Indirect measuring instrument for engagement depth of guide shoe of elevator landing door in use

Abstract

The invention discloses an indirect measuring instrument for the meshing depth of guide shoes of elevator floor doors in use, which comprises: a shell and a measuring component, wherein a microprocessor, a buzzer, a battery, a motor, a screw, a screw sleeve, a gear, an upper and lower telescopic rod, and a displacement sensor are arranged inside the shell, and the measuring component consists of a Z-shaped connecting piece, a measuring head and a film pressure sensor; a first gear and a second gear are meshed and transmitted with each other, the microprocessor is connected with the motor, the first gear is coaxially connected with the motor, the second gear is coaxially connected with the upper and lower telescopic rods through a screw and a screw sleeve, the upper and lower telescopic rods are connected with the Z-shaped connecting piece, one end of the Z-shaped connecting piece passes through a shell window and is connected with the upper and lower telescopic rods, and the other end is provided with a measuring head and a film pressure sensor, the displacement sensor is arranged in the shell and is connected with the Z-shaped connecting piece through the displacement sensor telescopic rod; the measuring instrument has a simple structure, is convenient to operate, has high numerical value accuracy, avoids errors in manual measurement, and effectively ensures the safety of elevator use.

Description

Technical Field

[0001] The invention belongs to the technical field of elevator detection, and in particular relates to an indirect measuring instrument for the meshing depth of guide shoes of elevator landing doors. Background Art

[0002] Elevator safety is receiving more and more attention, and most elevator accidents occur at the landing door. In recent years, there have been incidents of people kicking the elevator landing door or hitting the landing door with other unrelated objects. The quality of the landing door operation directly affects the safety of the elevator. The meshing depth of the landing door guide shoe has the function of preventing the bottom of the elevator landing door from falling off the sill after being hit by external force, and preventing the elevator from causing safety accidents due to the landing door falling off the sill. During the use of the elevator, the guide shoe at the bottom of the landing door may be worn or displaced after a period of use, which may affect the safety of the landing door operation. This will directly lead to the consequence that the engagement depth of the landing door guide shoe is insufficient, which makes it possible for external force to hit the landing door and make the landing door loose or displaced, and its serious consequences can be imagined. In order to ensure the safety of the elevator landing door operation, the minimum value of the meshing depth of the elevator horizontal sliding landing door guide shoe should meet the design requirements of the manufacturer or the minimum meshing depth size allowed by the guide device indicated in the type test report.

[0003] At present, the conventional detection method is to use traditional measuring instruments for measurement, that is, to use a steel tape measure to directly measure or to use an inclined feeler gauge to indirectly measure the engagement depth of the landing door guide shoe. The above measurement method has the following disadvantages:

[0004] 1. The measurement position is close to the bottom of the elevator door. The inspector needs to kneel on the ground to measure. At the same time, the person's eyes are not facing the scale of the measuring instrument. The values ​​measured by each person may be different, which leads to large human errors.

[0005] 2. The distance between the bottom of the elevator door leaf and the door sill is small, with a gap value of only a few millimeters. The space for placing traditional measuring instruments is extremely narrow, and traditional measuring instruments cannot be placed in a suitable position for measurement. The conditions for measurement are often not met on site.

[0006] 3. The oblique feeler gauge can only measure the slider on the side close to the front edge of the landing door. As for the slider far from the front edge of the landing door, it cannot be placed in the sill groove due to the limited space, and thus cannot be measured.

[0007] At present, there are many drawbacks in the measurement methods of the engagement depth of elevator floor door guide shoes in use in China. This measuring instrument is specially used to indirectly measure the engagement depth of elevator floor door guide shoes in use, and proposes a new detection method for the engagement depth of floor door guide shoes to provide technical support for elevator safety. Summary of the invention

[0008] The object of the present invention is to overcome the disadvantages of the above-mentioned background technology and to provide an indirect measuring instrument for the meshing depth of guide shoes of elevator floor doors in use.

[0009] The technical scheme of the present invention is: an indirect measuring instrument for the meshing depth of guide shoes of elevator floor doors in use, which comprises: a shell and a measuring component, wherein the shell is a rectangular parallelepiped structure, and a window for placing the measuring component is provided on the side thereof, a microprocessor, a buzzer, a battery, a motor, a screw, a screw sleeve, a gear, an upper and lower telescopic rod, and a displacement sensor are arranged inside the shell, and the measuring component is composed of a Z-type connector, a measuring head and a film pressure sensor; the gears have two, namely a first gear and a second gear, which are meshed and transmitted with each other, the microprocessor is connected with the motor, the first gear is coaxially connected with the motor, the second gear is coaxially connected with the upper and lower telescopic rods through the screw and the screw sleeve, the surface of the screw is provided with a thread for making the upper and lower telescopic rods move up and down when the screw rotates, the upper and lower telescopic rods are connected with the Z-type connector, one end of the Z-type connector is connected with the upper and lower telescopic rods through the shell window, and the other end is provided with a measuring head and a film pressure sensor, and the displacement sensor is arranged in the shell and connected with the Z-type connector through the displacement sensor telescopic rod.

