CN217972162U - Door knife device - Google Patents

Abstract

The utility model discloses a door knife device, a left knife arm, a right knife arm, a swing arm and a lock hook which are arranged on a door knife bottom plate, wherein the swing arm is rotationally connected with the door knife bottom plate and the left knife arm and the right knife arm, the lock hook is positioned at the side part of the door knife bottom plate and rotationally connected with the door knife bottom plate, and the lock hook is matched with a fixed hook on a car door; the door knife device further comprises a swing rod and a traction rope, one end of the traction rope is connected with the lock hook, the other end of the traction rope is connected with the door knife bottom plate, one end of the swing rod is rotatably connected with the swing arm, and the other end of the swing rod is slidably connected with the traction rope. The utility model discloses a door sword device, through the pendulum rod with the swing arm linkage, with the setting of the haulage rope of latch hook linkage, satisfy various requirements of taking off a working condition in the national standard, and simplified door sword device's structure, improved security and the reliability of using.

Description

Door knife device

Technical Field

The utility model relates to an elevator technical field, concretely relates to door sword device of elevator.

Background

In order to meet the requirements of the new national standard GB7588.1/.2 on various door-opening working conditions of flat floors and non-flat floors, the number of knife arm floating connecting rods or shifting pieces is increased for the door knives of some elevator car door locks in the prior art, the number of the connecting rods is at least three, even the number of bearings is more than twenty, and meanwhile, parts such as springs and the like are also increased, so that the structure of the door knife of the elevator car door lock is more and more complicated, and the reliability and adjustability of the door knife are greatly reduced. In addition, other risks are brought while the springs are added, for example, when the elevator is in flat-layer rescue, after the elevator is powered off, the door knife of the car door lock can be opened or contracted due to the elastic force of the springs, and when the elevator moves to a position close to a flat layer, the door knife arm can collide with a door lock ball of the landing door lock, so that parts are damaged.

SUMMERY OF THE UTILITY MODEL

In view of this, in order to overcome prior art's defect, the utility model provides an elevator door sword device has simplified the structure of door sword device when satisfying national standard to various operating modes of taking off a door, has improved the reliability of its use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a door knife device comprises a door knife bottom plate, a left knife arm, a right knife arm, a swing arm and a lock hook, wherein the left knife arm, the right knife arm, the swing arm and the lock hook are arranged on the door knife bottom plate;

the door knife device further comprises a swing rod and a traction rope, one end of the traction rope is connected with the lock hook, and the other end of the traction rope is connected with the door knife bottom plate; one end of the swing rod is rotatably connected with the swing arm, and the other end of the swing rod is slidably connected with the traction rope. The left knife arm and/or the right knife arm are used for driving the swing arm to rotate or the swing arm is used for driving the left knife arm and/or the right knife arm to float.

Through improving the connecting rod of a plurality of complicacies connections among the door sword among the prior art into an pendulum rod to set up and pendulum rod and latch hook matched with haulage rope, can drive the swing arm through the unsteady swing arm rotation that drives of left knife arm or right knife arm when taking off the door, and then drive the pendulum rod and rotate, the pendulum rod rotates and can upwards collude the haulage rope, drives the latch hook and upwards lifts up, makes the unblock of door sword device, can take off the door. And the acting force of the floating left knife arm or the floating right knife arm comes from the acting force in the horizontal direction which is applied by the fact that the gate ball touches the left knife arm or the right knife arm when the landing door or the car door is taken off. Specifically, when the elevator moved to the flat bed position, because left sword arm and right sword arm press from both sides two gate balls or two gate balls are located the length range of left sword arm and right sword arm, at this moment, when the people in the car took off the layer door, the gate ball on the left side can touch left sword arm and apply and make it float for left sword arm horizontal direction's effort, the unsteady swing arm that can drive of left sword arm rotates, and then drive the pendulum rod and rotate, the pendulum rod rotates and can upwards collude the haulage rope, finally drive the latch hook and lift, realize breaking away from of latch hook and fixed hook, the unblock of door sword device. When maintenance personnel take off the door outside the hall, the door ball on the right can touch the right knife arm and apply the acting force for the horizontal direction of the right knife arm to enable the right knife arm to float, the floating of the right knife arm can also drive the swing arm to rotate, and then the swing rod is driven to rotate, the swing rod can upwards hook the traction rope to finally drive the lock hook to lift, so that the separation of the lock hook and the fixed hook is realized, and the door knife device can be unlocked. And when the elevator moved to non-flat bed position, because left sword arm and right sword arm all break away from with two croquet on the layer door mutually, consequently no matter take off a layer door or sedan-chair door, because left sword arm or right sword arm all can not touch the croquet, lead to the croquet can't apply horizontal direction's effort to left sword arm or right sword arm, so left sword arm or right sword arm can not float, the latch hook still keeps the state with the fixed hook locking.

