CN110863719A

CN110863719A - Emergency unlocking assembly for metro door

Info

Publication number: CN110863719A
Application number: CN201911209038.9A
Authority: CN
Inventors: 陈丙玉; 陈辉; 马生君; 邓书运
Original assignee: BEIJING BODE TRANSPORTATION EQUIPMENT Co Ltd
Current assignee: BEIJING BODE TRANSPORTATION EQUIPMENT Co Ltd
Priority date: 2019-11-30
Filing date: 2019-11-30
Publication date: 2020-03-06

Abstract

The invention relates to an emergency unlocking assembly for a metro door, which is arranged on an installation bottom plate above a door body, wherein a clamping column is arranged on the door body, an electromagnetic unlocking assembly, a pressure reset locking assembly and a rotary latch hook assembly are arranged on the installation bottom plate, the rotary latch hook assembly comprises a hook, a rotating shaft and a bearing seat, the hook is matched and clamped with the clamping column, and the electromagnetic unlocking assembly comprises an electromagnet and a first fixed seat; the rotation axis includes that the first pivot of being connected is rotated with the bearing frame and the cover is established and is slided the second pivot of being connected with first pivot outside first pivot, be provided with branch in the first pivot, the middle part setting of couple deviates from the one end of first pivot in the second pivot, urgent unblock subassembly removes the push rod of couple and card post joint and drive push rod motion towards the drive assembly of second pivot direction motion towards perpendicular to mounting plate direction motion including promoting the couple, first pivot is provided with the slider towards the both sides extension of second pivot one end, set up on the second pivot internal perisporium and extend and slide along second pivot length direction and with the slider cooperation spout. The rotary locking hook component has the advantage of being convenient for unlocking the rotary locking hook component when the electromagnet fails.

Description

Emergency unlocking assembly for metro door

Technical Field

The invention relates to the technical field of rail transit, in particular to an emergency unlocking assembly for a subway door.

Background

Along with the rapid development of high-speed trains and urban rail transit, the quality of the inching sliding plug door is continuously improved, and a plurality of inching sliding plug doors are of double-door structures, so that the inching sliding plug door has the advantages of being rapid in door opening and large in door opening space, and passengers can get on or off the train conveniently.

The traditional Chinese patent with the publication number of CN206844873U discloses a central lock mechanism of a subway door, which comprises a mounting base plate fixed on a door body, wherein an electromagnetic unlocking assembly, a pressure reset locking assembly and a rotary latch hook assembly are fixedly mounted on the mounting base plate, the rotary latch hook assembly comprises a hook, a rotating shaft and a bearing seat, the electromagnetic unlocking assembly comprises an electromagnet and a first fixing seat, the electromagnet is provided with a telescopic connecting rod, the pressure reset locking assembly comprises a damper and a second fixing seat, the damper comprises a telescopic supporting rod, the free end of the telescopic supporting rod is hinged to the middle part or the lower part of the supporting rod, the telescopic connecting rod pulls the supporting rod to drive the rotating shaft to rotate when the electromagnet is powered on, the hook is lifted up along with the rotation of the telescopic supporting rod to unlock, and the telescopic supporting rod.

Because the electro-magnet can appear losing the electricity phenomenon occasionally at the practical in-process, causes the unable unblock of electromagnetism unblock subassembly, brings danger for passenger's safety.

Disclosure of Invention

In view of the shortcomings of the prior art, it is an object of the present invention to provide an emergency unlocking assembly for a subway door, which is advantageous in that it is convenient to unlock a rotating latch hook assembly when an electromagnet fails.

The above object of the present invention is achieved by the following technical solutions:

an emergency unlocking assembly for a metro door is arranged on an installation bottom plate above a door body, a clamping column is arranged on the door body, an electromagnetic unlocking assembly, a pressure reset locking assembly and a rotary locking hook assembly are arranged on the installation bottom plate, the rotary locking hook assembly comprises a hook, a rotating shaft and a bearing seat, the hook is matched and clamped with the clamping column, and the electromagnetic unlocking assembly comprises an electromagnet and a first fixed seat; the rotation axis includes that the first pivot of being connected is rotated with the bearing frame and the cover is established and is slided the second pivot of being connected with first pivot outside first pivot, be provided with branch in the first pivot, the middle part setting of couple deviates from the one end of first pivot in the second pivot, urgent unblock subassembly removes the push rod of couple and card post joint and drive push rod motion towards the drive assembly of second pivot direction motion towards perpendicular to mounting plate direction motion including promoting the couple, first pivot is provided with the slider towards the both sides extension of second pivot one end, set up on the second pivot internal perisporium and extend and slide along second pivot length direction and with the slider cooperation spout.

