Isolator operating mechanism based on mechanical stop

Abstract

The utility model relates to elevator control cabinet technical field, concretely relates to the isolation device operating mechanism based on mechanical baffle limit, including motor isolator, brake isolator and the mechanical baffle that follows motor isolator handle movement, the mechanical baffle is composed by main panel, fixed ferrule and side baffle, the fixed ferrule is located main panel bottom and is fixedly sleeved on the handle of motor isolator, the side baffle is located main panel one end and extends to the handle of brake isolator along fixed ferrule axis direction, the side baffle is located brake isolator closing side. This technical scheme can disconnect motor isolator and brake isolator simultaneously through mechanical baffle, and the operation frequency is reduced, and when the maintenance personnel end work slow -running and leave the work site, avoid the dangerous state that motor isolator is in the disconnected and brake isolator is in the closed, avoid the danger of starting to slip car.

Description

Technical Field

[0001] This utility model relates to the field of elevator control cabinet technology, specifically to an isolation device operating mechanism based on mechanical baffle limiting. Background Technology

[0002] In the current technological context, machine-room-less elevators use a 3P isolating switch to cut off the power supply to the control cabinet. If the elevator drive adopts a self-learning-free mode, it will perform an automatic tuning during its first run after a power outage and subsequent power restoration. If such a system uses a power-off isolation method, when the elevator slows down to leave the work site after finishing the operation, it may slip without self-learning. Therefore, it is not advisable to cut off the main power supply for this type of system. Furthermore, machine-room-less elevators equipped with an electric brake release device should also isolate the motor of the electric brake release device using two power-off isolation devices: a 3P switch disconnecting the main power supply (hereinafter referred to as the motor isolation switch) and a 2P switch disconnecting the brake power supply (hereinafter referred to as the brake isolation switch). This type of power-off isolation device is universally applicable.

[0003] After employing two power-off isolation devices—a motor disconnect switch and a brake disconnect switch—the following operating states may occur:

[0004] State 1: Motor isolating switch closed, brake isolating switch closed: Theoretically, the elevator is in normal maintenance working state;

[0005] State 2: Motor isolating switch closed, brake isolating switch open: Theoretically, the traction motor is energized and the brake is de-energized. At this time, the brake status monitoring function should be able to detect the failure and prevent the elevator from running for a long time. Moreover, since the brake is de-energized, the brake can still provide braking force. Even if the drive host has a short-term brake-driven operation, the risk is low.

[0006] State 3: Motor isolating switch open, brake isolating switch open: Theoretically, the drive unit is in a de-energized state;

[0007] State 4: Motor isolating switch open, brake isolating switch closed: Theoretically, the elevator traction motor loses power and the brake is energized. If the car is moved using maintenance equipment at this time, the brake may be opened. Since the traction motor has no power, the car may overshoot the top, posing an obvious safety risk to maintenance personnel on the car top.

[0008] If the status of the switch cannot be guaranteed by relying on the operating procedures, it is necessary to avoid the risky state four. If the maintenance personnel are unfamiliar with the isolation device or are unintentionally careless when performing maintenance work on the drive host, and only disconnect one switch, then either the traction motor or the brake device is energized, and there is a risk of working with live wires. Once the motor isolating switch of the isolation motor is open and the brake isolating switch of the isolation brake is closed, if the elevator is run at this time, it is very likely that it will run away as soon as it starts. Utility Model Content

[0009] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide an operating mechanism for an isolation device based on mechanical baffle limiting, comprising a motor disconnect switch, a brake disconnect switch, and a mechanical baffle that moves with the handle of the motor disconnect switch. The mechanical baffle consists of a main panel, a fixing sleeve, and a side baffle. The fixing sleeve is located at the bottom of the main panel and is fixedly fitted onto the handle of the motor disconnect switch. The side baffle is located at one end of the main panel and extends along the axis of the fixing sleeve to the handle of the brake disconnect switch. The side baffle is located on the closed side of the brake disconnect switch.

