CN113639693A - Handheld device for measuring gap of elevator door and strength of elevator shaft wall - Google Patents

Handheld device for measuring gap of elevator door and strength of elevator shaft wall Download PDF

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Publication number
CN113639693A
CN113639693A CN202010422016.7A CN202010422016A CN113639693A CN 113639693 A CN113639693 A CN 113639693A CN 202010422016 A CN202010422016 A CN 202010422016A CN 113639693 A CN113639693 A CN 113639693A
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Prior art keywords
cylinder
value
elevator
pressure
gas
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陈明涛
沈俊华
阮一晖
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Special Equipment Safety Supervision Inspection Institute of Jiangsu Province
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Special Equipment Safety Supervision Inspection Institute of Jiangsu Province
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Priority to CN202010422016.7A priority Critical patent/CN113639693A/en
Publication of CN113639693A publication Critical patent/CN113639693A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12—Pressure testing

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)

Abstract

The invention discloses a handheld device for measuring the gap of an elevator door and the strength of an elevator shaft wall, which consists of a shell, a pneumatic driving system and an electrical control system, wherein the pneumatic driving system consists of a screw cover, a push plate, a cylinder, a miniature supercharging air pump, a pipeline, an overflow valve and the like; the shell is of a cuboid structure with a hollow interior; the device has the advantages of small volume, light weight, simple operation, high working efficiency and high measurement precision; the defects of low working efficiency, inconvenient operation and low measurement precision of the traditional method for measuring the gap at the most unfavorable point of the elevator and the strength of the elevator shaft wall are solved.

