Device for verifying closing position of elevator car door

Abstract

The utility model discloses a device for verifying the closing position of an elevator car door, which comprises a car door sill and a guide assembly, the inner side of the car door sill is connected with two groups of door sliding blocks in a sliding manner, the tops of the two groups of door sliding blocks are respectively provided with a left car door and a right car door, the sides, close to each other, of the bottoms of the left car door and the right car door are provided with extension pieces, and the extension pieces are connected with the guide assembly. The side, close to the extending piece, of the bottom of the left car door is provided with an anti-disengaging nut. According to the utility model, through the mutual cooperation of the microswitch, the sinker bar assembly, the extension piece and the anti-drop nut, when the elevator car door is closed, if a foreign matter is clamped at the lower part of the car door, the microswitch and the sinker bar assembly cannot be normally contacted, and the elevator cannot be started; the defect that when the lower portion of the car door of an existing elevator is clamped by a small object, the small object cannot be detected by a car door closing verification switch which is installed at the head of the car door and used for verifying closing of the car door is overcome, and the running safety of the elevator is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator car door technical field, concretely is a device for verifying elevator car door closing position. BACKGROUND

[0002] The elevator car door is one of elevator structures, that is, the door seen in the elevator when the elevator is closed, which is opposite to the hall door, that is, the door seen when calling the elevator outside, the elevator is a vertical elevator, which is provided with a box-shaped cabin, called car, and is a box-shaped space used for carrying and transporting personnel and materials, and the car is generally composed of a car bottom, a car wall, a car roof, a car door and the like.

[0003] The existing elevator car door is usually suspended on the car door guide rail through the door hanging wheel, and the vertical direction of the car door is limited by the compression wheel, in order to make the car door open / close smoothly, a small adjustment gap S should be provided between the compression wheel and the lower edge of the car door guide rail, in order to make the car door stable when the elevator runs after being closed, a device relying on electricity as closing force F and being kept is arranged at the door head above the car door, so as to prevent the layer car door from relaxing due to elevator shaking and the like, and cause the electrical safety closing force F device for verifying the closure of the layer door and the car door to be disconnected and cause elevator failure.

[0004] Under normal circumstances, the elevator is closed under the action of the closing force F generated by the door machine, the car door position verification switch is turned on after the car door is closed in place, and the elevator starts to run, if an object is stuck above the layer car door, the elevator cannot be completely closed, and the electrical safety device for verifying the closure of the car door arranged at the door head cannot detect the car door closing signal, so the elevator cannot start to run.

[0005] However, if a smaller object is stuck below the layer car door, because H is much larger than L (see Figure 3 ), the torque F*H generated by the smaller car door closing force F can overcome the torque W*L generated by the weight W of the car door, that is, F*H=W*L, and due to the small gap S between the car door closing force F and the lower edge of the car door guide rail and the elastic deformation of the car door system under force, when the electric door closing device arranged above the car door is closed, the elevator will be closed under the action of the closing force F generated by the door machine, so that the car door will rotate around the rotating center of the smaller object (as shown in Figure 3 ), until the electrical safety device for verifying the closure of the car door is turned on and kept, so that the elevator starts to run and causes an accident. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a device for verifying the closing position of the elevator car door, so as to solve the problems in the above background technology.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a device for verifying elevator car door closing position, including car door sill and guide component, the inside of car door sill is connected with two groups of door sliding block, the top of two groups door sliding block is provided with left car door and right car door respectively, the bottom side close to the extension piece of left car door and right car door is provided with anti -unthreaded nut, the inside of anti -unthreaded nut is provided with the knock rod assembly, the bottom side close to the extension piece of right car door is provided with micro -switch, the top side close to left car door and right car door is provided with car door closing verification switch.

[0008] Preferably, the knock rod assembly includes a screw rod and a knock rod seat, the inside of the anti-unthreaded nut is threadedly connected with the screw rod, and one side of the screw rod is provided with the knock rod seat matched with the micro-switch, which can detect the closing state of the car door bottom.

