Elevator pit door opening device

Abstract

The utility model relates to an elevator pit door opening device, which belongs to the technical field of elevators, and comprises a wall body and a pit landing door, a door opening adjusting mechanism is arranged in the wall body, and the door opening adjusting mechanism comprises a mounting plate which is arranged at the top of the pit landing door and is in sliding connection with the wall body; an elevator door lock is installed on the side, away from the wall body, of the installation plate, and a fixing plate is fixedly connected to the inner side of the wall body. According to the elevator pit door opening device, the shifting hook lock on the movable plate can be matched with an elevator door lock to keep normal use of a pit landing door, the pull rope can be pulled through the pull handle, the pull rope drives the shifting hook lock on the movable plate to be separated from the elevator door lock, and therefore the elevator door lock loses the locking function; and the pit landing door can be opened from the interior of the elevator pit, so that the pit landing door is convenient to open and close when the elevator pit is maintained, and the purposes of improving the use safety of the device and enhancing the working efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an elevator pit door opening device. Background Art

[0002] The elevator pit is the part of the shaft located below the lowest floor station served by the car. It is an important part of elevator maintenance. Its structure should be able to withstand the compressive strength of the reaction force when the car or counterweight collides with the buffer. The elevator pit is equipped with buffers, elevator stop switches, shaft light switches, power sockets and lighting; there is also a pit door for maintenance personnel to enter.

[0003] When maintaining the elevator pit, since the elevator floor doors in the prior art are not convenient to open from the inside, it is usually necessary to use a door-lifting device to lock the elevator door to keep the elevator door in an open state. This method is likely to cause the door-lifting device to fall off in poor lighting conditions or when pedestrians are not paying attention, causing the elevator door to close, which poses certain safety hazards and is not practical. In view of this, the present application proposes an elevator pit door opening device. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides an elevator pit door opening device, which has the advantages of ensuring the normal use of the elevator pit floor door and enabling the pit floor door to be opened from the inside of the elevator pit, so as to improve its safety and practicality, enhance maintenance work efficiency, etc. It solves the problems in the existing technology that the elevator floor door is not convenient to open from the inside, the staff are easily trapped when maintaining the elevator pit, there are certain safety hazards, and the practicability is poor.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an elevator pit door opening device, comprising a wall and a pit floor door, wherein a door opening adjustment mechanism is provided inside the wall;

[0006] The door opening adjustment mechanism includes a mounting plate mounted on the top of the pit floor door and slidably connected to the wall, an elevator door lock is mounted on the side of the mounting plate away from the wall, a fixed plate is fixedly connected to the inner side of the wall, two limiting sliding rods are slidably connected to the interior of the fixed plate, and a movable plate is fixedly connected to the side of the limiting sliding rod close to the elevator door lock;

[0007] The outer side of the limiting slide rod is sleeved with an extrusion spring fixedly connected to the movable plate and the fixed plate. A shift hook lock corresponding to the position of the elevator door lock is installed on the side of the movable plate away from the limiting slide rod. An adjustment component for adjusting the position of the movable plate is provided inside the fixed plate.

[0008] Furthermore, a limiting slider is fixedly connected to one side of the mounting plate close to the wall, and a limiting sliding groove slidably matched with the limiting slider is provided inside the wall.

[0009] Furthermore, the fixed plate is L-shaped, and the side of the limiting sliding rod away from the movable plate is fixedly connected to the limiting block.

[0010] Furthermore, the adjustment assembly includes a pull rope fixedly connected to the side of the movable plate away from the shift hook lock, and a wire structure for guiding the movement of the pull rope is provided on the side of the fixed plate away from the movable plate. A mounting block is installed on the inner side of the wall, and the bottom of the mounting block is movably connected to a handle fixedly connected to the pull rope.

[0011] Furthermore, the conductor structure includes a first guide roller installed inside the fixed plate, a lead drum fixedly connected to a side of the fixed plate away from the movable plate, and a second guide roller.

