CN211869374U

CN211869374U - Subway door frame lower stop

Info

Publication number: CN211869374U
Application number: CN202020348226.1U
Authority: CN
Inventors: 董志成; 汪峰峰; 汪丽丽
Original assignee: Nanjing Feilin Aircraft Power Co ltd
Current assignee: Nanjing Feilin Aircraft Power Co ltd
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-11-06
Anticipated expiration: 2030-03-19

Abstract

The utility model discloses a subway door frame shelves down uses in track traffic's technical field, and its technical scheme main points include: the door plate comprises a bottom plate, a first boss and a second boss which are arranged on the surface of the bottom plate in parallel, and a step platform which is arranged by clinging to the side wall of the second boss, wherein a limit groove is reserved between the opposite side wall of the first boss and the second boss and the surface of the bottom plate, the lower surface of the door plate is respectively provided with a rubber block corresponding to the limit groove and a step groove corresponding to the step platform, one side of the highest top surface of the step platform is provided with a notch groove, a connecting component is arranged in the notch groove and is connected with the lower surface of the door plate, the side walls of the first boss and the second boss which are positioned in the limit groove are both provided with clamping grooves, the two sides of the rubber block are both provided with sealing blocks; this subway door frame lower rail, with the firm connection of door plant, sealed effectual, safe and reliable.

Description

Subway door frame lower stop

Technical Field

The utility model relates to a track traffic's technical field, in particular to subway door frame lower gear.

Background

With the rapid development of rail transit, the construction of urban subways is in progress fiercely, the subway transport line has high efficiency and accurate time, and is less influenced by environmental factors such as weather, so the subways also become a common vehicle for citizens to go out.

Subway doors can be arranged on the subway carriage at intervals, and sliding rails are arranged in the subway carriage and used for stably opening and closing the subway doors. At the peak of traffic, people are always full of the subway carriage, passengers can cling to the subway door, and great pressure can be applied to the subway door. Because the subway door is the vehicle of high-speed operation, in the high-speed running of subway, wind can be continuous blows in the carriage from the crack of subway door in, and the passenger that is located near the subway door can receive the wind-blowing, has influenced passenger's the experience of taking, consequently must guarantee the holistic gas tightness of automobile body.

However, the door plate of the existing subway door can be detachably connected with the upper stop, the lower stop, the front stop and the rear stop, so that the sealing effect is poor, and the riding experience of passengers is influenced; once the connection structure between the door panel and the upper, lower, front and rear stops is not firm, the door panel is easy to shake between the 4 door stops, and dangerous accidents are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a subway door frame shelves down, its advantage: firm connection between door frame lower gear and the door plant has been realized, and is sealed effectual, safe and reliable, the effectual passenger of having promoted takes experience and feels.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a subway door frame lower rail, includes the bottom plate, set up side by side at the first boss and the second boss of bottom plate surface and hug closely the ladder platform that second boss lateral wall set up, it has the spacing groove to reserve between the relative lateral wall of first boss and second boss and the surface of bottom plate, the lower surface of door plant is equipped with respectively with the corresponding rubber block of spacing groove and with the corresponding ladder groove of ladder platform, the highest top surface one side of ladder platform is equipped with the breach groove, the breach inslot is equipped with coupling assembling and links to each other with the door plant lower surface, the lateral wall that first boss, second boss are located the spacing groove all is equipped with the draw-in groove, the both sides of rubber block all are equipped with sealed piece, the lateral wall of rubber block is equipped with the sealed piece of drive and tightly supports the locking Assembly.

According to the technical scheme, during installation, the rubber block is firstly inserted into the limiting groove; secondly, fixing one side of the bottom wall of the door panel on the surface of the step platform by using a connecting assembly; then utilize two sealed pieces of locking Assembly drive to insert respectively in the draw-in groove of both sides, can fix the block rubber at the spacing inslot, and then with the stable surface of fixing at first boss, second boss respectively of opposite side diapire of door plant, realized the door plant and be connected firmly of bottom plate.

