Home elevator stopping device
By designing a mechanical blocking device installed on the columns of the carriage and a limit buffer device on the shaft wall in a home elevator, the space occupied by the elevator blocking device in the prior art is solved by using the swing rod to contact the limit buffer device. and the problem of inconvenience in operation, safe and convenient elevator maintenance operations are achieved.
Patent Information
- Application Number
- CN202323544005.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2033-12-25
AI Technical Summary
The existing household elevator blocking device occupies the top floor or bottom pit space during installation and operation, and is inconvenient to operate, which poses safety hazards.
设计一种家用电梯阻止装置,机械阻止装置安装在轿架立柱上,限位缓冲装置安装在井道壁上,通过减速电机驱动摆杆转动,摆杆与限位缓冲装置接触,防止电梯冲顶或蹲 The bottom ensures the safety of the top floor and bottom pit space.
The elevator blocking device that does not occupy the top floor or bottom pit space is realized, which simplifies operation, improves safety, and avoids safety hazards for maintenance personnel during installation and operation.
Smart Images
Figure CN222433828U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of elevators and relates to a household elevator blocking device. Background Art
[0002] With the development of social economy, home elevators are widely used. However, home elevators usually have problems such as small shaft walls, low top floor height, and shallow pit depth. During the repair and maintenance of the elevator, maintenance personnel often enter the car top or pit for inspection. In order to ensure the personal safety of maintenance personnel, it is necessary to install an elevator blocking device so that the elevator can only move within a restricted range during maintenance, providing maintenance personnel with sufficient safety space. The "Safety Specifications for the Manufacturing and Installation of Home Elevators" clearly proposes a mechanical blocking device: when the device is in the working position, it ensures the minimum safety space of the pit and the car top for maintenance and inspection.
[0003] In the existing mechanical blocking devices for home elevators, most elevator manufacturers use support rods installed in the pit and on the top of the car, and rubber is installed on the top of the support rod as a buffer component. When it is in action, maintenance or inspection personnel are required to move the support rod and trigger the relevant safety switch to meet the requirements of electrical safety and mechanical operation safety to ensure a safe maintenance space. This practice will inevitably require maintenance personnel or inspection personnel to enter the shaft wall in advance, and there is a possibility of injury to the maintenance or inspection personnel in this process. If the support rod is moved outside the shaft wall by other auxiliary equipment, the operation will be inconvenient and also have corresponding dangers.
[0004] In addition, since the top floor and pit space of a home elevator are relatively small, if the blocking device is installed in these places or at the bottom or top of the car, there will inevitably be conflicts, and it is necessary to consider how to avoid installing the blocking device in these places. Therefore, a home elevator blocking device is designed that is easy to operate and does not occupy the top floor or pit space. Utility Model Content
[0005] The purpose of the utility model is to solve the above problems in the prior art and to propose a household elevator blocking device. The technical problem to be solved by the device is: how to design a household elevator blocking device that does not occupy the top floor or pit space and is simple to operate.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] A household elevator blocking device comprises a mechanical blocking device, a control cabinet and a limit buffer device, wherein the mechanical blocking device is mounted on a car frame column, the limit buffer device is mounted on a shaft wall, the mechanical blocking device is electrically connected to an external control cabinet, the mechanical blocking device comprises a mounting bracket, a reduction motor, a rocker arm, a reset switch and a working switch, the mounting bracket is fixed to one side of the car frame column, the reduction motor is fixed to the mounting bracket through a motor bracket, a rotating shaft is connected to the output shaft of the reduction motor, the rocker arm is mounted on the rotating shaft and fixedly connected thereto, a reset switch cam and a working switch cam are fixedly mounted on the rotating shaft, the reset switch cam is arranged correspondingly to the reset switch, and the working switch cam is arranged correspondingly to the working switch.