Description

Handheld device for measuring gap of elevator door and strength of elevator shaft wall
Technical Field
The invention belongs to the technical field of elevator detection, and particularly relates to a handheld device for measuring the gap of an elevator door and the strength of an elevator shaft wall.
Background
According to the stipulation of TSG T7001-2009 elevator supervision and inspection rule-traction and forced drive elevator, when the elevator door is closed, the gap of the elevator door should meet the following requirements: in the opening direction of the active door leaf of the horizontally moving door and the folding door, the gap of the front strip is allowed to increase by applying 150N manpower at a most unfavorable point, but is not more than 30mm for the side opening door and not more than 45mm for the middle opening door;
the traditional method for measuring the gap of the elevator door is as follows: the door leaf is typically pulled by hand at the bottom of the door leaf with a force of about 150N and the corresponding gap is measured with a straight ruler or tape measure. The dynamometer (such as a spring scale with reading) can also be used for measurement, but in actual operation, the dynamometer is not easy to mount on an elevator door, and at least 2 persons are required to operate together, so that the working efficiency is low, the operation is inconvenient, and the measurement accuracy is low.
At present, there are some specially developed special devices for measuring the gap at the worst point of the elevator door, which have the advantages of advanced technology and high automation degree, but also have the disadvantages of complex equipment, large volume, heavy weight and poor reliability.
According to the provisions of GB7588-2003 "safety Specifications for the manufacture and installation of elevators", the walls of the elevator shaft should have a certain mechanical strength, i.e. a force of 300N, uniformly distributed over 5cm2Should be no more than 15mm in elastic deformation, acting vertically on any point of the wall of the well; for the elevator hoistway wall below the landing sill, the elastic deformation should be no greater than 10 mm.
When measuring the strength of the wall of the elevator shaft, a special measuring tool which can be conveniently used at the using site of the elevator and is specially used for measuring the strength of the wall of the elevator shaft is lacked at present.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned drawbacks of the prior art and providing a hand-held device for measuring the gap between elevator doors and the strength of the walls of an elevator hoistway.
The technical scheme of the invention is as follows: a hand-held device for measuring the gap of an elevator door and the strength of an elevator shaft wall comprises a shell, a pneumatic driving system and an electrical control system, wherein the pneumatic driving system comprises a screw cover, a push plate, a cylinder, a micro booster air pump, a pipeline, an overflow valve and the like, and the electrical control system comprises a battery, a motor of the micro booster air pump, an MCU chip, an AD chip, a linear displacement sensor, a pressure sensor, an electromagnetic valve, a circuit board, an input keyboard, a display screen, a power switch and the like; the shell isInside hollow cuboid structure, casing openly are equipped with display screen, switch and input keyboard, and the casing side is equipped with the rectangular hole, and the rectangular hole below is equipped with the fixed picture peg of being convenient for insert the lift-cabin door clearance, the cylinder be fixed in inside the casing, the plunger of cylinder stretches out the casing and adopts outer terminal surface area to be 5cm through the rectangular hole2The screw cap and the push plate are fixedly connected (except the influence of holes and depressions on the outer end surface of the screw cap on the area of the outer end surface), a linear displacement sensor is arranged in the shell, a measuring rod of the linear displacement sensor extends out of the shell through a rectangular hole and is fixedly connected with the push plate by a screw, and the measuring rod of the linear displacement sensor follows the telescopic action of the cylinder plunger; the shell is also internally provided with a battery, a miniature booster pump, a pipeline, an overflow valve, a circuit board, an MCU chip, an AD chip, a pressure sensor, an electromagnetic valve, a circuit board and the like.
Electric control system constitute by motor, MCU chip, AD chip, linear displacement sensor, pressure sensor, solenoid valve, circuit board, input keyboard, display screen, switch of battery, miniature pressure boost air pump, the battery respectively with motor, pressure sensor, linear displacement sensor, AD chip and MCU chip circuit connection of miniature pressure boost air pump in order to provide the power, wherein AD chip and pressure sensor, linear displacement sensor, MCU chip circuit connection, MCU chip and miniature pressure boost air pump, solenoid valve, input keyboard and display screen circuit connection.