[0012] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0013] The elevator pit door opening device can not only make the shift hook lock on the movable plate cooperate with the elevator door lock to maintain the normal use of the pit floor door, but also can use the handle to pull the pull rope, so that the pull rope drives the shift hook lock on the movable plate to disengage from the elevator door lock, so that the elevator door lock loses its locking effect, allowing the pit floor door to be opened from the inside of the elevator pit, thereby facilitating the opening and closing of the pit floor door during maintenance of the elevator pit, thereby achieving the purpose of improving the safety of the device and enhancing work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0015] Figure 2 This is a side view of the structure of the elevator door lock of the utility model;

[0016] Figure 3 It is a schematic diagram of the partial structure of the fixed plate and wall of the utility model.

[0017] In the figure: 1. Wall; 2. Pit floor door; 3. Mounting plate; 4. Elevator door lock; 5. Fixed plate; 6. Movable plate; 7. Shift hook lock; 8. Limiting slide bar; 9. Extrusion spring; 10. Pull rope; 11. First guide roller; 12. Lead reel; 13. Second guide roller; 14. Mounting block; 15. Handle. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figures 1 to 3 An elevator pit door opening device in this embodiment includes a wall 1 and a pit floor door 2, and a door opening adjustment mechanism is provided inside the wall 1.

[0020] In this embodiment, the door opening adjustment mechanism includes a mounting plate 3 installed on the top of the pit floor door 2 and slidingly connected to the wall 1. The mounting plate 3 is fixedly connected to a limiting slider on the side close to the wall 1. A limiting slide groove is provided inside the wall 1 and is adapted to the sliding of the limiting slide groove. It is convenient to utilize the cooperation between the limiting slide groove and the limiting slide groove to make the pit floor door 2 move close to the pit entrance of the wall 1.

[0021] Among them, an elevator door lock 4 is installed on the side of the mounting plate 3 away from the wall 1. The elevator door lock 4 is a structure disclosed in the prior art and consists of a static lock hook, a dynamic lock hook, a roller and a safety contact. In this embodiment, a fixed plate 5 is fixedly connected to the inner side of the wall 1. The fixed plate 5 is L-shaped, and two limit slide rods 8 are slidably connected to the inside of the fixed plate 5. The limit slide rod 8 is fixedly connected to a limit block on the side away from the movable plate 6, which makes it convenient to use the limit block to prevent the limit slide rod 8 from detaching from the fixed plate 5.

[0022] In this embodiment, a movable plate 6 is fixedly connected to the side of the limiting slide bar 8 close to the elevator door lock 4, and an extrusion spring 9 fixedly connected to the movable plate 6 and the fixed plate 5 is sleeved on the outer side of the limiting slide bar 8. A shift hook lock 7 corresponding to the position of the elevator door lock 4 is installed on the side of the movable plate 6 away from the limiting slide bar 8, so that the static lock hook in the original elevator door lock 4 can be replaced by the shift hook lock 7, so that the locking state of the elevator door lock 4 when the pit floor door 2 is closed can be changed by adjusting the position of the shift hook lock 7. An adjustment component for adjusting the position of the movable plate 6 is provided inside the fixed plate 5.

[0023] Among them, the adjustment component includes a pull rope 10 fixedly connected to the side of the movable plate 6 away from the shift hook lock 7, and a wire structure for guiding the movement of the pull rope 10 is provided on the side of the fixed plate 5 away from the movable plate 6. A mounting block 14 is installed on the inner side of the wall 1, and a handle 15 fixedly connected to the pull rope 10 is movably connected to the bottom of the mounting block 14, so that the pull rope 10 can be driven to move by the handle 15, so that the pull rope 10 can drive the movable plate 6 to move.