According to some preferred implementation aspects of the utility model, the swing arm is provided with two, the swing arm includes swing arm and lower swing arm, go up the upper end of swing arm with the lower tip of pendulum rod rotates to be connected. The utility model discloses an in some embodiments, the both sides portion of going up the swing arm rotates with left knife arm and right knife arm respectively through two last swing arm pivots to be connected, and the both sides portion of lower swing arm rotates with left knife arm and right knife arm respectively through two lower swing arm pivots to be connected, and the last swing arm pivot and the lower swing arm pivot that are located the homonymy are located same vertical direction. The left tool arm and the right tool arm are hinged with the upper swing arm and the lower swing arm through two upper swing arm rotating shafts and two lower swing arm rotating shafts to form a parallelogram.

According to some preferred implementation aspects of the utility model, the pendulum rod is kept away from the one end of swing arm is provided with the gyro wheel, offer the confession on the gyro wheel the gliding race of haulage rope, the race with the haulage rope is located the coplanar. The idler wheel is located below the traction rope, and the traction rope can be hooked upwards when the swing rod rotates upwards.

According to some preferred implementation aspects of the utility model, be provided with the fixed block on the latch hook, the one end of haulage rope with the fixed block is connected.

According to some preferred aspects of the present invention, the slide comprises a slider and a guide rod, wherein the slider is slidably connected to the guide rod along a length direction of the guide rod; the swing rod is rotatably connected with the sliding block.

According to some preferable implementation aspects of the utility model, the portal jib crane further comprises a rotating rod and a fixed plate, wherein the rotating rod is rotatably connected with the portal jib bottom plate, and the fixed plate is fixedly connected with the portal jib hanging plate; the dwang is kept away from the notch has been seted up to the one end of fixed plate, the dwang is close to the one end of fixed plate is provided with the extension, the dwang has been seted up the tip of notch is located the surface of door sword bottom plate with between the internal surface of slider.

According to some preferred embodiments of the present invention, the sliding block is provided with a pin shaft penetrating through the thickness direction of the sliding block, the pin shaft includes a first shaft portion and a second shaft portion, the first shaft portion is fixedly connected with a belt fixing member on a synchronous belt, and the synchronous belt is used for driving the sliding block to slide along the length direction of the guide bar; the second shaft portion is fitted with the notch. The utility model discloses an in some embodiments, round pin axle on the slider both with the notch joint of dwang, again with the belt mounting fixed connection on the hold-in range, be favorable to the atress of round pin axle better, when the notch still not with the joint round pin axle time, along with the transmission of ambulation area, can drive the round pin axle and remove, and then drive the slider and take place to remove along the length direction of guide bar. In addition, when the slider moves to the notch and is clamped with the pin shaft, the slider cannot continuously move on the guide rod, and the synchronous belt at the moment is used for driving the door knife device and the door machine hanging plate to move along the length direction of the door machine guide rail.

