CN106966258A - A kind of elevator maintenance method - Google Patents

Abstract

The embodiment of the present invention discloses an elevator maintenance method, which includes the following steps: the detection wheel rolls on the surface of a single strand of the steel wire rope, and swings along with the direction of the strand, and obtains the rolling resistance value, runout value and swing value of the detection wheel ;Comparing the rolling resistance value with the preset rolling resistance value, activate different flags; when the flag is activated, take different maintenance actions according to the different activated flags. The elevator maintenance method provided by the present invention detects the wire rope through the detection wheel, and automatically lubricates or issues a fault warning according to the detection result, without manual intervention in the whole process.

Description

A kind of elevator maintenance method

technical field

The invention relates to the field of elevator design and manufacture, in particular to an elevator maintenance method.

Background technique

Elevators are essential facilities in modern buildings, and their safety and reliability are particularly important. Therefore, the law stipulates that commercial elevators require regular maintenance. In the existing elevator wire rope maintenance work, mainly rely on manual inspection. As mentioned in "Discussion on the Detection and Maintenance Measures of Steel Wire Ropes of Elevator Hoisting Machinery" ("Technology and Life", No. 14, 2011, Liao Hongru), in manual inspection, it can be divided into two categories, one is to use Tools for magnetic flux leakage testing, representative methods are (loss of cross-sectional area) LMA testing method and LF testing method. The other type is visual inspection and hand-touch inspection that does not require tools.

The above-mentioned inspection methods are sufficient to ensure that the steel wire rope is detected before large-scale accidents such as overall fracture occur. However, the above methods rely on the periodic maintenance of the elevator, and due to cost constraints, the interval of periodic maintenance will not be too short, generally 3 months. In a period of 3 months, a small defect in a wire rope can turn into a big problem. On the other hand, manual inspection depends entirely on the experience of maintenance personnel, which has a large human factor and low reliability; and some deformations are not easy to detect, which is not conducive to the early prevention and repair of minor problems.

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to provide an elevator maintenance method, which can accurately and conveniently detect the wire rope of the elevator, and automatically lubricate or issue a fault warning according to the detection result, without manual intervention in the whole process.

In order to solve the above-mentioned technical problem, the embodiment of the present invention provides a kind of elevator maintenance method, comprises the following steps:

S001. The detection wheel rolls on the surface of a single strand of the steel wire rope, and swings along the direction of the strand, and obtains the rolling resistance value, runout value and swing value of the detection wheel;

S002. Comparing the rolling resistance value with the preset rolling resistance value, when the rolling resistance value is greater than the preset rolling resistance value, it is determined that the wire rope lacks lubrication, and the A mark is activated; When the value is greater than the preset jitter value, it is judged that the front of the wire rope is broken, and the B mark is activated; when the swing value is greater than the preset swing degree, it is judged that the back of the wire rope is broken, and the C mark is activated;

S003. When the A mark is activated, send a signal to the wire rope lubricating device, and the wire rope lubricating device lubricates the wire rope; when the B mark and/or C mark are activated, send a fault signal;

Wherein, the detection wheel is located in the wire rope detection device, and the wire rope detection device also includes a detection wheel seat, a wheel seat connecting rod, a wheel seat sleeve rod, a swing seat, a reset lever and an electromagnetic push rod;

The detection wheel is arranged on the detection wheel seat, and the connecting rod of the wheel seat is fixedly connected with the top of the detection wheel seat;

The wheel seat connecting rod is sleeved on the wheel seat sleeve rod, and a return spring is arranged between them. The wheel seat sleeve rod is also provided with a first device for detecting the relative position of the wheel seat connecting rod and the wheel seat sleeve rod. position detector;

A first hinge shaft is provided on the wheel seat sleeve rod, and the first hinge shaft is hinged on the swing seat;

A second hinge shaft is arranged above the first hinge shaft on the wheel seat cover rod, and one end of the reset lever is hinged to the second hinge shaft, and the other end is hinged to the swing seat; the reset lever can follow the wheel seat sleeve The rod swings and expands, and the reset rod is provided with a second position detector for detecting the extent of its own expansion and contraction;

An electromagnetic push rod is arranged on the top of the swing seat.