[0008] The car of the home elevator is installed on the car frame, and the mechanical stopping device is installed on one of the car frame columns of the car frame. Different from the existing installation method of installing it at the bottom or top of the car, it does not occupy the top floor or pit space. When the elevator enters the maintenance mode, the reduction motor drives the rocker arm to rotate, and the rocker arm swings 90° to the outside of the car. After the elevator reaches the upper and lower limit positions, the extended rocker arm contacts the limit buffer devices of the upper and lower shafts to prevent the car from further running to the top or bottom, ensuring that there is enough space on the top floor and the pit of the shaft to protect the staff.
[0009] The limit buffer device includes a limit bracket and a buffer rubber, the buffer rubber is installed on the limit bracket, there are two limit buffer devices, namely an upper limit buffer device and an upper limit buffer device, both of which are fixed on the shaft wall through the limit bracket.
[0010] With the above structure, the upper limit buffer device and the lower limit buffer device are respectively located at the top and bottom of the shaft. When the elevator is in maintenance state, the rocker arm extends. When the elevator reaches the upper and lower limit positions, the limit buffer device can resist the rocker arm from continuing to move upward or downward, that is, preventing the elevator from accidentally running upward or downward during maintenance and causing hitting the top or squatting at the bottom, ensuring that there is enough space on the top floor and the bottom pit of the shaft to protect the staff.
[0011] The rotating shaft is a flat shaft, and the swing rod is vertically sleeved on the rotating shaft and fixedly connected with the rotating shaft through a transmission pin.
[0012] With the above structure, the rotating shaft is set as a flat shaft, which can prevent the swing arm, the reset switch cam and the working switch cam from rotating relative to the rotating shaft, thereby increasing the stability of the connection.
[0013] The swing rod has a rotation angle of 90°, the reset switch cam and the working switch cam are arranged at 90°, the reset switch and the working switch are arranged in parallel, a shaft sleeve is arranged between the reset switch cam and the working switch cam, and the shaft sleeve is sleeved on the rotating shaft.
[0014] With the above structure, when the elevator is in maintenance state, the swing arm rotates 90° to the outside of the car. When the maintenance is completed, the swing arm rotates 90° to reset. The reset switch cam and the working switch cam are set at 90°. When the swing arm rotates, it can cooperate with the reset switch and the working switch at the corresponding position to realize signal transmission.
[0015] The car frame column is U-shaped, the mounting bracket is L-shaped, the mounting bracket is connected to the car frame column by bolts, and a car guide rail is arranged on the side of the car.
[0016] With the above structure, the mechanical blocking device is installed on the car frame column through the mounting bracket, does not occupy the top floor or pit space, and the L-shaped mounting bracket is easy to install.
[0017] The control cabinet is equipped with a maintenance switch, which includes "normal" mode and "maintenance" mode, and is equipped with a display light. The "normal" mode indicates that the elevator is in normal operation mode, in which the mechanical blocking device is in a reset state; the "maintenance" mode indicates that the elevator is in maintenance mode, in which the mechanical blocking device is in a working state; the reduction motor, reset switch, and working switch are all electrically connected to the control cabinet. The operation of the mechanical blocking device can be controlled through the external control cabinet, and the switching between the "normal" mode and the "maintenance" mode can be achieved through the maintenance switch. The operation is simple and convenient, and the safety is good.
[0018] Compared with the prior art, the household elevator blocking device has the following advantages:
[0019] 1. The household elevator blocking device includes a mechanical blocking device, a control cabinet and a limit buffer device. The mechanical blocking device is installed on the car frame column, the limit buffer device is installed on the shaft wall, and the mechanical blocking device is electrically connected to the external control cabinet. The operation of the mechanical blocking device is controlled by the control cabinet, and the operation is simple and convenient. The mechanical blocking device is installed on the car frame column, which is different from the existing installation method of installing it at the bottom or top of the car, and does not occupy the top floor or pit space; when the elevator enters the maintenance mode, the reduction motor drives the swing rod to rotate, and the swing rod swings 90° to the outside of the car. After the elevator reaches the upper and lower limit positions, the extended swing rod contacts the limit buffer device of the upper and lower shafts to prevent the car from further running to the top or squatting to the bottom, ensuring that there is enough space on the top floor and the bottom pit of the shaft to protect the staff; in normal mode, the swing rod is in a retracted state and will not contact the limit buffer device, which will not affect the normal operation of the elevator. This blocking device does not occupy the top floor or the pit space, saves installation space, and has a simple structure, high safety, and is easy to use.