[0009] Preferably, the guide component includes a mounting plate, a car door guide rail, a door hanging wheel and a pressing wheel, the top of the right car door is provided with two groups of mounting plates, the top of one end of the mounting plate is provided with the door hanging wheel, the middle of one end of the mounting plate is provided with the pressing wheel, and the car door guide rail is located inside the door hanging wheel and the pressing wheel for guiding the right car door.

[0010] Preferably, the top of the door sliding block is provided with a fixing bolt, and the door sliding block is connected with the left car door and the right car door through the fixing bolt for fixing the door sliding block and the left car door and the right car door.

[0011] Preferably, one side of the bottom of the left car door is provided with a fixing plate, and the anti-unthreaded nut is located on one side of the fixing plate for providing a mounting position for the anti-unthreaded nut.

[0012] Preferably, the inside of the car door sill is provided with a sliding block groove matched with the door sliding block, so that the door sliding block can slide along the inside of the car door sill.

[0013] Preferably, the top and the bottom of one side of the right car door are provided with a buffer pad, which can buffer the impact when the left car door and the right car door are closed.

[0014] Compared with the prior art, the device for verifying elevator car door closing position has the beneficial effects that: through the mutual cooperation among the micro-switch, the knock rod assembly, the extension piece and the anti-unthreaded nut, if there is a foreign matter clamped in the lower part of the car door when the car door is closed, the micro-switch and the knock rod assembly cannot normally contact, and the elevator cannot be started, which solves the defect that the car door closing verification switch installed on the car door cannot detect when a small object is clamped in the lower part of the car door, and effectively improves the safety of the elevator operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1The utility model discloses a closed state's main view of section view of the utility model;

[0016] Figure 2 The utility model discloses an abnormal state's main view of section view of the utility model;

[0017] Figure 3 The utility model discloses a prior art's main view of section view.

[0018] In the drawing: 1, car door sill;2, microswitch;3, ram assembly;4, extension piece;5, anti-loose nut;6, door sliding block;7, left car door;8, car door closing verification switch;9, mounting plate;10, car door guide rail;11, door hanging wheel;12, compression wheel;13, right car door. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0020] Please refer to Figures 1-3 The utility model provides an embodiment: a device for verifying the closing position of elevator car door, including car door sill 1 and guide assembly, the inside of car door sill 1 is slidably connected with two groups of door sliding blocks 6, and the top of two groups of door sliding blocks 6 is provided with left car door 7 and right car door 13 respectively, and the bottom of left car door 7 and right car door 13 is provided with extension piece 4 on the side close to each other, and left car door 7 is provided with anti-loose nut 5 on the side close to extension piece 4 at the bottom, and the inside of anti-loose nut 5 is provided with ram assembly 3, and right car door 13 is provided with microswitch 2 on the side close to extension piece 4 at the bottom, and the top of left car door 7 and right car door 13 is provided with car door closing verification switch 8 on the side close to each other;

[0021] Ram assembly 3 includes screw rod and ram seat, and the inside of anti-loose nut 5 is threadedly connected with screw rod, and the side of screw rod is provided with ram seat matched with microswitch 2, can detect the closing state of car door bottom;

[0022] Guide assembly includes mounting plate 9, car door guide rail 10, door hanging wheel 11 and compression wheel 12, and the top of right car door 13 is provided with two groups of mounting plates 9, and the top of one end of mounting plate 9 is provided with door hanging wheel 11, and the middle of one end of mounting plate 9 is provided with compression wheel 12, and car door guide rail 10 is located on the inside of door hanging wheel 11 and compression wheel 12, and is used for guiding right car door 13;

[0023] Micro switch 2 and car door above car door closing verification switch 8 in series, in order to prevent elevator operation due to jitter or have personnel hand pull car door caused by elevator malfunction, this micro switch 2 both ends parallel to another bypass switch, after the elevator starts, this bypass switch is on, micro switch 2 invalid; The elevator stops, and the bypass switch is turned off, and the micro switch 2 is effective.