The AD chip can adopt one double-channel AD chip or two single-channel AD chips, analog signals output by the linear displacement sensor and the pressure sensor are respectively converted into digital signals, and the digital signals are provided for the MCU chip for further processing; the input keyboard is used for setting the thrust of the cylinder, and the pressure sensor is used for monitoring the gas pressure in the cylinder; the 'start test' key is positioned in the middle of the input keyboard and is used for starting a test function; the electromagnetic valve is controlled by the MCU chip to discharge gas in the cylinder; the display screen is used for displaying the cylinder thrust value, the gas pressure value in the cylinder, the displacement value of the push plate and prompt information; the circuit board is used for installing electrical elements such as an MCU chip, an AD chip, a resistor, a capacitor and the like, and is connected with circuits of components such as a battery, a display screen, an input keyboard, a sensor, an electromagnetic valve, a motor, a power supply and the like.
A hand-held method of operation for an elevator door gap and elevator hoistway wall strength measurement device, the method of operation comprising the steps of:
the first step, preparation: turning on a power switch, inputting a thrust value of the cylinder by using an input keyboard, receiving the cylinder thrust value input by an operator by using the MCU chip at the moment, converting the cylinder thrust value into a corresponding gas pressure set value, and displaying the set cylinder thrust value and the set gas pressure value on a display screen;
when measuring the gap at the most unfavorable point of the elevator door, inserting the fixed inserting plate and the push plate which are attached together into the gap at the least unfavorable point of the elevator door in a closed state;
when the strength of the wall of the elevator shaft is measured, the outer end face of the screw cap is abutted against the surface of the wall of the shaft to be measured, the outer end face of the screw cap is uniformly contacted with the surface of the wall of the shaft, and the plunger of the cylinder is vertical to the surface of the wall of the shaft to be measured; the housing of the device should be held in a non-moving position (the housing can be held against movement by the elevator car structure).
And step two, starting a test: after a 'start test' key in the middle of an input keyboard is pressed, a motor of the miniature booster air pump starts to work, a pressure sensor monitors the air pressure in an air cylinder, and an analog signal output by the pressure sensor is converted into a digital signal through an AD chip and then is sent to an MCU chip for further processing; when the pressure monitoring value of the gas in the cylinder is not lower than the set pressure value, the MCU chip controls the motor to stop running; when the pressure monitoring value of the gas in the cylinder exceeds the set pressure value, the MCU chip controls the electromagnetic valve to open and release the gas in the cylinder until the pressure of the gas in the cylinder is equal to the set pressure value and then controls the electromagnetic valve to close; when the pressure monitoring value of the gas in the cylinder is lower than the set pressure value, the MCU chip controls the motor to drive the micro booster pump to work; in the test process, the display screen displays the dynamic pressure value of the gas in the cylinder, the thrust value of the cylinder and the displacement value of the push plate;
step three, displaying a test result: when the MCU chip judges that the pressure monitoring value of the gas in the cylinder can be stably equal to the set pressure value, the test is judged to be finished, the display screen prompts that the test is finished, and the measured gas pressure value, the cylinder thrust value and the push plate displacement value are displayed.
The invention has the beneficial effects that: the device has the advantages of small volume, light weight, simple operation, high working efficiency and high measurement precision; the defects of low working efficiency, inconvenient operation and low measurement precision of the traditional method for measuring the clearance at the most unfavorable point of the elevator are solved; the defects of complex equipment, large volume, heavy weight and poor reliability of some conventional special measuring devices are also overcome; it is possible to provide a special measuring tool for strength measurement of a hoistway wall, which can be conveniently used at a practical use site of an elevator.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is an electrical schematic block diagram of the present invention;
FIG. 4 is a diagram of an application scenario for measuring the gap at the worst point of an elevator door according to the present invention;
fig. 5 is a diagram of an application scenario for measuring the strength of the hoistway wall according to the present invention;
wherein: 1. the device comprises a shell, 2, a screw cover, 3, a push plate, 4, a linear displacement sensor, 5, a battery, 6, a micro booster pump, 8, a cylinder, 9, a display screen, 10, a power switch, 11, an input keyboard, 12, a fixed inserting plate, 13, an elevator door, 14 and an elevator shaft wall.
Detailed Description