Through adopting above-mentioned technical scheme, when the unable time of using of electromagnetism unblock subassembly, the staff passes through drive assembly drive push rod towards the motion of couple direction, promote the second pivot and slide outside first pivot, make the couple of being connected with the second pivot towards deviating from the motion of first pivot direction, thereby make the couple along the direction motion of perpendicular to mounting plate, the couple breaks away from the card of card post and establishes, thereby remove the card of the door body and establish the effect, then the staff manually stimulates the door body, open the door body, and easy operation, the staff of being convenient for is after the electro-magnet loses the electricity, promptly open the door body.

The present invention in a preferred example may be further configured to: form the cavity of U type between bearing frame and the mounting plate, push rod one end deviates from couple one side butt with the second pivot, and the other end passes the bearing frame perpendicularly and slides with the bearing frame and is connected, and drive assembly includes the cam and the drive cam pivoted servo motor of drive push rod towards the motion of second pivot direction, and servo motor's output shaft and the coaxial rigid coupling of cam.

Through adopting above-mentioned technical scheme, after the electro-magnet loses the electricity, the staff is through starting servo motor, drive cam forward rotates, the cam rotates the push rod of in-process drive and cam butt towards the couple direction motion, and promote to make the couple along the direction motion of perpendicular to mounting plate, the couple breaks away from to the card of card post and establishes, thereby remove the card to the door body and establish the effect, then the staff manually stimulates the door body, open the door body, and easy operation, the staff of being convenient for promptly opens the door body after the electro-magnet loses the electricity.

The present invention in a preferred example may be further configured to: the mounting base plate is provided with a protective shell for covering the device on the mounting base plate, and the outer wall of the protective shell is provided with a button for driving the servo motor to start.

Through adopting above-mentioned technical scheme, the staff accessible is pressed the button starter motor on the protective housing outer wall, makes things convenient for the staff to operate.

The present invention in a preferred example may be further configured to: the couple can be dismantled with the second pivot and be connected, and the one end that the second pivot deviates from first pivot extends and is provided with the installation lug, and the terminal surface area of installation lug is less than the terminal surface area of second pivot, and the mounting hole with installation lug cooperation joint is seted up at the middle part of couple, and the cross-section of installation lug is regular polygon.

Through adopting above-mentioned technical scheme, when the staff was geting in touch in the installation, with the mounting hole alignment installation lug of couple and with the couple towards the motion of installation lug direction, fix the couple in the second pivot, simple structure to the staff's installation of being convenient for and dismantlement couple.

The present invention in a preferred example may be further configured to: the mounting lug protrudes out of one end of the hook departing from the second rotating shaft, and is in threaded connection with a limiting ring for limiting the hook to be separated from the second rotating shaft.

Through adopting above-mentioned technical scheme, can restrict the couple and break away from the second pivot, and the confinement ring passes through threaded connection with the installation lug, and the staff of being convenient for installs and dismantles the confinement ring.

The present invention in a preferred example may be further configured to: the mounting base plate is provided with a return assembly for driving the push rod to return, the return assembly comprises a first vertical plate vertically fixedly connected to the mounting base plate, a second vertical plate vertically fixedly connected to the first vertical plate and deviating from one end of the mounting base plate, and a compression spring arranged between the second vertical plate and the hook, one end of the compression spring is fixedly connected with the limiting ring, and the other end of the compression spring is fixedly connected with one surface of the second vertical plate facing the hook.

Through adopting above-mentioned technical scheme, return assembly's setting through compression spring's elastic deformation for the push rod moves and return to initial position towards the mounting plate direction, so that use urgent unblock subassembly next time.

