Detection equipment for accumulated water in elevator pit

Abstract

The utility model discloses an elevator pit accumulated water detection device which comprises a pit body, an installation frame is arranged on the inner wall of the bottom of the pit body, two installation openings are formed in the outer wall of the top of the installation frame, a water collection box is arranged on the inner walls of the installation openings, and eight water inlets are formed in the outer wall of the circumference of the water collection box. A water collecting barrel is arranged on the inner wall of the bottom of the water collecting box, four water inlet holes are formed in the circumferential outer wall of the water collecting barrel, a floating ball is arranged in the water collecting barrel, a vertical rod is arranged on the outer wall of the floating ball, and a mounting barrel is arranged on the outer wall of the top of the water collecting barrel. The elevator pit accumulated water detection equipment has the advantages that the accuracy of accumulated water detection is improved, the sensitivity of low-water-level detection is improved, and the service life of an elevator is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of special equipment testing technology, and in particular to a testing device for water accumulation in elevator pits. Background Technology

[0002] The elevator pit is an important safety space at the bottom of the elevator shaft, located below the ground level of the lowest floor where the elevator car is normally served. When the elevator car falls due to malfunction or overload, the buffer in the pit can absorb the impact energy, protecting the safety of passengers and equipment. It is equipped with limit switches to trigger emergency braking when the car overtravels, preventing it from falling into the shaft. It also provides access for maintenance personnel to enter the shaft and is equipped with shaft lighting and power sockets to support maintenance work.

[0003] However, traditional elevator pit water detection equipment has certain limitations in water detection, such as low sensitivity, and is prone to false alarms or missed alarms, which affects the accuracy and reliability of water detection.

[0004] For example, a simple liquid level sensor, such as a float switch, may be used to detect water accumulation in the elevator pit. The float switch is triggered when the water reaches a certain height, but it may be affected by water level fluctuations, leading to false alarms. In addition, the float switch requires a relatively high water level to be triggered, making the detection method inaccurate and with low sensitivity. Utility Model Content

[0005] This utility model discloses a detection device for water accumulation in elevator pits, aiming to solve the technical problems that traditional elevator pit water accumulation detection devices have certain limitations in water accumulation detection, such as low sensitivity, easy false alarms or missed alarms, thus affecting the accuracy and reliability of water accumulation detection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A device for detecting water accumulation in elevator pits includes a pit body. The bottom inner wall of the pit body has a mounting frame. The top outer wall of the mounting frame has two mounting openings. The inner wall of each mounting opening has a water collection box. The outer circumference of the water collection box has eight water inlets. The bottom inner wall of the water collection box has a water collection cylinder. The outer circumference of the water collection cylinder has four water inlets. A float is located inside the water collection cylinder. A vertical rod is mounted on the outer wall of the float. The top outer wall of the water collection cylinder has an mounting cylinder. A support plate is slidably connected to the inner circumference of the mounting cylinder. The bottom outer wall of the support plate is fixedly connected to one end of the vertical rod. The top inner wall of the mounting cylinder has two laser rangefinders.

[0008] The above technical solution can improve the accuracy of water accumulation detection, enhance the sensitivity of low water level detection, and extend the service life of the elevator. Specifically, after water enters the pit, the water will flow into the water collection box through eight inlets along the bottom slope of the pit. Then, the water will flow into the lowest part of the water collection box along the inner wall slope, thus the water flow can be gathered and flow into the interior through the water inlet of the water collection cylinder, thereby driving the float ball to move upward. At this time, the upright has an upward thrust due to the water flow, so the support plate slides upward in the inner wall of the mounting cylinder. Before water enters the pit, the distance between the laser rangefinder and the support plate is set to D. After the support plate slides upward in the mounting cylinder due to the water flow, the distance between the laser rangefinder and the support plate is set to d. When the distance (Dd) is less than the set safety value, the laser rangefinder transmits an electrical signal to the alarm, which then sends a signal to the elevator main control board to indicate that there is water accumulation in the pit, so that the staff can deal with the water accumulation in time.

[0009] In a preferred embodiment, the top outer wall of the mounting frame is provided with a protective frame, the top outer wall of the protective frame has two fixing openings, the inner wall of the fixing opening is provided with a fixing ring, the top outer wall of the fixing ring is provided with four equally spaced support columns, and the top outer wall of the support columns is provided with a mounting cover.

[0010] In this design, the structure effectively prevents hard objects such as metal parts and tools falling from the pit from directly impacting the core detection module (water collection box, laser rangefinder). At the same time, it can also disperse the impact stress of accidental loads on the top (such as maintenance personnel stepping on it), thus avoiding local deformation.

[0011] In a preferred embodiment, the cross-section of the water collection box is a stepped structure, and the water collection cylinder is located at the lowest point of the bottom inner wall of the water collection box.

[0012] In this design, all water entering the collection box will eventually converge at the lowest point and then enter the collection cylinder. This ensures that even small amounts of water can be collected in the collection cylinder, effectively collecting accumulated water, reducing the possibility of missed detections, and triggering the float to rise, thereby improving detection sensitivity.