[0024] Among them, the wire structure includes a first guide roller 11 installed inside the fixed plate 5, a lead roller 12 fixedly connected to the side of the fixed plate 5 away from the movable plate 6, and a second guide roller 13, which facilitates the use of the wire structure to guide the pull rope 10 led out from the movable plate 6 to the handle 15, and uses the roller structure to reduce the damage caused by friction during the movement of the pull rope 10.

[0025] The beneficial effects of the above embodiment are:

[0026] The elevator pit door opening device not only enables the shift hook lock 7 on the movable plate 6 to cooperate with the elevator door lock 4 to maintain the normal use of the pit floor door 2, but also can use the handle 15 to pull the pull rope 10, so that the pull rope 10 drives the shift hook lock 7 on the movable plate 6 to disengage from the elevator door lock 4, so that the elevator door lock 4 loses its locking effect, allowing the pit floor door 2 to be opened from the inside of the elevator pit, thereby making it convenient to open and close the pit floor door 2 when performing maintenance on the elevator pit, thereby achieving the purpose of improving the safety of the device and enhancing work efficiency.

[0027] The working principle of the above embodiment is:

[0028] When the elevator pit door opening device is in use, the movable plate 6 can drive the shift hook lock 7 to move toward the wall 1 under the push of the extrusion spring 9, so that the elevator door lock 4 can cooperate with the shift hook lock 7 to maintain the normal opening and closing of the pit floor door 2. When the staff performs maintenance operations in the elevator pit, the staff can pull the pull rope 10 through the handle 15 so that the pull rope 10 drives the shift hook lock 7 on the movable plate 6 to disengage from the elevator door lock 4, thereby making the elevator door lock 4 lose its locking effect, so that the pit floor door 2 can be opened from the inside of the elevator pit, thereby effectively improving the safety of the device.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator pit door opening device, comprising a wall (1) and a pit floor door (2), characterized in that: A door opening adjustment mechanism is provided inside the wall (1); The door opening adjustment mechanism comprises a mounting plate (3) mounted on the top of the pit floor door (2) and slidably connected to the wall (1); an elevator door lock (4) is mounted on the side of the mounting plate (3) away from the wall (1); a fixing plate (5) is fixedly connected to the inner side of the wall (1); two limiting slide bars (8) are slidably connected inside the fixing plate (5); and a movable plate (6) is fixedly connected to the side of the limiting slide bar (8) close to the elevator door lock (4); The outer side of the limiting slide bar (8) is sleeved with an extrusion spring (9) fixedly connected to the movable plate (6) and the fixed plate (5); a shift hook lock (7) corresponding to the position of the elevator door lock (4) is installed on the side of the movable plate (6) away from the limiting slide bar (8); and an adjustment component for adjusting the position of the movable plate (6) is provided inside the fixed plate (5).

2. The elevator pit door opening device according to claim 1, characterized in that: The side of the mounting plate (3) close to the wall (1) is fixedly connected to a limiting slider, and the interior of the wall (1) is provided with a limiting sliding groove that is slidably matched with the limiting slider.

3. The elevator pit door opening device according to claim 1, characterized in that: The fixed plate (5) is L-shaped, and the side of the limiting slide rod (8) away from the movable plate (6) is fixedly connected to the limiting block.

4. The elevator pit door opening device according to claim 1, characterized in that: The adjustment assembly includes a pull rope (10) fixedly connected to the side of the movable plate (6) away from the shift hook lock (7), a wire structure for guiding the movement of the pull rope (10) is provided on the side of the fixed plate (5) away from the movable plate (6), and a mounting block (14) is installed on the inner side of the wall (1), and the bottom of the mounting block (14) is movably connected to a handle (15) fixedly connected to the pull rope (10).

5. The elevator pit door opening device according to claim 4, characterized in that: The wire structure comprises a first guide roller (11) installed inside the fixed plate (5), a lead drum (12) fixedly connected to a side of the fixed plate (5) away from the movable plate (6), and a second guide roller (13).

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