The sealing block and the rubber block are made of rubber materials, and have good effects of shock absorption, buffering and noise reduction, so that the sealing block can be tightly attached to the groove wall of the clamping groove, the rubber block is tightly attached to the groove wall of the limiting groove, and the rubber block can be stably fixed in the limiting groove. And the cooperation of rubber piece and spacing groove plays spacing effect to door plant and bottom plate, can avoid taking place to rock the phenomenon, utilizes the rubber piece, plays the separation effect to the gap between door plant and first boss, the second boss, avoids appearing the phenomenon of leaking out. Adopt the door frame lower rail that above-mentioned structure constitutes, can be connected with the door plant steady, safe and reliable, sealed effectual has promoted passenger's the experience of taking and has felt.

The utility model discloses further set up to: be equipped with a plurality of heavy rooms that fall that are equipped with respectively in first boss, second boss, the ladder platform, two the draw-in groove all is linked together with falling heavy room, fall heavy room and run through with the end wall of first boss, second boss, ladder platform respectively, be located both sides fall heavy room and run through with the lateral wall of first boss, ladder platform respectively, the diapire both sides of door plant all are equipped with and fall heavy room inlay card complex with both sides and inlay the piece of establishing.

Through above-mentioned technical scheme, during the installation, place the door plant in one side of bottom plate earlier for the rubber block slides to spacing inslot, two inlays and establishes the piece and slide respectively to the weight reduction of both sides indoor, and the lower surface of door plant is laminated with the upper surface of first boss, second boss, step platform respectively this moment mutually. The embedded blocks are respectively matched with the weight reduction chambers on the two sides in an embedded mode, the door plate and the bottom plate are connected in an embedded mode, and the phenomenon that the door plate shakes with the bottom plate is avoided.

The utility model discloses further set up to: coupling assembling includes slider, first bolt, second bolt and sets up the piece of supporting at the door plant diapire, the lower surface that the bottom plate deviates from the breach groove is equipped with the spout that supplies the slider to slide, the lateral wall of slider is equipped with first waist type hole, the lateral wall of slider and the both sides that are located first waist type hole all are equipped with the fixed orifices, the tank bottom wall in breach groove is equipped with two relative second waist type holes, the tank bottom wall in breach groove just is located and is equipped with the mounting hole between two second waist type holes, the bottom surface that supports the piece is equipped with respectively with fixed orifices, the corresponding screw hole one of mounting hole and screw hole two, first bolt is by supreme first waist type hole, mounting hole, the screw hole two of inserting in proper order down, the second bolt is by supreme inserting in proper order in fixed orifices, second waist type hole, the screw hole one down.

Through the technical scheme, the supporting block is inserted into the notch groove firstly, the first bolt is inserted into the first kidney-shaped hole, the mounting hole and the threaded hole from bottom to top in sequence, then the second bolt is inserted into the fixing hole, the second kidney-shaped hole and the threaded hole from bottom to top in sequence, and the supporting block can be fixed in the notch groove. The first waist-shaped hole is matched with the first bolt, so that when the door panel needs to be disassembled, the sliding block does not need to be taken out and can be placed in the sliding groove; the setting in second waist type hole is convenient for the slider to slide in the spout to aim at the mounting hole with the second bolt, realized installation, fixed to the door plant.

The utility model discloses further set up to: a cavity is arranged in the rubber block, the locking assembly comprises first electromagnets respectively arranged on the inner walls of two sides of the cavity, a guide block arranged on the bottom wall of the sealing block, a support plate arranged on the side wall of the sealing block and a second electromagnet arranged on the side wall of the support plate, and a guide groove for the guide block to slide is arranged on the inner bottom wall of the cavity;

when the power is on, the first electromagnet and the second electromagnet are attracted; when the power is off, the first electromagnet and the second electromagnet are separated, the two side walls of the rubber block are both provided with sliding openings, and the inner wall of the cavity is provided with an elastic guide part for driving the sealing block to penetrate through the sliding openings and move into the cavity.