[0013] As described above, an elevator pit water accumulation detection device includes a pit body. The bottom inner wall of the pit body is provided with an installation frame. The top outer wall of the installation frame has two installation openings. The inner wall of each installation opening is provided with a water collection box. The outer circumference of the water collection box has eight water inlets. The bottom inner wall of the water collection box is provided with a water collection cylinder. The outer circumference of the water collection cylinder has four water inlets. A float is provided inside the water collection cylinder. A vertical rod is provided on the outer wall of the float. An installation cylinder is provided on the top outer wall of the water collection cylinder. A support plate is slidably connected to the inner circumference of the installation cylinder. The bottom outer wall of the support plate is fixedly connected to one end of the vertical rod. Two laser rangefinders are provided on the top inner wall of the installation cylinder. The elevator pit water accumulation detection device provided by this utility model has the technical effects of improving the accuracy of water accumulation detection, increasing the sensitivity of low water level detection, and extending the service life of the elevator. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a detection device for water accumulation in elevator pits proposed in this utility model.

[0015] Figure 2 This is a schematic diagram of the water collection box and water collection cylinder structure of a detection device for water accumulation in elevator pits proposed in this utility model.

[0016] Figure 3 This is a schematic cross-sectional view of the water collection box structure of a detection device for water accumulation in elevator pits proposed in this utility model.

[0017] Figure 4 This is an enlarged schematic diagram of section A of the detection device for water accumulation in elevator pits proposed in this utility model.

[0018] In the attached diagram: 1. Pit body; 2. Mounting frame; 3. Protective frame; 4. Mounting cover; 5. Alarm; 6. Water collection box; 7. Water inlet; 8. Water collection cylinder; 9. Float; 10. Upright pole; 11. Support plate; 12. Water inlet hole; 13. Laser rangefinder; 14. Fixing ring. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] The elevator pit water accumulation detection device disclosed in this utility model is mainly applied to scenarios where traditional elevator pit water accumulation detection devices have certain limitations in water accumulation detection, such as low sensitivity, easy false alarms or missed alarms, thus affecting the accuracy and reliability of water accumulation detection.

[0021] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A device for detecting water accumulation in elevator pits includes a pit body 1. The bottom inner wall of the pit body 1 is provided with an installation frame 2. The top outer wall of the installation frame 2 has two installation ports. The inner wall of the installation ports is provided with a water collection box 6. The outer circumference of the water collection box 6 is provided with eight water inlets 7. The bottom inner wall of the water collection box 6 is provided with a water collection cylinder 8. The outer circumference of the water collection cylinder 8 is provided with four water inlets 12. The inside of the water collection cylinder 8 is provided with a float 9. The outer wall of the float 9 is provided with a vertical rod 10. The top outer wall of the water collection cylinder 8 is provided with an installation cylinder. The inner circumference of the installation cylinder is slidably connected with a support plate 11. The bottom outer wall of the support plate 11 is fixedly connected to one end of the vertical rod 10. The top inner wall of the installation cylinder is provided with two laser rangefinders 13.

[0022] The top outer wall of the mounting frame 2 is equipped with a protective frame 3. The top outer wall of the protective frame 3 has two fixing holes. The inner wall of the fixing holes is equipped with a fixing ring 14. The top outer wall of the fixing ring 14 is equipped with four equally spaced support columns. The top outer wall of the support columns is equipped with a mounting cover 4. This arrangement effectively prevents hard objects such as metal parts and tools falling from the pit body 1 from directly impacting the core detection module water collection box 6 and the laser rangefinder 13. At the same time, it can also disperse the impact stress of accidental loads on the top, such as maintenance personnel stepping on it, to avoid local deformation.

[0023] In practical use, an alarm 5 is provided on the top inner wall of the mounting cylinder. The alarm 5 is electrically connected to two laser rangefinders 13. One end of the alarm 5 passes through the top outer wall of the mounting cover 4. The two laser rangefinders 13 are connected in parallel to the alarm 5. If any laser rangefinder 13 detects that (Dd) exceeds the limit, it will trigger an alarm, thereby improving the detection accuracy.

[0024] Specifically, after water enters the pit body 1, the water will flow into the water collection box 6 through eight inlets 7 along the bottom slope of the pit body 1. Then, the water will flow into the lowest part of the inner wall of the water collection box 6, so that the water flow can be gathered and flow into the interior through the water inlet 12 of the water collection cylinder 8, thereby driving the float 9 to move upward. At this time, the upright 10 has an upward thrust due to the water flow, so the support plate 11 slides upward in the inner wall of the mounting cylinder. Before water enters the pit body 1, the distance between the laser rangefinder 13 and the support plate 11 is set to D. After the support plate 11 slides upward in the mounting cylinder due to the water flow, the distance between the laser rangefinder 13 and the support plate 11 is set to d. When the distance Dd is less than the set safety value, the laser rangefinder 13 transmits an electrical signal to the alarm 5, which then sends a signal to the elevator main control board to indicate that there is water accumulation in the pit body 1, so that the staff can deal with the water accumulation in time.

