Firefighter elevator car door system

Abstract

The utility model discloses a firefighter elevator car door system, which is characterized in that a bottom plate assembly is arranged on a door machine and is positioned at the door opening edge of the door machine, a rotating plate assembly and a catch wheel assembly are respectively arranged on the bottom plate assembly, a rotating plate of the rotating plate assembly rotates around a shaft of the rotating plate assembly, and a catch wheel of the catch wheel assembly is positioned on the rotation track of the rotating plate. The rotating plate is pressed on the catch wheel; a protruding part and a tension spring connecting part are arranged on the rotating plate and located on the two sides of a shaft of the rotating plate assembly respectively, the end of one side of the tension spring is hooked to the tension spring connecting part of the rotating plate, and the end of the other side of the tension spring is hooked to a bolt fastening assembly installed on the bottom plate assembly. The protruding part of the rotating plate extends into the rolling wheel movement track of a rolling wheel assembly connected with the car door. The technical problem of keeping the door opening force of the door motor of the fireman elevator through a mechanical structure is solved. The car door can be kept to be completely opened by controlling the rotation resisting torque of the door motor, and the door opening force of the door machine can be kept through a mechanical structure.

Description

Technical Field

[0001] The utility model relates to an elevator car door system, in particular to a firefighter elevator car door system. Background Art

[0002] According to the relevant provisions of Chapter 5.8.7 of the "Safety Specifications for the Manufacturing and Installation of Firefighter Elevators" GB / T26456-2021: After reaching the firefighter entrance floor, the firefighter elevator should stop at that floor, and the car door and floor door on the side of the firefighter elevator switch should be kept in the fully open position.

[0003] In the prior art, the firefighter elevator door motor's anti-rotation torque is controlled to keep the elevator door fully open, but there is no additional mechanical guarantee structure, resulting in the need for further rationalization and improvement of the structure.

[0004] Therefore, the present utility model is proposed. Summary of the Invention

[0005] The purpose of the utility model is to solve the above-mentioned deficiencies of the prior art and to provide a firefighter elevator door system that can maintain the door opening force of the firefighter elevator door machine through a mechanical structure, thereby improving the safety level.

[0006] To achieve the above-mentioned purpose, the utility model is designed to provide a firefighter elevator car door system, comprising a door machine and a car door, wherein a base plate assembly is mounted on the door machine and is located at the door opening edge of the door machine, and a rotating plate assembly and a blocking wheel assembly are respectively mounted on the base plate assembly, wherein the rotating plate of the rotating plate assembly rotates about its axis, and the blocking wheel of the blocking wheel assembly is located on the rotation trajectory of the rotating plate, and the rotating plate presses on the blocking wheel;

[0007] The rotating plate is provided with a protrusion and a tension spring connection portion, and is respectively located on both sides of the axis of the rotating plate assembly. One end of the tension spring is hooked on the tension spring connection portion of the rotating plate, and the other end is hooked on the bolt fastening assembly installed on the base plate assembly.

[0008] The protrusion of the rotating plate extends into the roller motion track of the roller assembly connected to the car door, and the roller of the roller assembly contacts the protrusion of the rotating plate in the door opening direction. At this time, the force applied by the roller to the protrusion drives the rotating plate to rotate away from the blocking wheel of the blocking wheel assembly, and the tension spring is synchronously stretched until the roller passes the lowest point of the protrusion. At this time, the restoring force of the tension spring drives the rotating plate to synchronously reset and press on the blocking wheel again.

[0009] The above-mentioned firefighter elevator car door system has a structure in which the car door and roller assembly are preferably installed in the following manner:

[0010] The shaft of the roller assembly is mounted on the door hanging plate of the car door through a bracket plate.

[0011] The roller assembly installation structure in the preferred technical solution is simple. Furthermore, considering that the car door's door hanger plate is closer to the door operator, installing the roller assembly on the door hanger plate can help shorten the extension length of the bracket plate. This helps improve the bracket plate's structural strength without changing its thickness, thereby enhancing the stability of the roller assembly's installation structure. Of course, in actual structural design, the bracket plate can also be installed in other locations on the car door, such as the door panel.

[0012] The firefighter elevator car door system operates on the following principles:

[0013] When the cam is in the open position, the spring will automatically retract and the roller will automatically retract, causing the cam to retract and the roller to retract, and the cam will automatically retract and the roller will retract, causing the cam to retract and the roller to retract, thus freeing the cam from sliding onto the cam.

[0014] When the cam is in the closed position, the spring will be pulled back to move the door opener so that the cam will not move and the spring will not rotate.

[0015] Compared with the prior art, the firefighter elevator door system obtained by the present invention has the following technical effects:

[0016] The utility model provides a firefighter elevator car door system, which can not only keep the car door fully open by controlling the anti-rotation torque of the firefighter elevator door motor, but also adds a mechanical protection structure in the structural design, that is, it can maintain the door opening force of the firefighter elevator door machine through the mechanical structure, thereby improving the safety level and resulting in further rationalization and improvement of the structure.

