Elevator shaft pit accumulated water detection device and detection method

Abstract

The invention discloses an elevator shaft pit accumulated water detection device and method, the elevator shaft pit accumulated water detection device comprises a supporting frame, a mounting arm, a rotating seat, a clamping structure, a liquid level meter and a positioning structure, the supporting frame stands at the corner of an elevator pit, the mounting arm is mounted on the supporting frame, and the rotating seat is arranged on the supporting frame; the mounting arm can move in the Y direction relative to the supporting frame, a rotating seat is mounted on the mounting arm, the rotating seat can rotate around the axis of the mounting arm in the Z direction, the Z direction is perpendicular to the Y direction, a clamping structure is mounted on the rotating seat, and the clamping structure is used for clamping a pipe fitting at the bottom of the liquid level meter; a positioning structure is mounted on the mounting arm and used for limiting movement of the mounting arm relative to the supporting frame and limiting rotation of the rotating base relative to the mounting arm. According to the elevator shaft pit accumulated water detection device and method, the problem that in the prior art, a pit water level active monitoring device suitable for an elevator cannot be adjusted is solved.

Description

Technical Field

[0001] The present invention relates to the field of elevator detection, and in particular to a device and method for detecting water accumulation in a bottom pit of an elevator shaft. Background Art

[0002] A Chinese patent discloses an active pit water level monitoring device for elevators with application number CN202320856611.0. The active pit water level monitoring device for elevators includes an elevator control cabinet, a low water level detection switch, and a high water level detection switch. The low water level detection switch and the high water level detection switch are connected to a main control module, and the main control module is electrically connected to a communication module; the elevator control cabinet is connected to a voice player. When the water in the pit reaches the water level warning line, the main control module will send a high water level water accumulation signal to the elevator control cabinet, allowing the elevator in the elevator control cabinet to automatically run to the nearest floor and automatically open the elevator door. At the same time, the main control module controls the voice player to broadcast voice to guide passengers to evacuate; then the elevator is stopped, and at the same time, a flooding signal is automatically sent to the property end, the owner end APP and the elevator maintenance end through the active remote monitoring system.

[0003] Although the active monitoring device for the pit water level of the elevator can detect the water level, it still has the following disadvantages: since the bottom surface of the elevator pit is not necessarily in the horizontal direction, there are some places that are lower, and the accumulated water is easy to accumulate in the lower position, and the above-mentioned active monitoring device for the pit water level of the elevator cannot be adjusted, and the active monitoring device for the pit water level of the elevator cannot be installed in a higher position, and the deepest water level cannot be detected at a lower position. Summary of the invention

[0004] The present invention aims to provide an elevator shaft pit water accumulation detection device and detection method, so as to solve the problem that the active pit water level monitoring device applicable to elevators in the prior art cannot be adjusted.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention firstly discloses a device for detecting water accumulation in a bottom pit of an elevator shaft, comprising: a support frame, a mounting arm, a rotating seat, a clamping structure, a liquid level meter and a positioning structure. The support frame stands at a corner of the bottom pit of the elevator. The support frame is provided with a mounting arm, and the mounting arm can move in the Y direction relative to the support frame. The mounting arm is provided with a rotating seat, and the axis around which the rotating seat can rotate is in the Z direction, and the Z direction is perpendicular to the Y direction. The rotating seat is provided with a clamping structure, and the clamping structure is used for clamping a pipe fitting at the bottom of the liquid level meter. The mounting arm is provided with a positioning structure, and the positioning structure is used for limiting the movement of the mounting arm relative to the support frame, and limiting the rotation of the rotating seat relative to the mounting arm.

[0007] Preferably, the clamping structure includes: a fixed clamping arm and a movable clamping arm, the fixed clamping arm is installed on a rotating seat, the movable clamping arm is installed on the rotating seat, the movable clamping arm can move in the Z direction relative to the rotating seat, and the movable clamping arm cooperates with the fixed clamping arm to clamp the pipe at the bottom of the liquid level meter.

