CN110092252A - A kind of hydraulic type buffer of elevator performance synthesis detection system - Google Patents
A kind of hydraulic type buffer of elevator performance synthesis detection system Download PDFInfo
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- CN110092252A CN110092252A CN201910320352.8A CN201910320352A CN110092252A CN 110092252 A CN110092252 A CN 110092252A CN 201910320352 A CN201910320352 A CN 201910320352A CN 110092252 A CN110092252 A CN 110092252A
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- cylinder body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
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Abstract
The present invention provides a kind of hydraulic type buffer of elevator performance synthesis detection systems, its buffer is cleverly combined with each other using each Hydraulic Elements and mechanical structure, buffering suitable for elevator, its failure detection assessment system is considered that the various failures or failure being likely to occur, buffer is tested and analyzed from many aspects, it is intended to quickly and accurately judge whether buffer of elevator is in normal operating conditions, in order to timely replace maintenance, elevator application risk is reduced, the reliability that elevator uses is increased.
Description
Technical field
The present invention relates to buffer of elevator design field, in particular to a kind of hydraulic type buffer of elevator performance synthesis detection
System.
Background technique
With the rapid development of national economy, skyscraper gradually increases, and the frequency of use and Distribution Breadth of elevator also exist
It gradually increases, therefore, people are also higher and higher using safe attention rate to elevator.It is fixed that national relevant laws and regulations are pointed out to need
Phase checks the parameters index of elevator, prevents from causing elevator accident because of lift facility aging or failure.Buffer is
The safety component of lift facility can play important protective effect when lift car falls or rush to summit danger.Therefore, it protects
The normal operating conditions of card buffer is very important.The repair method of previous buffer is mostly periodically artificial maintenance, maintenance
Gimmick is single and takes time and effort, and when maintenance will affect the normal operation of elevator, and can not it is accurate, quickly, timely detection it is slow
It rushes whether device is in normal working condition, increases the application risk of elevator.So in order to more accurately, quickly, timely
Detect elevator use state, need to invent a kind of buffer of elevator of included performance synthesis detection system, it is contemplated that it is various can
The failure or failure that can occur, and quickly and accurately judge whether buffer of elevator is in normal operating conditions, in order to and
When replacement maintenance, reduce elevator application risk, increase the reliability that uses of elevator.
Summary of the invention
In view of this, the main purpose of the present invention is to provide a kind of hydraulic type buffer of elevator performance synthesis detection systems
System, buffer are cleverly combined with each other using each Hydraulic Elements and mechanical structure, suitable for the buffering of elevator, failure inspection
It surveys assessment system and is considered that the various failures or failure being likely to occur, buffer is tested and analyzed from many aspects, purport
It can quickly and accurately judge whether buffer of elevator is in normal operating conditions, in order to timely replace maintenance, drop
Low elevator application risk increases the reliability that elevator uses.
The technical solution adopted by the present invention is a kind of hydraulic type buffer of elevator performance synthesis detection system, comprising:
The buffer main body support construction being made of upper backup pad, piston rod, reset spring, lower supporting plate and cylinder body, should
The upper end of piston rod is fixedly connected with upper backup pad, and lower end is located in cylinder body and forms sealing structure with cylinder body, by inner chamber of cylinder block
It is divided into epicoele and cavity of resorption, the lower supporting plate is fixed on the outside of cylinder body, and the reset spring socket on the piston rod, and resets bullet
The upper and lower ends of spring are fixedly connected with upper backup pad and lower supporting plate respectively；
The cylinder interior two sides are respectively equipped with oil liquid pipeline, which is connected to cylinder interior cavity, so that living
For stopper rod in cylinder interior telescopic moving, intracavitary oil liquid flows into cylinder body by oil liquid pipeline under the compression of piston rod under cylinder body
Epicoele；
Side is equipped with height identifier outside the cylinder body, is equipped in the height identifier and knows code tape measure and know ink recorder,
The side known code tape measure one end and be mounted on upper backup pad, the other end is crimped onto the volume of the ruler inside height identifier, described
Know ink recorder to be used to shoot the knowledge code scale for knowing code tape measure, and signal acquisition transmitter is sent to by a signal transmssion line；
The signal acquisition transmitter is used to the signal received packing is numbered, and is converted into wireless data transmission
To processing analysis module；
The processing analysis module is for analyzing the wireless data received, to determine the main body of buffer of elevator
Whether support construction is damaged.
