertical adjusting frame 3 and the central line of the top cross beam of the supporting frame 2 are coplanar; the cylinder 4 is used for adjusting the lifting height of the vertical adjusting frame 3 along the supporting frame 2, and the two limiting bolts 5 are used for limiting the lower limit of the height of the vertical adjusting frame 3.
The bottom of the horizontal adjusting mechanism of the horizontal and pitching adjusting mechanism 6 is fixedly connected to the middle position of the top cross beam of the vertical adjusting frame 3, the bottom of the pitching adjusting mechanism of the horizontal and pitching adjusting mechanism 6 is fixedly connected to the top of the horizontal adjusting mechanism, and the top of the pitching adjusting mechanism is fixedly connected to the middle position of the upper part of the metal plugging plate 7.
The whole of the metal plugging plate 7 is of a rectangular plate structure, sealing strips 7-1 are stuck to the peripheral edges of the metal plugging plate 7, pin shaft through holes 7-2 are formed in the middle of the upper part of the metal plugging plate 7, two positive and negative pressure stop valve through holes 7-3 are symmetrically formed in the middle lower part of the metal plugging plate 7, a plurality of screw holes are formed in the peripheries of the pin shaft through holes 7-2 and the two positive and negative pressure stop valve through holes 7-3, two electric control safety valve through holes 7-4 are formed in the middle lower part of the metal plugging plate 7 between the two positive and negative pressure stop valve through holes 7-3, and a square mouth for accommodating the end part of a coupler butting device 13 is formed in the lower part of the metal plugging plate 7; the coupler plugging box 8 is fixedly connected to the square mouth of the metal plugging plate 7 and is positioned on the rear end face of the metal plugging plate 7.
The two positive and negative pressure stop valves 9 pass through the two positive and negative pressure stop valve through holes 7-3 in a one-to-one correspondence manner and are fixedly connected with the metal plugging plate 7 through screws, and the two detection needles of the electric control safety valve 10 pass through the two electric control safety valve through holes 7-4 in a one-to-one correspondence manner and are fixedly connected with the metal plugging plate 7 through screws. The electric control safety valve 10 is also connected with the two positive and negative pressure stop valves 9 through control cables respectively and carries out switching control of on or off states of the two positive and negative pressure stop valves, so that the rated negative pressure value of the air compressor and the actual negative pressure value of the inner cavity of the carriage in the air tightness test process are monitored.
As shown in fig. 11 to 14, the horizontal and pitch adjusting mechanism 6 comprises a horizontal adjusting slide rail mechanism 6-1, two screw mechanisms 6-2, a ball mechanism 6-3, a positioning pin 6-4 and a reinforcing plate 6-5; the horizontal adjusting slide rail mechanism 6-1 mainly comprises a slide block and a guide rail which are connected in a sliding way, wherein the guide rail is arranged along the direction of the top cross beam of the vertical adjusting frame 3, and two ends of the guide rail are fixedly connected to the middle position of the top cross beam of the vertical adjusting frame 3; the ball head mechanism 6-3 comprises a ball head 6-3-1 and a ball head base fixedly connected with the bottom of the ball head 6-3-1, and the ball head base is fixedly connected to the middle position of the top of the sliding block of the horizontal adjusting sliding rail mechanism 6-1; the two screw rod mechanisms 6-2 are symmetrically arranged at two sides of the horizontal adjusting slide rail mechanism 6-1, the bases of the screw nut ends of the screw rod mechanisms 6-2 are fixedly connected at two ends of the top cross beam of the vertical adjusting frame 3, the screw rod ends of the screw rod mechanisms 6-2 are propped against two ends of the sliding block of the horizontal adjusting slide rail mechanism 6-1 and are used for carrying out transverse fine adjustment on the relative positions of the horizontal adjusting slide rail mechanism 6-1 and the top cross beam of the vertical adjusting frame 3; the center of the reinforcing plate 6-5 is provided with a pin hole 6-5-1, the periphery of the pin hole 6-5-1 of the reinforcing plate 6-5 is provided with a plurality of screw holes, the reinforcing plate 6-5 is fixedly connected to the position of the pin shaft through hole 7-2 of the metal plugging plate 7 through screws, and the reinforcing plate is used for sharing the radial pressure of the positioning pin 6-4 on the pin shaft through hole 7-2, so that the pin shaft through hole 7-2 is protected from being damaged, and the air tightness of the pin shaft through hole 7-2 is improved; the bottom of the front end of the locating pin 6-4 is provided with a ball socket 6-4-1, after the front end of the locating pin 6-4 sequentially passes through the pin hole 6-5-1 and the pin shaft through hole 7-2, the ball socket 6-4-1 and the ball head 6-3-1 form a spherical pair, so that the whole weight of the metal plugging plate 7 is born through the spherical pair, and a plurality of degrees of freedom of rotation, left-right inclination and front-back pitching are obtained by taking the ball head 6-3-1 as a fulcrum, thereby facilitating the sealing butt joint of the metal plugging plate and a door frame of the end wall 12.
