CN109775497B - Elevator weight test device and method - Google Patents

Elevator weight test device and method Download PDF

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Publication number
CN109775497B
CN109775497B CN201910149771.XA CN201910149771A CN109775497B CN 109775497 B CN109775497 B CN 109775497B CN 201910149771 A CN201910149771 A CN 201910149771A CN 109775497 B CN109775497 B CN 109775497B
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test
trolley
water
button
water tank
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CN109775497A (en
Inventor
张军
周前飞
丁树庆
冯月贵
王会方
张慎如
庆光蔚
胡静波
吴祥生
赵凯
王爽
金严
钱程
王建华
宁士翔
韩郡业
冯文龙
任金萍
朱博文
谢池
卢东
宋来军
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NANJING SPECIAL EQUIPMENT INSPECTION INSTITUTE
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NANJING SPECIAL EQUIPMENT INSPECTION INSTITUTE
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies

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  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

The invention discloses an elevator weight test device and method, comprising a controller and two trolleys with the same structure, wherein one trolley is marked as a test trolley, and the other trolley is marked as a control trolley; the trolley is provided with a water tank, a water pump, a weighing sensor and a display screen; the water inlet of the water pump is communicated with the water tank, a flow sensor is arranged at the water outlet of the water pump, the water outlet is communicated with one end of the water pipe, and the other end of the water pipe can be communicated with the water tank of another trolley; the weighing sensor is arranged at the bottom of the water tank; the water pumps, the flow sensors, the weighing sensors and the display screens of the two trolleys are all electrically connected with the controller. And carrying out related weight test by using a controller to remotely control the test trolley. The whole process does not need personnel to enter the car, accidents such as sudden elevator shearing, sliding and the like in the test process are avoided to hurt personnel, automatic and uniform loading can be realized without personnel to carry weights back and forth, the test time is shortened, the labor intensity is reduced, and the efficiency and the safety of weight test are greatly improved.

Description

Elevator weight test device and method
Technical Field
The invention belongs to the technical field of elevators, and particularly relates to an elevator weight test device and method.
Background
According to the regulations and requirements of national laws and regulations, the installation and use of the elevator need to be checked, and the elevator can be put into use after the elevator is checked to be qualified. According to the regulations of elevator supervision test and regular test rules-traction and forced driving elevator (TSG T7001-2009), the test items such as balance coefficient test, speed limiter-safety tongs linkage test, elevator speed test, descending brake working condition traction test, static traction test and brake test all need manual carrying weights to carry out load detection, the labor intensity of personnel is high, the test time is long, especially 125% rated load descending brake test, the manual repeated carrying of weights from outside to inside of an elevator is needed, slow and uniform loading is realized, time and labor are wasted, and because the performance of elevator equipment is not in accordance with the related requirements, traction steel wire rope ends (rope end combination cast by conical sleeves and Babbitt metal) are easily pulled off in the test process, the elevator car and the counterweight fall into a pit, the braking force of the brake is insufficient to cause shearing, the elevator is deformed in the metal structure of the elevator car, and the like, and certain safety risks exist for equipment and test personnel. Secondly, the weight is directly placed in the car in a centralized manner, and damage to the surface of the car is easily caused (such as the decoration surface of the scratch elevator, etc.), so that a user and maintenance personnel have interference emotion to a load test, and the load test is difficult to develop on the elevator in use. On the premise of ensuring that equipment is not damaged and personnel safety, the weight is carried efficiently and rapidly, and related weight tests are completed, so that the method is the biggest problem encountered in the current elevator inspection.
Disclosure of Invention
The invention aims to provide an elevator weight test device and method, which solve the technical problems of potential safety hazards of equipment and personnel, high labor intensity and long test time in the conventional elevator weight test.
The invention adopts the following technical scheme to solve the technical problems:
an elevator weight test device comprises a controller and two trolleys with the same structure, wherein one trolley is marked as a test trolley, and the other trolley is marked as a control trolley;
the trolley is provided with a water tank, a water pump, a weighing sensor and a display screen; the water inlet of the water pump is communicated with the water tank, the water outlet of the water pump is provided with a flow sensor, the water outlet is communicated with one end of a water pipe, and the other end of the water pipe can be detachably communicated with the water tank of another trolley; the weighing sensor is arranged at the bottom of the water tank; the water pumps, the flow sensors, the weighing sensors and the display screens of the two trolleys are all electrically connected with the controller.
The total weight of rated load capacity, loading coefficient, test trolley and test water tank is input through the keyboard on the controller, the volume of required water is calculated automatically, water is injected into the test trolley water tank from the control trolley water tank through the water pump, the water outlet of the water pump is provided with a flow sensor, and after the volume of required water is injected, the controller controls the water pump to stop water injection. The controller is used for remotely controlling the test trolley to enter the elevator car to carry out a related weight test, and the controller is used for remotely controlling the trolley to exit the elevator after the test is finished.