By upper, buffer of elevator of the invention is be combined with each other, it can be achieved that under elevator by Hydraulic Elements and mechanical structure
Impulse force during falling effectively is buffered, while being acquired and being analyzed in real time by the height to main body supporting structure, from
And it can realize the real-time detection to buffer working condition, and once break down and can be instantly obtained feedback, and automatically analyze
The specific location of the reason that is out of order and syndrome buffer enables maintenance personal in time, accurately and efficiently to repair.
It is further improved, further includes an oil feeding reservoir, which is connected to the inner cavity of the cylinder body by inlet pipe；
Filter and oil-level gauge are equipped in the oil feeding reservoir, which is installed on the interface of oil feeding reservoir and inlet pipe,
For being filtered to the oil liquid for entering inner chamber of cylinder block, which is installed on the inner wall of oil feeding reservoir, for measuring oil feeding reservoir
Interior Height of oil, and it is sent to the signal acquisition transmitter.
By upper, when oil liquid pipeline retains oil liquid or leakaging cause leads to the oil liquid pressure deficiency of inner chamber of cylinder block, in cylinder body
Chamber can draw oil liquid out of oil feeding reservoir automatically by pressure difference, while oil feeding reservoir inner fluid liquid level can decline, and oil-level gauge can identify oil
Liquid height is simultaneously sent to signal acquisition transmitter, to realize the real-time acquisition to oil feeding reservoir inner fluid altitude information.
Wherein, the oil liquid pipeline of the cylinder interior side is equipped with throttle valve and the first check valve, so that cylinder body cavity of resorption
Oil liquid by the side oil liquid pipeline flow into cylinder body epicoele；It is single that the oil liquid pipeline of the cylinder interior other side is equipped with second
To valve, so that the oil liquid of cylinder body epicoele flows into cylinder body cavity of resorption by the other side oil liquid pipeline.
By upper, the contraction circuit of the oil liquid pipeline and throttle valve of cylinder body side, the first check valve group cost hydraulic structure should
First check valve plays the role of directed flow and has certain buffer function, and due to the setting of the first check valve, so that
Oil liquid can only flow to cylinder body epicoele from cylinder body cavity of resorption through shrinking circuit；The oil liquid pipeline and second one-way valve of the cylinder body other side
The stretching circuit of group cost hydraulic structure, the second one-way valve play the role of making oil liquid directed flow, and unidirectionally due to second
The setting of valve, so that oil liquid can only flow to cylinder body cavity of resorption from cylinder body epicoele through stretching out circuit.
Wherein, the inlet pipe is equipped with third check valve, guarantees that the oil liquid of oil feeding reservoir unidirectionally flows into inner chamber of cylinder block.
By upper, which can guarantee that the oil liquid of oil feeding reservoir unidirectionally flows into inner chamber of cylinder block.
It is further improved, further includes a signal transit module, which includes wireless signal receiver and letter
Number transmitter, the wireless signal receiver are used to receive the wireless data that several signal acquisition transmitters transmission come, carry out
The processing analysis module is sent to by signal projector after centralized integration.
By it is upper, it can be achieved that the detection data to multiple buffer of elevator centralized integration, and send processing analysis module into
Row analysis.
Wherein, the processing analysis module includes analyzing host and printer, what the analysis host was used to receive
Wireless integral data is analyzed and processed, and the result of analysis processing is occurred to printer to print.
By upper, analysis host can analyze the detection data of multiple buffer of elevator, and be printed by printer
Detailed failure analysis result, in order to which maintenance personal targetedly efficiently can accurately repair.
It is further improved, the level identification code further includes a decoder, for being converted to the photo for knowing ink recorder shooting
Data are sent to signal acquisition transmitter by the signal transmssion line.
By upper, data conversion can be carried out to the photo for knowing ink recorder shooting and be sent to signal acquisition transmitter, improve transmission
Rate.
Wherein, it is equipped with power supply inside the signal acquisition transmitter, for in the oil feeding reservoir and height identifier
Power supply is provided with electric device.
It, can be to provide power supply with electric device in oil feeding reservoir and height identifier by upper.
Wherein, the upper surface of the upper backup pad is adhesive with cushion.
By upper, buffer function can be played when upper backup pad and lift car contact.