[0008] Preferably, the positioning structure is also used to limit the movement of the movable clamping arm relative to the rotating seat.

[0009] Preferably, a clamping pad is fixed on both the fixed clamping arm and the movable clamping arm, and the clamping pad is made of elastic material.

[0010] Preferably, a convex ring is protruded from the pipe, and the convex ring is supported by the fixed clamping arm and the movable clamping arm.

[0011] Preferably, the positioning structure includes: an adjusting screw, a clamping nut, a gear, a first gear ring, a second gear ring, a clamping block, a positioning block and a positioning rack. The adjusting screw is threadedly connected to the mounting arm and is located in the Z direction. Two clamping nuts are threadedly connected to the adjusting screw. A clamping block and a positioning block are placed between the two clamping nuts. Both the clamping block and the positioning block are passed through by the adjusting screw. The clamping block is used to press the movable clamping arm onto the pipe fitting at the bottom of the liquid level meter. A first gear ring is fixed to the clamping block, and a second gear ring is fixed to the positioning block. The axis line of the first gear ring, the axis line of the second gear ring and the axis line of the gear are all in a straight line. The gear is fixed on a rotating shaft, and the rotating seat and the mounting arm are hinged through the rotating shaft. The positioning block can move in the Z direction under the guidance of the mounting arm. A positioning tooth is fixed to the positioning block, and a positioning rack in the Y direction is installed on the support frame, and the positioning tooth can mesh with the positioning rack.

[0012] Preferably, a displacement sensor is installed on the mounting arm, and the displacement sensor is used to detect the distance y between the bottom end of the support frame and the mounting arm. An angle sensor is installed at the hinge between the rotating seat and the mounting arm, and the angle sensor is used to detect the angle a after the rotating seat rotates from the horizontal direction. The distance between the liquid level detected by the liquid level meter and the liquid level meter is d. The output end of the angle sensor, the output end of the displacement sensor and the output end of the liquid level meter are all connected to the control box, and the control box makes a water level warning judgment based on y, a and d.

[0013] The present invention also discloses a method for detecting water accumulation in a bottom pit of an elevator shaft, comprising the following steps:

[0014] S1. Obtain the distance y between the bottom of the support frame and the mounting arm through the displacement sensor, obtain the angle a of the rotating seat after it rotates from the horizontal direction through the angle sensor, and obtain the distance d between the liquid surface in the elevator pit and the liquid level meter through the liquid level meter;

[0015] S2. Calculate the water height h based on y, a and d;

[0016] S3. Determine whether h is greater than a set value H0. If so, an excessive water accumulation alarm is issued; if not, the water accumulation is determined to be normal.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the present application, firstly, a support frame is provided as the supporting base of the entire elevator shaft pit water accumulation detection device; then, a mounting arm is provided, and the support frame can slide in the Y direction relative to the mounting arm, so that the liquid level meter can be adjusted to a specified height as needed during installation; then, a rotating seat on the mounting arm is designed to be rotatable, and a clamping structure for clamping the liquid level meter is installed on the rotating seat, so that the support frame can be installed in a corner to avoid affecting the installation of the elevator maintenance blocking frame, etc., and at the same time, the liquid level meter can be rotated to the lower position of the detection pit, so that the water accumulation height at a lower position can be detected to avoid safety accidents caused by excessive water accumulation at a lower position; finally, a positioning structure is designed, and the positioning mechanism can be adjusted to position the rotating seat on the mounting arm and the mounting arm on the support frame.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the elevator shaft pit water accumulation detection device.

[0021] Figure 2 This is a schematic diagram of the structure after the top of the rotating seat is opened.

[0022] Figure 3 This is the front view of the elevator shaft pit water detection device.