According to the technical scheme, firstly, the elastic guide piece is utilized to enable the sealing block to move into the cavity, and at the moment, the rubber block can be inserted into the limiting groove; then to first electro-magnet and second electro-magnet circular telegram again, first electro-magnet and second electro-magnet attract mutually and, and then drive sealed piece and pass the mouth of sliding and tightly support the inner wall at the draw-in groove, sealed piece is the rubber material, has good shock attenuation, give sound insulation, sealed effect, and then can stably fix the rubber piece at spacing inslot, has further strengthened the stability of being connected between door plant and the bottom plate.

The utility model discloses further set up to: the elastic guide piece is a spring, one end of the spring is connected with the sealing block, the other end of the spring is fixed on the inner wall of the cavity, and the stretching direction of the spring is the same as the length direction of the guide groove.

Through above-mentioned technical scheme, when needs insert the spacing inslot with the block rubber, utilize the reset function of spring, drive the guide block and slide in the guide way for in sealed piece removes the cavity, the dismouting is simple, so that the personnel overhaul convenient and practical to the door plant regularly.

The utility model discloses further set up to: the side wall of the rubber block facing the first boss is provided with two opposite clamping blocks, and the sum of the length dimension of the two clamping blocks and the length dimension of the sealing block is equal to the length dimension of the clamping groove.

Through above-mentioned technical scheme, the setting of fixture block can be used to the hole between shutoff sealing block both sides and the draw-in groove, when sliding the block rubber to spacing inslot simultaneously, plays spacing effect, has strengthened the intensity that supports the door plant.

The utility model discloses further set up to: the upper surfaces of the first boss, the second boss and the step platform and the lower surface of the door panel are respectively provided with a rubber sealing gasket, and the rubber sealing gaskets are attached to each other.

Through above-mentioned technical scheme, insert the spacing inslot with the block rubber after, two rubber packing pad are closely laminated, and rubber packing pad has effects such as good sealing, waterproof, shock attenuation, buffering, and then has realized the sealed effect between door plant and the bottom plate, has reduced the passenger near being located the door plant and has received the possibility of blowing, and is sealed effectual, the effectual passenger's of having promoted the experience of taking.

The utility model discloses further set up to: the lower surface of the bottom plate is provided with a groove matched with the slide rail along the length direction.

Through above-mentioned technical scheme, the cooperation of recess and slide rail plays spacing and guide effect to sliding of bottom plate, and the subway door of being convenient for can be stable open and shut.

To sum up, the utility model discloses following beneficial effect has:

1. the sealing block and the rubber block are made of rubber materials, and have good effects of shock absorption, buffering and noise reduction, so that the sealing block can be closely attached to the groove wall of the clamping groove, the rubber block is closely attached to the groove wall of the limiting groove, and the rubber block can be stably fixed in the limiting groove. The rubber block is matched with the limiting groove to limit the door plate and the bottom plate, so that the shaking phenomenon can be avoided, and the rubber block is utilized to block gaps among the door plate, the first boss and the second boss, so that the air leakage phenomenon is avoided;

2. the sealing block is moved to the inside of the cavity by using the elastic guide piece, and the rubber block can be inserted into the limiting groove at the moment; then the first electromagnet and the second electromagnet are electrified, the first electromagnet and the second electromagnet attract each other, and then the sealing block is driven to penetrate through the sliding opening and tightly abut against the inner wall of the clamping groove, the sealing block is made of rubber, good shock absorption, sound insulation and sealing effects are achieved, the rubber block can be stably fixed in the limiting groove, and the stability of connection between the door plate and the bottom plate is further enhanced;

3. the embedded blocks are respectively matched with the weight reduction chambers on the two sides in an embedded mode, the door plate and the bottom plate are connected in an embedded mode, and the phenomenon that the door plate shakes with the bottom plate is avoided.

Drawings

Fig. 1 is an overall sectional structural schematic diagram of the present embodiment.

Fig. 2 is an enlarged schematic structural view for embodying the portion a in fig. 1.

Fig. 3 is a schematic diagram of an exploded structure for embodying the connecting assembly.

Fig. 4 is a schematic sectional structure diagram for embodying the rubber block in the limiting groove.

Fig. 5 is an enlarged schematic structural view for embodying the portion B in fig. 4.