According to some preferred embodiments of the present invention, when the slider is located at an end of the guide rod away from the fixing plate, the extension portion is away from the fixing plate or the extension portion is away from the fixing plate in contact with the fixing plate, and the notch is engaged with the second shaft portion; when the slide block is positioned at one end of the guide rod close to the fixed plate, the extending part is abutted against the fixed plate, and the notch is separated from the second shaft part. Specifically, when the elevator closed the door and targets in place, the slider was located the rightmost of guide bar, was located the one end that the guide bar is close to the fixed plate promptly, the extension and the fixed plate butt of dwang this moment, the notch of dwang second shaft portion of joint not, and rotate the pendulum rod whereabouts of being connected with the slider, the haulage rope has not been colluded, latch hook block this moment in the fixed hook, the door sword is locked, and the elevator can't open the door. When the elevator is opened from a door closing state (the car is positioned on a flat layer), the transmission of the synchronous belt can drive the sliding block to move from the right side to the left side of the guide rod until the notch is clamped with the second shaft part, at the moment, the sliding block does not move any more, and in the process that the sliding block moves from the right side to the left side, the swinging rod can be driven to rotate, so that the swinging rod upwards hooks the traction rope, the lock hook is upwards lifted, the lock hook is separated from the fixed hook, and the door knife is unlocked; the rotation of the swing rod can also drive the upper swing arm to rotate, and then the left knife arm and the right knife arm are driven to move towards the mutually approaching direction until the left knife arm and the right knife arm clamp the door ball, so that the layer door lock is unlocked. Subsequently, under the unable gliding state that continues of slider, the hold-in range can drive whole door sword device and move left, and at this in-process, because left sword arm and right sword arm are pressed from both sides tightly with the gate ball, layer door and sedan-chair door can open gradually simultaneously until the door is opened and target in place. When the elevator was closed the door by the state of opening the door gradually, drive whole door sword device through the transmission of hold-in range earlier and remove right gradually, the slider still is in the joint state with the notch this moment, when the extension that door sword device removed to the dwang touches the fixed plate and when looks butt with it, the tip that the notch was seted up to the dwang can upwards lift make the notch can't continue with second shaft portion joint, at this moment, under the continuous transmission effect of hold-in range, can drive the slider and remove to the right side by the left side of guide bar, the removal of slider can drive the pendulum rod and rotate, the tip that makes pendulum rod and haulage rope be connected falls gradually, thereby make the latch hook fall and lock with the fixed hook, the elevator is closed the door and targets in place. The swing rod can also drive the upper swing arm to rotate, and then the left knife arm and the right knife arm are driven to move towards the direction away from each other until the left knife arm and the right knife arm release the gate ball. The elevator car can now be moved upwards or downwards.

According to some preferred implementation aspects of the utility model, the slider is close to the upper end of one side of fixed plate seted up with dwang matched with breach. The breach set up for the convenience of the placing of pendulum rod, especially when the notch of dwang and the second axle portion joint of round pin axle, if do not have the breach, because the height of slider itself can make the dwang offer the tip perk that makes progress of notch, lead to the notch to be difficult to with the effective joint of second axle portion.

According to some preferred implementation aspects of the utility model, be provided with first pivot between last swing arm and the door sword bottom plate, be provided with the second pivot between lower swing arm and the door sword bottom plate, it passes through to go up the swing arm first pivot with the door sword bottom plate rotates to be connected, lower swing arm passes through the second pivot with the door sword bottom plate rotates to be connected, first pivot and second pivot are located same vertical direction.

Compared with the prior art, the utility model discloses an useful part lies in: the utility model discloses a door sword device, through the pendulum rod with the swing arm linkage, with the setting of the haulage rope of latch hook linkage, when taking off the door, the unsteady drive swing arm through left knife arm or right knife arm rotates, and then drives the pendulum rod and rotate, and the pendulum rod rotates can upwards collude the haulage rope, drives the latch hook and upwards lifts up to make door sword device unblock, satisfy various requirements of taking off a working condition in the national standard, and simplified door sword device's structure, improved security and the reliability of using.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.