[0010] The measuring head is provided with two thin film pressure sensors, which are respectively arranged on the upper surface and the lower surface of the measuring head. The measuring head is 5-8mm long, 5-8mm wide and 2-4mm thick.

[0011] The circuits of the film pressure sensor and the displacement sensor are connected in parallel with the microprocessor.

[0012] A display screen, a switch button and a measuring button are also arranged on the outer side of the shell. The display screen, the switch button and the measuring button are all connected with a battery and a microprocessor circuit.

[0013] A measuring method of an indirect measuring instrument for the meshing depth of guide shoes of elevator landing doors in use, the method comprising the following steps:

[0014] (1) Use a vernier caliper or other special measuring tool to measure the depth of the floor door sill and record it as H;

[0015] (2) Open the landing door and place the measuring head of the measuring instrument at the bottom of the landing door sill groove, ensuring that the part of the measuring instrument that penetrates into the landing door sill groove is in close contact with the bottom and inner wall of the landing door sill groove;

[0016] (3) Slowly close the landing door and move the measuring head of the measuring instrument horizontally along the bottom of the landing door sill groove until the measuring head of the measuring instrument is inserted into the gap between the bottom of the landing door guide shoe and the bottom of the landing door sill groove;

[0017] (4) Press the start switch button. When the measuring instrument is running, the measuring head of the measuring instrument automatically moves down to the bottom of the elevator pit groove under the drive of the motor. When the thin film pressure sensor on the lower side of the measuring head detects a pressure value of 10N, the microprocessor sends a stop command to the motor. When the motor stops running, the microprocessor automatically recognizes it as the starting point for measuring the gap between the bottom of the slider and the bottom of the pit groove;

[0018] Then the microprocessor sends a running instruction to the motor, and the first gear coaxial with the motor drives the second gear to rotate through meshing, the second gear is fixedly connected to the threaded screw, the screw rotates under the drive of the second gear, and the upper and lower telescopic rods are sleeved on the screw in a threaded connection manner;

[0019] When the screw rotates, the upper and lower telescopic rods will move upward, and the Z-shaped connector of the measuring instrument is rigidly connected with the upper and lower telescopic rods coaxial with the second gear and the telescopic rod of the displacement sensor. When the upper and lower telescopic rods move upward, the Z-shaped connector and the telescopic rod of the displacement sensor move upward together; when the thin film pressure sensor on the upper side of the measuring head detects a pressure value of 10N, the microprocessor sends a stop command to the motor, and the motor stops running; at this time, the sum of the distance d that the measuring head runs from the bottom to the top and the thickness 1 of the measuring head is the engagement depth h of the elevator floor door guide shoe.

[0020] (5) According to formula (1), the engagement depth of the landing door guide shoe is calculated as:

[0021] h=He=H-(d+l)

[0022] Where:

[0023] h——engagement depth of landing door guide shoe, in mm;

[0024] H——the depth of the floor door sill, in mm;

[0025] e——the gap between the bottom of the landing door guide shoe and the bottom of the sill groove, in mm;

[0026] l——The thickness of the measuring head of the measuring instrument, in (mm), the thickness value is 4mm;

[0027] d——the distance the measuring instrument moves when measuring, in mm;

[0028] The beneficial effects of the present invention are as follows: the measuring instrument has a simple structure, convenient operation, high numerical accuracy of the measurement, avoids the error of manual measurement, and effectively ensures the safety of elevator use; at the same time, the measuring instrument adopts an indirect measurement method, firstly, a steel ruler is used to measure the depth of the sill groove, and then the measuring head of the measuring instrument is used to measure the distance it moves in the sill, and then the distance value plus the thickness of the measuring head of the measuring instrument is the gap between the bottom of the slider and the bottom of the pit groove, and finally the difference between the sill groove depth and the above gap value is the meshing depth of the landing door guide shoe. This method is a new detection method for the meshing depth of the landing door guide shoe, and provides technical support for elevator safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0031] Figure 3 is a circuit schematic diagram of the present invention;

[0032] Figure 4 This is a schematic diagram of measuring the engagement depth of guide shoes of elevator landing doors according to the present invention;

[0033] Among them: 1. Shell, 2. Motor, 3. Screw, 4. Screw sleeve, 5. First gear, 6. Second gear, 7. Upper and lower telescopic rods, 8. Displacement sensor, 9. Displacement sensor telescopic rod, 10. Z-type connector, 11. Measuring head, 12. Thin film pressure sensor. 13. Microprocessor, 14. Buzzer, 15. Battery, 16. Display, 17. Landing door, 18. Metal connector, 19. Slider, 20. Landing door sill, 21. Indirect measuring instrument for the meshing depth of the guide shoe of the elevator landing door in use. DETAILED DESCRIPTION