The manual frequent weight carrying is replaced by the rapid water injection of the water tank, so that the test time can be shortened, the labor intensity is reduced, and the test efficiency is greatly improved. The weight is carried from outside the elevator for 5 seconds to the elevator car for 1250kg, 50 times for 250 seconds in total, 250 seconds for carrying the weight out of the elevator after the test is finished, 500 seconds in total, the water is filled into the water tank by the water pump to be loaded much faster, the flow is converted into 27.8L/s by using a 5W lift 5m flow 100000L/H submersible axial flow pump of the Japanese Fujingshi, the time required for carrying 1250kg of weight is 45 seconds, 5 seconds for carrying the weight out of the car by using a wireless remote control trolley after the test is finished, 50 seconds in total, the time is saved by 450 seconds, and the test efficiency is improved by nearly 9 times. In actual operation, the dead weight of the test water tank and the trolley is 250kg, which is equivalent to 250L of water, the water volume required to be injected is 1250-250=1000L, the time required to fill the test water tank with water is reduced to 36s, and the efficiency is further improved.
According to the method, the controller is used for remotely controlling the test trolley to enter the elevator car to carry out related weight tests, after the tests are finished, the controller is used for remotely controlling the test trolley to exit the elevator, compared with the traditional manual carrying weights, personnel are not required to enter the elevator car in the whole process, accidents such as sudden shearing, sliding and the like of the elevator in the test process are avoided, automatic uniform loading can be achieved without carrying the weights back and forth, the plastic crawler is used for avoiding direct contact friction between the weights and the elevator car, stability is good, influences of vibration, impact and the like in the test process can be prevented, the water tank slides off and overturns from the trolley to cause damage to the bottom layer of the elevator car, and the efficiency and safety of weight tests are greatly improved.
Further improved, the water tank is made of transparent materials, and scale marks, such as 10kg,20kg and 30kg … …, are marked on the water tank. The water tank is 700mm in size and 1200mm in size and can accommodate 1m 3 The weight of water and the weight of the trolley are 1250kg-1300kg, and the weight-limiting device is suitable for common elevator weight tests with rated load weights of 800kg (10 persons) and 1000kg (13 persons).
Further improved, the trolley is provided with a motor, a plastic crawler belt is sleeved on a roller of the trolley, the motor is electrically connected with the controller, and the controller is used for starting the motor to drive the crawler belt to move so as to drive the trolley to move. The self weight of the trolley is 250kg-300kg, the loading capacity is 1500kg-2000kg, the size is designed based on the condition that the trolley can enter an elevator car, and the motor is powered by a UPS (uninterrupted Power supply) on the crawler chassis frame.
Further improved, the water stopping component is arranged on the water tank and is communicated with the water tank, the water stopping component comprises a connecting pipe, the connecting pipe is communicated with the water tank and is fixed on an upper cover plate of the water tank, the end of the connecting pipe, which is positioned outside the water tank, is in a boss shape, a sealing ring is sleeved on the boss, a sealing cover is hinged on the connecting pipe, and a spring is arranged between the connecting pipe and the sealing cover. When water is injected, the sealing cover is opened, and the other end of the water outlet of the water pump on the control trolley, which is connected with the water pipe, is inserted into the connecting pipe of the water inlet of the test trolley. After water injection is finished, the other end of the water pipe connected with the water outlet of the water pump on the control trolley is separated from the end head of the water inlet connecting pipe on the test trolley, and the sealing cover is covered on the boss under the action of the restoring force of the spring, so that the water tank is ensured not to leak water in the test process due to the sealing ring. The water outlet of the test water tank water pump is connected with a water pipe, is placed on a clamping groove of a test water tank cover through the water outlet of the test water tank, and is provided with sealing threads at the tail end, and the water pipe cover is screwed up to prevent water leakage.
The controller is further improved, a control panel is arranged on the controller, a plurality of buttons and a display screen which are electrically connected with the controller are arranged on the control panel, and the buttons are respectively a forward movement button, a backward movement button, a leftward movement button, a rightward movement button, a pause/operation button, a remote controller on/off button, two trolley independent control mode buttons, two trolley unified control mode buttons, a rated load capacity input button, a loading coefficient input button, a trolley and water tank total weight input button, a water injection volume input button, a flow sensor reading input button, a water pump automatic control button, a water pump manual control button, a water pump start button, a water pump stop button and a digital keyboard button;
the button display screen is respectively a rated load capacity LCD (liquid Crystal display) screen, a loading coefficient LCD (liquid Crystal display) screen, a total weight LCD (liquid Crystal display) screen of the test trolley and the test water tank, a required water adding volume LCD (liquid Crystal display) screen and a water pump flow sensor reading LCD (liquid Crystal display) screen;
the device comprises a trolley, a water pump automatic control button, a water pump manual control button, a water pump starting button and a water pump stopping button, wherein the trolley comprises a forward movement button, a backward movement button, a leftward movement button, a rightward movement button and a pause/operation button, and the water pump automatic control button, the water pump manual control button, the water pump starting button and the water pump stopping button are respectively arranged in two, namely a button corresponding to a test trolley and a button corresponding to a control trolley;
the default cart is set by the controller to the individual control mode. When the unified control mode button of the two trolleys is pressed, other control buttons of the trolleys are pressed, and then the movement instruction can be sent to the two trolleys at the same time.
Further improved, the weighing sensor adopts SWB505MultiMount TM The pressure type weighing module is used for weighing 5kg to 4.4t at maximum, four weighing modules are arranged at the bottom of the water tank, the four weighing modules are respectively arranged on four corners of the bottom surface of the water tank, and the lower support of the weighing module is fixedly connected with the bearing surface of the trolley through bolts; the upper bearing surface of the weighing module is contacted with the bottom surface of the water tank, and is fixedly connected with the upper bearing surface of the weighing module through the fixed lug plates at the four corners of the water tank.