[0020] 2. A reset switch cam and a working switch cam are arranged on the rotating shaft. The reset switch cam is arranged correspondingly to the reset switch, and the working switch cam is arranged correspondingly to the working switch. When the rocker arm rotates with the rotating shaft, the reset switch cam and the working switch cam can cooperate with the reset switch and the working switch at the corresponding position to realize signal transmission, thereby displaying the state of the mechanical blocking device and improving the convenience and reliability of operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural schematic diagram of the utility model;
[0022] Figure 2 It is a schematic diagram of the installation structure of the utility model;
[0023] Figure 3 It is a schematic diagram of the structure of the utility model when reaching the upper limit buffer device;
[0024] Figure 4 It is a structural schematic diagram of the utility model when reaching the lower limit buffer device;
[0025] Figure 5 It is a schematic diagram of the state of the reset switch and the working switch of the utility model in the normal state of the elevator;
[0026] Figure 6 It is a schematic diagram of the state of the reset switch and the working switch of the utility model in the elevator maintenance state;
[0027] In the figure: 1. mounting bracket; 2. reduction motor; 3. motor bracket; 4. rocker arm; 5. rotating shaft; 6. transmission pin; 7. reset switch cam; 8. reset switch; 9. working switch cam; 10. working switch; 11. bushing; 12. car frame column; 13. car guide rail; 14. car; 15. limit bracket; 16. buffer rubber; 17. shaft wall. DETAILED DESCRIPTION
[0028] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.
[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0030] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.
[0031] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or it can be connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.
[0032] See also Figure 1-6 The present embodiment provides a household elevator blocking device, including a mechanical blocking device, a control cabinet and a limit buffer device. The mechanical blocking device is installed on the car frame column 12, the limit buffer device is installed on the shaft wall 17, the mechanical blocking device is electrically connected to the external control cabinet, the mechanical blocking device includes a mounting bracket 1, a reduction motor 2, a rocker arm 4, a reset switch 8, and a working switch 10. The mounting bracket 1 is fixed to one side of the car frame column 12, the reduction motor 2 is fixed to the mounting bracket 1 through the motor bracket 3, the output shaft of the reduction motor 2 is connected to a rotating shaft 5, the rocker arm 4 is installed on the rotating shaft 5 and fixedly connected thereto, the rotating shaft 5 is fixedly installed with a reset switch cam 7 and a working switch cam 9, the reset switch cam 7 is correspondingly arranged with the reset switch 8, and the working switch cam 9 is correspondingly arranged with the working switch 10. The car 14 of the home elevator is installed on the car frame, and the mechanical blocking device is installed on one of the car frame columns 12 of the car frame. Different from the existing installation method of installing it at the bottom or top of the car, it does not occupy the top floor or pit space. When the elevator enters the maintenance mode, the reduction motor 2 drives the rocker arm 4 to rotate, and the rocker arm 4 swings 90° to the outside of the car 14. After the elevator reaches the upper and lower limit positions, the extended rocker arm 4 contacts the limit buffer devices of the upper and lower shafts to prevent the car from further running to the top or squatting to the bottom, ensuring that there is enough space on the top floor and the pit of the shaft to protect the staff.