The length and width dimensions of the coupler plugging box 8 are 200% of the radial dimensions of the coupler butting device 13; the depth dimension of the coupler plugging box 8 is 120% of the different dimension lengths of the coupler butting device 13 relative to the outer side suspended exposed part of the end wall 12, and the height from the upper edge of the square mouth of the metal plugging plate 7 to the ground is the same as the height from the upper end face of the floor tray 14-1 to the ground. The metal plugging plate 7 is a metal wall plate made of aluminum alloy or stainless steel, and the external dimension thereof is 120% of the external outline dimension of the largest door frame.
The vertical adjusting frame 3 with vertical lifting function is used for guaranteeing the corresponding positions of the metal plugging plate 7 and the end wall 12 door frame in the vertical direction and adjusting the distance between the coupler plugging box 8 and the end part of the coupler butting device 13 accommodated by the coupler plugging box. The metal plugging plate 7, the car coupler plugging box 8, the two positive and negative pressure stop valves 9 and the electric control safety valve 10 jointly form an end wall door frame plugging mechanism, and the movable trolley 1, the support frame 2, the vertical adjusting frame 3, the air cylinder 4, the two limit bolts 5 and the horizontal and pitching adjusting mechanism 6 jointly form a plugging device positioning mechanism.
When the train end plugging device for the air tightness test is specifically applied, the positive and negative pressure stop valve 9 is a DN80 type positive and negative pressure stop valve product produced by Shanghai you and ponding pipe industry limited company. The electronically controlled safety valve 10 is an airtight special electronically controlled safety valve manufactured by vinca passenger car company by using a Wipe WS28 series 7-core connector and a Yue's DN32 solenoid valve.
As shown in fig. 18 and 19, the end wall door frame plugging mechanism and the rail train to be tested are placed on the same rail through the rail wheel 1-1, the vertical adjusting frame 3 is driven by the air cylinder 4 to vertically move along the frame guide rail 2-1 on the supporting frame 2, so that the coupler plugging box 8 corresponds to the coupler docking device 13, after that, the end wall door frame plugging mechanism is pushed along the rail, the suspended exposed part of the end part of the coupler docking device 13 is completely inserted into the coupler plugging box 8, and the inclination posture of the plugging device positioning mechanism is finely adjusted by taking the ball head 6-3-1 as a fulcrum, so that the gate structure in the middle of the end wall 12 is completely plugged by the metal plugging plate 7. After that, the vacuum pump is started, and the air in the passenger compartment 11 is drawn out through the positive-negative pressure shut-off valve 9. The sealing strip 7-1 on the metal plugging plate 7 can completely seal the gate structure in the middle of the end wall 12 under the action of negative pressure. The electric control safety valve 10 monitors the vacuum degree in the carriage and the vacuum degree of the vacuum pump through the pressure sensor of the electric control safety valve, and adjusts and controls the opening and closing states of the positive and negative pressure stop valves 9 according to a preset air tightness test. So that the air tightness test of the passenger compartment of the train can be smoothly carried out.
Claims (4)
1. The train end plugging device for the air tightness test is characterized by comprising a movable trolley (1), a supporting frame (2), a vertical adjusting frame (3), an air cylinder (4), two limit bolts (5), a horizontal and pitching adjusting mechanism (6), a metal plugging plate (7), a coupler plugging box (8), two positive and negative pressure stop valves (9) and an electric control safety valve (10);
The bottoms of the four corners of the movable trolley (1) are fixedly connected with a rail wheel (1-1) for moving on a rail, the bottoms of the supporting frames (2) are fixedly connected to the movable trolley (1), the inner sides of the two ends of the upper part of the supporting frames (2) are respectively provided with a frame guide rail (2-1), and two limit bolts (5) are respectively fixedly connected to the two sides of the upper part of the supporting frames (2) and are correspondingly positioned below the two frame guide rails (2-1);
the vertical adjusting frame (3) is of a rectangular frame structure, the outer end surfaces of two sides of the vertical adjusting frame are respectively provided with a sliding block (3-1), and the vertical adjusting frame (3) is in sliding connection with the supporting frame (2) through the matching of the two sliding blocks (3-1) and the two frame guide rails (2-1); the end part of a piston rod of the air cylinder (4) is fixedly connected to the middle part of the top cross beam of the supporting frame (2), the end part of a cylinder body of the air cylinder (4) is fixedly connected to the middle part of the bottom cross beam of the vertical adjusting frame (3), and the axis of the air cylinder (4), the central line of the bottom cross beam of the vertical adjusting frame (3) and the central line of the top cross beam of the supporting frame (2) are coplanar;
The bottom of the horizontal adjusting mechanism of the horizontal and pitching adjusting mechanism (6) is fixedly connected to the middle position of the top cross beam of the vertical adjusting frame (3), the bottom of the pitching adjusting mechanism of the horizontal and pitching adjusting mechanism (6) is fixedly connected to the top of the horizontal adjusting mechanism, and the top of the pitching adjusting mechanism is fixedly connected to the middle position of the upper part of the metal plugging plate (7);