Fig. 1 is a schematic structural view of a door vane device of an elevator in a non-leveling position with a door closed in place according to a preferred embodiment of the present invention;

fig. 2 is a schematic structural view of the door vane device when the elevator door is closed in place and in the leveling position in the preferred embodiment of the present invention;

fig. 3 is a schematic structural diagram of the door vane device in the flat position when the elevator door is opened in place in the preferred embodiment of the invention;

fig. 4 is a schematic structural view of a door vane device in the preferred embodiment of the present invention when the elevator is closed in place and the rescue workers take off the door through the rescue rope;

FIG. 5 is a schematic structural diagram of a slider according to a preferred embodiment of the present invention;

fig. 6 is a schematic structural diagram of the latch hook in the preferred embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a swing link according to a preferred embodiment of the present invention;

wherein: the device comprises a door knife bottom plate-1, an unlocking matching piece-11, an unlocking rope-12, a left knife arm-21, a right knife arm-22, an upper swing arm-31, an upper swing arm rotating shaft-311, a lower swing arm-32, a lower swing arm rotating shaft-321, a first rotating shaft-33, a second rotating shaft-34, a lock hook-4, a fixed block-41, a lock hook rotating shaft-42, a counterweight plate-43, a switch component-44, a lock groove-45, a swing rod-5, a roller-51, a first swing rod rotating shaft-52, a second swing rod rotating shaft-53, a traction rope-6, a slide block-7, a first shaft part-71, a second shaft part-72, a notch-73, a guide rod-8, a rotating rod-9, a notch-91, an extending part-92, a rotating rod rotating shaft-93, a fixed plate-10 and a door ball-100.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Referring to fig. 1 to 7, the door vane device of the present embodiment includes a door vane bottom plate 1, and a left vane arm 21, a right vane arm 22, an upper swing arm 31, a lower swing arm 32, a latch hook 4, a swing link 5, a pulling rope 6, a slider 7, a guide rod 8, a rotating rod 9, and a fixing plate 10 fixedly connected to the door vane hanging plate on the door vane bottom plate 1. The upper swing arm 31 is rotatably connected with the door vane base plate 1 through a first rotating shaft 33, the lower swing arm 32 is rotatably connected with the door vane base plate 1 through a second rotating shaft 34, and the first rotating shaft 33 and the second rotating shaft 34 are located in the same vertical direction. The two side parts of the upper swing arm 31 are respectively connected with the left knife arm 21 and the right knife arm 22 in a rotating way through two upper swing arm rotating shafts 311, the two side parts of the lower swing arm 32 are respectively connected with the left knife arm 21 and the right knife arm 22 in a rotating way through two lower swing arm rotating shafts 321, and the upper swing arm rotating shaft 311 and the lower swing arm rotating shaft 321 which are positioned on the same side are positioned on the same vertical direction. The left knife arm 21 and the right knife arm 22 are hinged with the upper swing arm 31 and the lower swing arm 32 through two upper swing arm rotating shafts 311 and two lower swing arm rotating shafts 321 to form a parallelogram.

Further, referring to fig. 1 to 4 and 7, the left lower end of the swing rod 5 is rotatably connected to the upper swing arm 31 through a first swing rod rotating shaft 52, the left upper end of the swing rod 5 is rotatably connected to the slider 7 through a second swing rod rotating shaft 53, the right end of the swing rod 5 is provided with a roller 51, the roller 51 is provided with a wheel groove, and the traction rope 6 is slidably connected to the right end of the swing rod 5 through the wheel groove on the roller 51.

Further, referring to fig. 1 to 4 and 6, the latch hook 4 is rotatably connected to a side of the door vane base plate 1 through a latch hook rotating shaft 42, and locking and unlocking of the door vane device are achieved through cooperation of the latch hook 4 and a fixing hook (not shown) located at the right side of the latch hook 4. The locking hook 4 is provided with a fixed block 41 and a switch assembly 44, and the right end of the locking hook 4 is further provided with a counterweight plate 43. One end of the traction rope 6 is connected with the fixing block 41, the other end of the traction rope 6 is connected with the door vane bottom plate 1, and the length of the traction rope 6 is fixed. When the door is taken off, the gate ball 100 touches the left knife arm 21 or the right knife arm 22 and applies a horizontal acting force to the left knife arm 21 or the right knife arm 22, so that the left knife arm 21 or the right knife arm 22 floats, the upper swing arm 31 and the lower swing arm 32 are driven to rotate, the swing rod 5 is driven to rotate, the pull rope 6 can be hooked upwards by the rotation of the swing rod 5, the lock hook 4 is driven to be lifted upwards, the gate knife device is unlocked, and the door can be taken off. The switch assembly 44 is used for verifying whether the locking between the locking hook 4 and the fixed hook is in place, and the switch assembly 44 is electrified only when the locking between the locking hook 4 and the fixed hook is good. The weight plate 43 is used to provide a gravity guide for the closing of the shackle 4 into the fastening hook.