Reference numerals: 1. a base plate; 2. a first boss; 3. a second boss; 4. a stair step; 5. a limiting groove; 6. a rubber block; 7. a stepped groove; 8. a notch groove; 9. a connecting assembly; 91. a slider; 92. a first bolt; 93. a second bolt; 94. a resisting block; 95. a chute; 10. a card slot; 11. a sealing block; 12. a locking assembly; 121. a cavity; 122. a first electromagnet; 123. a guide block; 124. a support plate; 125. a second electromagnet; 126. a sliding port; 127. a guide groove; 13. a weight reduction chamber; 14. embedding a block; 15. a first kidney-shaped hole; 16. a fixing hole; 17. a door panel; 18. a second kidney-shaped hole; 19. mounting holes; 20. a first threaded hole; 21. a second threaded hole; 22. a spring; 23. a clamping block; 24. a rubber gasket; 25. and (4) a groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

a subway door frame lower stop, refer to fig. 1, includes bottom plate 1, and the surface of bottom plate 1 is provided with first boss 2 and second boss 3 side by side, and the surface of bottom plate 1 is equipped with the stair platform 4 and hugs closely one side of second boss 3.

The height dimension of the highest top surface of the stair platform 4 is greater than the height dimension of the second boss 3, the length dimension of the first boss 2 and the second boss 3 and the length dimension of the bottom plate 1, the width dimension of the first boss 2 is less than the length dimension of the second boss 3, the limiting groove 5 is reserved between the first boss 2 and the second boss 3, the lower surface of the door plate 17 is respectively provided with a rubber block 6 corresponding to the limiting groove 5 and a stepped groove 7 corresponding to the stair platform 4, the rubber block 6 and the stepped groove 7 are arranged, and limiting effect is achieved on the door plate 17.

Referring to fig. 1, a plurality of weight reduction chambers 13 are respectively arranged in the first boss 2, the second boss 3 and the step platform 4, the weight reduction chambers 13 respectively penetrate through the end walls of the first boss 2, the second boss 3 and the step platform 4, and the weight reduction chambers 13 are arranged to achieve the effect of reducing weight.

The weight reducing chambers 13 positioned on two sides are respectively penetrated through the side walls of the first bosses 2 and the step platforms 4, the two sides of the lower surface of the door plate 17 are respectively provided with an embedded block 14, and the two embedded blocks 14 are respectively in embedded fit with the weight reducing chambers 13 on two sides, so that the embedded connection between the door plate 17 and the bottom plate 1 is realized.

Referring to fig. 1 and 2, in order to avoid the door panel 17 to rock, one side of the highest top surface of the step table 4 is provided with a notch groove 8, the notch groove 8 is internally provided with a connecting assembly 9 and is connected with the lower surface of the door panel 17, the groove walls of the first boss 2 and the second boss 3 which are positioned in the limiting groove 5 are provided with clamping grooves 10, and the length dimension of the clamping groove 10 positioned on the side wall of the first boss 2 is greater than the length dimension positioned on the side wall of the second boss 3. Sealing blocks 11 are arranged on two sides of the rubber block 6, and locking assemblies 12 for driving the sealing blocks 11 to tightly abut against the clamping grooves 10 are arranged on the side walls of the rubber block 6; the arrangement of the connecting assembly 9 and the locking assembly 12 further enhances the stability of connection between the door panel 17 and the bottom plate 1, is safe and reliable, and can avoid the shaking phenomenon between the door panel 17 and the bottom plate 1.

Rubber block 6 and sealed piece 11 are the rubber material, have good shock attenuation, the buffering, the effect of making an uproar falls, make sealed piece 11 can closely laminate with the cell wall of draw-in groove 10, rubber block 6 closely laminates with the cell wall of spacing groove 5, and then can fix rubber block 6 stably in spacing groove 5, thereby play the separation effect to the gap between door plant 17 and first boss 2, the second boss 3, avoid appearing the phenomenon of leaking out, effectual promotion the customer take experience.