Further improved, the said controller includes embedded DSP processor, clock circuit, reset circuit, drive circuit of the relay, button, digital keyboard circuit and LCD display circuit;
the model of the driving chip is ULN2003, the model of the LCD is LCD1602, and the driving chip is a character type LCD; the chip model of the DSP processor is TMS320F28335;
the clock circuit of the DSP processor adopts an external crystal oscillator to generate a 150MHz standard clock, the clock circuit is connected with a clock input pin XCLKIN of the DSP processor, and the reset circuit generates a pulse signal through a reset switch and is connected with a reset pin XRS of the DSP processor;
the signal input/output pin GPIO0 of the DSP processor is connected with the IN port of the driving chip ULN2003 through a photoelectric coupler, when the GPIO0 outputs a high level, a phototriode IN the photoelectric coupler is conducted, the IN port of the ULN2003 receives the high level, the OUT port corresponding to the high level is low level, and the relay is attracted to control the water pump to start working; conversely, when the GPIO0 outputs a low level, the relay is disconnected, and the water pump is controlled to stop working;
meanwhile, a ULN2003COM pin is connected to the VCC end of the relay, a reverse diode in the ULN2003 is used as a protection relay, induced voltage generated when the relay is closed is eliminated, and a water pump with higher power can be controlled to work;
the signal input/output pins GPIO 1-GPIO 4 of the DSP processor are respectively connected with the forward movement button, the backward movement button, the leftward movement button and the rightward movement button of the control trolley, the signal input/output pins GPIO5 of the DSP processor are respectively connected with the pause/operation button of the control trolley, the signal input/output pins GPIO 6-GPIO 9 of the DSP processor are respectively connected with the forward movement button, the backward movement button, the leftward movement button and the rightward movement button of the test trolley, the signal input/output pins GPIO10 of the DSP processor are respectively connected with the pause/operation button of the test trolley, the signal input/output pins GPIO11 and GPIO12 of the DSP processor are respectively connected with the single control mode button of the two trolleys and the unified control mode button of the two trolleys, the signal input/output pins GPIO 13-GPIO 17 of the DSP processor are respectively connected with the rated load capacity input button, the loading coefficient input button, the trolley and the total weight input button of a water tank, the volume input button and the flow sensor reading input button, the signal input pins GPIO10 of the DSP processor are respectively connected with the rated load capacity input button, the signal input pins GPIO 18-GPIO 1602D and the LCD input ends of the liquid crystal display screen 1602-10-1602D and the flow sensor input/input ends of the DSP processor are respectively connected with the rated load capacity input button and GPIO 21-2; the signal input/output pins GPIO 29-GPIO 39 of the DSP processor are connected with the pins RS, RW, E and D0-D7 of the loading coefficient LCD liquid crystal display, the signal input/output pins GPIO 40-GPIO 50 of the DSP processor are connected with the pins RS, RW, E and D0-D7 of the LCD liquid crystal display of the total weight of the test trolley and the test water tank, the signal input/output pins GPIO 51-GPIO 61 of the DSP processor are connected with the pins RS, RW, E and D0-D7 of the required water adding volume LCD liquid crystal display, and the signal input/output pins GPIO 62-GPIO 72 of the DSP processor are connected with the pins RS, RW, E and D0-D7 of the water pump flow sensor reading LCD liquid crystal display;
the flow sensor model is a race Cheng Er pulse signal output water flow sensor SEN-HZ21WA, and the acquired signals are sent to a multichannel buffer serial interface (McBSP) of the DSP processor through an A/D conversion chip ADS 8345;
the signal input/output pin GPIO 73-GPIO 79 of the DSP processor is respectively connected with the row and column input ends of the digital keyboard (0-9, & AC,4 rows and 3 columns), the signal input/output pin GPIO80 of the DSP processor is connected with an automatic control button of the test water tank water pump, the signal input/output pin GPIO81 of the DSP processor is connected with a manual control button of the test water tank water pump, the signal input/output pin GPIO82 of the DSP processor is connected with a start button of the test water tank water pump, the signal input/output pin GPIO83 of the DSP processor is connected with a stop button of the test water tank water pump, the signal input/output pin GPIO84 of the DSP processor is connected with an automatic control button of the control water tank water pump, the signal input/output pin GPIO85 of the DSP processor is connected with a start button of the control water tank water pump, and the signal input/output pin GPIO87 of the DSP processor is connected with a stop button of the control water tank water pump.