The embodiment is a handheld device for measuring the gap of an elevator door and the strength of an elevator shaft wall, which consists of a shell (1), a pneumatic driving system and an electric control system. The pneumatic driving system comprises a screw cap (2), a push plate (3), an air cylinder (8), a miniature booster air pump (6), a pipeline, an overflow valve and the like, and the electrical control system comprises a battery (5), a motor of the miniature booster air pump, an MCU chip, an AD chip, a linear displacement sensor (4), a pressure sensor, an electromagnetic valve, a circuit board, an input keyboard (11), a display screen (9), a power switch (10) and the like.
As shown in fig. 1 and 2, the housing (1) is a rectangular parallelepiped structure with a hollow interiorCasing (1) openly is equipped with display screen (9), switch (10) and input keyboard (11), and casing (1) side is equipped with the rectangular hole, rectangular hole below be equipped with fixed picture peg (12) of being convenient for insert the lift-cabin door clearance, cylinder (8) be fixed in inside casing (1), the plunger of cylinder (8) stretches out casing (1) and adopts outer terminal surface area to be 5cm through the rectangular hole2The screw cap (2) is fixedly connected with the push plate (3), a linear displacement sensor (4) is arranged in the shell (1), a measuring rod of the linear displacement sensor (4) extends out of the shell (1) through a rectangular hole and is fixedly connected with the push plate (3) by a screw, and the measuring rod of the linear displacement sensor (4) follows the telescopic action of the plunger of the cylinder (8); the shell (1) is also internally provided with a battery (5), a motor and a micro booster pump (6), and the micro booster pump (6) is connected with the cylinder (8) by an air path.
As shown in fig. 3, the electrical control system comprises battery (5), MCU chip, AD chip, linear displacement sensor (4), pressure sensor, solenoid valve, circuit board, input keyboard (11), display screen (9), switch (10), etc., battery (5) respectively with miniature supercharged air pump, pressure sensor, linear displacement sensor (4), AD chip and MCU chip in order to provide the power, wherein the AD chip is connected with pressure sensor and linear displacement sensor (4), MCU chip, the MCU chip connects motor, solenoid valve, input keyboard (11) and display screen (9) of miniature supercharged air pump respectively.
A hand-held method of operation for an elevator door gap and elevator hoistway wall strength measurement device, the method of operation comprising the steps of:
the first step, preparation: turning on a power switch (10), inputting the thrust value of the air cylinder (8) by using an input keyboard (11), receiving the air cylinder thrust value input by an operator by the MCU chip at the moment, converting the air cylinder thrust value into a corresponding air pressure set value, and displaying the set air cylinder thrust value and the set air pressure value on a display screen (9);
as shown in fig. 4, when the gap size at the worst point of the elevator is measured, the thrust value of the cylinder is set to 150N. Inserting the fixed inserting plate (12) and the push plate (3) which are attached together into a gap at the worst point of the elevator door (13) in a closed state;
as shown in fig. 5, when measuring the wall strength of the elevator shaft, the thrust value of the cylinder (8) is set to 300N. The outer end face of the screw cap (2) is abutted against the surface of the tested elevator shaft wall (14), the outer end face of the screw cap (2) is uniformly contacted with the surface of the elevator shaft wall (14), and a plunger of the cylinder (8) is vertical to the surface of the tested elevator shaft wall (14); the housing (1) of the device is to be held in a non-movable position;
and step two, starting a test: after a 'start test' key in the middle of an input keyboard is pressed, a motor drives a miniature booster pump (6) to start working, a pressure sensor monitors the gas pressure in a cylinder, and an analog signal output by the pressure sensor is converted into a digital signal through an AD chip and then is sent to an MCU chip for further processing; when cylinder (8)
When the pressure monitoring value of the internal gas is not lower than the set pressure value, the MCU chip controls the motor to stop running; when the pressure monitoring value of the gas in the cylinder (8) exceeds a set pressure value, the MCU chip controls the electromagnetic valve to open and close the gas in the relief cylinder (8) until the pressure of the gas in the cylinder (8) is equal to the set pressure value; when the pressure monitoring value of the gas in the cylinder (8) is lower than the set pressure value, the MCU chip controls the motor to drive the micro booster pump to work; in the test process, the display screen (9) displays the dynamic pressure value of the gas in the cylinder (8), the thrust value of the cylinder (8) and the displacement value of the push plate (3);
step three, displaying a test result: when the MCU chip judges that the pressure monitoring value of the gas in the cylinder (8) can be more stably equal to the set pressure value, the test is judged to be finished, the display screen (9) prompts that the test is finished, and the measured gas pressure value, the cylinder thrust value and the push plate displacement value are displayed. The displacement value of the push plate is displayed as the gap size of the elevator door when the elevator door is opened at the most adverse point of the elevator door by 150N of force, or the hoistway wall is uniformly acted on 5cm by 300N of force2The amount of elastic deformation of the well wall in the area of (a).