As an improvement of the above solution, the wire rope lubricating device adds lubricating oil to the predetermined position of the wire rope;

Wherein, the lubricating device includes an oil pipe, an oil nozzle, an oil pump, a lubricating oil tank and a timer; the oil pipe, an oil nozzle, an oil pump, and a lubricating oil tank are connected in sequence, and the oil pump pumps the lubricating oil in the lubricating oil tank into the oil pipe via The oil nozzle flows out, the oil nozzle is located directly above the traction sheave and is set towards the wire rope, and the timer is used to control the oil pump to work for a predetermined time.

As an improvement of the above scheme, when the B mark and/or the C mark are activated, sending a fault signal refers to: when the B mark and/or the C mark are activated, send a fault signal to the elevator control module, and the elevator control module according to the activated Different flags issue different DTCs.

As an improvement of the above scheme, the specific way that the detection wheel rolls on the surface of a single strand of the steel wire rope is: the elevator steel wire rope is wound sequentially by multiple strands, and each strand is wound sequentially by multiple steel wires. The surface of the wheel is provided with grooves matching with the strands of the steel wire rope, and the grooves correspond to the strands one by one, and the strands are trapped in the grooves during the rolling process of the detection wheel.

As an improvement of the above scheme, the specific method for obtaining the rolling resistance value of the detection wheel during the rolling process of the detection wheel on the surface of a single strand of the steel wire rope is: the detection wheel rolls on the surface of the steel wire rope. The greater the swing range, the more the reset rod stretches out. At this time, the current resistance value of the wire rope can be obtained by detecting the position of the reset rod by the second position detector.

As an improvement of the above scheme, the detection wheel swings with the direction of the strands: the detection wheel tilts along with the direction of the wire rope during the rolling process of the single strand surface of the steel wire rope, so that the wheel seat connecting rod rotates at a certain angle relative to the wheel seat sleeve rod; When the surface of the steel wire rope is uneven, the detection wheel jumps up and down accordingly, and the connecting rod of the wheel seat jumps synchronously. The degree of swing in the direction of the stock.

Implementing the embodiment of the present invention has the following beneficial effects:

The elevator maintenance method of the present invention detects the wire rope through the detection wheel, and automatically lubricates or issues a fault warning according to the detection result, without manual intervention in the whole process.

Description of drawings

Fig. 1 is the overall structure schematic diagram of a kind of intermittent automatic maintenance elevator of the present invention;

Fig. 2 is a schematic structural view of the traction mechanism of the present invention;

Fig. 3 is the structural representation of steel wire rope detecting device of the present invention;

Fig. 4 is a sectional view of the steel wire rope detection device of the present invention;

Fig. 5 is a schematic view of the working state of the steel wire rope detection device of the present invention;

Fig. 6 is a working principle diagram of an intermittent automatic maintenance elevator of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It is only stated here that the words for directions such as up, down, left, right, front, back, inside, and outside that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific to the present invention. limited.

As shown in Figures 1-6, the first embodiment of the present invention provides an intermittent automatic maintenance elevator, including a shaft 1, a car 2 and a traction mechanism 3; the car 2 is set in the shaft 1, and the The traction mechanism 3 is used to pull the car 2 up and down in the hoistway 1; the traction mechanism 3 includes a wire rope 4, a traction sheave 5, a wire rope detection device 6 and a lubricating device 7; the wire rope 4 is wound on the traction sheave 5, and connected with the car 2; the wire rope detection device 6 detects the wire rope 4; when the wire rope detection device 6 detects that the wire rope 4 lacks lubricating oil, it sends a signal to the lubricating device 7, and the lubricating device 7 starts to lubricate the wire rope 4 Implement lubrication. Both the wire rope detection device 6 and the lubricating device 7 are arranged on the traction mechanism 3 of the elevator.