Further, referring to fig. 1 to 4, the rotating rod 9 is rotatably connected to the door vane base plate 1 through a rotating rod rotating shaft 93, the rotating rod 9 is located on the left side of the fixing plate 10, a notch 91 is formed in one end of the rotating rod 9, which is far away from the fixing plate 10, an extending portion 92 is arranged at one end of the rotating rod 9, which is close to the fixing plate 10, and the end of the rotating rod 9, which is provided with the notch 91, is located between the outer surface of the door vane base plate 1 and the inner surface of the slider 7.

Further, referring to fig. 1 to 5, the guide bar 8 is disposed along the width direction of the door vane base plate 1, the slider 7 is slidably connected to the guide bar 8 along the length direction of the guide bar 8, and the slider 7 is located above the upper swing arm 31. Specifically, a pin shaft penetrating through the thickness direction of the sliding block 7 is arranged on the sliding block 7, the pin shaft comprises a first shaft part 71 and a second shaft part 72, the first shaft part 71 is fixedly connected with a belt fixing part on a synchronous belt of a gantry crane, and the synchronous belt is used for driving the sliding block 7 to slide along the length direction of the guide rod 8; the notch 91 can be clamped with the second shaft part 72, so that the slide block 7 cannot slide on the guide rod 8, and when the notch 91 is separated from the second shaft part 72, the slide block 7 can slide on the guide rod 8 under the transmission action of the synchronous belt. In addition, the upper end portion of one side of the slider 7 close to the fixing plate 10 is further provided with a notch 73 matched with the rotating rod 9, which is convenient for placing the oscillating rod 5, especially when the notch 91 of the rotating rod 9 is clamped with the second shaft portion 72 of the pin shaft, if there is no notch 73, because of the height of the slider 7 itself, the end portion of the rotating rod 9 provided with the notch 91 is tilted upwards, so that the notch 91 is difficult to be effectively clamped with the second shaft portion 72.

The utility model discloses a door sword device is at the operation process of elevator switch door in-process as follows:

referring to fig. 1, when the elevator door is closed in place, the slider 7 is located at the rightmost side of the guide rod 8, that is, at one end of the guide rod 8 close to the fixing plate 10, at this time, the extending portion 92 of the rotating rod 9 abuts against the fixing plate 10, the notch 91 of the rotating rod 9 is not clamped with the second shaft portion 72, the oscillating rod 5 rotatably connected with the slider 7 falls, the traction rope 6 is not hooked, the latch hook 4 is clamped in the fixing hook at this time, and the door vane device is locked. At this point the elevator can continue to move up and down or to a certain level in preparation for opening the door. Referring to fig. 2 and 3, when the elevator is gradually opened from a closed state, at which the car just runs to a certain floor, the two gate balls 100 of the landing door are located within the length range of the left knife arm 21 and the right knife arm 22, but do not clamp the gate balls 100 (as shown in fig. 2). Along with the transmission of the synchronous belt, the sliding block 7 is driven to move from the right side to the left side of the guide rod 8 until the notch 91 is clamped with the second shaft part 72, at the moment, the sliding block 7 does not move any more, and in the process that the sliding block 7 moves from the right side to the left side, the swing rod 5 is driven to rotate, so that the swing rod 5 hooks the traction rope 6 upwards, the lock hook 4 is further lifted upwards, the lock hook 4 is separated from the fixed hook, and the door knife device is unlocked; the rotation of the swing link 5 will also drive the upper swing arm 31 to rotate, and further drive the left knife arm 21 and the right knife arm 22 to move toward the direction of approaching each other until the left knife arm 21 and the right knife arm 22 clamp the two gate balls 100 on the landing door (as shown in fig. 3). Subsequently, in a state that the sliding block 7 cannot slide continuously, the synchronous belt drives the whole door vane device to move leftwards, and in the process, as the left knife arm 21 and the right knife arm 22 are clamped with the door ball 100, the landing door and the car door can be opened gradually at the same time until the door is opened in place.

