CN103832908A - Elevator door motor pulling preventing device - Google Patents

Abstract

The invention discloses an elevator door machine anti-cracking device, which comprises an upper sill, and a left hanging plate and a right hanging plate slidably arranged on the upper sill, and the left hanging plate is provided with a door driven by a motor transmission belt. The knife mechanism is characterized in that: the upper sill is provided with an anti-picking limit plate, and the left hanging plate is hinged with an anti-picking lock hook that can be turned over and matched with the anti-picking limit plate, The anti-picking lock hook is formed with a slanted hole, and the door knife mechanism is provided with a hole that extends into the slanted hole, and when the door knife mechanism moves, it can drive the anti-picking lock hook to perform a flipping action. Thereby selectively make the anti-strip lock hook and the anti-strip limit plate lock each other or separate the lock hook toggle pin. The elevator door machine anti-picking device of the present invention has a simple and compact structure and stable performance.

Description

An anti-cracking device for an elevator door machine

technical field

The invention relates to the field of car elevators, in particular to an anti-cracking device for an elevator door machine.

Background technique

The national standard GB75-88-2003 "Safety Code for Elevator Manufacturing and Installation" stipulates in 12.2.1: the horizontal distance between the inner surface of the elevator shaft and the edge of the nearest door of the car sill, car door frame or sliding door should not be greater than 0.15 m. It also stipulates that if the car is equipped with mechanically locked doors which can only be opened in the unlocked area of the landing doors, the operation of the lift shall automatically depend on the locking of the car doors, except in the cases mentioned in 7.7.2.2, and The locking of the car door must be verified by an electrical safety device that meets the requirements of 14.1.2, so the above distance is not limited. Therefore, if the distance specified in 11.2.1 exceeds 0.15m, the car door lock (anti-picking device) can be installed to meet the standard. The function of the car door lock is that the car door can only be opened in the unlocking area of the landing door to prevent occurrence of security incidents.

Then in the prior art, most of the anti-picking devices of elevator door machines have defects such as complex structure and unstable performance.

Contents of the invention

The purpose of the present invention is to solve the above problems and provide an elevator door machine anti-cracking device with simple and compact structure and stable performance.

The technical solution of the present invention is: the elevator door machine anti-cracking device includes an upper sill, and a left hanging plate and a right hanging plate slidably arranged on the upper sill, and the left hanging plate is provided with a belt driven by a motor. The transmission door knife mechanism is characterized in that: the upper sill is provided with an anti-stealing limiting plate, and the left hanging plate is hinged with an anti-stealing anti-stealing plate that can flip and move and cooperates with the anti-stealing limiting plate. The lock hook is formed with a slanted bar hole on the anti-picking lock hook, and the door knife mechanism is provided with a hole that extends into the slanted bar hole. When the door knife mechanism moves, it can drive the anti-picking lock hook to work The hook toggle pin is turned over to selectively lock the anti-pickup shackle and the anti-pickup limit plate to each other or to separate them from each other.

As a preference, one end of the anti-picking hook is hinged on the left hanging plate through a hinge, and the other end is a hook portion that can be hooked on the anti-picking limit plate, and the oblique bar hole is located on the The middle part of the anti-picking shackle.

As preferably, the door knife mechanism includes a door knife bottom plate, and a left blade, a right blade, an anti-stealing blade, a rocking plate, a rocker, an upper connecting rod, a lower connecting rod, a left connecting rod and Right connecting rod; wherein, the door knife bottom plate is fixed on the left hanging plate, the rocking plate and the rocking bar are hinged on the door knife bottom plate, and the rocking plate is located above the rocking bar, and the rocking plate has three connecting ends distributed in a triangle, One of the connecting ends is connected with the motor transmission belt, and the remaining two connecting ends are respectively hinged on the left blade and the right blade, and the two ends of the rocking bar are respectively hinged on the left blade and the right blade, and the anti-stealing blade is positioned at the left blade The left side is hinged on the door knife base plate through the upper link and the lower link, one end of the left link and the right link are hinged together, the other end of the left link is hinged on the anti-stealing blade, and the right link The other end of bar is hinged on the left blade, and described lock hook toggle pin is fixed on the anti-stealing blade.

As a preference, an anti-stealing blade limiting block is fixed on the door knife bottom plate in contact with the anti-stealing blade, and a tension spring is connected between the anti-stealing blade and the door knife bottom plate.