Detailed description of the invention
Fig. 1 is the structure principle chart of hydraulic type buffer of elevator performance synthesis detection system provided by the invention；
Fig. 2 is oil-hydraulic cylinder internal structure chart provided by the invention；
Fig. 3 is the structure principle chart of testing agency provided by the invention.
Specific embodiment
The main purpose of the present invention is to provide a kind of hydraulic type buffer of elevator performance synthesis detection system, buffers
It is cleverly combined with each other using each Hydraulic Elements and mechanical structure, suitable for the buffering of elevator, failure detection assessment system
It is considered that the various failures or failure being likely to occur, from many aspects test and analyze buffer, it is intended to can be accurate
It quickly determines that whether buffer of elevator is in normal operating conditions, in order to timely replace maintenance, reduces elevator and use
Risk increases the reliability that elevator uses.
Structure and working principle of the invention is described in detail referring to such as FIG. 1 to FIG. 3.
As shown in Figure 1, hydraulic type buffer of elevator performance synthesis detection system provided by the invention, including hydraulic type buffering
Device and performance detection mechanism two parts composition, oil buffer are used to play buffer function in lift car decline, property
Energy detection structure carries out signal acquisition by each important composition component to oil buffer, thus to the hydraulic type buffer
Comprehensive performance is detected, and is specifically included: cushion 2, upper backup pad 3, piston rod 4, reset spring 5, lower supporting plate 6, cylinder body
7, oil feeding reservoir 8, bolt 9, bottom plate 10, oil liquid pipeline 11, throttle valve 12, the first check valve 13, second one-way valve 14, signal acquisition
Transmitter 15, third check valve 17, height identifier 18, knows code tape measure 19, fixed block 20, signal transfer at signal transmssion line 16
Module 21, wireless signal receiver 22, signal projector 23, processing analysis module 24, analysis host 25, printer 26, ruler volume
27, know ink recorder 28, decoder 29, case lid 30, stomata 31, oil-level gauge 32, oil level 33, filter 34, input duct 35；
Wherein, the upper backup pad 3, piston rod 4, reset spring 5, lower supporting plate 6 and cylinder body 7 constitute this system buffer
Main body supporting structure；
The upper backup pad 3 is used to support lift car 1, and upper surface is equipped with cushion 2, using with certain elasticity
Rubber or polyesters material can play certain buffer function when contacting with lift car 1, which passes through at high temperature
The mode and support plate 3 of reason are adhered together；
The lower surface of the upper backup pad 3 is fixedly connected with the upper end of the piston rod 4, and the lower end of the piston rod 4 is located at
In cylinder body 7, and the lower end of the piston rod 4 is just matched with the shape size of 7 inner cavity of cylinder body, and formation is in sealing contact, by cylinder body 7
Inner cavity is divided into epicoele and cavity of resorption two parts, and in addition to this, the body of rod of piston rod 4 and the contact site of 7 upper end opening of cylinder body are also done
Encapsulation process, can both meet piston rod 4 in 7 inside telescopic moving of cylinder body, ensure that the liquid inside cylinder body 7 will not pass through
It overflows the contact site of the piston rod 4 and cylinder body 7；
The lower supporting plate 6 is fixedly connected on the outside of cylinder body 7, and the reset spring 5 is socketed on piston rod 4, and point
It is not fixedly connected with upper backup pad 3 and lower supporting plate 6, under the original state of the reset spring 5, is in former long status, and piston
Bar 4 is also in fully extended state under the elastic force effect of reset spring 5, when lift car 1 declines contact upper backup pad 3
When, which can play certain buffer function, after lift car 1 leaves upper backup pad 3, utilize reset spring 5
Reverse compression power makes upper backup pad 3 and piston rod 4 return to origin-location, plays the role of reset；
The cylinder body 7 is fixedly welded on bottom plate 10, and the bottom plate 10 is fixed by bolt 9 with ground, makes single unit system
When buffering lift car 1 with certain stability；
As shown in Fig. 2, the inside of the casing wall two sides of the cylinder body 7 is respectively equipped with oil liquid pipeline 11, the oil liquid pipeline 11
Upper and lower ends are all connected with 7 inner cavity of cylinder body, when piston rod 4 is in 7 inner cavity telescopic moving of cylinder body, can make the oil liquid of 7 inner cavity of cylinder body
It is circulated along oil liquid pipeline 11；
The oil liquid pipeline 11 of 7 side of cylinder body is equipped with throttle valve 12 and the first check valve 13, organizes cost hydraulic structure