[0023] Figure numerals: support frame 1, mounting arm 2, rotating seat 3, clamping structure 4, fixed clamping arm 41, movable clamping arm 42, liquid level meter 5, convex ring 50, pipe fitting 51, positioning structure 6, adjusting screw 61, clamping nut 62, gear 63, first gear ring 64, second gear ring 65, clamping block 66, positioning block 67, positioning tooth 670, positioning rack 68, displacement sensor 7. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0025] Example 1

[0026] like Figures 1 to 3As shown, this embodiment discloses an elevator shaft pit water accumulation detection device, comprising: a support frame 1, a mounting arm 2, a rotating seat 3, a clamping structure 4, a liquid level meter 5 and a positioning structure 6. The support frame 1 stands at the corner of the elevator pit, and the mounting arm 2 is installed on the support frame 1. The mounting arm 2 can move in the Y direction relative to the support frame 1. The rotating seat 3 is installed on the mounting arm 2. The rotating seat 3 can rotate around the mounting arm 2 about an axis in the Z direction, and the Z direction is perpendicular to the Y direction. The clamping structure 4 is installed on the rotating seat 3, and the clamping structure 4 is used to clamp the pipe 51 at the bottom of the liquid level meter 5; the positioning structure 6 is installed on the mounting arm 2, and the positioning structure 6 is used to limit the movement of the mounting arm 2 relative to the support frame 1, and limit the rotation of the rotating seat 3 relative to the mounting arm 2.

[0027] The clamping structure 4 includes: a fixed clamping arm 41 and a movable clamping arm 42. The fixed clamping arm 41 is installed on the rotating seat 3. The movable clamping arm 42 is installed on the rotating seat 3. The movable clamping arm 42 can move in the Z direction relative to the rotating seat 3. The movable clamping arm 42 cooperates with the fixed clamping arm 41 to clamp the pipe 51 at the bottom of the liquid level gauge 5. When the liquid level gauge 5 is disassembled, the movable clamping arm 42 is moved away from the pipe 51 in the liquid level gauge 5, so that the liquid level gauge 5 can be disassembled. When the liquid level gauge 5 is installed, the movable clamping arm 42 is adjusted to move and clamp the pipe 51 in the liquid level gauge 5.

[0028] The positioning structure 6 is also used to limit the movement of the movable clamping arm 42 relative to the rotating seat 3. Thus, the positioning structure 6 has three functions: function 1: positioning the rotating seat 3 on the mounting arm 2; function 2: positioning the mounting arm 2 on the support frame 1; and function 3: positioning the movable clamping arm 42 on the rotating seat 3.

[0029] A clamping pad is fixed on both the fixed clamping arm 41 and the movable clamping arm 42. The clamping pad is made of elastic material. The design of the clamping pad avoids pinching the pipe 51 in the liquid level meter 5.

[0030] A convex ring 50 is protruded from the pipe 51, and the convex ring 50 is supported by the fixed clamping arm 41 and the movable clamping arm 42. The convex ring 50, the fixed clamping arm 41 and the movable clamping arm 42 cooperate to support the entire liquid level meter 5.