[0017] The utility model relates to a firefighter elevator car door system. When the elevator door machine opens to a certain position and the door motor loses power during use, the car door can still keep the door open. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of a firefighter elevator door system;

[0019] Figure 2 yes Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0020] Figure 3 This is a schematic diagram of the mechanical structure that maintains the door opening force of the firefighter elevator door machine;

[0021] Figure 4 This is a schematic diagram of the mechanical structure principle that maintains the door opening force of the firefighter elevator door machine Figure 1 ;

[0022] Figure 5 This is a schematic diagram of the mechanical structure principle that maintains the door opening force of the firefighter elevator door machine Figure 2 .

[0023] In the figure: door machine 1, car door 2, hanging door hanging plate 2-1, bottom plate assembly 3, rotating plate assembly 4, rotating plate 4-1, protrusion 4-1-1, tension spring connecting part 4-1-2, stopper wheel assembly 5, stopper wheel 5-1, tension spring 6, bolt fastening assembly 7, roller assembly 8, roller 8-1, bracket plate 9. DETAILED DESCRIPTION

[0024] 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 are within the scope of protection of the present invention.

[0025] like Figure 1-3 As shown, as an embodiment of the present invention, a firefighter elevator car door system provided in this embodiment includes a door machine 1 and a car door 2. A base plate assembly 3 is installed on the door machine 1 and is located at the door opening side of the door machine 1. A rotating plate assembly 4 and a stopper wheel assembly 5 are respectively installed on the base plate assembly 3. The rotating plate 4-1 of the rotating plate assembly 4 rotates around its axis, and the stopper wheel 5-1 of the stopper wheel assembly 5 is located on the rotation trajectory of the rotating plate 4-1, and the rotating plate 4-1 presses on the stopper wheel 5-1.

[0026] The rotating plate 4-1 is provided with a protrusion 4-1-1 and a tension spring connection part 4-1-2, and they are respectively located on both sides of the axis of the rotating plate assembly 4. One end of the tension spring 6 is hooked on the tension spring connection part 4-1-2 of the rotating plate 4-1, and the other end is hooked on the bolt fastening assembly 7 installed on the base plate assembly 3;

[0027] The protrusion 4-1-1 of the rotating plate 4-1 extends into the motion track of the roller 8-1 of the roller assembly 8 connected to the car door 2, and the roller 8-1 of the roller assembly 8 contacts the protrusion 4-1-1 of the rotating plate 4-1 in the door opening direction. Figure 4As shown, at this time, the force applied by the roller 8-1 to the protrusion 4-1-1 drives the rotating plate 4-1 to rotate away from the blocking wheel 5-1 of the blocking wheel assembly 5, and the tension spring 6 is synchronously stretched until the roller 8-1 passes the lowest point B of the protrusion 4-1-1. At this time, the restoring force of the tension spring 6 drives the rotating plate 4-1 to synchronously reset and re-press on the blocking wheel 5-1, as shown in FIG. Figure 5 shown.

[0028] The specific installation structure of the car door 2 and the roller assembly 8 in this embodiment is as follows: the shaft of the roller assembly 8 is installed on the door hanging plate 2 - 1 of the car door 2 through the bracket plate 9 .

[0029] Therefore, the installation structure of the roller assembly 8 is simple, and considering that the door hanging plate 2-1 of the car door 2 is closer to the door machine 1, by installing the roller assembly 8 on the door hanging plate 2-1, it is possible to shorten the extension length of the bracket plate 9. Without changing the thickness of the bracket plate 9, it is possible to improve the structural strength of the bracket plate 9 and thus improve the installation structure stability of the roller assembly 8. Of course, in actual structural design, the bracket plate 9 can also be installed in other parts of the car door 2, such as the door panel of the car door 2.

[0030] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. A firefighter elevator car door system, comprising a door machine and a car door, characterized in that: A bottom plate assembly is installed on the door machine and is located at the door opening side of the door machine. A rotating plate assembly and a blocking wheel assembly are respectively installed on the bottom plate assembly. The rotating plate of the rotating plate assembly rotates around its axis. The blocking wheel of the blocking wheel assembly is located on the rotation track of the rotating plate, and the rotating plate presses on the blocking wheel. The rotating plate is provided with a protrusion and a tension spring connection portion, and is respectively located on both sides of the axis of the rotating plate assembly. One end of the tension spring is hooked on the tension spring connection portion of the rotating plate, and the other end is hooked on the bolt fastening assembly installed on the base plate assembly. The protrusion of the rotating plate extends into the roller motion track of the roller assembly connected to the car door, and the roller of the roller assembly contacts the protrusion of the rotating plate in the door opening direction. At this time, the force applied by the roller to the protrusion drives the rotating plate to rotate away from the blocking wheel of the blocking wheel assembly, and the tension spring is synchronously stretched until the roller passes the lowest point of the protrusion. At this time, the restoring force of the tension spring drives the rotating plate to synchronously reset and press on the blocking wheel again.

2. A firefighter elevator door system according to claim 1, characterized in that The specific installation structure of the car door and roller assembly is as follows: The shaft of the roller assembly is mounted on the door hanging plate of the car door through a bracket plate.

Images