Contraction circuit, first check valve 13 plays the role of directed flow and has certain buffer function, due to first single
Setting to valve 13, so that oil liquid can only flow to the epicoele of cylinder body 7 from the cavity of resorption of cylinder body 7 through shrinking circuit；The cylinder body 7 is another
The oil liquid pipeline 11 of side is equipped with second one-way valve 14, organizes the stretching circuit of cost hydraulic structure, and the second one-way valve 14 rises
To the effect for making oil liquid directed flow, due to the setting of second one-way valve 14, so that oil liquid can only be from the epicoele of cylinder body 7 through stretching out
Circuit flows to the cavity of resorption of cylinder body 7.When lift car 1 drops, piston rod 7 can decline intracavitary under its cylinder body 7 of extruding suddenly
Oil liquid, oil liquid successively can flow to the upper intracavitary of cylinder body 7 by the first check valve 13 and throttle valve 12.The throttle valve 12 can be effective
It limits the flow velocity of oil liquid and then slows down the decrease speed of piston rod 4, to play the role of buffering.When lift car 1 gradually moves up
When leaving upper backup pad 3, upper backup pad 3 and piston rod 4 also gradually move up under the action of reset spring 5, at this moment 4 meeting of piston rod
The upper intracavitary oil liquid for squeezing cylinder body 7 makes it through second one-way valve 14 and returns to intracavitary under cylinder body 7, and piston rod 4 can be gradually
Rising is eventually returned to original position；
Oil liquid inside the cylinder body 7 is supplemented by an oil feeding reservoir 8, which passes through in input duct 35 and cylinder body
Portion's connection, and the input duct 35 is equipped with third check valve 17, it is ensured that oil liquid can only flow to inside cylinder body 7 from oil feeding reservoir 8；
As shown in figure 3, the oil feeding reservoir 8 includes case lid 30, stomata 31, oil-level gauge 32, filter 34.The oil feeding reservoir 8
It is provided with a certain amount of oil liquid, equal error is leaked due to existing, the oil liquid leakage of 7 inner cavity of cylinder body may be made, this can be weakened in this way
The buffer function of the hydraulic structure of device, so especially setting oil feeding reservoir 8, when 7 internal hydraulic pressure structure oil liquid pressure of cylinder body is insufficient
When, the oil liquid of oil liquid supplement leakage can be drawn from trend oil feeding reservoir 8.The oil feeding reservoir 8 can internally be injected by the case lid 30
Oil liquid, the oil-level gauge 32 can measure the oil liquid scale in oil feeding reservoir constantly, and be transmitted information by signal transmssion line 16
Into signal acquisition transmitter 15；The stomata 31 can keep 8 inner and outer air pressure of oil feeding reservoir consistent, be replenished in time convenient for oil liquid
Into the hydraulic structure of the present apparatus, and signal transmssion line 16 can enter oil feeding reservoir 8 by stomata 31 and be connected internally to
Oil-level gauge 32；The filter 34 can effectively play the effect of filtering oil liquid, and guarantee enters the oil liquid inside hydraulic structure not
It is impure, protect the smooth operating of hydraulic structure；
As shown in figure 3, the height identifier 18 is the main performance detection structure of this system comprising fixed block 20,
Know code tape measure 19, ruler volume 27, know ink recorder 28 and decoder 29.The fixed block 20 be set to upper backup pad 3 side, effect be by
The one end for knowing code tape measure 19 is fixed on the side of upper backup pad 3；It is described to know the tape measure that code tape measure 19 is the insighted code scale of surface band,
One end of which is fixed on the fixed block 20 of 3 side of upper backup pad, the other end is crimped onto the volume of the ruler inside height identifier 18
In 27；The knowledge ink recorder 28 is microfilming instrument, can shoot constantly and know the photo for knowing code scale on code tape measure 19 and send to
Decoder 29；The decoder 29 can will know the photo that ink recorder 28 is shot and be converted into data, and it is passed through signal transmssion line 16
It is transmitted in signal acquisition transmitter 15；
The inside of the signal acquisition transmitter 15 is equipped with fixed power source, can be in oil feeding reservoir 8 and height identifier 18
With electric device provide electric energy, in addition signal acquisition transmitter 15 oil feeding reservoir 8 and height identifier 18 can be transmitted back to come
Data automatic numbering is packaged, and is then converted into wireless signal and is launched；
The signal transmssion line 16 is reversible line, and electric energy is on the one hand transmitted to oil feeding reservoir 8 and height identifier 18,
On the other hand the data of the two are transmitted back to signal acquisition transmitter 15.
