Lift car elevator alarm device

Abstract

The utility model discloses a car elevator alarm device, which belongs to the technical field of elevators and comprises a vertical shaft, sliding grooves are arranged at the left end and the right end of the inner wall of the vertical shaft, an elevator car is slidably connected in the vertical shaft, the elevator car is slidably connected in the sliding grooves, and a pressure sensor is mounted on the bottom wall of the elevator car. A top plate is fixedly connected to the top of the vertical shaft, a bidirectional electric push rod is installed at the front end of the top wall of the top plate, an electronic element is installed at the output end of the bidirectional electric push rod, and line interfaces are formed in the left end and the right end of the outer side of the bidirectional electric push rod. When a person enters the elevator, the bidirectional electric push rod is started through the controller, and the circuit is closed through the electronic element, so that whether the elevator stays still for a long time or not is monitored, and the automatic alarm effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, and more specifically to an alarm device for a car elevator. Background Art

[0002] An elevator is a mechanical device used to transport people or goods vertically, usually consisting of one or more cabins and one or more vertically running electric cables or hydraulic cylinders.

[0003] In the prior art, elevators are equipped with alarm devices. When an elevator breaks down and cannot operate, people in the car press a button to activate the alarm function. However, when an elevator breaks down, there may be no people walking around in the surrounding environment, which may cause the elevator to be trapped and unable to be discovered, which may cause people to be trapped for a long time, posing a safety hazard.

[0004] Therefore, a car elevator alarm device is proposed to address the above problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a car elevator alarm device, which can realize the effect of automatic alarm by starting the two-way electric push rod through the controller when someone enters the elevator, and closing the circuit through the electronic components at the output end, so as to monitor whether the elevator has been stationary for a long time.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A car elevator alarm device comprises a vertical shaft, wherein the left and right ends of the inner wall of the vertical shaft are provided with sliding grooves, the interior of the vertical shaft is slidably connected with an elevator cabin, the elevator cabin is slidably connected inside the sliding grooves, a pressure sensor is installed on the bottom wall of the elevator cabin, a top plate is fixedly connected to the top of the vertical shaft, a bidirectional electric push rod is installed on the front end of the top wall of the top plate, an electronic component is installed on the output end of the bidirectional electric push rod, line interfaces are provided on the outer left and right ends of the bidirectional electric push rod, and an alarm is installed on the left end of the top wall of the elevator cabin.

[0010] Furthermore, a laser rangefinder is installed in the middle of the top wall of the elevator cabin.

[0011] Furthermore, a display screen is provided at the upper middle portion of the left end of the inner wall of the elevator cabin.

[0012] Furthermore, handrails are fixedly connected to the middle of the left and right ends of the inner wall of the elevator cabin.

[0013] Furthermore, buffers are provided at the four corners of the bottom of the top plate, the upper and lower ends of the outer walls of the buffers are fixedly connected with connecting blocks, and the top wall of the connecting block at the top is fixedly connected to the bottom wall of the top plate.

[0014] Furthermore, a control box is provided at the rear end of the top wall of the top plate, and the control box is electrically connected to the pressure sensor, the bidirectional electric push rod, the line interface, the alarm, the laser rangefinder and the display screen respectively.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) This solution is realized by starting the bidirectional electric push rod through the controller when someone enters the elevator, and closing the circuit through the electronic components, so as to monitor whether the elevator has been stationary for a long time, thereby achieving the effect of automatic alarm.

[0018] (2) This solution uses a laser rangefinder to measure the distance between the car and the top of the shaft, and then compares it with the set value through the controller. If the deviation value is large, an alarm is triggered to prevent the elevator from misaligning floors and causing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 This is a front view structural schematic diagram of the utility model;

[0021] Figure 3 It is a partial three-dimensional structural schematic diagram of the utility model;

[0022] Figure 4 It is a schematic diagram of the partial split structure of the utility model.

[0023] Description of the numbers in the figure:

[0024] 1. Shaft; 2. Elevator cabin; 3. Top plate; 4. Sliding groove; 5. Pressure sensor; 6. Bidirectional electric push rod; 7. Line interface; 8. Control box; 9. Alarm; 10. Laser rangefinder; 11. Buffer; 12. Connection block; 13. Display screen; 14. Handrail; 15. Electronic components. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Example:

[0029] See also Figure 1 , Figure 2 and Figure 3 A car elevator alarm device comprises a shaft 1, wherein sliding grooves 4 are provided at the left and right ends of the inner wall of the shaft 1, an elevator cabin 2 is slidably connected to the interior of the shaft 1, and the elevator cabin 2 is slidably connected to the interior of the sliding grooves 4, a pressure sensor 5 is installed on the bottom wall of the elevator cabin 2, a top plate 3 is fixedly connected to the top of the shaft 1, a bidirectional electric push rod 6 is installed at the front end of the top wall of the top plate 3, an electronic component 15 is installed at the output end of the bidirectional electric push rod 6, line interfaces 7 are provided at the left and right ends of the outer sides of the bidirectional electric push rod 6, and an alarm 9 is installed at the left end of the top wall of the elevator cabin 2; a control box 8 is provided at the rear end of the top wall of the top plate 3, and the control box 8 is electrically connected to the pressure sensor 5, the bidirectional electric push rod 6, the line interface 7, the alarm 9, the laser rangefinder 10 and the display screen 13 respectively.