Referring to fig. 1 and 2, the lower surface of door plant 17, the lower surface of block rubber 6, the upper surface of first boss 2, the upper surface of second boss 3 and the upper surface of stair platform 4 all are equipped with rubber packing pad 24, after inserting block rubber 6 in spacing groove 5, two rubber packing pads 24 closely laminate, rubber packing pad 24 has good sealed, waterproof, the shock attenuation, effects such as buffering, and then realized the sealed effect between door plant 17 and the bottom plate 1, the passenger that has reduced to be located near door plant 17 receives the possibility of blowing, it is sealed effectual, passenger's the experience of taking has been improved.

Referring to fig. 3, the lower surface of the bottom plate 1 is provided with a groove 25, the length direction of the groove 25 is the same as that of the bottom plate 1, the groove 25 is matched with a sliding rail in a carriage, and the groove 25 plays a role in limiting and guiding the sliding of the bottom plate 1 and the door plate 17, so that the subway door can be stably opened and closed.

Referring to fig. 3, the connecting assembly 9 includes a sliding block 91, a first bolt 92, an adjusting bolt, and a support block 94 disposed on the bottom wall of the door panel 17, a sliding slot 95 for the sliding block 91 to slide is disposed on the lower surface of the bottom plate 1 away from the notch groove 8, a first kidney-shaped hole 15 is disposed on the side wall of the sliding block 91, fixing holes 16 are disposed on the side wall of the sliding block 91 and on two sides of the first kidney-shaped hole 15, two opposite second kidney-shaped holes 18 are disposed on the bottom wall of the notch groove 8, a mounting hole 19 is disposed between the bottom wall of the notch groove 8 and the two second kidney-shaped holes 18, the support block 94 is matched with the notch groove 8, and a first threaded hole 20 and a second threaded hole 21 corresponding to the fixing holes 16 and the mounting hole 19 are disposed on the.

During installation, the abutting block 94 is firstly inserted into the notch groove 8, then the first bolt 92 is sequentially inserted into the first kidney-shaped hole 15, the mounting hole 19 and the second threaded hole 21 from bottom to top, then the second bolt 93 is sequentially inserted into the fixing hole 16, the second kidney-shaped hole 18 and the first threaded hole 20 from bottom to top, and then the abutting block 94 can be fixed in the notch groove 8. The first kidney-shaped hole 15 is matched with the first bolt 92, so that when the door panel 17 needs to be disassembled, the sliding block 91 does not need to be taken out, and the sliding block 91 can be placed in the sliding groove 95; the second kidney-shaped hole 18 is arranged to facilitate the sliding of the sliding block 91 in the sliding groove 95, so as to align the second bolt 93 with the mounting hole 19, thereby realizing the mounting and fixing of the door panel 17.

Referring to fig. 4 and 5, a cavity 121 is formed in the rubber block 6, and the locking assembly 12 includes a first electromagnet 122 disposed on inner walls of two sides of the cavity 121, a guide block 123 disposed on a bottom wall of the sealing block 11, a support plate 124 disposed on a side wall of the sealing block 11, and a second electromagnet 125 disposed on a side wall of the support plate 124.

Two lateral walls of block rubber 6 all are equipped with the mouth 126 that slides, the inner wall of cavity 121 is equipped with the sealed piece 11 of drive and passes the elastic guide who slides mouthful 126 and remove to cavity 121 in, the inner diapire of cavity 121 is equipped with the guide way 127 that supplies guide block 123 to slide, guide way 127 plays spacing and guide effect to the removal of guide block 123, utilize elastic guide for sealed piece 11 removes inside cavity 121, can insert block rubber 6 in the spacing groove 5 this moment.

Then, the first electromagnet 122 and the second electromagnet 125 are energized, the first electromagnet 122 and the second electromagnet 125 attract each other, and then the sealing block 11 is driven to pass through the sliding opening 126 and tightly abut against the inner wall of the clamping groove 10, in the figure, the sealing block 11 passes through the clamping groove 10 and abuts against the inner wall of the weight reducing chamber 13, and the stability of the rubber block 6 in the limiting groove 5 is enhanced.