The signal transit module 21 includes wireless signal receiver 22 and signal projector 23,21 meeting of signal transit module
By wireless signal receiver 22 receive a certain range of all buffer of elevator transmission come wireless signal, after centralized integration
Processing analysis module 24 is sent to by signal projector 23 again；
The processing analysis module 24 includes analysis host 25 and printer 26, and the analysis host 25 is specific included
The remote analysis computer of reception of wireless signals ability, it can receive specific wireless signal automatically, and be analyzed, final aobvious
Failure analysis result is shown, then analysis result and corresponding buffer particular number are issued printer 26 and printed, supply dimension
The personnel of repairing repair work.Since the signal acquisition transmitter 15 of every buffer can all carry out spy when sending wireless signal
Then fixed name is being sent, so analysis host 25 can effectively show which platform buffer that specific location is specifically numbered
It breaks down, and shows failure analysis result automatically, repair maintenance personal targetedly efficiently accurately.
The working principle of this system is as follows:
In the initial state, piston rod 4 is in fully extended state, 5 state of reset spring under the action of reset spring 5
It is long for original.It contacts cushion 2 rapidly when lift car 1 falls, forces upper backup pad 3 and piston rod 4 rapid decrease together, press
Intracavitary oil liquid under contracting cylinder body 7, while reset spring 5 is compressed downwardly, cushion 2 and reset spring 5 can play at this time
Certain buffer function slows down the rapid decrease of lift car 1.Intracavitary oil liquid is squeezed unidirectional by first under cylinder body 7
Valve 13 and throttle valve 12 enter the epicoele of cylinder body 7, due to the high endurance of oil liquid and the obstruction and throttling of the first check valve 13
The current limliting of valve 12 buffers lift car 1 further, reduces decrease speed；
At the same time, height identifier 18 can effectively identify that the decrease speed of piston rod 4 and final lift car 1 are complete
The final falling head of piston rod 4 and the height after resetting, and result are passed result by signal transmssion line 16 when stablizing
It is sent in signal acquisition transmitter 15；
When lift car 1 rises, upper backup pad 3 is moved upwards due to will drive piston rod 4 by the elastic force of reset spring 5,
At this point, the upper intracavitary oil liquid of cylinder body 7 is pressurized, oil liquid can return to the cavity of resorption of cylinder body 7 by second one-way valve 14；
During the reciprocation cycle of oil liquid, if leading to the damage of oil liquid since oil liquid pipeline 11 retains oil liquid or leakaging cause
It loses, makes 7 internal oil insufficient pressure of cylinder body, then oil liquid, the oil in oil feeding reservoir 8 can be drawn inside cylinder body 7 from trend oil feeding reservoir 8
Liquid can be entered successively inside cylinder body 7 by filter 34 and third check valve 17, at the same 8 inner fluid liquid level of oil feeding reservoir can under
Drop, oil-level gauge 32 can identify at once and result are transmitted in signal acquisition transmitter 15 by signal transmssion line 16；
Signal acquisition transmitter 15 passes through the electricity consumption that 16 one side of signal transmssion line is in oil feeding reservoir 8 and height identifier 18
Electric energy needed for element provides, on the other hand both acquisitions are transmitted back to the signal come and are packaged and are named, then with wireless signal
Form be sent to signal transit module 21, signal transit module 21 can the buffer in finishing collecting certain area issue
Wireless signal re-sends to processing analysis module 24 after arranging, processing analysis module 24 can decompress the various types of signal received
And compared with routine data, to determine whether the piston rod 4, reset spring 5 or cylinder body 7 of buffer are damaged, or mend
Whether fuel tank 8 is damaged or the abnormal conditions such as oil liquid deficiency；
If the data that note abnormalities will be analyzed at once, obtain its failure exception reason and by result and buffering implement body
Position Number prints, personnel easy to repair repairing to syndrome buffer promptly and accurately.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of hydraulic type buffer of elevator performance synthesis detection system characterized by comprising
The buffer main body support construction being made of upper backup pad, piston rod, reset spring, lower supporting plate and cylinder body, the piston
The upper end of bar is fixedly connected with upper backup pad, and lower end is located in cylinder body and forms sealing structure with cylinder body, inner chamber of cylinder block is divided into
