Elevator overhaul locking device

Abstract

The utility model discloses an elevator maintenance locking device which comprises a base, a locking pin is arranged on the base in a left-right moving mode, the base is provided with a limiting shell, the limiting shell is provided with a guide groove, and a first locking groove and a second locking groove which are communicated with the guide groove are formed in the limiting shell in a left-right spaced mode. The locking pin is connected with a locking deflector rod, and the locking deflector rod is arranged in the guide groove in a left-right sliding mode; the locking deflector rod can slide into the first locking groove or the second locking groove so as to restrain the left-right movement of the locking pin; the locking deflector rod is connected with a locking element which is mutually locked with the limiting shell; the locking element restrains the locking deflector rod and prevents the locking deflector rod from being separated from the first locking groove or the second locking groove. Under the locking action of the locking element, the left-right movement of the locking pin can be restrained, so that the possibility that the locking pin is loosened from the interior of the locking element is prevented, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator maintenance technology, and in particular to an elevator maintenance locking device. Background Technology

[0002] When performing elevator maintenance, according to legal regulations, when maintenance or inspection of the machine needs to be carried out from the top of the car, a mechanical locking device must be installed to prevent potential danger to maintenance or inspection personnel in the event of the car going out of control or moving unexpectedly.

[0003] Existing mechanical locking devices consist of a sliding locking pin on the car frame and a locking element in the hoistway or car guide rail. The locking pin moves left and right to insert into the locking element to achieve locking. A technical problem with this locking method is that the sliding locking pin cannot restrict its left and right movement, making it prone to loosening from the locking element. Further improvements are needed. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an elevator maintenance locking device.

[0005] An elevator maintenance locking device designed for this purpose includes a base, a locking pin that moves left and right on the base, a limiting housing on the base, a guide groove on the limiting housing, and a first locking groove and a second locking groove that are inter-connected to the guide groove on the limiting housing at intervals on the left and right.

[0006] The locking pin is connected to a locking lever, which is slidably disposed in the guide groove.

[0007] The locking lever can slide into the first locking groove or the second locking groove to restrain the locking pin from moving left and right;

[0008] The locking lever is connected to a locking element that locks with the limiting housing;

[0009] The locking element constrains the locking lever to prevent it from disengaging from the first locking slot or the second locking slot.

[0010] Preferably, the first locking groove includes a first connecting groove that communicates with the guide groove, and a second connecting groove is connected to the end of the first connecting groove that is away from the guide groove.

[0011] The first connecting groove and the second connecting groove are arranged in an L-shape;

[0012] The first connecting groove and the guide groove are arranged in a T-shape;

[0013] The locking lever can be guided through the guide groove and enter the second connecting groove through the first connecting groove to form a limiting constraint.

[0014] Preferably, the second locking groove includes a third connecting groove that communicates with the guide groove, and the end of the third connecting groove away from the guide groove is connected to a fourth connecting groove.

[0015] The third connecting groove and the fourth connecting groove are arranged in an L-shape;

[0016] The third connecting groove and the guide groove are arranged in a T-shape;

[0017] The locking lever can be guided through the guide groove and enter the fourth connecting groove through the third connecting groove to form a limiting constraint.

[0018] Preferably, the locking element includes a locking nut that is threadedly connected to the locking lever, and the locking nut abuts against the surface of the limiting housing.

[0019] Preferably, the base is provided with a micro switch that senses contact with the locking pin;

[0020] The locking pin has at least one annular groove.

[0021] Compared with the prior art, the locking lever of this invention can slide into the first locking groove or the second locking groove to restrain the left and right movement of the locking pin; the locking lever is connected to a locking element that locks with the limiting housing; the locking element restrains the locking lever to prevent it from disengaging from the first locking groove or the second locking groove. Under the locking action of the locking element, this invention can restrain the left and right movement of the locking pin to prevent the possibility of the locking pin loosening from the locking member, thereby improving safety. Attached Figure Description

[0022] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model;

[0023] Figure 2 This is the second three-dimensional structural schematic diagram of the present invention;

[0024] Figure 3 This is one of the three-dimensional structural diagrams of the sedan chair frame;

[0025] Figure 4 This is the second schematic diagram of the three-dimensional structure of the sedan chair frame. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] See Figures 1-4An elevator maintenance locking device includes a base 10, a locking pin 20 that is movably mounted on the base 10, a limiting housing 30 provided on the base 10, a guide groove 30 provided on the limiting housing 30, and a first locking groove 310 and a second locking groove 320 that are spaced apart on the limiting housing 30 and communicate with the guide groove 300; the locking pin 20 is connected to a locking lever 40, which is slidably mounted on the guide groove 300; the locking lever 40 can slide into the first locking groove 310 or the second locking groove 320 to constrain the lateral movement of the locking pin 20; the locking lever 40 is connected to a locking element 50 that locks with the limiting housing 30; the locking element 50 constrains the locking lever 40 to prevent it from disengaging from the first locking groove 310 or the second locking groove 320.