When the elevator is closed by the state of opening the door gradually, drive whole door sword device through the transmission of hold-in range earlier and remove gradually rightly, slider 7 and notch 91 still are in the joint state this moment, when door sword device removes to the extension 92 of dwang 9 and touches fixed plate 10 and looks butt with it, the tip that dwang 9 was seted up notch 91 can upwards lift make notch 91 can't continue with second axle part 72 joint, at this moment, under the continuous transmission effect of hold-in range, can drive slider 7 and remove to the right side by the left side of guide bar 8, the removal of slider 7 can drive pendulum rod 5 and rotate, the tip that makes pendulum rod 5 and haulage rope 6 be connected falls gradually, thereby make latch hook 4 fall and with the fixed hook locking, the elevator is closed the door and is in place. The rotation of the swing link 5 will also drive the upper swing arm 31 to rotate, and further drive the left knife arm 21 and the right knife arm 22 to move in the direction away from each other until the left knife arm 21 and the right knife arm 22 release the gate ball 100. The car can now be moved up or down.

The utility model discloses a door sword device is as follows at the operation process under the different operating mode of taking off a door:

referring to fig. 2 and 3, when the elevator runs to the leveling position (the elevator is in a door closing state), because the left knife arm 21 and the right knife arm 22 clamp the two gate balls 100 or the two gate balls 100 are located within the length range of the left knife arm 21 and the right knife arm 22, at this time, when a landing door is taken off in the car, the gate ball 100 on the left will touch the left knife arm 21 and apply an acting force to the left knife arm 21 in the horizontal direction to make it float, the movement of the left knife arm 21 will drive the upper swing arm 31 and the lower swing arm 32 to rotate, and further drive the swing link 5 to rotate, the swing link 5 will hook up the traction rope 6 upwards, and finally drive the latch hook 4 to lift up, so that the latch hook 4 is separated from the fixed hook, and the gate knife device is unlocked. When a maintenance person takes off the door outside the hall, the door ball 100 on the right side can touch the right knife arm 22 and apply an acting force to the right knife arm 22 in the horizontal direction to move the right knife arm, the floating of the right knife arm 22 can also drive the upper swing arm 31 and the lower swing arm 32 to rotate, and then the swing rod 5 is driven to rotate, the swing rod 5 rotates to upwards hook the traction rope 6, finally the lock hook 4 is driven to lift, the separation of the lock hook 4 and the fixed hook is realized, and the door knife device can be unlocked.

Referring to fig. 1, when the elevator runs to a non-flat floor position (the elevator is in a door closing state), since the left knife arm 21 and the right knife arm 22 are both separated from the two gate balls 100 on the floor door, no matter a floor door or a car door is taken off, since the left knife arm 21 or the right knife arm 22 does not touch the gate balls 100, the gate balls 100 cannot apply a horizontal acting force to the left knife arm 21 or the right knife arm 22, the left knife arm 21 or the right knife arm 22 cannot float, and the locking hook 4 still maintains a state of being locked with the fixed hook.