The method for testing the elevator based on the elevator weight test device comprises the following steps:
pushing a test trolley into a car of an elevator to be detected by pressing a corresponding button on a control panel of a controller, and placing the control trolley outside the car; wherein the water tank of the test trolley is not filled with water, and the water tank of the test trolley is controlled to be filled with water;
step two, respectively inputting rated load capacity m of the test trolley through corresponding buttons on a control panel of the controller 1 Loading coefficient p, water tank and self weight m of test trolley 2 The controller calculates the volume V of water to be injected into the water tank of the test trolley according to the following formula,
p*m 1 ＝m 2 +ρ*V (1)
V＝(p*m 1 -m 2 )/ρ (2)
wherein ρ is the density of water; inputting the calculated V value through a volume input button of the water injection; rated load capacity m of test trolley 1 Loading coefficient p, water tank and self weight m of test trolley 2 The volume V of water to be injected into the water tank of the test trolley is respectively displayed on a corresponding display screen;
thirdly, the other end of a water pipe connected with a water outlet of a water pump on the control trolley is communicated with a water tank on the test trolley, the water pump on the control trolley starts to work by pressing a start button of the water pump on a control panel of the controller, water in the water tank on the control trolley is injected into the water tank on the test trolley, a water outlet of the water pump is provided with a flow sensor, after the required water injection volume V is reached, the controller controls the water pump to stop water injection, and the other end of the water pipe connected with the water outlet of the water pump on the control trolley is separated from the water tank on the test trolley;
step four, using the dead weight m of the test trolley and the water tank 2 And the weight of injected water replaces the weight, and the elevator is subjected to a balance coefficient test, a speed limiter-safety tongs linkage testElevator speed test, downlink braking condition traction check, static traction check and braking test;
and fifthly, after the test is finished, the controller controls the test trolley to withdraw from the elevator.
In the fourth step, the loading coefficient p is 30%,40%,50% and 60%, namely, the rated load capacity of 30%,40%,50% and 60% is used for carrying out a balance coefficient test and an elevator speed test on the elevator in sequence, and then 125% of rated load capacity is loaded for carrying out a speed limiter-safety tongs linkage test, a downlink braking working condition traction test, a static traction test and a braking test.
In the fifth step, after the test of the elevator in the present part is finished, the water tank of the test trolley is filled with water, and no water is left in the water tank of the test trolley; when the next elevator is correspondingly tested, the test trolley and the control trolley are exchanged, the control trolley is used as the test trolley, the weight test of the next elevator is directly carried out, the time can be further saved, and the test efficiency is improved.
Compared with the prior art, the invention has the following beneficial effects:
1) The weight is frequently carried through replacing the manual work to the quick water injection of water tank, can shorten test time, reduce intensity of labour, improve test efficiency by a wide margin: the weight is carried from outside the elevator for 5 seconds to the elevator car for 1250kg, 50 times for 250 seconds in total, 250 seconds for carrying the weight out of the elevator after the test is finished, 500 seconds in total, the water is filled into the water tank by the water pump to be loaded much faster, the flow is converted into 27.8L/s by using a 5W lift 5m flow 100000L/H submersible axial flow pump of the Japanese Fujingshi, the time required for carrying 1250kg of weight is 45 seconds, 5 seconds for carrying the weight out of the car by using a wireless remote control trolley after the test is finished, 50 seconds in total, the time is saved by 450 seconds, and the test efficiency is improved by nearly 9 times. In actual operation, the dead weight of the test water tank and the trolley is 250kg, which is equivalent to 250L of water, the water volume required to be injected is 1250-250=1000L, the time required to fill the test water tank is reduced to 36s, and the efficiency is further improved.
2) According to the method, the controller is used for remotely controlling the test trolley to enter the elevator car to carry out related weight tests, after the tests are finished, the controller is used for remotely controlling the test trolley to exit the elevator, compared with the traditional manual weight carrying method, personnel are not required to enter the elevator car in the whole process, accidents such as sudden shearing, sliding and the like of the elevator in the test process are avoided, automatic uniform loading can be achieved without personnel carrying the weights back and forth, the weight is prevented from being in direct contact with the elevator car and friction is avoided by adopting the plastic crawler, the stability is good, the influence of vibration, impact and the like in the test process can be prevented, the water tank slides down and overturns from the trolley, damage is caused to the bottom layer of the elevator car, and the efficiency and safety of the weight test are greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a structural plan view of the dolly.
Fig. 3 is a schematic structural view of a water stopping assembly for a water inlet (outlet) of a water tank.
Fig. 4 is a control panel diagram of the controller.
Fig. 5 is a schematic diagram of a controller system.
Fig. 6 is a relay driving circuit diagram of the controller.
Fig. 7 is a circuit diagram of a numeric keypad of the controller.
Fig. 8 is a circuit diagram of an LCD display of the controller.
Detailed Description
In order to make the objects and technical solutions of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in connection with the embodiments of the present invention.
As shown in fig. 1 to 8, an elevator weight test device comprises a test trolley 1, a control trolley 2, a water storage tank 3 of the control trolley, a water tank 4 of the test trolley (simply referred to as a test water tank), a water pump 5, a weighing sensor 6, a display screen 7 and a controller 8.
The trolley is driven by a motor and a plastic crawler belt, and is provided with a weighing sensor 6, so that the weight of the whole trolley is displayed on a display screen 7 near the handrail of the trolley. The total weight of rated load capacity, loading coefficient, test trolley and test water tank is input through the keyboard on the controller 8, the required water adding volume is automatically calculated, water is injected into the test water tank 4 from the water storage tank 3 of the control trolley through the water pump 5, the water outlet of the water pump is provided with a flow sensor, and after the required water adding volume is injected, the controller 8 controls the water pump to stop water injection. The controller 8 is used for remotely controlling the test trolley to enter the elevator car to carry out a related weight test, and the test trolley is remotely controlled to exit the elevator after the test is finished.