The present invention in a preferred example may be further configured to: and a manual unlocking assembly for releasing the clamping of the manual driving hook and the clamping column is arranged in the protective shell.

Through adopting above-mentioned technical scheme, the staff can remove the couple through manual unblock subassembly and establish to the card of card post when servo motor breaks down to the staff of being convenient for opens the door plant.

The present invention in a preferred example may be further configured to: the manual unlocking assembly comprises a first gear coaxially and fixedly connected with the cam, a second gear meshed with the first gear, a connecting shaft coaxially and fixedly connected with the second gear and a driving mechanism for driving the connecting shaft to rotate.

Through adopting above-mentioned technical scheme, when servo motor broke down, the staff rotated through actuating mechanism drive connecting axle, drive the second gear rotation with the coaxial rigid coupling of connecting axle, make the first gear rotation with second gear engagement, thereby make the cam with the coaxial rigid coupling of first gear rotate, drive push rod moves towards the couple direction, make the couple move towards deviating from the mounting plate direction, the couple breaks away from the card with the card post and establishes, remove the restriction to the door plant, the staff of being convenient for manually opens the door plant.

The present invention in a preferred example may be further configured to: the driving mechanism comprises a third gear, a fourth gear, an extension rod and an extension rod clamping connection part, wherein the third gear is separated from the connecting shaft and coaxially fixedly connected with the second gear, the fourth gear is meshed with the third gear, the extension rod is coaxially fixedly connected with the fourth gear, and the extension rod is clamped with the extension rod and used for driving the extension rod to rotate.

Through adopting above-mentioned technical scheme, when servo motor broke down, the staff passes through the twist grip, drive the extension rod and rotate, make fourth gear revolve, drive third gear revolve, and then drive the connecting axle and rotate, drive the second gear with the coaxial rigid coupling of connecting axle and rotate, make the first gear with second gear engagement rotate, thereby make the cam with the coaxial rigid coupling of first gear rotate, drive push rod moves towards the couple direction, make the couple move towards deviating from the mounting plate direction, the couple breaks away from the card with the card post and establishes, remove the restriction to the door plant, the staff of being convenient for manually opens the door plant.

The present invention in a preferred example may be further configured to: one side of the push rod facing the cam is provided with a spherical driving part, one side of the cam, which is farthest away from the axis of the cam, is provided with a groove clamped with the driving part in a matching way, and the cross section of the groove is semicircular.

Through adopting above-mentioned technical scheme, the manual twist grip of staff, in the drive cam motion process, drive the push rod towards the motion of second pivot direction for the couple removes the card when establishing with the card post towards deviating from first pivot motion, compression spring is in by compression state always, and the recess is established to the drive division card on the accessible push rod, makes the push rod keep conflicting with the cam all the time, and the staff when twist grip, can perceive the rotation condition of push rod and cam.

In summary, the invention includes at least one of the following beneficial technical effects:

1. by arranging the rotary lock hook component, the closing state of the door plate can be limited in an auxiliary manner, the door plate is not easy to open abnormally, and the door plate is reliable to use;

2. after the emergency unlocking assembly is arranged, the rotary locking hook assembly is unlocked when the electromagnet fails, so that the use safety of the micro sliding plug door is ensured;

3. after the manual unlocking assembly is arranged, the rotary locking hook assembly is manually unlocked when the servo motor breaks down, and the use safety of the micro-motion sliding plug door is guaranteed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view highlighting the interior of the protective case;

FIG. 3 is a front view highlighting the internal structure of the protective case;

FIG. 4 is a schematic view highlighting the construction of the emergency unlock assembly;

FIG. 5 is a schematic view showing a connection structure of the confinement rings and the mounting bosses;

FIG. 6 is a schematic view highlighting a configuration of a manual unlocking assembly;

fig. 7 is an enlarged schematic view of a portion a in fig. 6.