The sealing block 11 is made of rubber, has good damping, sound insulation and sealing effects, and can be used for stably fixing the rubber block 6 in the limiting groove 5, so that the stability of connection between the door plate 17 and the bottom plate 1 is further enhanced.

Referring to fig. 4 and 5, the elastic guide is a spring 22, one end of the spring 22 is connected with the sealing block 11, the other end of the spring 22 is fixed on the inner wall of the cavity 121, the extension direction of the spring 22 is the same as the length direction of the guide groove 127, when the rubber block 6 is required to be inserted into the limiting groove 5, the guide block 123 is driven to slide in the guide groove 127 by utilizing the reset function of the spring 22, so that the sealing block 11 is moved into the cavity 121, the assembly and disassembly are simple, a person can overhaul the door panel 17 regularly, and the door is convenient and practical.

Referring to fig. 4 and 5, in order to enhance the stability of the rubber block 6 in the limiting groove 5, two opposite clamping blocks 23 are arranged on the side wall of the rubber block 6 facing the first boss 2, the clamping blocks 23 are arranged on two sides of the sealing block 11, and the sum of the length of the two clamping blocks 23 and the length of the sealing block 11 is equal to the length of the clamping groove 10 with a longer length. The arrangement of the clamping block 23 can be used for plugging the hole between the two sides of the sealing block 11 and the clamping groove 10, and meanwhile, when the rubber block 6 slides into the limiting groove 5, the limiting effect is achieved, and the supporting strength of the door plate 17 is enhanced.

The working process is as follows: utilize spring 22's elasticity, drive guide block 123 and slide in guide way 127 for sealed piece 11 passes and slides mouthful 126 and moves to cavity 121 inside, can slide door plant 17 from one side of bottom plate 1 this moment, make rubber block 6 slide to spacing inslot 5, the piece 14 is established in the inlaying of door plant 17 bottom both sides slides respectively to the weight reduction room 13 of both sides in, support the piece 94 simultaneously and slide to breach inslot 8 in, realized spacing the position of door plant 17. Utilize rubber seal pad 24 for the diapire of door plant 17 closely laminates with the upper surface of first boss 2, second boss 3, ladder platform 4 respectively, avoids appearing the phenomenon of leaking out.

Then, the sliding block 91 is slid, so that the mounting hole 19 is aligned with the second threaded hole 21, at this time, the second bolt 93 can be sequentially inserted into the fixing hole 16, the second kidney-shaped hole 18 and the first threaded hole 20 from bottom to top, and then the first bolt 92 is sequentially inserted into the mounting hole 19 and the second threaded hole 21 from the first kidney-shaped hole 15, so that the abutting block 94 can be stably fixed in the notch groove 8, and the stability of connection between the door panel 17 and the bottom plate 1 is enhanced.

The first electromagnet 122 and the second electromagnet 125 are electrified, so that the first electromagnet 122 and the second electromagnet 125 are attracted, and meanwhile, the sealing block 11 sequentially penetrates through the sliding opening 126 and the clamping groove 10 and tightly abuts against the inner wall of the weight reducing chamber 13, so that the rubber block 6 can be stably fixed in the limiting groove 5, and the stability of connection between the door plate 17 and the bottom plate 1 is further enhanced. Adopt the door frame lower rail that above-mentioned structure constitutes, can be connected with door plant 17 is firm, has good sealed effect simultaneously, the effectual passenger's in the carriage of having promoted the experience of taking.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a subway door frame shelves down, includes door plant (17), its characterized in that: still include bottom plate (1), set up side by side at bottom plate (1) surperficial first boss (2) and second boss (3) and hug closely ladder platform (4) that second boss (3) lateral wall set up, reserve between the relative lateral wall of first boss (2) and second boss (3) and the surface of bottom plate (1) and have spacing groove (5), the lower surface of door plant (17) is equipped with respectively with spacing groove (5) corresponding rubber block (6) and with ladder platform (4) corresponding ladder groove (7), the highest top surface one side of ladder platform (4) is equipped with breach groove (8), it links to each other with door plant (17) lower surface to be equipped with coupling assembling (9) in breach groove (8), the lateral wall that first boss (2), second boss (3) are located spacing groove (5) all is equipped with draw-in groove (10), the both sides of rubber block (6) all are equipped with sealing block (11), the side wall of the rubber block (6) is provided with a locking component (12) which drives the sealing block (11) to tightly abut against the groove wall of the clamping groove (10).