In the present embodiment, the load capacity m is input through the keyboard of the controller 8 1 Loading coefficient p, water tank and self weight m of test trolley 2 The controller calculates the volume V of water to be injected into the water tank of the test trolley according to the following formula,
p*m 1 ＝m 2 +ρ*V (1)
V＝(p*m 1 -m 2 )/ρ (2)
wherein ρ is the density of water, and the calculated V value is inputted through the volume input button of the water injection; rated load capacity m of test trolley 1 Loading coefficient p, water tank and self weight m of test trolley 2 And the volume V of water to be injected into the water tank of the test trolley is respectively displayed on the corresponding display screen.
In this embodiment, weight tests such as a balance coefficient test, a speed limiter-safety tongs linkage test, an elevator speed test, a downward braking condition traction check, a static traction check, and a braking test are performed in order of small-to-large loading coefficients: firstly, 30%,40%,50% and 60% rated load capacity is loaded for a balance coefficient test and an elevator speed test, and then 125% rated load capacity is loaded for a speed limiter-safety tongs linkage test, a downlink braking condition traction test, a static traction test and a braking test.
In this embodiment, test dolly and control dolly are symmetrical structure, and test water tank and storage water tank bottom all set up a water pump, follow the storage water tank earlier and press 30%,40%,50%,60%,125% water injection to test water tank, after the test water tank is full of water, next test regard storage water tank as test water tank, and the water injection of conversely, regard control dolly as test dolly, directly carry out the weight test of next elevator, can further save time, improve test efficiency.
In this embodiment, the water pump 5 is a submersible axial flow pump with a flow of 100000L/H of 800W lift and 5m of the jetstreasures in japan, the pipe diameter of the water outlet is 110mm, a UPS power supply is used to supply power to the water pump, and the UPS power supply is disposed on the crawler chassis frame.
In this embodiment, the water pump 5 is used to fill water from the water tank 3 to the test water tank 4, and fill water from the test water tank 4 to the water tank 3 in the next test, the water pump outlet at the bottom of the water tank is connected with a water pipe, and the water pipe passes through the water outlet of the water tank, enters the water inlet of the test water tank, and extends to the bottom of the test water tank; the water outlet of the test water tank water pump is connected with a water pipe, is placed on the clamping groove 18 of the test water tank cover through the water outlet of the test water tank, and the tail end of the water pipe is provided with a sealing thread, and the water pipe cover is screwed up to prevent water leakage.
In this embodiment, the test water tank and the water storage tank are made of high-strength transparent plastic, the height of the water surface in the tank can be seen from the outside, and weight identification lines (such as 10kg,20kg,30kg and … …) are arranged on the outside.
In this embodiment, as shown in fig. 3, a water stopping component is disposed on the water tank and at the connection port at the other end of the water pipe, the water stopping component includes a connection pipe, the connection pipe is communicated with the water tank and is fixed on an upper cover plate of the water tank, the end of the connection pipe outside the water tank is in a boss shape 22, a sealing ring is sleeved on the boss, a sealing cover 19 is hinged on the connection pipe, and a spring 20 and a telescopic rod 21 are disposed between the connection pipe and the sealing cover. When water is injected, the sealing cover is opened, the telescopic rod 21 plays a supporting role on the sealing cover 19, and then the other end of the water outlet of the water pump on the control trolley, which is connected with the water pipe, is inserted into the connecting pipe of the water inlet of the test trolley. After water injection is finished, the other end of the water pipe connected with the water outlet of the water pump on the control trolley is separated from the end head of the water inlet connecting pipe on the test trolley, and the sealing cover is covered on the boss under the action of the restoring force of the spring, so that the water tank is ensured not to leak water in the test process due to the sealing ring. The water outlet of the test water tank water pump is connected with a water pipe, is placed on a clamping groove of a test water tank cover through the water outlet of the test water tank, and is provided with sealing threads at the tail end, and the water pipe cover is screwed up to prevent water leakage. In the embodiment, the trolley is driven by a motor and a plastic crawler belt, the self weight of the trolley is 250kg-300kg, the loading capacity of the trolley is 1500kg-2000kg, the trolley is designed based on the condition that the trolley can enter an elevator car, and the motor is powered by a UPS (uninterrupted power supply) on a crawler chassis frame.
In this embodiment, the water tank is designed to have a size of 700mm 1200mm and can hold 1m3 of water, and the weight of the trolley is 1250kg-1300kg, so that the water tank is suitable for common elevator weight tests with rated load weights of 800kg (10 persons) and 1000kg (13 persons).
In this embodiment, the load cell employs SWB505MultiMount TM The press type weighing module is used for weighing 5kg-4.4t to the maximum, 4 weighing modules are arranged on 4 corners of the bottom surface of the water tank, the lower support of the module is fixedly connected with the bearing surface of the trolley through bolts, the upper bearing surface of the module is contacted with the bottom surfaces of the four corners of the water tank, the fixed lugs at the four corners of the water tank are fixedly connected with the upper bearing surface of the module, after the weighing module is used for weighing the weight of the water tank, the self weight of the trolley is added, and the weight of the whole trolley is displayed on the LED display screen near the handrail of the trolley.
In this embodiment, as shown in fig. 4, the controller panel includes: 23 24, 25, 26 are respectively a forward movement button, a backward movement button, a leftward movement button and a rightward movement button of the control trolley, 27 is a pause/run button of the control trolley, 28, 29, 30, 31 is respectively a forward movement button, a backward movement button, a leftward movement button and a rightward movement button of the test trolley, 32 is a pause/run button of the test trolley, 33 is a remote controller on/off button, 34 is a two-trolley independent control mode button, the system defaults to an independent control mode, 35 is a two-trolley unified control mode button, and a certain movement button of the control trolley or the test trolley is pressed in the mode, and meanwhile, a movement instruction is sent to the two trolleys.