In the figure, 1, a vehicle compartment; 2. a door body; 21. clamping the column; 3. a protective shell; 31. mounting a bottom plate; 32. a travel switch; 321. a switch body; 322. a hinged lever; 323. a contact; 4. an electromagnetic unlocking assembly; 41. a first fixed seat; 42. an electromagnet; 43. a telescopic connecting rod; 44. a first connector; 5. a pressure reset assembly; 51. a damper; 52. a second fixed seat; 53. a telescopic support rod; 54. a second connector; 6. rotating the latch hook assembly; 61. hooking; 611. mounting holes; 62. a rotating shaft; 621. a first rotating shaft; 6211. a slider; 622. a second rotating shaft; 6221. a chute; 63. a bearing seat; 64. mounting a bump; 641. a threaded post; 65. a confinement ring; 651. a threaded hole; 66. a first vertical plate; 67. a second vertical plate; 671. a connecting ring; 68. a compression spring; 7. a strut; 71. a trigger plate; 711. caulking grooves; 8. an emergency unlocking assembly; 81. a push rod; 811. a drive section; 82. a cam; 821. a groove; 83. a servo motor; 831. a battery; 832. a button; 9. a manual unlocking assembly; 91. a first gear; 92. a second gear; 93. a connecting shaft; 931. a support sleeve; 9311. a limiting ring; 932. a limiting block; 94. a third gear; 95. a fourth gear; 96. an extension rod; 961. a clamping block; 97. a handle; 971. a hand-held lever; 972. a drive rod; 973. a clamping groove.

Detailed Description

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

Referring to fig. 1 and 2, the emergency unlocking assembly for the metro door disclosed by the invention comprises two door bodies 2 which slide relatively, a protective shell 3 is arranged above the door bodies 2, and the protective shell 3 is connected with a carriage 1. The door body 2 is provided with a group of clamping columns 21, and the group of clamping columns 21 are 4 columns which are arranged in parallel and level, are uniformly arranged on the two door bodies 2, and are vertically and fixedly connected with the door bodies 2. A mounting bottom plate 31 is arranged in the protective shell 3, and an electromagnetic unlocking assembly 4, a pressure resetting assembly 5 and a rotary latch hook assembly 6 are arranged on the mounting bottom plate 31. Referring to fig. 4, the rotary latch assembly 6 includes a latch 61, a rotary shaft 62 and a bearing seat 63, wherein the bearing seat 63 is open toward the body of the mounting plate 31 and forms a cavity with the mounting plate 31. The rotating shaft 62 is rotatably connected with one end of the bearing seat 63 departing from the mounting base plate 31, the middle part of the hook 61 is connected with the rotating shaft 62, one side of the rotating shaft 62 departing from the door body 2 is provided with a support rod 7, and the support rod 7 is vertically fixedly connected with the rotating shaft 62.

As shown in fig. 2 and 3, the electromagnetic unlocking assembly 4 includes a first fixing seat 41 fixedly connected to the mounting base plate 31, an electromagnet 42 disposed on the first fixing seat 41, and a telescopic link 43 disposed on the electromagnet 42 and driven by the electromagnet, a first connection head 44 is fixedly connected to a free end of the telescopic link 43, and the first connection head 44 is U-shaped with an opening facing the supporting rod 7 and is hinged to the supporting rod 7. Pressure reset assembly 5 includes attenuator 51 and second fixing base 52, second fixing base 52 and mounting plate 31 fixed connection, attenuator 51 is provided with flexible bracing piece 53 towards the one end of branch 7, the free end of flexible bracing piece 53 is articulated with the middle part of branch 7 or the lower part of branch 7, the free end of flexible bracing piece 53 is equipped with second connector 54, second connector 54 is the same with first connector 53, telescopic link 43 is located the top of flexible bracing piece 53. The electromagnetic unlocking assembly 4 and the pressure reset assembly 5 are positioned on the same side. Be provided with the travel switch 32 that sends out the signal to the opening and shutting of door body 2 on the mounting plate 31, travel switch 32 includes switch body 321, with switch body 321 articulated hinge bar 322 and deviate from the contact 323 that switch body 321 is connected with hinge bar 322, the one end that branch 7 deviates from first pivot 621 is provided with trigger plate 71, trigger plate 71's one end and the perpendicular rigid coupling in branch 7 top, trigger plate 71's the crooked caulking groove 711 that forms in middle part, trigger plate 71 deviates from the one end and the contact 323 butt of branch 7, trigger plate 71 is located same side with electromagnetic unlocking subassembly 4.