[0024] Further, the top of the door sliding block 6 is provided with a fixing bolt, and the door sliding block 6 is connected with the left car door 7 and the right car door 13 through the fixing bolt, for fixing the door sliding block 6 and the left car door 7 and the right car door 13.

[0025] Further, one side of the bottom of the left car door 7 is provided with a fixed plate, and the anti-loose nut 5 is located on one side of the fixed plate, for providing a mounting position for the anti-loose nut 5.

[0026] Further, the inner side of the car door sill 1 is provided with a sliding block groove matched with the door sliding block 6, so that the door sliding block 6 can slide along the inner side of the car door sill 1.

[0027] Further, the top and bottom of one side of the right car door 13 are provided with buffer pads, which can buffer the impact when the left car door 7 and the right car door 13 are closed.

[0028] Working principle: when the left car door 7 and the right car door 13 are closed, the closing of the top of the car door can be verified through the two groups of car door closing verification switches 8, if there is an object stuck above the car door, the elevator cannot be completely closed, the car door closing verification switch 8 cannot detect the closing signal of the left car door 7 and the right car door 13, and the elevator cannot start running;

[0029] The micro switch 2 at the bottom of the right car door 13 can detect the closing condition of the bottom of the elevator, when the dog rope and other foreign matters are clamped at the lowermost edge of the car door, the two groups of extension pieces 4 will be intercepted, at this time the impact rod assembly 3 cannot contact the micro switch 2, so the micro switch 2 cannot be turned on, and the elevator cannot start running, which maximizes the safety of the elevator in use.

[0030] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0031] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two;The terms "up", "down", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0032] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. A device for verifying the closed position of an elevator car door, comprising a car door sill (1) and a guide assembly, characterized in that: The inner side of the car door sill (1) is slidably connected with two groups of door sliding blocks (6), the top of the two groups of door sliding blocks (6) is respectively provided with a left car door (7) and a right car door (13), the bottom of the left car door (7) and the right car door (13) is provided with an extension piece (4) on one side close to each other, the bottom of the left car door (7) is provided with an anti-loosening nut (5) on one side close to the extension piece (4), the inner side of the anti-loosening nut (5) is provided with a striker assembly (3), the bottom of the right car door (13) is provided with a micro switch (2) on one side close to the extension piece (4), and the top of the left car door (7) and the right car door (13) is provided with a car door closing verification switch (8) on one side close to each other.

2. A device for verifying the closing position of an elevator car door according to claim 1, characterized in that The striker assembly (3) comprises a screw rod and a striker seat, the inner side of the anti-loosening nut (5) is threadedly connected with the screw rod, and one side of the screw rod is provided with the striker seat matched with the micro switch (2).

3. A device for verifying the closing position of an elevator car door according to claim 1, characterized in that: The guide assembly comprises a mounting plate (9), a car door guide rail (10), a door hanging wheel (11) and a pressing wheel (12), the top of the right car door (13) is provided with two groups of mounting plates (9), the top of one end of the mounting plate (9) is provided with the door hanging wheel (11), the middle of one end of the mounting plate (9) is provided with the pressing wheel (12), and the car door guide rail (10) is located on the inner side of the door hanging wheel (11) and the pressing wheel (12).

4. A device for verifying the closing position of an elevator car door according to claim 1, characterized in that: The top of the door sliding block (6) is provided with a fixing bolt, and the door sliding block (6) is connected with the left car door (7) and the right car door (13) through the fixing bolt.

5. A device for verifying the closing position of an elevator car door according to claim 1, characterized in that: One side of the bottom of the left car door (7) is provided with a fixed plate, and the anti-loosening nut (5) is located on one side of the fixed plate.

6. A device for verifying the closing position of an elevator car door according to claim 1, characterized in that: The inner side of the car door sill (1) is provided with a sliding block groove slidably matched with the door sliding block (6).

7. A device for verifying the closing position of an elevator car door according to claim 1, characterized in that: The top and the bottom of one side of the right car door (13) are provided with buffer pads.

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