[0034] This embodiment is an indirect measuring instrument for the meshing depth of guide shoes of elevator landing doors in use, which comprises: a housing (1) and a measuring component, such as Figure 1 , Figure 2As shown, the housing (1) is a rectangular parallelepiped structure, with a window on the side for accommodating the measuring component. The housing (1) is provided with a microprocessor (13), a buzzer (14), a battery (15), a motor (2), a screw (3), a screw sleeve (4), a gear, an upper and lower telescopic rod (7), and a displacement sensor (8). The measuring component is composed of a Z-shaped connector (10), a measuring head (11) and a thin film pressure sensor (12); the gears are a first gear (5) and a second gear (6), the first gear (5) and the second gear (6) are meshed with each other for transmission, the microprocessor (13) is connected to the motor (2), and the first gear (5) and the second gear (6) are meshed with each other for transmission. A gear (5) is coaxially connected to a motor (2); a second gear (6) is coaxially connected to an upper and lower telescopic rod (7) through a screw rod (3) and a screw sleeve (4); a thread is provided on the surface of the screw rod (3) so that the upper and lower telescopic rods (7) can move up and down when the screw rod (3) rotates; the upper and lower telescopic rods (7) are connected to a Z-shaped connecting piece (10); one end of the Z-shaped connecting piece (10) passes through a window of a housing (1) and is connected to the upper and lower telescopic rods (7); the other end of the Z-shaped connecting piece (10) is provided with a measuring head (11) and a thin film pressure sensor (12); the displacement sensor (8) is arranged in the housing (1) and is connected to the Z-shaped connecting piece (10) through a displacement sensor telescopic rod (9).

[0035] The measuring head (11) is provided with two thin film pressure sensors (12), which are respectively arranged on the upper surface and the lower surface of the measuring head (11). The measuring head (11) is 5 to 8 mm long, 5 to 8 mm wide and 2 to 4 mm thick.

[0036] The outer side of the housing (1) is also provided with a display screen (16), a switch button and a measuring button. The display screen (16), the switch button and the measuring button are all connected to the battery (15) and the microprocessor (13) circuit.

[0037] like Figure 4 As shown, a measuring method of an indirect measuring instrument for the meshing depth of guide shoes of elevator landing doors in use, the method comprising the following steps:

[0038] (1) Use a vernier caliper or other special measuring tool to measure the depth of the groove of the landing door sill (21) and record it as H;

[0039] (2) Open the landing door (17), place the measuring head (11) of the measuring instrument at the bottom of the sill groove, and ensure that the portion of the measuring instrument that penetrates into the groove of the landing door sill (21) is in close contact with the bottom and inner wall of the groove of the landing door sill (21);

[0040] (3) Slowly close the landing door (17), and move the measuring head (11) of the measuring instrument horizontally along the bottom of the landing door sill (21) groove until the measuring head (11) of the measuring instrument is inserted into the gap between the bottom of the landing door guide shoe and the bottom of the landing door sill groove;

[0041] (4) When the switch button is turned on, the measuring instrument is running. Driven by the motor, the measuring head (11) of the measuring instrument automatically moves downward to the bottom of the elevator pit groove. When the thin film pressure sensor (12) on the lower side of the measuring head detects a pressure value of 10N, the microprocessor (13) sends a stop instruction to the motor (2). When the motor (2) stops running, the microprocessor (13) automatically recognizes it as the starting point for measuring the gap between the bottom of the slider (19) and the bottom of the pit groove;

[0042] Then the microprocessor (13) sends an operating instruction to the motor (2), and the first gear (5) coaxial with the motor (2) drives the second gear (6) to rotate through meshing, and the second gear (6) is fixedly connected to the threaded screw (3), and the screw (3) rotates under the drive of the second gear (6), and the upper and lower telescopic rods (7) are sleeved on the screw (3) in a threaded connection manner;

[0043] When the screw rod (3) rotates, the upper and lower telescopic rods (7) move upwards, and the Z-shaped connecting piece (10) of the measuring instrument is rigidly connected with the upper and lower telescopic rods (7) and the displacement sensor telescopic rod (9) coaxially with the second gear (6). When the upper and lower telescopic rods (7) move upwards, the Z-shaped connecting piece and the displacement sensor telescopic rod (9) move upwards together. When the film pressure sensor (12) on the upper side of the measuring head (11) detects a pressure value of 10N, the microprocessor (13) sends a stop instruction to the motor (2), and the motor (2) stops running. At this time, the sum of the distance d that the measuring head (11) runs from the bottom to the top and the thickness 1 of the measuring head is the engagement depth h of the elevator floor door guide shoe.