When the electromagnet 42 is powered on, the telescopic connecting rod 43 is pulled to move towards the direction departing from the support rod 7, the first connecting head 44 is driven to move towards the direction departing from the support rod 7, the support rod 7 is pulled to move towards the telescopic connecting rod 43, the rotating shaft 62 is rotated, the hook 61 connected with the rotating shaft 62 is rotated by a certain angle, the hook 61 and the clamping column 21 are separated from clamping, and the clamping effect on the door body 2 is relieved; in the process that the supporting rod 7 moves towards the direction of the telescopic connecting rod 43, the triggering plate 71 fixedly connected with the top of the supporting rod 7 is driven to move towards the direction of the telescopic connecting rod 43, so that the contact 323 abutted against the triggering plate 71 is located in the embedded groove 711, and the switch body 321 sends a signal for opening the door body 2 to drive the door body 2 to be opened. When the rod 7 moves towards the telescopic link 43, the second connector 54 is pulled to move towards the telescopic link 43, so that the telescopic support rod 53 on the damper 51 moves away from the rod 7. After the electromagnet 42 is powered off, under the action of the damper 51, the telescopic supporting rod 53 pushes the supporting rod 7 to move towards the direction departing from the telescopic supporting rod 7, so that the supporting rod 7 returns to the initial position, the triggering plate 71 is driven to move towards the supporting rod 7 in the rotating process of the supporting rod 7, the contact 323 positioned in the embedded groove 711 is separated from the embedded groove 711 and returns to the position abutted to the triggering plate 71, and the switch body 321 sends a signal to drive the door body 2 to be closed; meanwhile, the rotating shaft 62 rotates reversely, so that the hook 61 connected with the rotating shaft 62 rotates reversely by a certain angle to clamp the clamping column 21, the door body 2 is clamped, the possibility that the door body 2 is opened outwards due to external force or human factors is reduced, and the safety of passengers in the carriage 1 is improved.

As shown in fig. 3 and 4, the rotating shaft 62 includes a first rotating shaft 621 rotatably connected to the bearing seat 63 and a second rotating shaft 622 sleeved on the periphery of one end of the first rotating shaft 621 away from the bearing seat 63, and referring to fig. 5, two sides of the end of the first rotating shaft 621 away from the bearing seat 63 extend and are fixedly connected to a sliding block 6211, the second rotating shaft 622 is provided with a sliding groove 6221 sliding in cooperation with the sliding block 6211, and the sliding groove 6221 extends along the length direction of the second rotating shaft 622 and does not penetrate through the second rotating shaft 622. The support rod 7 is arranged on one side of the first rotating shaft 621 departing from the door body 2, and the hook 61 is arranged on one end of the second rotating shaft 622 departing from the first rotating shaft 621. The hook 61 is detachably connected with the second rotating shaft 622, an installation bump 64 is fixedly connected to one end of the second rotating shaft 622, which is away from the first rotating shaft 621, the cross section of the installation bump 64 is regular hexagon, and an installation hole 611, which is in fit and clamping connection with the installation bump 64, is formed in the middle of the hook 61. When the worker installs the hook 61, the installation hole 611 is aligned with the installation bump 64, and the hook 61 is pushed towards the direction of the second rotating shaft 622, so that the hook 61 is clamped on the installation bump 64, the installation bump 64 protrudes out of one surface of the hook 61 departing from the second rotating shaft 622, a limit ring 65 for limiting the hook 61 to be separated from the installation bump 64 is arranged on one surface of the installation bump 64 protruding out of the hook 61, a threaded column 641 is arranged on one surface of the installation bump 64 protruding out of the hook 61, a threaded hole 651 in threaded fit with the threaded column 641 is arranged in the limit ring 65, and the possibility that the hook 61 is separated from the installation bump 64 is reduced by rotating the limit ring 65 to the outside of the installation bump 64.