[0025] Reference Figure 3 and Figure 4 In a preferred embodiment, the difference between the diameter of the float 9 and the diameter of the inner circumference of the water collecting cylinder 8 is less than 2 mm, and the gap between the float 9 and the inner wall of the water collecting cylinder 8 is small. Therefore, the float 9 can play a role in sealing the water collecting cylinder 8 to a certain extent. Thus, when there is little water inside the water collecting cylinder 8, the upright 10 and the support plate 11 will not move or change significantly.

[0026] Reference Figure 2 , Figure 3 and Figure 4 In a preferred embodiment, the water collecting cylinder 8 is a cylindrical structure. The cylindrical water collecting cylinder 8, together with the circumferentially distributed water inlet holes 12, forms a 360-degree annular water inlet channel, which can also reduce the interference of local turbulence on the movement of the float 9.

[0027] Reference Figure 3 In a preferred embodiment, the cross-section of the water collection box 6 is a stepped structure, and the water collection cylinder 8 is located at the lowest point of the bottom inner wall of the water collection box 6. This arrangement ensures that all water entering the water collection box 6 will eventually converge at the lowest point and then enter the water collection cylinder 8. This ensures that even if the water volume is small, it can be concentrated into the water collection cylinder 8, more effectively collecting accumulated water, reducing the possibility of missed detection, and triggering the float 9 to rise, thereby improving the sensitivity of detection.

[0028] Reference Figure 2 and Figure 3 In a preferred embodiment, the fixing ring 14 is located directly above the water collection box 6, and the two water collection boxes 6 are symmetrically distributed about the axis of the pit body 1. This arrangement helps to eliminate the detection blind spots present in the traditional single-sided layout. By comparing the data of the two water collection boxes 6, a three-dimensional water level model of the pit body 1 can be established to locate local water accumulation areas and guide precise drainage.

[0029] Working principle: After water enters the pit body 1, the water will flow into the water collection box 6 through eight inlets 7 along the bottom slope of the pit body 1. Then, the water will flow into the lowest part of the inner wall of the water collection box 6, so that the water flow can be collected and flow into the interior through the water inlet 12 of the water collection cylinder 8, thereby driving the float 9 to move upward. At this time, the upright 10 has an upward thrust due to the water flow, so the support plate 11 slides upward in the inner wall of the mounting cylinder. Before water enters the pit body 1, the distance between the laser rangefinder 13 and the support plate 11 is set to D. After the support plate 11 slides upward in the mounting cylinder due to the water flow, the distance between the laser rangefinder 13 and the support plate 11 is set to d. When the distance Dd is less than the set safety value, the laser rangefinder 13 transmits an electrical signal to the alarm 5, which then sends a signal to the elevator main control board to indicate that there is water accumulation in the pit body 1, so that the staff can deal with the water accumulation in time.

[0030] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A detection device for water accumulation in an elevator pit, comprising a pit body (1), wherein the bottom inner wall of the pit body (1) is provided with a mounting frame (2), characterized in that, The top outer wall of the mounting frame (2) has two mounting openings. The inner wall of the mounting opening is provided with a water collection box (6). The outer circumference of the water collection box (6) is provided with eight water inlets (7). The bottom inner wall of the water collection box (6) is provided with a water collection cylinder (8). The outer circumference of the water collection cylinder (8) is provided with four water inlets (12). The inside of the water collection cylinder (8) is provided with a float (9). The outer wall of the float (9) is provided with a vertical rod (10). The top outer wall of the water collection cylinder (8) is provided with an mounting cylinder. The inner circumference of the mounting cylinder is slidably connected with a support plate (11). The bottom outer wall of the support plate (11) is fixedly connected to one end of the vertical rod (10). The top inner wall of the mounting cylinder is provided with two laser rangefinders (13).

2. The detection device for water accumulation in elevator pits according to claim 1, characterized in that, The top outer wall of the mounting frame (2) is provided with a protective frame (3). The top outer wall of the protective frame (3) has two fixing holes. The inner wall of the fixing hole is provided with a fixing ring (14). The top outer wall of the fixing ring (14) is provided with four equally spaced support columns. The top outer wall of the support column is provided with a mounting cover (4).

3. The detection device for water accumulation in elevator pits according to claim 2, characterized in that, An alarm (5) is provided on the top inner wall of the mounting cylinder. The alarm (5) is electrically connected to the two laser rangefinders (13). One end of the alarm (5) penetrates the top outer wall of the mounting cover (4).

4. The detection device for water accumulation in elevator pits according to claim 1, characterized in that, The difference between the diameter of the float (9) and the diameter of the inner circumference of the water collecting cylinder (8) is less than 2 mm.

5. The detection device for water accumulation in elevator pits according to claim 4, characterized in that, The water collection cylinder (8) has a cylindrical structure.

6. The detection device for water accumulation in elevator pits according to claim 1, characterized in that, The cross-section of the water collection box (6) is a stepped structure, and the water collection cylinder (8) is located at the lowest point of the bottom inner wall of the water collection box (6).

7. The detection device for water accumulation in elevator pits according to claim 2, characterized in that, The fixing ring (14) is located directly above the water collection box (6), and the two water collection boxes (6) are symmetrically distributed about the axis of the pit body (1).

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