36 is rated load capacity input button, 37 is loading coefficient input button, 38 is total weight input button of test trolley and test water tank, 39 is required water volume input button, 40 is water pump flow sensor reading input button, 41 is rated load capacity LCD (unit is kg), 42 is loading coefficient LCD (unit is%), 43 is total weight LCD (unit is kg) of test trolley and test water tank, 44 is required water volume LCD (unit is L), 45 is water pump flow sensor reading LCD (unit is L).
46 is an automatic control button of the test water tank water pump, 47 is a manual control button of the test water tank water pump, 48 is a start button of the test water tank water pump, 49 is a stop button of the test water tank water pump, 50 is an automatic control button of the control water tank water pump, 51 is a manual control button of the control water tank water pump, 52 is a start button of the control water tank water pump, and 53 is a stop button of the control water tank water pump.
In this embodiment, as shown in fig. 5, the controller includes an embedded DSP processor, a clock circuit, a reset circuit, a relay driving circuit, a button and keypad circuit, and an LCD display circuit, where the driving chip is ULN2003, the LCD liquid crystal display is LCD1602, and the number of the LCD liquid crystal display is 2, and each row can display 16 characters.
In this embodiment, the chip model of the DSP processor is TMS320F28335, the clock circuit generates a 150MHz standard clock by using an external crystal oscillator, and is connected to the clock input pin XCLKIN of the DSP processor, and the reset circuit generates a pulse signal through a reset switch, and is connected to the reset pin XRS of the DSP processor; as shown IN fig. 6, the relay driving circuit is shown IN fig. 6, the signal input/output pin GPIO0 of the DSP processor is connected with the IN port of the driving chip ULN2003 through the optocoupler, when the GPIO0 outputs a high level, the phototransistor IN the optocoupler is turned on, the IN port of ULN2003 receives the high level, the OUT port corresponding to the high level is a low level, and the relay is attracted to control the water pump to start working; and on the contrary, when the singlechip outputs a low level, the relay is disconnected, and the water pump is controlled to stop working. Meanwhile, the ULN2003COM pin is connected to the VCC end of the relay, a reverse diode in the ULN2003 is used as a protection relay, induced voltage generated when the relay is closed is eliminated, and a water pump with larger power can be controlled to work.
In this embodiment, signal input/output pins GPIO1 to GPIO4 of the DSP processor are respectively connected with front, rear, left and right movement buttons of the control cart, GPIO5 is connected with pause/operation buttons of the control cart, GPIO6 to GPIO9 are respectively connected with front, rear, left and right movement buttons of the test cart, GPIO10 is connected with pause/operation buttons of the test cart, GPIO11 and GPIO12 are respectively connected with independent and unified control mode buttons of the two carts, GPIO13 to GPIO17 are respectively connected with input buttons of rated load capacity, loading coefficient, total weight of the test cart and test water tank, required water adding volume and water pump flow sensor reading, GPIO18 to GPIO20 are respectively connected with RS, RW and E pins of the LCD1602 liquid crystal display screen of the rated load capacity, and GPIO21 to GPIO28 are respectively connected with data ends D0 to D7 of the LCD1602, as shown in fig. 7; the GPIO 29-GPIO 39 is connected with the RS, RW, E and D0-D7 pins of the LCD liquid crystal display screen with the loading coefficient, the GPIO 40-GPIO 50 is connected with the RS, RW, E and D0-D7 pins of the LCD liquid crystal display screen with the total weight of the test trolley and the test water tank, the GPIO 51-GPIO 61 is connected with the RS, RW, E and D0-D7 pins of the LCD liquid crystal display screen with the water adding volume required by the test trolley, the GPIO 62-GPIO 72 water pump flow sensor is connected with the RS, RW, E and D0-D7 pins of the LCD liquid crystal display screen, the water pump flow sensor is of the type of the water pump flow sensor Cheng Er, the water flow sensor SEN-HZ21WA is output by pulse signals, the collected signals are connected to a multichannel buffer serial interface (McBSP) of the DSP processor through an A/D conversion chip ADS8345, and the GPIO 73-GPIO 79 is respectively connected with the row and column input ends of the LCD liquid crystal display screen with digital keyboards (0-9, AC,4 rows and 3 columns) as shown in figure 7. GPIO80 is connected with the automatic control button of test water tank water pump, GPIO81 is connected with the manual control button of test water tank water pump, GPIO82 is connected with the start button of test water tank water pump, GPIO83 is connected with the stop button of test water tank water pump, GPIO84 is connected with the automatic control button of control water tank water pump, GPIO85 is connected with the manual control button of control water tank water pump, GPIO86 is connected with the start button of control water tank water pump, GPIO87 is connected with the stop button of control water tank water pump.
In other embodiments, the water pump may be mounted outside the water tanks, for example in the front of the trolley, connected to both tanks by means of a water inlet pipe and a water outlet pipe.
In other embodiments, the test water tank can adopt a high-strength plastic water bag, and is placed in a counterweight space formed by the matching of the four side plates of the test trolley with the bearing surface, so that the water bag can be stored neatly and can not be dispersed everywhere, and the water bag can be compressed to reduce the volume during transportation, thereby facilitating transportation.