Further, referring to fig. 6, the latch hook 4 is further provided with a latch slot 45 located below the latch hook rotating shaft 42. An unlocking matching piece 11 is arranged between the right side part of the door vane bottom plate 1 and the locking hook 4, the unlocking matching piece 11 is connected with an unlocking rope 12, and the unlocking matching piece 11 can slide along the locking groove 45 by pulling the unlocking rope 12. Referring to fig. 4, when the elevator is in a failure and the car is close to the landing door, the rescue worker can directly pull the unlocking rope 12 in the car to drive the unlocking matching member 11 to slide in the lock groove 45, and further drive the lock hook 4 to rotate, so that the lock hook 4 is lifted upwards from the fixed hook, unlocking of the door vane device is realized, and the rescue worker can open the car door.

The utility model discloses a door sword device is through the pendulum rod 5 with the swing arm linkage, with the setting of the haulage rope 6 of latch hook 4 linkage, when taking off the door, the unsteady drive swing arm through left knife arm 21 or right knife arm 22 rotates, and then drive pendulum rod 5 and rotate, pendulum rod 5 rotates and can upwards collude haulage rope 6, drive latch hook 4 and upwards lift up, so that the unblock of door sword device, satisfy the requirement of various operating modes of taking off the door in the national standard, and simplified door sword device's structure, the security and the reliability of using have been improved.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (10)

1. A door knife device comprises a door knife bottom plate, a left knife arm, a right knife arm, a swing arm and a lock hook, wherein the left knife arm, the right knife arm, the swing arm and the lock hook are arranged on the door knife bottom plate; it is characterized in that the preparation method is characterized in that,

the door knife device further comprises a swing rod and a traction rope, one end of the traction rope is connected with the lock hook, and the other end of the traction rope is connected with the door knife bottom plate; one end of the swing rod is rotatably connected with the swing arm, and the other end of the swing rod is slidably connected with the traction rope.

2. The door knife device according to claim 1, wherein the number of the swing arms is two, the swing arms comprise an upper swing arm and a lower swing arm, and the upper end of the upper swing arm is rotatably connected with the lower end of the swing rod.

3. The door knife device according to claim 1, wherein a roller is disposed at an end of the swing rod away from the swing arm, a wheel groove for the traction rope to slide is disposed on the roller, and the wheel groove and the traction rope are located in the same vertical plane.

4. The door vane device according to claim 1, wherein a fixing block is provided on the latch hook, and one end of the pulling rope is connected to the fixing block.

5. The door knife device according to claim 1, comprising a slider and a guide rod, wherein the slider is slidably connected with the guide rod along the length direction of the guide rod; the swing rod is rotatably connected with the sliding block.

6. The door knife device according to claim 5, further comprising a rotating rod and a fixing plate, wherein the rotating rod is rotatably connected with the door knife bottom plate, and the fixing plate is fixedly connected with the door knife hanging plate; the dwang is kept away from the one end of fixed plate has been seted up the notch, the dwang is close to the one end of fixed plate is provided with the extension, the dwang has been seted up the tip of notch is located the surface of door sword bottom plate with between the internal surface of slider.

7. The door knife device according to claim 6, wherein a pin shaft penetrating through the thickness direction of the slider is arranged on the slider, the pin shaft comprises a first shaft part and a second shaft part, the first shaft part is fixedly connected with a belt fixing part on a synchronous belt, and the synchronous belt is used for driving the slider to slide along the length direction of the guide rod; the second shaft portion is fitted with the notch.

8. The door knife device according to claim 7, wherein when the slider is located at an end of the guide rod away from the fixed plate, the extension part is away from the fixed plate or the extension part is away from the fixed plate, and the notch is clamped with the second shaft part; when the slide block is positioned at one end of the guide rod close to the fixed plate, the extending part is abutted against the fixed plate, and the notch is separated from the second shaft part.

9. The door knife device according to claim 6, wherein the upper end of the slider near the fixed plate is provided with a notch matched with the rotating rod.

10. The door knife device according to claim 2, wherein a first rotating shaft is arranged between the upper swing arm and the door knife base plate, a second rotating shaft is arranged between the lower swing arm and the door knife base plate, the upper swing arm is rotatably connected with the door knife base plate through the first rotating shaft, the lower swing arm is rotatably connected with the door knife base plate through the second rotating shaft, and the first rotating shaft and the second rotating shaft are located in the same vertical direction.

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