[0010] In order to fix the position of the mechanical baffle, the following features are specifically provided: the fixing sleeve has the same cross section as the handle of the motor disconnect switch, and the fixing sleeve has openings that abut against both sides of the handle.

[0011] To ensure that the side baffle can only limit the brake disconnect switch handle in one direction, the following features are specifically provided: the side baffle is arc-shaped, and the opening width of the side baffle is greater than the diameter of the brake disconnect switch handle.

[0012] To ensure that the side baffle is in position to fit the brake disconnect switch handle after the mechanical baffle is fully installed, the following features are specifically provided: a positioning baffle extending perpendicularly to the main panel is provided at the end of the main panel located away from the brake disconnect switch from the fixing sleeve. When the positioning baffle fits the handle of the motor disconnect switch, the side baffle is located on one side of the handle of the brake disconnect switch.

[0013] To facilitate the synchronous operation of the motor disconnect switch and the brake disconnect switch via a mechanical baffle, the following features are specifically provided: a lever is provided on the upper side of the main panel, and the lever extends perpendicularly to the surface of the main panel.

[0014] Preferably, an insulating protective sleeve is installed at the top of the lever.

[0015] The advantages of this utility model compared to the prior art are:

[0016] Firstly, this utility model employs two power-off devices: a motor isolating switch and a brake isolating switch. The motor isolating switch and the brake isolating switch can be disconnected simultaneously via a mechanical baffle, reducing the number of operations. Furthermore, when maintenance personnel finish their work and leave the work site at low speed, it avoids the dangerous situation where the motor isolating switch is open while the brake isolating switch is closed, thus preventing the vehicle from slipping during startup.

[0017] Secondly, the mechanical baffle of this utility model consists of a main panel, a fixing sleeve, and a side baffle. The fixing sleeve is installed on the handle of the motor disconnect switch so that the mechanical baffle changes position according to the state of the motor disconnect switch, which is convenient for installation. The opening of the side baffle faces the disconnect side of the brake disconnect switch. The width of the opening is sufficient to ensure that the handle of the brake disconnect switch can be moved to the disconnect state, thereby ensuring that the brake disconnect switch can be opened and closed independently relative to the motor disconnect switch when the motor disconnect switch is in the closed state. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the operating mechanism of the isolation device based on mechanical baffle limiting in its first working state.

[0020] Figure 2 This is a front view of the operating mechanism of the isolation device based on mechanical baffle limiting in its first working state.

[0021] Figure 3 This is a side view of the operating mechanism of the isolation device based on mechanical baffle limiting in its first working state.

[0022] Figure 4 This is a perspective view of the operating mechanism of the isolation device based on mechanical baffle limiting in the second working state.

[0023] Figure 5 This is a perspective view of the operating mechanism of the isolation device based on mechanical baffle limiting in its third working state.

[0024] Figure 6 This is a perspective view of the mechanical baffle of the isolation device operating mechanism based on mechanical baffle limiting.

[0025] Explanation of reference numerals in the attached diagram: 1. Motor disconnect switch; 2. Brake disconnect switch; 3. Mechanical baffle; 3a. Main panel; 3a1. Positioning baffle; 3a2. Lever; 3a3. Insulating protective sleeve; 3b. Fixing sleeve; 3c. Side baffle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1 to 6 :

[0028] The operating mechanism of the isolation device based on mechanical baffle limit includes a motor isolation switch 1, a brake isolation switch 2, and a mechanical baffle 3 that moves with the handle of the motor isolation switch 1. The mechanical baffle 3 consists of a main panel 3a, a fixed sleeve 3b, and a side baffle 3c. The fixed sleeve 3b is located at the bottom of the main panel 3a and is fixedly sleeved on the handle of the motor isolation switch 1. The side baffle 3c is located at one end of the main panel 3a and extends along the axis of the fixed sleeve 3b to the handle of the brake isolation switch 2. The side baffle 3c is located on the closed side of the brake isolation switch 2.