[0033] The limit buffer device includes a limit bracket 15 and a buffer rubber 16, and the buffer rubber 16 is installed on the limit bracket 15. There are two limit buffer devices, namely an upper limit buffer device and an upper limit buffer device, which are fixed on the shaft wall 17 through the limit bracket 15; the upper limit buffer device and the upper limit buffer device are respectively located at the top and bottom of the shaft. When the elevator is in the maintenance state, the swing rod 4 is extended. When the elevator reaches the upper and lower limit positions, the limit buffer device can resist the swing rod 4 from continuing to move upward or downward, that is, to prevent the elevator from accidentally running upward or downward during maintenance, causing the top or bottom to be hit, and to ensure that there is enough space on the top floor and the bottom pit of the shaft to protect the staff.
[0034] The rotating shaft 5 is a flat shaft, and the rocker arm 4 is vertically sleeved on the rotating shaft 5 and fixedly connected with it through a transmission pin 6; the rotating shaft 5 is set as a flat shaft to prevent the rocker arm 4, the reset switch cam 7 and the working switch cam 9 from rotating relative to the rotating shaft 5, thereby increasing the stability of the connection.
[0035] The rotation angle of the swing arm 4 is 90°, the reset switch cam 7 and the working switch cam 9 are set at 90°, the reset switch 8 and the working switch 10 are set in parallel, and a sleeve 11 is provided between the reset switch cam 7 and the working switch cam 9, and the sleeve 11 is sleeved on the rotating shaft 5; when the elevator is in the maintenance state, the swing arm 4 rotates 90° toward the outside of the car 14, and when the maintenance is completed, the swing arm 4 rotates 90° to reset, and the reset switch cam 7 and the working switch cam 9 are set at 90°. When the swing arm 4 rotates, it can cooperate with the reset switch 8 and the working switch 10 at the corresponding position to realize signal transmission.
[0036] The car frame column 12 is U-shaped, the mounting bracket 1 is L-shaped, the mounting bracket 1 is connected to the car frame column 12 by bolts, and a car guide rail 13 is arranged on the side of the car 14; the mechanical blocking device is installed on the car frame column 12 through the mounting bracket 1, does not occupy the top floor or pit space, and the L-shaped mounting bracket 1 is easy to install.
[0037] The control cabinet is equipped with a maintenance switch, which includes "normal" mode and "maintenance" mode, and is equipped with a display light. The "normal" mode indicates that the elevator is in normal operation mode, in which the mechanical blocking device is in a reset state; the "maintenance" mode indicates that the elevator is in maintenance mode, in which the mechanical blocking device is in a working state; the reduction motor 2, the reset switch 8, and the working switch 10 are all electrically connected to the control cabinet. The operation of the mechanical blocking device can be controlled through the external control cabinet, and the switching between the "normal" mode and the "maintenance" mode can be realized through the maintenance switch. The operation is simple and convenient, and the safety is good.
[0038] The working principle of this utility model:
[0039] The utility model provides a household elevator blocking device. Before operating the blocking device, the maintenance personnel must confirm that the mechanical blocking device on the car frame column 12 is between the upper limit buffer device and the lower limit buffer device in the hoistway. If not, the elevator needs to be operated between them before maintenance.
[0040] After the maintenance personnel confirm that the blocking device is in the correct position, they will turn the maintenance switch in the control cabinet from "normal" to "maintenance". At this time, the elevator enters the maintenance mode and the blocking device enters the working state. The reduction motor 2 is powered on and rotates, thereby driving the swing arm 4 to swing 90 degrees to the outside of the car 14 through the shaft 5. The swing arm 4 turns to the maintenance state position. While the shaft 5 rotates, the working switch cam 9 presses on the working switch 10, and the working switch 10 is turned on. At this time, the reset switch cam 7 is disconnected from the reset switch 8. The working switch feeds back a signal to the system, and the system uses this signal to confirm that the mechanical blocking device is working properly, thereby disconnecting the current of the reduction motor 2 to prevent the motor from stalling and protecting the motor. The operator knows that the elevator has entered the maintenance mode through the system and indicator light, and can then perform maintenance on the elevator. The elevator maintenance personnel can then enter the car top to inspect and operate the elevator. When the elevator is operating in maintenance mode, if the car moves unexpectedly and suddenly falls or rushes upward, the extended rocker arm 4 can contact the limit buffer devices of the upper and lower shafts and stop them, thereby preventing the car from moving further and avoiding accidents such as hitting the top or squatting at the bottom, ensuring that there is enough space on the top floor and the bottom pit to protect maintenance personnel.