The whole of the metal plugging plate (7) is of a rectangular plate structure, sealing strips (7-1) are stuck at the peripheral edges of the metal plugging plate (7), pin shaft through holes (7-2) are formed in the middle of the upper part of the metal plugging plate (7), two positive and negative pressure stop valve through holes (7-3) are symmetrically formed in the middle lower part of the metal plugging plate (7), a plurality of screw holes are formed in the peripheries of the pin shaft through holes (7-2) and the two positive and negative pressure stop valve through holes (7-3), two electric control safety valve through holes (7-4) are formed in the middle lower part of the metal plugging plate (7) between the two positive and negative pressure stop valve through holes (7-3), and a square mouth for accommodating the end part of a coupler butting device (13) is formed in the lower part of the metal plugging plate (7); the coupler plugging box (8) is fixedly connected to the square mouth of the metal plugging plate (7) and is positioned on the rear end face of the metal plugging plate (7);
The two positive and negative pressure stop valves (9) penetrate through the two positive and negative pressure stop valve through holes (7-3) in a one-to-one correspondence manner and are fixedly connected with the metal plugging plate (7) through screws, and the two detection needles of the electric control safety valve (10) penetrate through the two electric control safety valve through holes (7-4) in a one-to-one correspondence manner and are fixedly connected with the metal plugging plate (7) through screws;
The horizontal and pitching adjusting mechanism (6) comprises a horizontal adjusting slide rail mechanism (6-1), two screw rod mechanisms (6-2), a ball head mechanism (6-3), a positioning pin (6-4) and a reinforcing plate (6-5); the horizontal adjusting slide rail mechanism (6-1) mainly comprises a slide block and a guide rail which are connected in a sliding way, wherein the guide rail is arranged along the direction of the top cross beam of the vertical adjusting frame (3), and two ends of the guide rail are fixedly connected to the middle position of the top cross beam of the vertical adjusting frame (3); the ball head mechanism (6-3) comprises a ball head (6-3-1) and a ball head base fixedly connected with the bottom of the ball head (6-3-1), and the ball head base is fixedly connected to the middle position of the top of the sliding block of the horizontal adjusting sliding rail mechanism (6-1); the two screw rod mechanisms (6-2) are symmetrically arranged at two sides of the horizontal adjusting slide rail mechanism (6-1), screw end bases of the screw rod mechanisms (6-2) are fixedly connected at two ends of a top cross beam of the vertical adjusting frame (3), and screw rod ends of the screw rod mechanisms (6-2) are propped against two ends of a sliding block of the horizontal adjusting slide rail mechanism (6-1); the center of the reinforcing plate (6-5) is provided with a pin hole (6-5-1), the periphery of the pin hole (6-5-1) of the reinforcing plate (6-5) is provided with a plurality of screw holes, and the reinforcing plate (6-5) is fixedly connected with the position of a pin shaft through hole (7-2) of the metal plugging plate (7) through a screw; the bottom of the front end of the locating pin (6-4) is provided with a ball socket (6-4-1), and after the front end of the locating pin (6-4) sequentially passes through the pin hole (6-5-1) and the pin shaft through hole (7-2), the ball socket (6-4-1) and the ball head (6-3-1) form a spherical pair.
2. The end-of-train plugging device for air tightness test according to claim 1, wherein the length-width dimensions of the coupler plugging box (8) are each 200% of the radial dimensions of the coupler docking device (13); the depth dimension of the coupler plugging box (8) is 120% of the dimension length of the coupler butt joint device (13) relative to the outer suspended exposed part of the end wall (12).
3. The train end plugging device for the air tightness test according to claim 2, wherein the external dimension of the metal plugging plate (7) is 120% of the external dimension of the largest door frame, and the height from the upper edge of the square opening of the metal plugging plate (7) to the ground is the same as the height from the upper end face of the floor tray (14-1) to the ground.
4. A train end closure device for gas tightness tests according to claim 3, characterized in that the metal closure plate (7) is a metal wall plate.
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| CN201811534452.2A CN109540416B (en) | 2018-12-14 | 2018-12-14 | Train end plugging device for air tightness test |
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| CN201811534452.2A CN109540416B (en) | 2018-12-14 | 2018-12-14 | Train end plugging device for air tightness test |
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| CN109540416A CN109540416A (en) | 2019-03-29 |
| CN109540416B true CN109540416B (en) | 2024-05-14 |
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| CN110068424B (en) * | 2019-05-15 | 2021-06-22 | 中车青岛四方机车车辆股份有限公司 | Air-tight door for railway vehicle carriage air-tight test and air-tight test method |
| CN112326149A (en) * | 2020-10-31 | 2021-02-05 | 江苏华洋新思路能源装备股份有限公司 | Large-scale high temperature gas tightness test device |
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