[0031] The positioning structure 6 includes: an adjusting screw 61, a clamping nut 62, a gear 63, a first gear ring 64, a second gear ring 65, a clamping block 66, a positioning block 67 and 670 positioning teeth. The adjusting screw 61 is threadedly connected to the mounting arm 2, and the adjusting screw 61 is located in the Z direction. Two clamping nuts 62 are threadedly connected to the adjusting screw 61. A clamping block 66 and a positioning block 67 are placed between the two clamping nuts 62. The clamping block 66 and the positioning block 67 are both passed through by the adjusting screw 61. The clamping block 66 is used to press the movable clamping arm 42 against the bottom of the liquid level meter 5. On component 51, a first gear ring 64 is fixed on a clamping block 66, a second gear ring 65 is fixed on a positioning block 67, the axis line of the first gear ring 64, the axis line of the second gear ring 65 and the axis line of the gear 63 are all on a straight line, the gear 63 is fixed on a rotating shaft, the rotating seat 3 and the mounting arm 2 are hinged through the rotating shaft, the positioning block 67 can move in the Z direction under the guidance of the mounting arm 2, a positioning tooth 670 is fixed on the positioning block 67, and 670 positioning teeth in the Y direction are installed on the support frame 1, and the positioning tooth 670 can mesh with 670 positioning teeth. Before installing and positioning the entire liquid level meter 5, the length of the adjusting screw 61 extending into the mounting arm 2 is relatively short. At this time, the clamping block 66 does not clamp the movable clamping arm 42, and the positioning tooth 670 on the positioning arm is also away from the rack. At this time, the first gear ring 64 and the second gear ring 65 are both away from the gear 63. At this time, the position of the mounting arm 2 on the support frame 1 can be adjusted, and the relative position of the rotating seat 3 and the mounting arm 2 can also be adjusted. When the mounting arm 2 and the rotating seat 3 are adjusted into position, the rotating adjusting screw 61 is extended into the mounting arm 2, and the two clamping nuts 62 enable the adjusting screw 61 to drive the clamping block 66 to move toward the movable clamping arm 42, and the positioning tooth 670 on the positioning block 67 moves toward the rack. Finally, the clamping block 66 presses the movable clamping arm 42 onto the pipe fitting 51 in the liquid level meter 5, and the positioning tooth 670 on the positioning arm engages with the rack. At this time, the first gear ring 64 and the second gear ring 65 are both engaged with the gear 63. At this time, the mounting arm 2 is positioned on the support frame 1, and the rotating seat 3 and the mounting arm 2 are also positioned.

[0032] A displacement sensor 7 is installed on the mounting arm 2. The displacement sensor 7 is used to detect the distance y between the bottom of the support frame 1 and the mounting arm 2. An angle sensor is installed at the hinge between the rotating seat 3 and the mounting arm 2. The angle sensor is used to detect the angle a after the rotating seat 3 rotates from the horizontal direction. The distance d between the liquid level in the elevator pit and the liquid level gauge 5 is detected by the liquid level gauge 5. The output end of the angle sensor, the output end of the displacement sensor 7 and the output end of the liquid level gauge 5 are all connected to the control box. The control box makes a water level warning judgment based on y, a and d. Since the relative position of the mounting arm 2 and the support frame 1 is not certain after installation, and the relative position of the rotating seat 3 and the mounting arm 2 is not certain, the displacement sensor 7 and the angle sensor are designed to detect the relative position relationship between the components, so as to adjust d and obtain the subsequent lowest position water accumulation height h, so that h conforms to the actual value and will not be affected by adjusting the relative position relationship.

[0033] Example 2

[0034] like Figure 3 As shown, this embodiment discloses a method for detecting water accumulation in the bottom pit of an elevator shaft based on the device for detecting water accumulation in the bottom pit of an elevator shaft described in Embodiment 1, comprising the following steps:

[0035] S1. Obtain the distance y between the bottom end of the support frame 1 and the mounting arm 2 through the displacement sensor 7, obtain the angle a of the rotating seat 3 after it rotates from the horizontal direction through the angle sensor, and obtain the distance d between the liquid surface in the elevator pit and the liquid level meter 5 through the liquid level meter 5;

[0036] S2. Calculate the water height h based on y, a and d;

[0037] S3. Determine whether h is greater than a set value H0. If so, an excessive water accumulation alarm is issued; if not, the water accumulation is determined to be normal.

[0038] Step S21 includes the following steps:

[0039] S21, the liquid level meter uses an infrared displacement sensor. When it detects that there is no water accumulation, the distance between the lowest point of the elevator pit and the liquid level meter is w;

[0040] S22, calculating error Δz, Δz=w*cos ay;