Claims (5)

1. A hand-held device for measuring the gap of an elevator door and the strength of an elevator shaft wall is characterized by comprising a shell, a pneumatic driving system and an electrical control system, wherein the pneumatic driving system comprises a screw cover, a push plate, a cylinder, a micro pressurizing air pump, a pipeline, an overflow valve and the like; the casing be inside hollow cuboid structure, the casing openly is equipped with display screen, switch and input keyboard, and the casing side is equipped with the rectangular hole, the cylinder be fixed in inside the casing, the plunger of cylinder stretches out the casing and adopts spiral shell lid and push pedal fixed connection through the rectangular hole, be equipped with linear displacement sensor in the casing, this linear displacement sensor's measuring stick stretches out the casing and adopts screw and push pedal fixed connection through the rectangular hole, linear displacement sensor's measuring stick follows up in the flexible action of cylinder plunger, miniature supercharged air pump passes through the pipeline with the cylinder and adopts the gas circuit to be connected.
2. The hand-held device for measuring the gap between the elevator door and the wall of the elevator hoistway as claimed in claim 1, wherein a fixing insertion plate is provided under the rectangular hole to facilitate insertion of the gap between the elevator door.
3. The hand-held device for measuring the gap between elevator doors and the wall strength of elevator shaft as claimed in claim 1, wherein the screw cap for connecting the cylinder plunger and the push plate has an outer end surface area of 5cm2。
4. The hand-held device of claim 1, wherein the electrical control system comprises a battery, an MCU chip, an AD chip, a linear displacement sensor, a pressure sensor, a solenoid valve, a circuit board, an input keyboard, a display screen, a power switch, etc., the battery is respectively in circuit connection with the motor, the pressure sensor, the linear displacement sensor, the AD chip and the MCU chip of the micro-booster air pump to provide power, the AD chip is in circuit connection with the pressure sensor, the linear displacement sensor and the MCU chip, and the MCU chip is in circuit connection with the micro-booster air pump, the solenoid valve, the input keyboard and the display screen.
5. A method of operating a hand-held apparatus for measuring the gap between an elevator door and the wall strength of an elevator hoistway, the method comprising the steps of:
the first step, preparation: turning on a power switch, inputting a cylinder thrust value by using an input keyboard, receiving the cylinder thrust value input by an operator by the MCU chip at the moment, converting the cylinder thrust value into a corresponding gas pressure set value, and displaying the set cylinder thrust value and the set gas pressure value by a display screen;
when measuring the gap at the worst point of the elevator door, setting the thrust value of the air cylinder to be 150N, and inserting the fixed inserting plate and the push plate which are attached together into the gap at the worst point of the elevator door in a closed state;
when the strength of the wall of the elevator shaft is measured, the thrust value of the air cylinder is set to be 300N, the outer end face of the screw cap is abutted against the surface of the wall of the shaft to be measured, the two planes are in uniform contact, and the plunger of the air cylinder is vertical to the surface of the wall of the shaft to be measured; holding the housing of the device in a non-movable position;
and step two, starting a test: after a 'start test' key in the middle of an input keyboard is pressed, the miniature booster air pump starts to work, the pressure sensor monitors the air pressure in the air cylinder, and an analog signal output by the pressure sensor is converted into a digital signal through the AD chip and then is sent to the MCU chip for further processing; when the pressure monitoring value of the gas in the cylinder is not lower than the set pressure value, the MCU chip controls the motor of the miniature booster air pump to stop running; when the pressure monitoring value of the gas in the cylinder exceeds the set pressure value, the MCU chip controls the electromagnetic valve to open and release the gas in the cylinder until the pressure of the gas in the cylinder is equal to the set pressure value and then controls the electromagnetic valve to close; when the pressure monitoring value of the gas in the cylinder is lower than the set pressure value, the MCU chip controls the motor of the miniature booster pump to work; in the test process, the display screen displays the dynamic pressure value of the gas in the cylinder, the thrust value of the cylinder and the displacement value of the push plate;
step three, displaying a test result: when the MCU chip judges that the pressure monitoring value of the gas in the cylinder can be stably equal to the set pressure value, the test is judged to be finished, the display screen prompts that the test is finished, and the measured gas pressure value, the cylinder thrust value and the push plate displacement value are displayed.
CN202010422016.7A 2020-05-11 2020-05-11 Handheld device for measuring gap of elevator door and strength of elevator shaft wall Pending CN113639693A (en)

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Application Number Priority Date Filing Date Title
CN202010422016.7A CN113639693A (en) 2020-05-11 2020-05-11 Handheld device for measuring gap of elevator door and strength of elevator shaft wall

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Application Number Priority Date Filing Date Title
CN202010422016.7A CN113639693A (en) 2020-05-11 2020-05-11 Handheld device for measuring gap of elevator door and strength of elevator shaft wall

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CN113639693A true CN113639693A (en) 2021-11-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114858125A (en) * 2022-05-05 2022-08-05 广州广日电梯工业有限公司 Baseboard testing device and baseboard testing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114858125A (en) * 2022-05-05 2022-08-05 广州广日电梯工业有限公司 Baseboard testing device and baseboard testing method

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