[0030] This solution can monitor the pressure of the elevator cabin 2 through the pressure sensor 5. When someone enters the elevator, the two-way electric push rod 6 is started through the control box 8, and the electronic component 15 at the output end of the two-way electric push rod 6 is connected to the line interface 7, so as to realize the closure of the circuit. Then, the control box 8 is used to monitor whether the elevator has been stationary for a long time. When such a situation occurs, an automatic alarm is triggered, and the situation is fed back to the control center to ensure the safety of the trapped people. When the elevator is in an empty cabin state, the line is disconnected to ensure the accuracy of the alarm.

[0031] See also Figure 2 and Figure 4 A laser rangefinder 10 is installed in the middle of the top wall of the elevator cabin 2; a display screen 13 is set in the middle and upper part of the left end of the inner wall of the elevator cabin 2.

[0032] This solution installs a laser rangefinder 10 on the top of the elevator cabin 2, and measures the distance between the elevator cabin 2 and the top of the shaft 1 through the rangefinder, which is then compared with the initial value. When the deviation value is large, an alarm is automatically sounded through the alarm 9 to prevent people from walking out of the elevator cabin 2 and falling into the shaft 1. At the same time, a display screen 13 is installed inside the elevator cabin 2. When the elevator breaks down, some countermeasures and precautions can be informed to the people in the cabin through the display screen 13 to enhance their safety awareness.

[0033] See also Figure 3 and Figure 4 The inner walls of the elevator cabin 2 are fixedly connected with handrails 14 in the middle of the left and right ends; buffers 11 are provided at the four corners of the bottom of the top plate 3, and the upper and lower ends of the outer walls of the buffers 11 are fixedly connected with connecting blocks 12, and the top wall of the top connecting block 12 is fixedly connected to the bottom wall of the top plate 3.

[0034] This solution can provide support points for personnel and improve their comfort by fixing handrails 14 at the left and right ends of the inner wall of the elevator cabin 2; buffers 11 are set at the four corners at the bottom of the top plate 3. When the elevator has a top-hitting failure, the buffers 11 can cushion the elevator and reduce the impact of the impact force on the personnel in the cabin.

[0035] Working principle: When the elevator is working inside the shaft 1, the pressure sensor 5 at the bottom of the elevator cabin 2 can detect whether there is a person entering the elevator. When the person enters the elevator, the pressure sensor 5 transmits the command to the control box 8, thereby starting the two-way electric push rod 6 to connect with the line interface 7. The output end of the two-way electric push rod 6 is installed with an electronic component 15, so that the line can be closed. The control box 8 monitors whether the elevator has been stationary for a long time, and it can be compared with the set value. When the set value is exceeded, the alarm 9 will automatically alarm and feedback the situation to the control center to ensure that it can be notified in the first time to ensure the personal safety of the people in the elevator cabin 2. At the same time, the position of the elevator when it stops can be calculated by the laser rangefinder 10, and then compared with the set value to prevent safety hazards caused by the misalignment of the elevator platform. When the elevator stops or is misaligned due to a malfunction, a display screen 13 is set at the left end of the inner wall of the elevator cabin 2. When an alarm occurs, some precautions and fault conditions can be notified to the people in the cabin through the display screen 13, thereby preventing safety hazards caused by incorrect operation of the personnel.

[0036] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A car elevator alarm device, comprising a shaft (1), characterized in that: The inner wall of the vertical shaft (1) is provided with sliding grooves (4) at the left and right ends, the interior of the vertical shaft (1) is slidably connected to an elevator cabin (2), the elevator cabin (2) is slidably connected to the interior of the sliding groove (4), a pressure sensor (5) is installed on the bottom wall of the elevator cabin (2), the top of the vertical shaft (1) is fixedly connected to a top plate (3), a bidirectional electric push rod (6) is installed at the front end of the top wall of the top plate (3), an electronic component (15) is installed at the output end of the bidirectional electric push rod (6), the outer left and right ends of the bidirectional electric push rod (6) are provided with line interfaces (7), and an alarm (9) is installed at the left end of the top wall of the elevator cabin (2).

2. A car elevator alarm device according to claim 1, characterized in that: A laser rangefinder (10) is installed in the middle of the top wall of the elevator cabin (2).

3. The car elevator alarm device according to claim 1, characterized in that: A display screen (13) is provided at the upper middle portion of the left end of the inner wall of the elevator cabin (2).

4. The car elevator alarm device according to claim 1, characterized in that: Handrails (14) are fixedly connected to the middle parts of the left and right ends of the inner wall of the elevator cabin (2).

5. The car elevator alarm device according to claim 1, characterized in that: Buffers (11) are provided at the four corners of the bottom of the top plate (3); the upper and lower ends of the outer wall of the buffer (11) are fixedly connected to connecting blocks (12); and the top wall of the connecting block (12) is fixedly connected to the bottom wall of the top plate (3).

6. The car elevator alarm device according to claim 1, characterized in that: A control box (8) is provided at the rear end of the top wall of the top plate (3), and the control box (8) is electrically connected to the pressure sensor (5), the bidirectional electric push rod (6), the line interface (7), the alarm (9), the laser rangefinder (10) and the display screen (13) respectively.

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