Preferably, the locking hook toggle pin is fixed on the anti-stealing blade by bolts.

Preferably, the door knife bottom plate is fixed on the left hanging plate by a bolt and nut assembly.

The advantages of the present invention are: the elevator door machine anti-cracking device of the present invention has a simple and compact structure, takes up little space, and has very stable working performance.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

FIG. 1 is a schematic diagram of the overall structure of the elevator door machine anti-snipping device according to the embodiment of the present invention;

Fig. 2 is one of the partial structural diagrams of the elevator door machine anti-snipping device in the embodiment of the present invention when the anti-snapping lock hook is locked;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the second schematic diagram of the local structure of the elevator door machine anti-snipping device when the anti-snapping lock hook is locked;

Fig. 5 is one of the partial structural schematic diagrams of the elevator door machine anti-stealing device according to the embodiment of the present invention when the anti-stealing hook is unlocked;

Fig. 6 is the second schematic diagram of the partial structure of the anti-snapping device of the elevator door machine according to the embodiment of the present invention when the anti-snapping hook is unlocked;

Fig. 7 is a schematic structural view of the anti-snapping limiting plate in the anti-snapping device of the elevator door machine according to the embodiment of the present invention;

Figure 8 is a top view of Figure 7;

Among them: 1-upper sill, 2-left hanging plate, 3-stop pin, 4-door knife mechanism, 401-door knife bottom plate, 402-left blade, 403-right blade, 404-rocking plate, 405-rocker, 406-upper link, 407-lower link, 408-left link, 409-right link, 4010-anti-snipping blade, 4011-anti-snipping blade limit block, 4012-extension spring, 5-anti-snipping lock hook , 501-slope hole, 6-anti-pick limit plate, 7-hook toggle pin, 8-bolt.

Detailed ways

Figures 1 to 8 show a specific embodiment of the elevator door machine anti-cracking device of the present invention, which includes an upper sill 1, and a left hanging plate 2 and a right hanging plate slidably arranged on the upper sill (in the figure not shown), the linkage between the left hanging plate 2 and the right hanging plate 3 is realized through a rope mechanism (not shown in the figure), and the left car door and the right car door of the car elevator are connected with the left hanging plate 2 and the right hanging plate respectively. The right hanging plate 3 is fixedly connected, and the left hanging plate 2 is provided with a door knife mechanism 4 driven by a motor drive belt (not shown in the figure).

The key improvement of this embodiment is that: as shown in Fig. 1, Fig. 2 and Fig. 3, the upper sill 1 is provided with an anti-picking limit plate 6, and the left hanging plate 2 is hinged with a flip-movable and The anti-picking lock hook 5 cooperating with the anti-picking limiting plate 6 (the horizontal distance between the locking positions of the two is <25mm). The so-called "cooperate with each other" means: when the anti-snipping lock hook 5 is turned over to the first working position, the anti-snipping lock hook 5 is hooked on the anti-snipping limit plate 6 so that the two are fixedly connected together; When the locking hook 5 is overturned to the second working position, the anti-picking locking hook 5 is disengaged from the anti-picking limiting plate 6, so that the two are separated from each other. The anti-picking lock hook 5 is formed with a slanted hole 501 (slanted bar hole), and the door knife mechanism 4 is provided with a lock hook toggle pin 7 extending into the slanted hole 501, and the The locking hook toggle pin 7 is coordinated with the door knife mechanism 4. When the door knife mechanism 4 moves, it can drive the lock hook toggle pin 7 to move, and then the lock hook toggle pin 7 drives the anti-snipping lock hook 5 to perform a flipping action. Therefore, the anti-pickling lock hook 5 and the anti-pickup limiting plate 6 are selectively locked or separated from each other.

As shown in Fig. 4 and Fig. 6, in this example, one end of the anti-picking lock hook 5 is hinged on the left hanging plate 2 through a hinge shaft, and the other end can be hooked on the anti-picking limit plate 6 The hook portion, the slanted bar hole 501 is located in the middle of the anti-picking hook 5 .

