Mechanical lock structure of lift cage door

Abstract

The utility model relates to the technical field of lifters, in particular to a mechanical lock structure of a lifting cage door of a lifter. Comprising a cage body, an upper cage door and a lower cage door which are synchronously driven through chain wheels and chains are arranged on the outlet side of the cage body, a telescopic mechanism is arranged on the side, close to the outlet, of the top of the cage body, a positioning plate is arranged on the top, close to the side of the cage body, of the upper cage door, and a V-shaped limiting strip is arranged on the lower portion of the face, opposite to the telescopic mechanism, of the positioning plate. The telescopic mechanism is clamped at the inner corner of the limiting strip after extending to prevent the upper cage door from moving upwards. When the upper cage door is closed firstly, the telescopic mechanism extends to be clamped at the inner corner of the limiting strip to prevent the upper cage door from being opened upwards, after the lifting switch of the lifting machine controls the lifting of the lifting machine, the telescopic mechanism contracts firstly to be separated from the limiting strip, and then the upper cage door and the lower cage door are opened.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a mechanical lock structure for the cage door of an elevator. Background Technique

[0002] Elevators are widely used in the field of construction engineering, and their main function is to transport construction materials and equipment on the ground to the construction operation area. The equipment responsible for transportation is the cage. During the use of a construction elevator, it is required that the cage outlet door can only be opened when the cage stops at the landing position. On the outlet door side of the cage main body, there are an upper cage door and a lower cage door that are synchronously driven by a sprocket and chain. The traditional implementation method is to install a mechanical lock outside the outlet door. The mechanical lock locks the upper cage door. Only when the cage stops at the landing, the mechanical lock is pushed open by the bumper on the landing, and the upper and lower cage doors on the outlet side can be opened. However, this method requires installing bumpers at each landing, which is not only cumbersome during maintenance, but also too many bumpers may lead to poor reliability of the lock. Content of the Utility Model

[0003] The utility model aims to solve the above problems, thereby providing a mechanical lock structure for the cage door of an elevator that ensures reliability.

[0004] The technical solution adopted by the utility model to solve the above problems is:

[0005] A mechanical lock structure for the cage door of an elevator, including a cage main body. On the outlet side of the cage main body, there are an upper cage door and a lower cage door that are synchronously driven by a sprocket and chain. On the top of the cage main body and near one side of the outlet, there is a telescopic mechanism. On the top of the upper cage door near the cage main body side, there is a positioning plate. At the lower part of the opposite surface of the positioning plate and the telescopic mechanism, there is a V-shaped limiting strip. After the telescopic mechanism extends, it is stuck at the inner corner of the limiting strip to prevent the upper cage door from moving up.

[0006] The utility model adopting the above technical solution, compared with the prior art, its prominent feature is:

[0007] First, when the upper cage door is closed, the telescopic mechanism extends and is stuck at the inner corner of the limiting strip to prevent the upper cage door from opening upward. After controlling the elevator to lift and lower through the elevator lift switch, first, the telescopic mechanism contracts, so that the telescopic mechanism disengages from the limiting strip, and then the upper cage door and the lower cage door are opened.

[0008] As a preference, a further technical solution of the utility model is:

[0009] Furthermore, the telescopic mechanism includes a fixing plate fixed on the top of the cage main body. On one side of the top of the fixing plate, there is an electromagnetic push rod opposite to the upper cage door. The output end of the electromagnetic push rod is connected with an extension push rod. On the other side of the top of the fixing plate, there is a vertical plate, and a through hole opposite to the extension push rod is opened on the vertical plate.

[0010] Further, on the fixed plate and on one side of the extension push rod, a pair of first travel switches electrically connected to the electromagnetic push rod are provided, and a touch plate cooperating with the first travel switches is sleeved on the extension push rod.

[0011] Further, the positioning plate is rotatably connected to the upper cage door.

[0012] Further, the switch mechanism includes a closing travel switch and an opening travel switch fixedly arranged inside the cage body from top to bottom, and a closing bumper and an opening bumper are respectively arranged on the upper and lower parts of the inner side surface of the upper cage door. Description of the Drawings

[0013] Figure 1 It is a front view structural schematic diagram of the cage body of the embodiment of the present utility model;

[0014] Figure 2 It is a top view structural schematic diagram when the upper cage door of the embodiment of the present utility model is opened;

[0015] Figure 3 It is a structural schematic diagram of the telescopic mechanism of the embodiment of the present utility model;

[0016] The marks in the figure are: cage body 1, upper cage door 2, lower cage door 3, closing travel switch 4, opening travel switch 5, positioning plate 6, limiting strip 7, fixed plate 8, electromagnetic push rod 9, extension push rod 10, vertical plate 11, first travel switch 12, touch plate 13. Specific Embodiment

[0017] The following further illustrates the present utility model in conjunction with embodiments, and the purpose is only to better understand the content of the present utility model. Therefore, the examples given do not limit the protection scope of the present utility model.