2. The metro door frame bottom rail according to claim 1, wherein: be equipped with a plurality of heavy rooms (13) that fall that are equipped with respectively in first boss (2), second boss (3), the ladder platform (4), two draw-in groove (10) all are linked together with falling heavy room (13), fall heavy room (13) and run through with the end wall of first boss (2), second boss (3), ladder platform (4) respectively, be located both sides fall heavy room (13) and run through with the lateral wall of first boss (2), ladder platform (4) respectively, the diapire both sides of door plant (17) all are equipped with and fall heavy room (13) inlay card complex with both sides and inlay and establish piece (14).

3. The metro door frame bottom rail according to claim 2, wherein: coupling assembling (9) are including slider (91), first bolt (92), second bolt (93) and set up support piece (94) at door plant (17) diapire, the lower surface that bottom plate (1) deviates from breach groove (8) is equipped with spout (95) that supply slider (91) to slide, the lateral wall of slider (91) is equipped with first waist type hole (15), the lateral wall of slider (91) and the both sides that are located first waist type hole (15) all are equipped with fixed orifices (16), the tank bottom wall of breach groove (8) is equipped with two relative second waist type holes (18), the tank bottom wall of breach groove (8) just is located and is equipped with between two second waist type holes (18) mounting hole (19), the bottom surface that supports piece (94) is equipped with respectively with screw hole one (20) and screw hole two (21) corresponding with fixed orifices (16), mounting hole (19), supreme first type hole (15) of inserting in proper order down of first bolt (92), first waist type hole (15) and screw hole two (21), first bolt (92) are supremed down, And the second bolt (93) is sequentially inserted into the fixing hole (16), the second waist-shaped hole (18) and the first threaded hole (20) from bottom to top in the mounting hole (19) and the second threaded hole (21).

4. The metro door frame bottom rail according to claim 1, wherein: a cavity (121) is arranged in the rubber block (6), the locking assembly (12) comprises a first electromagnet (122) respectively arranged on the inner walls of two sides of the cavity (121), a guide block (123) arranged on the bottom wall of the sealing block (11), a support plate (124) arranged on the side wall of the sealing block (11) and a second electromagnet (125) arranged on the side wall of the support plate (124), and a guide groove (127) for the guide block (123) to slide is arranged on the inner bottom wall of the cavity (121);

when the power is on, the first electromagnet (122) and the second electromagnet (125) are attracted; when the power is off, the first electromagnet (122) is separated from the second electromagnet (125), sliding openings (126) are formed in two side walls of the rubber block (6), and the inner wall of the cavity (121) is provided with an elastic guide piece for driving the sealing block (11) to penetrate through the sliding openings (126) and move into the cavity (121).

5. The metro door frame bottom rail according to claim 4, wherein: the elastic guide piece is a spring (22), one end of the spring (22) is connected with the sealing block (11), the other end of the spring (22) is fixed on the inner wall of the cavity (121), and the stretching direction of the spring (22) is the same as the length direction of the guide groove (127).

6. The metro door frame bottom rail according to claim 4, wherein: the rubber block (6) is provided with two opposite clamping blocks (23) towards the side wall of the first boss (2), and the sum of the length of the two clamping blocks (23) and the length of the sealing block (11) is equal to the length of the clamping groove (10).

7. The metro door frame bottom rail according to claim 1, wherein: the upper surface of first boss (2), second boss (3) and stair platform (4) and the lower surface of door plant (17) all are equipped with rubber packing pad (24), two rubber packing pad (24) laminate mutually.

8. The metro door frame bottom rail according to claim 1, wherein: and a groove (25) matched with the sliding rail is arranged on the lower surface of the bottom plate (1) along the length direction of the bottom plate.