According to the embodiment of the present invention, the wire rope detection device 6 includes a detection wheel 61, a detection wheel seat 62, a wheel seat connecting rod 63, a wheel seat sleeve rod 64, a swing seat 65, a reset lever 66 and an electromagnetic push rod 67;

Wherein, the detection wheel 61 is arranged on the detection wheel seat 62, the wheel seat connecting rod 63 is fixedly connected with the top of the detection wheel seat 62; . The detection wheel 61 rolls on the surface of a single strand of the steel wire rope 4 and swings along the direction of the strand to obtain the rolling resistance value, run-out value and swing value of the detection wheel 61 .

The wheel seat connecting rod 63 is sleeved on the wheel seat cover rod 64, and a return spring 68 is arranged between them. The wheel seat cover rod 64 is also provided with a connecting rod for detecting the wheel seat 62 and the wheel seat cover rod 64. The relative position of the first position detector 69;

A first hinge shaft 641 is provided on the wheel seat sleeve rod 64, and the first hinge shaft 641 is hinged on the swing seat 65;

The second hinge shaft 642 is arranged above the first hinge shaft 641 on the wheel seat sleeve rod 64, one end of the reset rod 66 is hinged with the second hinge shaft 642, and the other end is hinged with the swing seat 65; The rod 66 can expand and contract with the swing of the wheel seat sleeve rod 64, and the reset rod 66 is provided with a second position detector 661 for detecting the extent of its own expansion and contraction; The larger the swing range of the rod 64 is, the more the reset rod 66 protrudes outward. At this time, the position of the reset rod 66 is detected by the second position detector 661 to obtain the current resistance value of the wire rope 4 .

The top of the swing seat 65 is provided with an electromagnetic push rod 67 . Both the first position detector 69 and the second position detector 661 can adopt existing proximity switches, and the first position detector 69 detects the relative rotation of the wheel seat 62 connecting rod and the wheel seat sleeve rod 64 at the same time, so Proximity switches and knob potentiometers can be used together.

Preferably, the lubrication device 7 includes an oil pipe 71, an oil nozzle 72, an oil pump 73, a lubricating oil tank 74 and a timer (not shown in the figure); the oil pipe 71, the oil nozzle 72, the oil pump 73, and the lubricating oil tank 74 are connected in sequence The oil pump 73 pumps the lubricating oil in the lubricating oil tank 74 into the oil pipe 71 and flows out through the oil nozzle 72. The oil nozzle 72 is located directly above the traction sheave 5 and is set towards the wire rope 4. The timer is used to control the operation of the oil pump 73 scheduled time. When the oil pipe 71 includes a main pipe and branch pipes connected to the main pipe, the branch pipes are arranged corresponding to the groups of wire ropes 4 of the traction sheave 5 , and the branch pipes are connected to the oil nozzle 72 .

According to the first embodiment of the present invention, the traction mechanism 3 further includes a linkage mechanism 31 . When the car 2 starts to stop at any floor, the linkage mechanism 31 is triggered, and the linkage mechanism 31 sends a start signal to the wire rope detection device 6 of the traction sheave 5. When the wire rope detection device 6 detects that the wire rope 4 lacks lubricating oil , a signal is sent to the lubricating device 7, and when the car 2 no longer stops and starts to move, the lubricating device 7 begins to lubricate the steel wire rope 4. Specifically, the linkage mechanism 31 includes a door signal detection module 311 and a timer 312, the door signal detection module 311 is used to obtain the door closing signal corresponding to the floor where the car 2 is located; The duration of the close signal.

Wherein, when the car 2 starts to stop at any floor, triggering the linkage mechanism 31 refers to: when the car 2 opens and then closes the door on any floor, the door signal detection module 311 sends a door signal to the timer 312. Closing signal, timer 312 starts counting, when the elevator door of any floor is opened, timing stops and clears, and when timer 312 counting time reaches predetermined value, it is judged that car 2 begins to park.

The preferred embodiment of the present invention adds a linkage mechanism 31, intelligently controls the detection frequency of the wire rope detection device 6 in a mechanized manner, and prolongs the detection interval to the greatest extent under the premise of ensuring detection reliability, so as to avoid excessive detection and cause the wire rope detection device 6 to fail. Reduced lifetime or reduced sensitivity.

Preferably, the detection wheel 61 is also provided with a damping mechanism and a damping detection mechanism, the damping mechanism is used to generate adjustable rotational resistance to the detection wheel 61, and the damping detection mechanism is used to detect the current rotational resistance of the detection wheel 61 .