Epicoele and cavity of resorption, the lower supporting plate are fixed on the outside of cylinder body, and the reset spring is socketed on the piston rod, and reset spring
Upper and lower ends are fixedly connected with upper backup pad and lower supporting plate respectively；
The cylinder interior two sides are respectively equipped with oil liquid pipeline, which is connected to cylinder interior cavity, so that piston rod
In cylinder interior telescopic moving, intracavitary oil liquid is flowed on cylinder body under the compression of piston rod by oil liquid pipeline under cylinder body
Chamber；
Side is equipped with height identifier outside the cylinder body, is equipped in the height identifier and knows code tape measure and know ink recorder, described
Know the side that code tape measure one end is mounted on upper backup pad, the other end is crimped onto the volume of the ruler inside height identifier, the knowledge code
Machine is used to shoot the knowledge code scale for knowing code tape measure, and is sent to signal acquisition transmitter by a signal transmssion line；
The signal acquisition transmitter is used to the signal received packing is numbered, and is converted into wireless data and is sent to place
Manage analysis module；
The processing analysis module is for analyzing the wireless data received, to determine the body supports of buffer of elevator
Whether structure is damaged.
2. system according to claim 1, which is characterized in that further include an oil feeding reservoir, which passes through inlet pipe
It is connected to the inner cavity of the cylinder body；
Filter and oil-level gauge are equipped in the oil feeding reservoir, which is installed on the interface of oil feeding reservoir and inlet pipe, is used for
The oil liquid for entering inner chamber of cylinder block is filtered, which is installed on the inner wall of oil feeding reservoir, for measuring in oil feeding reservoir
Height of oil, and it is sent to the signal acquisition transmitter.
3. system according to claim 1, which is characterized in that the oil liquid pipeline of the cylinder interior side is equipped with throttling
Valve and the first check valve, so that the oil liquid of cylinder body cavity of resorption flows into cylinder body epicoele by the side oil liquid pipeline；The cylinder interior
The oil liquid pipeline of the other side is equipped with second one-way valve, so that the oil liquid of cylinder body epicoele flows into cylinder by the other side oil liquid pipeline
Body cavity of resorption.
4. system according to claim 2, which is characterized in that the inlet pipe is equipped with third check valve, guarantees to mend
The oil liquid of fuel tank unidirectionally flows into inner chamber of cylinder block.
5. system according to claim 1, which is characterized in that further include a signal transit module, the signal transit module
Comprising wireless signal receiver and signal projector, the wireless signal receiver is for receiving several signal acquisition transmitters
The wireless data that transmission comes by signal projector is sent to the processing analysis module after carrying out centralized integration.
6. system according to claim 1, which is characterized in that the processing analysis module includes analysis host and printing
Machine, the wireless integral data that the analysis host is used to receive is analyzed and processed, and the result of analysis processing is occurred
It is printed to printer.
7. system according to claim 1, which is characterized in that the level identification code further includes a decoder, and being used for will
The photo for knowing ink recorder shooting is converted to data, is sent to signal acquisition transmitter by the signal transmssion line.
8. system according to claim 2, which is characterized in that be equipped with power supply inside the signal acquisition transmitter, be used for
To provide power supply with electric device in the oil feeding reservoir and height identifier.
9. system according to claim 1, which is characterized in that the upper surface of the upper backup pad is adhesive with cushion.
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| CN201910320352.8A CN110092252A (en) | 2019-04-19 | 2019-04-19 | A kind of hydraulic type buffer of elevator performance synthesis detection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113860107A (en) * | 2021-10-20 | 2021-12-31 | 任玉珍 | Elevator buffer detecting system based on Internet of things |
| CN114212642A (en) * | 2021-12-03 | 2022-03-22 | 贵州中航电梯有限责任公司 | Device for preventing elevator from rushing to top |
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| CN113860107A (en) * | 2021-10-20 | 2021-12-31 | 任玉珍 | Elevator buffer detecting system based on Internet of things |
| CN114212642A (en) * | 2021-12-03 | 2022-03-22 | 贵州中航电梯有限责任公司 | Device for preventing elevator from rushing to top |
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