[0041] S23, calculate h,

[0042] In the above steps, if h is calculated as w*cos ad*cos a, the second angle between the distance d and the vertical direction should be greater than a due to the inclination of the bottom surface of the elevator pit. However, when it is close to a, cosa is greater than the cosine value of the second angle. Therefore, w*cos ad*cos a is used to calculate a value close to h. However, the calculated value should be greater than the actual h value. Therefore, To reduce the total value of w*cos ad*cos a a little, so that the value of h is closer to the actual water height.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An elevator shaft pit water detection device, characterized in that: include: A support frame, a mounting arm, a rotating seat, a clamping structure, a liquid level gauge and a positioning structure. The support frame stands at the corner of the elevator pit. The mounting arm is installed on the support frame. The mounting arm can move in the Y direction relative to the support frame. The mounting arm is installed with a rotating seat. The axis of the rotating seat that can rotate around the mounting arm is in the Z direction, and the Z direction is perpendicular to the Y direction. The rotating seat is installed with a clamping structure, which is used to clamp the pipe fittings at the bottom of the liquid level gauge; the mounting arm is installed with a positioning structure, which is used to limit the movement of the mounting arm relative to the support frame and limit the rotation of the rotating seat relative to the mounting arm.

2. The elevator shaft pit water accumulation detection device according to claim 1, characterized in that: The clamping structure includes: a fixed clamping arm and a movable clamping arm. The fixed clamping arm is installed on a rotating seat. The movable clamping arm is installed on the rotating seat. The movable clamping arm can move in the Z direction relative to the rotating seat. The movable clamping arm cooperates with the fixed clamping arm to clamp the pipe at the bottom of the liquid level meter.

3. The elevator shaft pit water accumulation detection device according to claim 2, characterized in that: The positioning structure is also used to limit the movement of the movable clamping arm relative to the rotating seat.

4. The elevator shaft pit water accumulation detection device according to claim 3, characterized in that: A clamping pad is fixed on both the fixed clamping arm and the movable clamping arm, and the clamping pad is made of elastic material.

5. The elevator shaft pit water accumulation detection device according to claim 4, characterized in that: A convex ring is protruded from the pipe fitting and is supported by a fixed clamping arm and a movable clamping arm.

6. The elevator shaft pit water accumulation detection device according to claim 3, characterized in that: The positioning structure includes: an adjusting screw, a clamping nut, a gear, a first gear ring, a second gear ring, a clamping block, a positioning block and a positioning rack. The adjusting screw is threadedly connected to the mounting arm, and the adjusting screw is located in the Z direction. Two clamping nuts are threadedly connected to the adjusting screw. A clamping block and a positioning block are placed between the two clamping nuts. Both the clamping block and the positioning block are passed through by the adjusting screw. The clamping block is used to clamp the movable clamping arm onto the pipe fitting at the bottom of the liquid level meter. A first gear ring is fixed on the clamping block, and a second gear ring is fixed on the positioning block. The axis center line of the first gear ring, the axis center line of the second gear ring and the axis center line of the gear are all in a straight line. The gear is fixed on a rotating shaft, and the rotating seat and the mounting arm are hinged through the rotating shaft. The positioning block can move in the Z direction under the guidance of the mounting arm. A positioning tooth is fixed on the positioning block, and a positioning rack in the Y direction is installed on the support frame, and the positioning tooth can mesh with the positioning rack.

7. The elevator shaft pit water accumulation detection device according to claim 1, characterized in that: A displacement sensor is installed on the mounting arm, and the displacement sensor is used to detect the distance y between the bottom end of the support frame and the mounting arm. An angle sensor is installed at the hinge between the rotating seat and the mounting arm, and the angle sensor is used to detect the angle a after the rotating seat rotates from the horizontal direction. The distance between the liquid level detected by the liquid level meter and the liquid level meter is d. The output end of the angle sensor, the output end of the displacement sensor and the output end of the liquid level meter are all connected to the control box, and the control box makes a water level warning judgment based on y, a and d.

8. A method for detecting water accumulation in an elevator shaft pit, characterized in that: The steps include: S1. Obtain the distance y between the bottom of the support frame and the mounting arm through the displacement sensor, obtain the angle a of the rotating seat after it rotates from the horizontal direction through the angle sensor, and obtain the distance d between the liquid surface in the elevator pit and the liquid level meter through the liquid level meter; S2. Calculate the water height h based on y, a and d; S3. Determine whether h is greater than the set value H0. If so, an excessive water accumulation alarm is issued; if not, the water accumulation is determined to be normal.

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