The detailed structure of described door knife mechanism 4 can refer to shown in Fig. 1, Fig. 2 and Fig. 5, and it comprises door knife bottom plate 401, left blade 402, right blade 403, pick-off blade 4010, rocking plate 404, rocking bar 405, Upper connecting rod 406, lower connecting rod 407, left connecting rod 408 and right connecting rod 409, wherein left blade 402, right blade 403, anti-picking blade 4010, rocking plate 404, rocking bar 405, upper connecting rod 406, lower connecting rod 407 , left connecting rod 408 and right connecting rod 409 are all arranged on the front of door knife base plate 1 . It should be noted that, the front and back sides mentioned in this example are all with reference to Fig. 1, wherein, the front side refers to the side where the door knife bottom plate 401 in Fig. 1 faces the reader, and the back side refers to the door knife bottom plate 401 in Fig. 1 The side that turns away from the reader. The door knife bottom plate 401 is fixed on the left hanging plate 2 through a bolt and nut assembly (not marked in the figure), the rocking plate 404 and the rocking bar 405 are both hinged on the door knife bottom plate 401, and the rocking plate 404 is located above the rocking bar 405 . The rocking plate 404 has three connecting ends distributed in a triangle, one of which is connected to the motor drive belt, and the other two connecting ends are respectively hinged on the left blade 402 and the right blade 403 . The two ends of the rocking bar 405 are respectively hinged on the left blade 402 and the right blade 403 . The anti-stealing blade 4010 is positioned at the left side of the left blade 402, and the anti-stealing blade 4010 is hinged on the door knife base plate 401 through the upper link 406 and the lower link 407. One end of described left connecting rod 408 and right connecting rod 409 is hinged together, and the other end of left connecting rod 408 is hinged on the anti-stealing blade 4010, and the other end of right connecting rod 409 is hinged on the left blade 402, and described lock Hook toggle pin 7 is fixed on the anti-stealing blade 4010 by nut 8.

During work, the motor drive belt drives the rocking plate 404 to rotate, and the rocking plate drives the left and right blades to move (closer to each other/away from each other), and the left and right blades cooperate with the door ball (not shown in the figure) in the elevator.

Combined with what is shown in Figures 1 to 8, the working principle of this embodiment is briefly introduced as follows:

1. When the door machine controller receives the door-opening signal, the motor operates, and the motor drives the rocking plate 404 to rotate counterclockwise as shown in Figure 1. The rocking plate 404 drives the left blade 402 and the right blade 403 to approach each other, wherein the left blade 402 moves to the right, thereby pulling the anti-stealing blade 4010 to move to the upper right by the left connecting rod 408 and the right connecting rod 409, and is in the position shown in Fig. State shown in 5. The locking hook toggle pin 7 that is fixed on the anti-picking blade 4010 will stir the anti-picking locking hook 5 and rotate counterclockwise in Fig. 4, and be in the position shown in Fig. Grilling limit plate 6 is separated from each other, and left hanging plate 2 breaks away from the restriction of upper sill 1 and can slide freely, and then realizes the action of opening the door.

2. When the car door is closed and the door machine controller receives the door closing signal, the motor will act, and the motor will drive the rocking plate 404 to rotate clockwise as shown in FIG. 5 . The rocking plate 404 drives the left blade 402 and the right blade 403 to move away from each other, wherein the left blade 402 moves to the left, thereby promoting the anti-stealing blade 4010 to move to the lower left by the left connecting rod 408 and the right connecting rod 409. 2 shows the state. The locking hook toggle pin 7 that is fixed on the anti-picking blade 4010 will stir the anti-picking locking hook 5 and rotate clockwise in Fig. 6, and be in the position shown in Fig. 4, thereby make the anti-picking locking hook 5 and the Pick up limit plate 6 locks mutually, and the left and right position of left hanging plate 2 is restricted by upper sill 1 and can not slide freely, and makes elevator car door have anti-picking function.

3. When the elevator is in the leveling area, if there is a fault, the door operator cannot complete the door opening action normally, apply force from inside the car to open the car door, the left door knife 402 drives the anti-picking blade 4010 to move 6mm to the left, and the anti-picking blade 4010 will touch the stop pin 3 of the landing door device (the stop pin 3 is not set on the left hanging plate 2, but is set on the elevator landing door device, and its working principle is similar to the gate ball matched with the door knife) . Continue to pick the door, under the blockage of the landing door device stop pin, the anti-picking blade is lifted to the upper right, and the lock hook toggle pin 7 will turn the anti-picking lock hook 5 to rotate counterclockwise in Figure 4, while in Figure 4 Position shown in 6, so that the anti-picking lock hook 5 and the anti-picking limit plate 6 are separated from each other, the left hanging plate 2 breaks away from the restriction of the upper sill 1 and can slide freely, and the car door can be considered to be opened.