[0028] Under the action of the first locking groove 310 or the second locking groove 320, this utility model can constrain the left and right movement of the locking lever 40, thereby limiting the left and right movement of the locking pin 20. At the same time, under the action of the locking element 50, it can further constrain the locking lever 40 from disengaging from the first locking groove 310 or the second locking groove 320, so as to prevent the locking element 50 from disengaging from the first locking groove 310 or the second locking groove 320.

[0029] See Figure 1 The first locking groove 310 includes a first connecting groove 311 that communicates with the guide groove 300. The end of the first connecting groove 311 away from the guide groove 300 is connected to a second connecting groove 312. The first connecting groove 311 and the second connecting groove 312 are arranged in an L-shape. The first connecting groove 311 and the guide groove 300 are arranged in a T-shape. The locking lever 40 can enter the second connecting groove 312 from the guide groove 300 through the first connecting groove 311 to form a limiting constraint.

[0030] When the locking pin 20 needs to be constrained, the locking lever 40 is operated to rotate the locking pin 20 so that it is engaged in the first connecting groove 311 until the locking lever 40 moves to the end of the first connecting groove 311 away from the guide groove 300. Then the locking lever 40 is moved to the left to drive the locking lever 40 into the second connecting groove 312 to achieve the limiting constraint.

[0031] See Figure 1The second locking groove 320 includes a third connecting groove 321 that communicates with the guide groove 300. The end of the third connecting groove 321 away from the guide groove 300 is connected to a fourth connecting groove 322. The third connecting groove 321 and the fourth connecting groove 322 are arranged in an L-shape. The third connecting groove 321 and the guide groove 300 are arranged in a T-shape. The locking lever 40 can enter the fourth connecting groove 322 from the guide groove 300 through the third connecting groove 321 to form a limiting constraint.

[0032] In this utility model, the first locking groove 310 is a locking limit constraint groove, and the second locking groove 320 is an unlocking limit constraint groove.

[0033] See Figure 1 The locking element 50 includes a locking nut threadedly connected to the locking lever 40, the locking nut abutting against the surface of the limiting housing 30. This is achieved by friction locking between the tightened locking nut and the limiting housing 30, preventing the locking lever 40 from moving relative to the second communicating groove 312 or the fourth communicating groove 322.

[0034] See Figure 2 The base 10 is provided with a micro switch 60 that contacts and senses the locking pin 20; the locking pin 20 is provided with at least one annular groove 200. The sensing end of the micro switch 60 contacts and senses the surface of the locking pin 20. When it moves to the annular groove 200, since there is nothing to trigger the sensing end of the micro switch 60, a position determination is performed.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An elevator maintenance locking device, comprising a base (10), wherein a locking pin (20) is provided on the base (10) for left and right movement, characterized in that: The base (10) is provided with a limiting housing (30), the limiting housing (30) is provided with a guide groove (300), and the limiting housing (30) is provided with a first locking groove (310) and a second locking groove (320) that are connected to the guide groove (300) at intervals on the left and right. The locking pin (20) is connected to a locking lever (40), which is slidably disposed in the guide groove (300). The locking lever (40) can slide into the first locking groove (310) or the second locking groove (320) to restrain the locking pin (20) from moving left and right; The locking lever (40) is connected to a locking element (50) that is locked to the limiting housing (30); The locking element (50) constrains the locking lever (40) to prevent it from disengaging from the first locking slot (310) or the second locking slot (320).

2. The elevator maintenance locking device according to claim 1, characterized in that: The first locking groove (310) includes a first connecting groove (311) that communicates with the guide groove (300), and a second connecting groove (312) is connected to one end of the first connecting groove (311) away from the guide groove (300). The first connecting groove (311) and the second connecting groove (312) are arranged in an L-shape; The first connecting groove (311) and the guide groove (300) are arranged in a T-shape; The locking lever (40) can enter the second connecting groove (312) through the guide groove (300) via the first connecting groove (311) to form a limiting constraint.

3. The elevator maintenance locking device according to claim 1, characterized in that: The second locking groove (320) includes a third connecting groove (321) that communicates with the guide groove (300), and the end of the third connecting groove (321) away from the guide groove (300) is connected to a fourth connecting groove (322); The third connecting groove (321) and the fourth connecting groove (322) are arranged in an L-shape; The third connecting groove (321) and the guide groove (300) are arranged in a T-shape; The locking lever (40) can enter the fourth connecting groove (322) through the guide groove (300) via the third connecting groove (321) to form a limiting constraint.

4. The elevator maintenance locking device according to claim 1, characterized in that: The locking element (50) includes a locking nut that is threadedly connected to the locking lever (40) and abuts against the surface of the limiting housing (30).

5. The elevator maintenance locking device according to claim 1, characterized in that: The base (10) is provided with a micro switch (60) that is in contact with the locking pin (20); The locking pin (20) is provided with at least one annular groove (200).

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