[0029] In use, the operator aligns one end of the fixing sleeve 3b of the mechanical baffle 3 with one end of the handle of the motor disconnect switch 1, and then slides it horizontally to fit the fixing sleeve 3b onto the handle of the motor disconnect switch 1, thus achieving synchronous movement of the mechanical baffle 3 and the motor disconnect switch 1. At this time, the side baffle 3c at one end of the main panel 3a is in contact with the closed side of the brake disconnect switch 2. Therefore, when both the motor disconnect switch 1 and the brake disconnect switch 2 are on the closed side, as... Figure 1 and Figure 2 As shown, when the motor disconnect switch 1 is in the closed state, the brake disconnect switch 2 can be independently disconnected, as follows: Figure 4 As shown; when the motor disconnect switch 1 is open, the handle of the motor disconnect switch 1 drives the mechanical baffle 3 to move, and the side baffle 3c of the mechanical baffle 3 drives the handle of the brake disconnect switch 2 to move synchronously, so that the brake disconnect switch 2 also enters the open state. At this time, the states of the motor disconnect switch 1, the brake disconnect switch 2, and the mechanical baffle 3 are as follows. Figure 5As shown, due to the limiting effect of the side baffle 3c, the brake disconnect switch 2 cannot be restored to the closed state when the motor disconnect switch 1 is in the open state. Therefore, it can avoid the risk of the elevator car overshooting the ceiling when the elevator traction motor loses power and the brake is energized, thus ensuring that the elevator drive unit is completely de-energized and providing safety. This embodiment uses two power-off devices, the motor disconnect switch 1 and the brake disconnect switch 2. The mechanical baffle 3 can simultaneously disconnect the motor disconnect switch 1 and the brake disconnect switch 2, reducing the number of operations. Furthermore, when maintenance personnel finish their work and leave the work site at low speed, it avoids the dangerous situation where the motor disconnect switch 1 is open and the brake disconnect switch 2 is closed, preventing the risk of the car slipping during startup.

[0030] In order to fix the position of the mechanical baffle 3, the following features are specifically designed:

[0031] The fixing sleeve 3b has the same cross-section as the handle of the motor disconnect switch 1, and the fixing sleeve 3b has openings that abut against both sides of the handle.

[0032] like Figure 5 and Figure 6 As shown, in this embodiment, when the fixing sleeve 3b of the mechanical baffle 3 is fitted onto the handle of the motor disconnect switch 1, the inner wall of the fixing sleeve 3b is in contact with the outer wall of the handle, and the opening of the fixing sleeve 3b abuts against both sides of the handle to fix the mechanical baffle 3, preventing the mechanical baffle 3 from loosening and affecting its limiting effect.

[0033] To ensure that the side baffle 3c can only limit the handle of the brake isolating switch 2 in one direction, the following features are specifically designed:

[0034] The side baffle 3c is arc-shaped, and the opening width of the side baffle 3c is greater than the diameter of the brake disconnect switch 2 handle.

[0035] like Figure 5 and Figure 6 As shown, in this embodiment, the side baffle 3c is arc-shaped and can be tangentially fitted to the handle of the brake disconnect switch 2. The opening of the side baffle 3c facing the disconnect side of the brake disconnect switch 2 is wide enough to ensure that the handle of the brake disconnect switch 2 can be moved to the disconnect state, thereby ensuring that the brake disconnect switch 2 can be disconnected and closed independently relative to the motor disconnect switch 1 when the motor disconnect switch 1 is in the closed state.

[0036] To ensure that the rear baffle 3c is in contact with the handle of the brake isolating switch 2 after the mechanical baffle 3 is fully installed, the following features are specifically designed:

[0037] The main panel 3a is located at the end of the fixed sleeve 3b away from the brake disconnect switch 2, and a positioning baffle 3a1 extending perpendicularly to the main panel 3a is provided. When the positioning baffle 3a1 is in contact with the handle of the motor disconnect switch 1, the side baffle 3c is located on the side of the handle of the brake disconnect switch 2.