4. When the elevator has not reached the leveling area, if force is applied from the car to forcibly lift the car door, the anti-pick blade 4010 will not reach the position of the stop pin 3 of the landing door device, that is, the stop pin 3 is not in the position shown in Figure 1. The position shown, so the anti-picking blade 4010 can not move up and down, and the anti-picking lock hook 5 and the anti-picking limiting plate 6 are always in a mutually locked state, so the car door cannot be forcibly pulled open.

As shown in Fig. 2 and Fig. 5, this example is also fixed on the door knife base plate 401 with the anti-stealing blade limiting block 4011 that is in contact with the anti-stealing blade 4010, and this anti-stealing blade limiting block 4011 makes the upper link And one end of the lower link is at the upper left, and the other end is at the lower right, so as to ensure that the anti-stealing blade 4010 can move upwards instead of downwards when being pulled to the left or pushed to the right. And an extension spring 4012 is connected between the anti-picking blade 4010 and the door knife base plate 401, so that the anti-picking blade 4010 and the anti-picking blade limiting block 4011 fit together better.

Certainly, the above-mentioned embodiments are only for illustrating the technical conception and characteristics of the present invention, and the purpose is to enable people to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the main technical solutions of the present invention shall fall within the protection scope of the present invention.

Claims (6)

1. An elevator door machine anti-cracking device, comprising an upper sill (1), and a left hanging plate (2) and a right hanging plate (3) slidingly arranged on the upper sill, the left hanging plate (2) A door knife mechanism (4) driven by a motor drive belt is provided on the top, and the feature is that: the upper sill (1) is provided with an anti-picking limit plate (6), and the left hanging plate (2) is hinged with a An anti-pickling lock hook (5) that can be flipped over and matched with the anti-picking limit plate (6). The anti-pickling lock hook (5) is formed with a slanted hole (501), and the door knife The mechanism (4) is provided with a stick extending into the inclined bar hole (501), which can drive the anti-picking lock hook (5) to turn over when the door knife mechanism is in action, so as to selectively make the anti-picking lock The lock hook toggle pin (7) that the hook (5) and the anti-pick limit plate (6) are locked or separated from each other. 2. The anti-snipping device of the elevator door machine according to claim 1, characterized in that: one end of the anti-snipping hook (5) is hinged to the left hanging plate (2) through a hinge shaft, and the other end is a The hook is hooked on the hook portion of the anti-pickling limiting plate (6), and the oblique bar hole (501) is located in the middle of the anti-pickling lock hook (5). 3. The elevator door machine anti-cracking device according to claim 1 or 2, characterized in that: the door knife mechanism (4) includes a door knife bottom plate (401), and a left blade ( 402), right blade (403), anti-stealing blade (4010), rocking plate (404), rocker (405), upper link (406), lower link (407), left link (408) and right Connecting rod (409); wherein, the door knife bottom plate (401) is fixed on the left hanging plate (2), the rocking plate (404) and the rocking bar (405) are hinged on the door knife bottom plate (401), and the rocking plate ( 404) Located above the rocker (405), the rocker (404) has three connecting ends distributed in a triangle, one of which is connected to the motor drive belt, and the other two connecting ends are respectively hinged on the left blade (402) and the right blade (403), the two ends of the rocker (405) are respectively hinged on the left blade (402) and the right blade (403), and the anti-stealing blade (4010) is located on the left side of the left blade (402) and The upper link (406) and the lower link (407) are hinged on the door knife bottom plate (401), one end of the left link (408) and the right link (409) are hinged together, and the left link The other end of (408) is hinged on the anti-stealing blade (4010), the other end of the right connecting rod (409) is hinged on the left blade (402), and the lock hook toggle pin (7) is fixed on the anti-stealing blade ( 4010) on. 4. The elevator door machine anti-stealing device according to claim 3, characterized in that: the door knife bottom plate (401) is fixed with an anti-stealing blade limit block (4011) that contacts and cooperates with the anti-stealing blade (4010) , and an extension spring (4012) is connected between the anti-stealing blade (4010) and the door knife base plate (401). 5. The anti-stealing device for elevator door machine according to claim 3, characterized in that: the lock hook toggle pin (7) is fixed on the anti-stealing blade (4010) by bolts (8). 6. The elevator door machine anti-cracking device according to claim 3 or 4, characterized in that: the door knife bottom plate (401) is fixed on the left hanging plate (2) by a bolt and nut assembly.

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