The present invention is not specifically described in the prior art or may be implemented by the prior art, and the specific embodiments described in the present invention are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Equivalent changes and modifications of the invention are intended to be within the scope of the present invention.

Claims (7)

1. The elevator weight test device is characterized by comprising a controller and two trolleys with the same structure, wherein one trolley is marked as a test trolley, and the other trolley is marked as a control trolley;
the trolley is provided with a water tank, a water pump, a weighing sensor and a display screen; the water inlet of the water pump is communicated with the water tank, the water outlet of the water pump is provided with a flow sensor, the water outlet is communicated with one end of a water pipe, and the other end of the water pipe can be detachably communicated with the water tank of another trolley; the weighing sensor is arranged at the bottom of the water tank; the water pumps, the flow sensors, the weighing sensors and the display screens of the two trolleys are all electrically connected with the controller;
the water stopping assembly comprises a connecting pipe, the connecting pipe is communicated with the water tank and is fixed on an upper cover plate of the water tank, the end of the connecting port, which is positioned outside the water tank, is in a boss shape, a sealing ring is sleeved on the boss, a sealing cover is hinged on the connecting pipe, and a spring is arranged between the connecting pipe and the sealing cover;
the controller is provided with a control panel, the control panel is provided with a plurality of buttons and a display screen which are electrically connected with the controller, and the buttons are respectively a forward movement button, a backward movement button, a leftward movement button, a rightward movement button, a pause/operation button, a remote controller on/off button, two trolley independent control mode buttons, two trolley unified control mode buttons, a rated load capacity input button, a loading coefficient input button, a trolley and water tank total weight input button, a water injection volume input button, a flow sensor reading input button, a water pump automatic control button, a water pump manual control button, a water pump start button, a water pump stop button and a digital keyboard button;
the button display screen is respectively a rated load capacity LCD (liquid Crystal display) screen, a loading coefficient LCD (liquid Crystal display) screen, a total weight LCD (liquid Crystal display) screen of the test trolley and the test water tank, a required water adding volume LCD (liquid Crystal display) screen and a water pump flow sensor reading LCD (liquid Crystal display) screen;
the device comprises a trolley, a water pump automatic control button, a water pump manual control button, a water pump starting button and a water pump stopping button, wherein the trolley comprises a forward movement button, a backward movement button, a leftward movement button, a rightward movement button and a pause/operation button, and the water pump automatic control button, the water pump manual control button, the water pump starting button and the water pump stopping button are respectively arranged in two, namely a button corresponding to a test trolley and a button corresponding to a control trolley;
setting a default trolley to be in an independent control mode through a controller;
the elevator weight test device comprises the following steps:
pushing a test trolley into a car of an elevator to be detected by pressing a corresponding button on a control panel of a controller, and placing the control trolley outside the car; wherein the water tank of the test trolley is not filled with water, and the water tank of the test trolley is controlled to be filled with water;
step two, respectively inputting rated load capacity of the test trolley through corresponding buttons on a control panel of the controllerm 1 Loading coefficientpSelf weight of water tank and test trolleym 2 The controller calculates the volume of water to be injected into the water tank of the test trolley according to the following formulaV，
p* m 1 =m 2 +ρ*V （1）
V=（p* m 1 - m 2 ）/ρ （2）
Wherein ρ is the density of water; the calculated volume of water is input through the volume input buttonVA value; rated load capacity of test trolleym 1 Loading coefficientpSelf weight of water tank and test trolleym 2 And the volume of water to be injected into the tank of the test cartVRespectively displaying the images on corresponding display screens;
thirdly, the other end of the water pipe connected with the water outlet of the water pump on the control trolley is communicated with a water tank on the test trolley, the water pump on the control trolley starts to work by pressing a start button of the water pump on a control panel of the controller, water in the water tank on the control trolley is injected into the water tank on the test trolley, a flow sensor is arranged at the water outlet of the water pump, and when the volume of required water injection is reachedVThen, the controller controls the water pump to stop water injection, and the other end of the water pipe connected with the water outlet of the water pump on the small test trolley is separated from the water tank on the small test trolley;
step four, using the dead weight of the test trolley and the water tankm 2 And the weight of the injected water replaces the weight, and a balance coefficient test, a speed limiter-safety tongs linkage test, an elevator speed test, a traction check of a downlink braking condition, a static traction check and a braking test are carried out on the elevator;
and fifthly, after the test is finished, the controller controls the test trolley to withdraw from the elevator.
2. The weight test device for an elevator according to claim 1, wherein the water tank is made of transparent material, and graduation marks are marked on the water tank.
3. The weight test device for the elevator according to claim 1 or 2, wherein a motor is arranged on the trolley, a plastic crawler belt is sleeved on a roller of the trolley, the motor is electrically connected with the controller, and the motor is started by the controller to drive the crawler belt to move so as to drive the trolley to move.
4. The elevator weight test device according to claim 3, wherein the weighing sensor adopts an SWB505 multi-mount ™ pressure type weighing module, the maximum weighing is 5kg-4.4t, four weighing modules are arranged at the bottom of the water tank, the four weighing modules are respectively arranged at four corners of the bottom surface of the water tank, and a lower bracket of the weighing module is fixedly connected with a trolley bearing surface through bolts; the upper bearing surface of the weighing module is contacted with the bottom surface of the water tank, and is fixedly connected with the upper bearing surface of the weighing module through the fixed lug plates at the four corners of the water tank.