In actual use, the electromagnet 42 occasionally loses power, so that the lock hook cannot be separated from the clamping column 21, the door body 2 cannot be unlocked, and the safety of passengers is dangerous. For this purpose, an emergency unlocking assembly 8 is provided for unlocking the latch hook in the event of a malfunction of the electromagnet 42.

As shown in fig. 2 and fig. 3, the emergency unlocking assembly 8 includes a push rod 81 for pushing the second rotating shaft 622 to slide toward the hook 61, and a driving assembly disposed at an end of the push rod 81 facing away from the second rotating shaft 622 for driving the second rotating shaft 622 to move. With reference to fig. 4, the driving assembly includes a cam 82 for pushing the second rotating shaft 622 to move toward the direction of the hook 61 and a servo motor 83 for driving the cam 82 to move, an output shaft of the servo motor 83 is coaxially and fixedly connected with the cam 82, the servo motor 83 is erected on the mounting base plate 31, one end of the push rod 81 is abutted to one end of the second rotating shaft 622 away from the hook 61, the other end of the push rod passes through the bearing seat 63 and is provided with a spherical driving portion 811, the most proximal end of the cam 82 away from the axis of the cam 82 is abutted to the driving portion 811, a groove 821 for clamping the driving portion 811 is provided at the most distal end of the cam 82 away from the axis of the cam 82. Referring to fig. 4 and 5, a first vertical plate 66 is disposed on the mounting base plate 31, the first vertical plate 66 is vertically and fixedly connected to the mounting base plate 31 and is located below the bearing seat 63, a second vertical plate 67 parallel to the mounting base plate 31 is vertically and fixedly connected to an end of the first vertical plate 66 away from the mounting base plate 31, the second vertical plate 67 is located on a side of the limiting ring 65 away from the hook 61 and has a gap with the limiting ring 65, a connecting ring 671 is vertically and fixedly connected to a side of the second vertical plate 67 facing the limiting ring 65, a compression spring 68 is disposed on an end of the limiting ring 65 away from the second rotating shaft 622, one end of the compression spring 68 is fixedly connected to the limiting ring 65, the other end is sleeved on the periphery of the connecting ring 671 and is fixedly connected to the second vertical plate 67, the limiting ring 65 and the connecting ring 671 are located on the same straight line, and a gap for the hook 61 to move to separate from the, a button 832 for driving the servo motor 83 to open and close is arranged on the outer wall of the protective shell 3.

When the electromagnet 42 is powered off, a worker starts the servo motor 83 through the button 832, drives the cam 82 to rotate in the forward direction, drives the push rod 81 abutted to the cam 82 to move towards the direction of the second rotating shaft 622 in the rotating process of the cam 82, and pushes the second rotating shaft 622 to slide outside the first rotating shaft 621, so that the hook 61 connected with the second rotating shaft 622 moves towards the direction departing from the first rotating shaft 621, the hook 61 moves in the direction perpendicular to the installation bottom plate 31, the hook 61 is separated from the clamping of the clamping column 21, the clamping effect on the door body 2 is relieved, then the worker manually pulls the door body 2 to open the door body 2, the operation is simple, and the worker can open the door body 2 emergently after the electromagnet 42 is powered off; the hook 61 presses the compression spring 68 in the moving process, after the door body 2 is opened, a worker can drive the servo motor 83 to rotate reversely, the cam 82 is driven to rotate reversely, the cam 82 is separated from the abutting joint with the push rod 81 in the reverse rotating process, at the moment, the compression spring 68 recovers elasticity, the hook 61 is driven to move towards the installation bottom plate 31, the second rotating shaft 622 is driven to move towards the installation bottom plate 31, the push rod 81 is driven to move towards the installation bottom plate 31 and return to the initial position, and the emergency unlocking assembly 8 is used next time.