[0018] A mechanical lock structure for a lift cage door, comprising a cage main body 1. On the exit side of the cage main body 1, there are an upper cage door 2 and a lower cage door 3 that are synchronously driven by a sprocket chain. Inside the traditional cage main body 1, there are a closing travel switch 4 and an opening travel switch 5. At the upper and lower parts of the inner side of the upper cage door 2, there are respectively a closing bumper and an opening bumper. The travel of the upper cage door 2 is limited by the cooperation of the closing bumper and the opening bumper with the closing travel switch 3 and the opening travel switch 4. On the top of the cage main body 1 and near one side of the exit, there is a telescopic mechanism. At the top of the upper cage door 2 near the cage main body 1 side, there is a positioning plate 6. At the lower part of the opposite side of the positioning plate 6 and the telescopic mechanism, there is a V-shaped limiting strip 7. After the telescopic mechanism extends, it is stuck at the inner corner of the limiting strip 7 to prevent the upper cage door 2 from moving up. The lift switch of the lift and the closing travel switch 4 inside the cage main body 1 are respectively connected to the telescopic mechanism for control. Before controlling the lift to ascend or descend, first control the telescopic mechanism to contract and disengage from the limiting strip 7. When the lift stops moving and the upper cage door 2 is closed and triggers the closing travel switch 4, control the telescopic mechanism to extend and be stuck at the inner corner of the limiting strip 7.

[0019] Further, the telescopic mechanism includes a fixing plate 8 fixed on the top of the cage main body 1. On one side of the top of the fixing plate 8, there is an electromagnetic push rod 9 opposite to the upper cage door 2. A lengthening push rod 10 is connected to the output end of the electromagnetic push rod 9. On the other side of the top of the fixing plate 8, there is a vertical plate 11. A through hole opposite to the lengthening push rod 9 is opened on the vertical plate 11. The lengthening push rod 10 movably passes through the through hole, and the through hole ensures the accuracy of the movement track of the lengthening push rod 10.

[0020] Further, on the fixing plate 8 and on one side of the lengthening push rod 10, there is a pair of first travel switches 12 electrically connected to the electromagnetic push rod 9. A touch plate 13 cooperating with the first travel switches 12 is sleeved on the lengthening push rod 10. The first travel switches 12 control the travel of the electromagnetic push rod 9.

[0021] Further, the positioning plate 6 is rotatably connected to the upper cage door 2. During maintenance, the positioning plate 6 can be rotated to misalign the limiting strip 7 and the lengthening push rod 10, and the upper cage door 2 can be opened.

[0022] First, when the upper cage door is closed, the telescopic mechanism extends and is stuck at the inner corner of the limiting strip to prevent the upper cage door from opening upward. After controlling the lift to ascend or descend through the lift switch of the lift, first, the telescopic mechanism contracts to disengage the telescopic mechanism from the limiting strip, and then the upper cage door and the lower cage door are opened. The arrangement of the bumpers at each floor station is reduced, the maintenance difficulty is lowered, and the reliability of the lock is ensured.

[0023] The above are only the preferred and feasible embodiments of the present invention, and do not limit the scope of rights of the present invention accordingly. All equivalent changes made by using the content of the specification and drawings of the present invention are included within the scope of rights of the present invention.

Claims

1. A mechanical lock structure for a lift cage door, comprising a cage main body, wherein an upper cage door and a lower cage door driven synchronously by a sprocket chain are arranged on the outlet side of the cage main body, and it is characterized in that: A telescopic mechanism is provided on one side of the top of the cage main body and close to the exit. A positioning plate is provided at the top of the upper cage door close to the cage main body side. A V-shaped limiting strip is provided at the lower part of the opposite surface of the positioning plate and the telescopic mechanism. After the telescopic mechanism extends, it is stuck at the inner angle of the limiting strip to prevent the upper cage door from moving up.

2. The mechanical lock structure of the lift cage door according to claim 1, characterized in that: The telescopic mechanism includes a fixing plate fixed on the top of the cage main body. One side of the top of the fixing plate is fixed with an electromagnetic push rod opposite to the upper cage door. An extension push rod is connected to the output end of the electromagnetic push rod. A vertical plate is provided on the other side of the top of the fixing plate, and a through hole opposite to the extension push rod is opened on the vertical plate.

3. The mechanical lock structure of the lift cage door according to claim 2, characterized in that: A pair of first travel switches electrically connected to the electromagnetic push rod are provided on the fixing plate and on one side of the extension push rod. A touch plate cooperating with the first travel switch is sleeved on the extension push rod.

4. The mechanical lock structure of the lift cage door according to claim 1, characterized in that: The positioning plate is rotatably connected to the upper cage door.

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