5. The weight test device of claim 4, wherein the controller comprises an embedded DSP processor, a clock circuit, a reset circuit, a relay driver circuit, a button and keypad circuit, and an LCD display circuit;
the model of the driving chip is ULN2003, the model of the LCD is LCD1602, and the driving chip is a character type LCD; the chip model of the DSP processor is TMS320F28335;
the clock circuit of the DSP processor adopts an external crystal oscillator to generate a 150MHz standard clock, the clock circuit is connected with a clock input pin XCLKIN of the DSP processor, and the reset circuit generates a pulse signal through a reset switch and is connected with a reset pin XRS of the DSP processor;
the signal input/output pin GPIO0 of the DSP processor is connected with the IN port of the driving chip ULN2003 through a photoelectric coupler, when the GPIO0 outputs a high level, a phototriode IN the photoelectric coupler is conducted, the IN port of the ULN2003 receives the high level, the OUT port corresponding to the high level is low level, and the relay is attracted to control the water pump to start working; conversely, when the GPIO0 outputs a low level, the relay is disconnected, and the water pump is controlled to stop working;
meanwhile, a ULN2003COM pin is connected to the VCC end of the relay, a reverse diode in the ULN2003 is used as a protection relay, induced voltage generated when the relay is closed is eliminated, and a water pump with higher power can be controlled to work;
the signal input/output pins GPIO 1-GPIO 4 of the DSP processor are respectively connected with the forward movement button, the backward movement button, the leftward movement button and the rightward movement button of the control trolley, the signal input/output pin GPIO5 of the DSP processor is connected with the pause/operation button of the control trolley, the signal input/output pins GPIO 6-GPIO 9 of the DSP processor are respectively connected with the forward movement button, the backward movement button, the leftward movement button and the rightward movement button of the test trolley, the signal input/output pin GPIO10 of the DSP processor is connected with the pause/operation button of the test trolley, the signal input/output pins GPIO11 and GPIO12 of the DSP processor are respectively connected with the independent control mode buttons of the two carts and the unified control mode buttons of the two carts, the signal input/output pins GPIO 13-GPIO 17 of the DSP processor are respectively connected with the rated load capacity input button, the loading coefficient input button, the total weight input button of the carts and the water tank, the volume input button of water injection and the flow sensor reading input button, the signal input/output pins GPIO 18-GPIO 20 of the DSP processor are respectively connected with the RS, RW and E pins of the liquid crystal display screen of the rated load capacity LCD1602, and the signal input/output pins GPIO 21-GPIO 28 of the DSP processor are respectively connected with the data ends D0-D7 of the LCD 1602; the signal input/output pins GPIO 29-GPIO 39 of the DSP processor are connected with the RS, RW, E and D0-D7 pins of the loading coefficient LCD liquid crystal display, the signal input/output pins GPIO 40-GPIO 50 of the DSP processor are connected with the RS, RW, E and D0-D7 pins of the LCD liquid crystal display of the total weight of the test trolley and the test water tank, the signal input/output pins GPIO 51-GPIO 61 of the DSP processor are connected with the RS, RW, E and D0-D7 pins of the required water adding LCD liquid crystal display, and the signal input/output pins GPIO 62-D72 of the DSP processor are connected with the RS, RW, E and D0-D7 pins of the water adding LCD liquid crystal display; the signals collected by the flow sensor are sent to a multichannel buffer serial interface (McBSP) of the DSP processor through an A/D conversion chip ADS 8345;
the signal input/output pin GPIO 73-GPIO 79 of the DSP processor is respectively connected with the row and column input ends of the digital keyboard (0-9, & AC,4 rows and 3 columns), the signal input/output pin GPIO80 of the DSP processor is connected with the automatic control button of the test water tank water pump, the signal input/output pin GPIO81 of the DSP processor is connected with the manual control button of the test water tank water pump, the signal input/output pin GPIO82 of the DSP processor is connected with the start button of the test water tank water pump, the signal input/output pin GPIO83 of the DSP processor is connected with the stop button of the test water tank water pump, the signal input/output pin GPIO84 of the DSP processor is connected with the automatic control button of the control water tank water pump, the signal input/output pin GPIO85 of the DSP processor is connected with the start button of the control water tank water pump, and the signal input/output pin GPIO87 of the DSP processor is connected with the stop button of the control water tank water pump.
6. The elevator weight test apparatus according to claim 5, wherein in the fourth step, the loading coefficient is takenpAnd the load is 30%,40%,50% and 60%, namely, the balance coefficient test and the elevator speed test are sequentially carried out on the elevator at the rated load weights of 30%,40%,50% and 60%, and then 125% of the rated load weight is loaded for speed limiter-safety gear linkage test, traction check under the downlink braking working condition, static traction check and braking test.
7. The weight test device for elevator according to claim 6, wherein in the fifth step, after the test of the elevator of the present part is finished, the water tank of the test trolley is filled with water, and no water is in the water tank of the test trolley; when the next elevator is correspondingly tested, the test trolley and the control trolley are exchanged, and the control trolley is used as the test trolley to directly conduct weight test of the next elevator.
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