As shown in fig. 2 and 3, since the battery 831 of the servo motor 83 is disposed in the protective case 3, a worker cannot check the use condition of the battery 831 in time, and in order to avoid opening and closing the door 2 when the battery 831 of the servo motor 83 is dead or the servo motor 83 is damaged, the manual unlocking assembly 9 is disposed. With reference to fig. 4 and 5, the manual unlocking assembly 9 includes a first gear 91 coaxially fixed to the cam 82, a second gear 92 engaged with the first gear 91, a connecting shaft 93 coaxially fixed to the second gear 92 and extending in a direction away from the first gear 91, and a driving mechanism for driving the connecting shaft 93 to rotate. One end of the connecting shaft 93, which is away from the second gear 92, penetrates through the bearing seat 63, extends in the direction away from the door body 2 and is rotatably connected with the bearing seat 63, a supporting sleeve 931 is sleeved on the connecting shaft 93, and the supporting sleeve 931 is vertically and fixedly connected with the mounting base plate 31, so that the connecting shaft 93 is limited to slide on the supporting sleeve 931.

As shown in fig. 4 and 6, the driving mechanism includes a third gear 94 coaxially fixedly connected to one end of the connecting shaft 93 away from the second gear 92, a fourth gear 95 engaged with the third gear 94, an extension rod 96 coaxially fixedly connected to the fourth gear 95, and a handle 97 for driving the extension rod 96 to rotate, the extension rod 96 is perpendicular to the mounting base plate 31, as shown in fig. 7, a clamping block 961 is extended from one end of the extension rod 96 away from the fourth gear 95, a longitudinal section of the clamping block 961 is in a regular six-way deformation, the handle 97 is in a T shape, and includes a hand-held rod 971 and a driving rod 972 vertically fixedly connected to a middle portion of the hand-held rod 971, a clamping groove 973 cooperatively clamped with the clamping block 961 is provided at one end of the driving rod 972 away from the hand-held rod 971, and a through hole (see fig. 1) for the driving rod 972 to pass through the protective shell 3.

During the use, the staff inserts the actuating lever 972 of handle 97 into the through-hole, and make extension rod 96 and handle 97 joint, rotate handle 97, thereby drive extension rod 96 and rotate, make the fourth gear 95 with the coaxial rigid coupling of extension rod 96 rotate, drive the third gear 94 with fourth gear 95 meshing and rotate, drive connecting axle 93 and drive, thereby drive the second gear 92 that is located the tip of connecting axle 93 and rotate, make the first gear 91 with second gear 92 meshing rotate, thereby drive cam 82 and rotate, promote push rod 81 and move towards second pivot 622, and promote second pivot 622 and slide outside first pivot 621, make couple 61 connected with second pivot 622 move towards deviating from first pivot 621 direction, thereby make couple 61 along the direction motion of perpendicular to mounting plate 31, couple 61 breaks away from the card of card post 21, thereby relieve the card of the effect to the door body 2, then the staff pulls door body 2 manually, opens door body 2, easy operation, and the staff of being convenient for promptly opens and shuts door body 2 under the condition that the motor does not have the electricity or damage.

The implementation principle of the embodiment is as follows: after electro-magnet 42 loses the electricity, the staff passes through button 832 and starts servo motor 83, drive cam 82 forward rotation, cam 82 rotates the push rod 81 of in-process drive and cam 82 butt and moves towards second pivot 622 direction, and promote second pivot 622 and slide outside first pivot 621, make the couple 61 of being connected with second pivot 622 move towards deviating from first pivot 621 direction, thereby make couple 61 along the direction motion of perpendicular to mounting plate 31, couple 61 breaks away from the card of card post 21 and establishes, thereby remove the card of door body 2 and establish the effect, then the staff manually pulls door body 2, open door body 2, and the operation is simple, the staff of being convenient for promptly opens door body 2 after electro-magnet 42 loses the electricity.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides an urgent unblock subassembly for subway door, set up on mounting plate (31) of a body (2) top, be provided with card post (21) on the body (2), be provided with electromagnetism unblock subassembly (4) on mounting plate (31), pressure reset locking subassembly (5) and rotatory latch hook subassembly (6), rotatory latch hook subassembly (6) include with card post (21) join in marriage couple (61) that the card established, rotation axis (62) and bearing frame (63), electromagnetism unblock subassembly (4) include electro-magnet (42) and first fixing base (41), its characterized in that: the rotating shaft (62) comprises a first rotating shaft (621) rotationally connected with the bearing seat (63) and a second rotating shaft (622) sleeved outside the first rotating shaft (621) and connected with the first rotating shaft (621) in a sliding manner, be provided with branch (7) on first pivot (621), the middle part setting of couple (61) deviates from the one end of first pivot (621) in second pivot (622), urgent unblock subassembly (8) are including promoting couple (61) and remove push rod (81) and drive push rod (81) motion towards the motion of perpendicular to mounting plate (31) direction and the drive assembly of second pivot (622) direction motion of couple (61) and card post (21) joint, first pivot (621) extend towards the both sides of second pivot (622) one end and are provided with slider (6211), seted up spout (6221) that extend and slide with slider (6211) cooperation along second pivot (622) length direction on the second pivot (622) internal perisporium.