[0041] When the maintenance personnel complete the inspection of the elevator, they leave the car top or pit, and turn the inspection switch in the control cabinet from "inspection" to "normal". At this time, the elevator returns to normal mode, and the mechanical blocking device enters the reset state. The reduction motor 2 is powered on and rotates, thereby driving the swing arm 4 to swing 90 degrees to the inside of the car 14 through the shaft 5, and the swing arm 4 turns to the reset state. While the shaft 5 rotates, the reset switch cam 7 presses on the reset switch 8, and the reset switch 8 is turned on. At this time, the working switch cam 9 is disconnected from the working switch 10. The reset switch 8 feeds back a signal to the system, and the system uses this signal to confirm that the mechanical blocking device is reset in place, thereby disconnecting the current of the reduction motor 2 to prevent the motor from stalling to protect the motor, and the elevator enters the normal mode for passengers to use.
[0042] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.
Claims
1. A household elevator blocking device, comprising a mechanical blocking device, a control cabinet and a limit buffer device, characterized in that: The mechanical blocking device is mounted on a car frame column (12), the limit buffer device is mounted on a shaft wall (17), the mechanical blocking device is electrically connected to an external control cabinet, and the mechanical blocking device comprises a mounting bracket (1), a reduction motor (2), a swing arm (4), a reset switch (8), and a working switch (10). The mounting bracket (1) is fixed to one side of the car frame column (12), the reduction motor (2) is fixed to the mounting bracket (1) through a motor bracket (3), a rotating shaft (5) is connected to the output shaft of the reduction motor (2), the swing arm (4) is mounted on the rotating shaft (5) and is fixedly connected thereto, a reset switch cam (7) and a working switch cam (9) are fixedly mounted on the rotating shaft (5), the reset switch cam (7) and the reset switch (8) are arranged correspondingly, and the working switch cam (9) and the working switch (10) are arranged correspondingly.
2. A household elevator blocking device according to claim 1, characterized in that: The position-limiting buffer device comprises a position-limiting bracket (15) and a buffer rubber (16), wherein the buffer rubber (16) is mounted on the position-limiting bracket (15), and there are two position-limiting buffer devices, namely an upper position-limiting buffer device and an upper position-limiting buffer device, wherein both the upper position-limiting buffer device and the upper position-limiting buffer device are fixedly arranged on the shaft wall (17) via the position-limiting bracket (15).
3. A household elevator blocking device according to claim 1, characterized in that: The rotating shaft (5) is a flat shaft, and the swing rod (4) is vertically sleeved on the rotating shaft (5) and fixedly connected thereto via a transmission pin (6).
4. A household elevator blocking device according to claim 3, characterized in that: The swing rod (4) has a rotation angle of 90°, the reset switch cam (7) and the working switch cam (9) are arranged at 90°, the reset switch (8) and the working switch (10) are arranged in parallel, a shaft sleeve (11) is arranged between the reset switch cam (7) and the working switch cam (9), and the shaft sleeve (11) is sleeved on the rotating shaft (5).
5. A household elevator blocking device according to claim 1, characterized in that: The car frame column (12) is U-shaped, the mounting bracket (1) is L-shaped, and the mounting bracket (1) is connected to the car frame column (12) via bolts.
6. A household elevator blocking device according to claim 1, characterized in that: The control cabinet is provided with a maintenance switch, which includes a "normal" mode and a "maintenance" mode and is equipped with a display light. The reduction motor (2), the reset switch (8) and the working switch (10) are all electrically connected to the control cabinet.