[0038] like Figure 5 As shown, in this embodiment, when installing the mechanical baffle 3, the fixing sleeve 3b is placed on the handle of the motor disconnect switch 1, and then the mechanical baffle 3 is moved to the position baffle 3a1 to fit against the handle of the motor disconnect switch 1. At this time, the position of the mechanical baffle 3 is positioned to ensure that the side baffle 3c is located at the handle of the brake disconnect switch 2, and the position of the mechanical baffle 3 is kept stable during use by fixing sleeves 3b and 3b1.

[0039] To facilitate the synchronous operation of the motor disconnect switch 1 and the brake disconnect switch 2 via the mechanical baffle 3, the following features are specifically provided:

[0040] A lever 3a2 is provided on the upper side of the main panel 3a, and the lever 3a2 extends perpendicularly to the surface of the main panel 3a.

[0041] An insulating protective sleeve 3a3 is installed at the top of the lever 3a2.

[0042] like Figure 3 As shown, in this embodiment, a lever 3a2 is provided on the main panel 3a of the mechanical baffle 3. The operator can open and close the switch 1 of the motor disconnection switch 1 connected to the lever 3a2. The insulating protective sleeve 3a3 on the lever 3a2 reduces the risk of electric shock to the operator.

[0043] Working principle: When both the motor isolating switch 1 and the brake isolating switch 2 are closed, the brake isolating switch 2 can be independently opened when the motor isolating switch 1 is closed. When the motor isolating switch 1 is opened, the side baffle 3c of the mechanical baffle 3 drives the handle of the brake isolating switch 2 to move synchronously, so that the brake isolating switch 2 also enters the open state. Due to the limitation of the side baffle 3c, the brake isolating switch 2 cannot return to the closed state when the motor isolating switch 1 is open.

[0044] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An operating mechanism for an isolation device based on mechanical baffle limiting, characterized in that, The device includes a motor disconnect switch (1), a brake disconnect switch (2), and a mechanical baffle (3) that moves with the handle of the motor disconnect switch (1). The mechanical baffle (3) consists of a main panel (3a), a fixed sleeve (3b), and a side baffle (3c). The fixed sleeve (3b) is located at the bottom of the main panel (3a) and is fixedly fitted onto the handle of the motor disconnect switch (1). The side baffle (3c) is located at one end of the main panel (3a) and extends along the axis of the fixed sleeve (3b) to the handle of the brake disconnect switch (2). The side baffle (3c) is located on the closed side of the brake disconnect switch (2).

2. The operating mechanism of the isolation device based on mechanical baffle limiting according to claim 1, characterized in that, The fixing sleeve (3b) has the same cross section as the handle of the motor disconnect switch (1), and the fixing sleeve (3b) has openings that abut against both sides of the handle.

3. The operating mechanism of the isolation device based on mechanical baffle limiting according to claim 1, characterized in that, The side baffle (3c) is arc-shaped, and the opening width of the side baffle (3c) is greater than the diameter of the brake disconnect switch (2) handle.

4. The operating mechanism of the isolation device based on mechanical baffle limiting according to claim 1, characterized in that, The main panel (3a) is provided with a positioning baffle (3a1) extending perpendicularly to the main panel (3a) at one end of the fixed sleeve (3b) away from the brake disconnect switch (2). When the positioning baffle (3a1) is in contact with the handle of the motor disconnect switch (1), the side baffle (3c) is located on the side of the handle of the brake disconnect switch (2).

5. The operating mechanism of the isolation device based on mechanical baffle limiting according to claim 1, characterized in that, A lever (3a2) is provided on the upper side of the main panel (3a), and the lever (3a2) extends perpendicularly to the surface of the main panel (3a).

6. The operating mechanism of the isolation device based on mechanical baffle limiting according to claim 5, characterized in that, An insulating protective sleeve (3a3) is installed at the top of the lever (3a2).

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