2. An emergency unlocking assembly for a metro door according to claim 1, characterized in that: form the cavity of U type between bearing frame (63) and mounting plate (31), push rod (81) one end deviates from couple (61) one side butt with second pivot (622), the other end passes bearing frame (63) perpendicularly and slides with bearing frame (63) and is connected, drive assembly includes drive push rod (81) towards cam (82) and drive cam (82) pivoted servo motor (83) of second pivot (622) direction motion, the output shaft and the coaxial rigid coupling of cam (82) of servo motor (83).

3. An emergency unlocking assembly for a metro door according to claim 2, characterized in that: the installation bottom plate (31) is provided with a protection shell (3) which covers and seals a device on the installation bottom plate (31), and the outer wall of the protection shell (3) is provided with a button (832) which drives the servo motor (83) to start.

4. An emergency unlocking assembly for a metro door according to claim 3, characterized in that: couple (61) can be dismantled with second pivot (622) and be connected, and second pivot (622) deviates from the one end extension of first pivot (621) and is provided with installation lug (64), and the terminal surface area of installation lug (64) is less than the terminal surface area of second pivot (622), and mounting hole (611) with installation lug (64) cooperation joint is seted up at the middle part of couple (61), and the cross-section of installation lug (64) is regular polygon.

5. An emergency unlocking assembly for a metro door according to claim 4, characterized in that: the mounting lug (64) protrudes out of one end of the hook (61) departing from the second rotating shaft (622) and is in threaded connection with a limiting ring (65) which limits the hook (61) to be separated from the second rotating shaft (622).

6. An emergency unlocking assembly for a metro door according to claim 5, characterized in that: mounting plate (31) are provided with the return subassembly of drive push rod (81) return, and the return subassembly includes first riser (66) of perpendicular rigid coupling on mounting plate (31), perpendicular rigid coupling deviates from mounting plate (31) one and serves second riser (67) and set up compression spring (68) between second riser (67) and couple (61) at first riser (66), compression spring (68) one end and spacing ring (65) rigid coupling, the one side rigid coupling of the other end and second riser (67) orientation couple (61).

7. An emergency unlocking assembly for a metro door according to claim 2, characterized in that: and a manual unlocking assembly (9) for releasing the clamping of the manual driving hook (61) and the clamping column (21) is arranged in the protective shell (3).

8. An emergency unlocking assembly for a metro door according to claim 7, characterized in that: the manual unlocking assembly (9) comprises a first gear (91) coaxially and fixedly connected with the cam (82), a second gear (92) meshed with the first gear (91), a connecting shaft (93) coaxially and fixedly connected with the second gear (92) and a driving mechanism for driving the connecting shaft (93) to rotate.

9. An emergency unlocking assembly for a metro door according to claim 8, characterized in that: the driving mechanism comprises a third gear (94) which is separated from the connecting shaft (93) and coaxially fixedly connected with the second gear (92), a fourth gear (95) meshed with the third gear (94), an extension rod (96) coaxially fixedly connected with the fourth gear (95) and a handle (97) which is clamped with the extension rod (96) and used for driving the extension rod (96) to rotate.

10. An emergency unlocking assembly for a metro door according to claim 9, characterized in that: one side of the push rod (81) facing the cam (82) is provided with a spherical driving part (811), one side of the cam (82) farthest from the axis of the cam (82) is provided with a groove (821) clamped with the driving part (811) in a matching way, and the section of the groove (821) is semicircular.