[0044] (5) According to formula (1), the engagement depth of the landing door guide shoe is calculated as:

[0045] h=He=H-(d+l)

[0046] Where:

[0047] h——engagement depth of landing door guide shoe, in mm;

[0048] H——the depth of the floor door sill, in mm;

[0049] e——the gap between the bottom of the landing door guide shoe and the bottom of the sill groove, in mm;

[0050] l——The thickness of the measuring head of the measuring instrument, in (mm), the thickness value is 4mm;

[0051] d – The distance the measuring instrument moves during measurement, in mm.

Claims

1. An indirect measuring instrument for the meshing depth of guide shoes of elevator landing doors in use, comprising: The shell and the measuring component are characterized in that the shell is a rectangular parallelepiped structure, with a window on the side for placing the measuring component, a microprocessor, a buzzer, a battery, a motor, a screw, a screw sleeve, a gear, an upper and lower telescopic rod, and a displacement sensor are arranged inside the shell, and the measuring component is composed of a Z-shaped connector, a measuring head and a thin film pressure sensor; there are two gears, namely the first gear and the second gear, which are meshed with each other for transmission, the microprocessor is connected to the motor, the first gear is coaxially connected to the motor, and the second gear is coaxially connected to the upper and lower telescopic rods through the screw and the screw sleeve, and the surface of the screw is provided with a screw that is convenient for the upper and lower telescopic rods to rotate when the screw rotates. The upper and lower telescopic rods are connected to a Z-shaped connector, one end of the Z-shaped connector passes through a shell window and is connected to the upper and lower telescopic rods, and the other end is provided with a measuring head and a thin film pressure sensor. The displacement sensor is arranged in the shell and connected to the Z-shaped connector through the displacement sensor telescopic rod; the measuring head is provided with two thin film pressure sensors, which are respectively arranged on the upper surface and the lower surface of the measuring head, and the measuring head is 5 to 8 mm long, 5 to 8 mm wide, and 2 to 4 mm thick; a display screen, a switch button and a measuring button are also provided on the outside of the shell, and the display screen, the switch button and the measuring button are all connected to a battery and a microprocessor circuit.

2. A measuring method for an indirect measuring instrument for the meshing depth of elevator door guide shoes, characterized in that The method comprises the following steps: (1) Use a vernier caliper or other special measuring tool to measure the depth of the floor door sill and record it as H; (2) Open the landing door and place the measuring head of the measuring instrument at the bottom of the landing door sill groove, ensuring that the part of the measuring instrument that penetrates into the landing door sill groove is in close contact with the bottom and inner wall of the landing door sill groove; (3) Slowly close the landing door and move the measuring head of the measuring instrument horizontally along the bottom of the landing door sill groove until the measuring head of the measuring instrument is inserted into the gap between the bottom of the landing door guide shoe and the bottom of the landing door sill groove; (4) Press the start switch button. When the measuring instrument is running, the measuring head of the measuring instrument automatically moves down to the bottom of the elevator pit groove under the drive of the motor. When the thin film pressure sensor on the lower side of the measuring head detects a pressure value of 10N, the microprocessor sends a stop command to the motor. When the motor stops running, the microprocessor automatically recognizes it as the starting point for measuring the gap between the bottom of the slider and the bottom of the pit groove; Then the microprocessor sends a running instruction to the motor, and the first gear coaxial with the motor drives the second gear to rotate through meshing, the second gear is fixedly connected to the threaded screw, the screw rotates under the drive of the second gear, and the upper and lower telescopic rods are sleeved on the screw in a threaded connection manner; When the screw rotates, the upper and lower telescopic rods will move upward, and the Z-shaped connector of the measuring instrument is rigidly connected with the upper and lower telescopic rods and the telescopic rod of the displacement sensor coaxial with the second gear. When the upper and lower telescopic rods move upward, the Z-shaped connector and the telescopic rod of the displacement sensor move upward together; when the film pressure sensor on the upper side of the measuring head detects a pressure value of 10N, the microprocessor sends a stop command to the motor, and the motor stops running; at this time, the sum of the distance d that the measuring head runs from the bottom to the top and the thickness 1 of the measuring head is the engagement depth h of the elevator door guide shoe; (5) According to formula (1), the engagement depth of the landing door guide shoe is calculated as: h=He=H-(d+l) Where: h——engagement depth of landing door guide shoe, in mm; H——the depth of the floor door sill, in mm; e——the gap between the bottom of the landing door guide shoe and the bottom of the sill groove, in mm; l——The thickness of the measuring head of the measuring instrument, in (mm), the thickness value is 4mm; d – The distance the measuring instrument moves during measurement, in mm.

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