CN219469405U - A new self-weight door lock - Google Patents

Abstract

The utility model discloses a novel self-weight door lock, which comprises a bottom cage door vertical beam and a limit strike iron installed on the hanging cage; a self-weight door lock main body and a door lock ear plate installed on the bottom cage; The main body of the self-weight door lock is installed on the ear plate of the door lock through bearings; one end of the main body of the self-weight door lock is equipped with a self-weight roller, and the other end is provided with a locking rod; the center of gravity G of the main body of the self-weight door lock is on one side of the bearing. In the utility model, the force required for reset is changed from the spring to the gravity, thus eliminating the potential safety hazard of the elevator operation caused by the failure of the spring.

Description

A new self-weight door lock

technical field

The utility model relates to a novel self-weight door lock, which belongs to the technical field of self-locking devices for tower crane bottom cages.

Background technique

The door lock of the bottom cage door is a mechanical automatic interlocking device between the elevator cage and the bottom cage. , the cage rises, the bottom cage door lock is reset by the spring, and the bottom cage door is automatically locked to prevent unrelated personnel from entering the bottom cage when the elevator is running. Therefore, the bottom cage door lock is an important measure to ensure the safe operation of the elevator.

As shown in Figure 1, when the existing bottom cage door is opened, the spring 12 is squeezed by the limit striker 30 installed on the hanging cage through the unlocking roller 11 on the main body of the closed door lock 10, and the front part of the main body of the closed door lock 10 is warped. When the bottom cage door vertical beam 20 is not clamped, the bottom cage door is opened; when the closed door lock body 10 is closed, the cage rises, the limit striker 30 rises with the cage rise, the spring 12 resets, and the door is closed The lock main body 10 clamps the bottom cage door and closes. It can be seen that the key point of this type of door lock is the spring. The construction site environment is complex, the elevator door lock is used frequently, and the bottom cage is completely exposed to the outside world. The high frequency can easily lead to the failure of the 2.2mm thick spring on the bottom cage door lock, which increases the safety risk during the operation of the elevator and causes an increase in elevator safety accidents.

Contents of the invention

In order to overcome the deficiencies of the above-mentioned prior art, the utility model provides a self-weight door lock body by adjusting the center of gravity of the self-weight door lock body, so that whether the body of the self-weight door lock is in the closed state or in the open state, the center of gravity of the self-weight door lock body is located on the side of its rotation center. , specifically a new type of self-weight door lock.

The utility model is realized through the following technical proposals. A new type of self-weight door lock includes a vertical beam of the bottom cage door and a limit strike iron installed on the hanging cage; it includes a main body of the self-weight door lock and a door lock ear plate;

The main body of the self-weight door lock is installed on the ear plate of the door lock through bearings;

One end of the main body of the self-weight door lock is equipped with a self-weight roller, and the other end is provided with a lock bar;

The center of gravity G of the main body of the self-weight door lock is on one side of the bearing.

As a preferred solution of a new self-weight door lock described in the utility model: the vertical beam of the bottom cage door is provided with a self-locking hole matching the lock bar.

As a preferred solution of a new self-weight door lock described in the present invention: when the main body of the self-weight door lock is in the open state, its center of gravity G is on the horizontal line passing through the center of the bearing.

As a preferred solution of a new self-weight door lock described in the present invention: when the main body of the self-weight door lock is in the locked state, its center of gravity G is below the horizontal line passing through the center of the bearing.

As a preferred solution of a new self-weight door lock described in the present invention: the angle A between the line passing through the center of gravity G of the main body of the self-weight door lock and the center of the bearing and the horizontal line passing through the center of the bearing is 10.4°.

Beneficial effects of the utility model: the utility model changes the force required for resetting from the spring to the gravity, thus eliminating the potential safety hazard of the lift that may be caused by the failure of the spring.

Description of drawings

Fig. 1 is the schematic diagram of existing bottom cage mechanical automatic interlocking device;

Fig. 2 is a structural representation of the utility model;

Fig. 3 is a schematic diagram of the gravity position of the main body of the self-weight door lock;

Fig. 4 is the practical schematic diagram of the utility model;

In the figure: 10-closed door lock main body; 11-unlocking roller; 12-spring; 20-bottom cage door vertical beam; 21-self-locking hole; Roller; 42-door lock ear plate; 43-bearing; 44-lock bar.

Detailed ways

In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

Second, "one embodiment" or "an embodiment" referred to herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

Referring to Figures 1-4, as the first embodiment of the present invention, a new type of self-weight door lock is provided, including a bottom cage door vertical beam 20 and a limit striker 30 installed on the cage; including a self-weight door lock The main body 40 and the door lock ear plate 42 installed on the bottom cage;

The self-weight door lock body 40 is installed on the door lock ear plate 42 through a bearing 43;

One end of the deadweight door lock main body 40 is provided with a deadweight roller 41, and the other end is provided with a lock bar 44;

The center of gravity G of the deadweight door lock main body 40 is on one side of the bearing 43 .

The bottom cage door vertical beam 20 is provided with a self-locking hole 21 matching the locking bar 44 .

When the self-weight door lock main body 40 is in the open state, its center of gravity G is on the horizontal line passing through the center of the bearing 43 .

When the self-weight door lock main body 40 is in the locked state, its center of gravity G is below the horizontal line passing through the center of the bearing 43 .

The included angle A between the line connecting the center of gravity G of the deadweight door lock body 40 and the center of the bearing 43 and the horizontal line passing through the center of the bearing 43 is 10.4°.

Specifically, the center of gravity G of the deadweight door lock body 40 is located on one side of the bearing rotation center, and the rotation angle of the deadweight door lock body 40 around the center of the bearing 43 between the opening and closing of the door lock is 10.4°. When the cage falls to the bottom, the limit The striker 30 is in contact with the self-weight roller 41, and the slope setting of the limit striker 30 makes the self-weight roller 41 move inward, the lock bar 44 leaves the self-locking hole 21, and the bottom cage door can be opened;

When the hoisting cage rises, the limit striker 30 rises accordingly. Since the center of gravity G of the self-weight door lock body 40 is located behind the rotation center of the bearing 43, the self-weight door lock body 40 automatically resets under the action of gravity, and the lock rod 44 is inserted into the self-locking hole. 21, the bottom cage door was locked.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (5)

1. A new type of self-weight door lock, including the vertical beam (20) of the bottom cage door and the limit iron (30) installed on the cage; it is characterized in that: it includes the main body of the self-weight door lock (40) and is installed on the The door lock lug (42) on the bottom cage; The self-weight door lock body (40) is mounted on the door lock ear plate (42) through a bearing (43); One end of the self-weight door lock body (40) is equipped with a self-weight roller (41), and the other end is provided with a locking rod (44); The center of gravity G of the self-weight door lock body (40) is on one side of the bearing (43). 2. A new type of self-weight door lock according to claim 1, characterized in that: the bottom cage door vertical beam (20) is provided with a self-locking hole (21) matching the locking rod (44). 3. A new type of self-weight door lock according to claim 1, characterized in that: when the body of the self-weight door lock (40) is in an open state, its center of gravity G is on the horizontal line passing through the center of the bearing (43). 4. A new type of self-weight door lock according to claim 1, characterized in that: when the main body (40) of the self-weight door lock is in the locked state, its center of gravity G is below the horizontal line passing through the center of the bearing (43) . 5. A new type of self-weight door lock according to claim 4, characterized in that: the line passing through the center of gravity G of the self-weight door lock body (40) and the center of the bearing (43) and the bearing (43) The angle A between the horizontal line in the center is 10.4°.