More preferably, the damping mechanism is a caliper 611 connected to the detection wheel 61, and the caliper 611 adjusts the rotation damping of the detection wheel 61 by changing the clamping force on the detection wheel 61; the damping detection mechanism includes detection wheel speed detection device and clamping force detector 612. When the resistance detection value of the damping detection mechanism is greater than a predetermined value, a signal is sent to the timer, and the timer starts to control the oil pump 73 to work for a predetermined time.

It should be noted that the function of the damping mechanism is similar to that of the second position detector 661 , both are to measure the resistance of the wire rope 4 . The damping mechanism and the second position detector 661 cooperate with each other, and the detection data can be compared with each other to improve the detection reliability.

Preferably, the reset rod 66 is provided with a reset solenoid valve (not shown in the figure), and the reset solenoid valve is used to drive the reset rod 66 to return to its original length. The electromagnetic push rod 67 is provided with three preset extension positions with different extension amounts, namely initial position, quick reset position and working position.

The second embodiment of the present invention provides an elevator maintenance method, comprising the following steps:

S001, the detection wheel 61 rolls on the surface of a single strand of the steel wire rope 4, and swings along the direction of the strand, and obtains the rolling resistance value, jitter value and swing value of the detection wheel 61,

S002. Comparing the rolling resistance value with the preset rolling resistance value, when the rolling resistance value is greater than the preset rolling resistance value, it is determined that the steel wire rope 4 lacks lubrication, and the A mark is activated; When the swing degree value is greater than the preset jumping degree value, it is determined that the front strand of the steel wire rope 4 is broken, and the B mark is activated; when the swing degree value is greater than the preset swing degree value, it is determined that the steel wire rope 4 is broken at the back, and the C mark is activated;

S003. When the A mark is activated, send a signal to the lubricating device 7, and the lubricating device 7 lubricates the wire rope 4; when the B mark and/or C mark are activated, send a fault signal;

Wherein, the detection wheel 61 is located in the wire rope detection device 6, and the wire rope detection device 6 also includes a detection wheel seat 62, a wheel seat connecting rod 63, a wheel seat cover rod 64, a swing seat 65, a reset lever 66 and an electromagnetic push rod 67;

The detection wheel 61 is arranged on the detection wheel seat 62, and the wheel seat connecting rod 63 is fixedly connected with the top of the detection wheel seat 62;

The wheel seat connecting rod 63 is sleeved on the wheel seat cover rod 64, and a return spring 68 is arranged between them. The wheel seat cover rod 64 is also provided with a connecting rod for detecting the wheel seat 62 and the wheel seat cover rod 64. The relative position of the first position detector 69;

A first hinge shaft 641 is provided on the wheel seat sleeve rod 64, and the first hinge shaft 641 is hinged on the swing seat 65;

The second hinge shaft 642 is arranged above the first hinge shaft 641 on the wheel seat sleeve rod 64, one end of the reset rod 66 is hinged with the second hinge shaft 642, and the other end is hinged with the swing seat 65; The rod 66 can expand and contract with the swing of the wheel seat cover rod 64, and the reset rod 66 is provided with a second position detector 661 for detecting the extent of its own expansion and contraction;

The top of the swing seat 65 is provided with an electromagnetic push rod 67 .

Preferably, the lubricating device 7 adds lubricating oil to the predetermined position of the steel wire rope 4;

Wherein, the lubricating device 7 includes an oil pipe 71, an oil nozzle 72, an oil pump 73, a lubricating oil tank 74 and a timer; The lubricating oil in the oil tank 74 is pumped into the oil pipe 71 and flows out through the oil nozzle 72. The oil nozzle 72 is located directly above the traction sheave 5 and is set towards the wire rope 4. The timer is used to control the oil pump 73 to work for a predetermined time.

Preferably, when the B mark and/or the C mark are activated, sending out a fault signal refers to: when the B mark and/or the C mark are activated, send a fault signal to the elevator control module, and the elevator control module sends out a fault signal according to the activated different marks different fault codes.

Preferably, the specific way that the detection wheel 61 rolls on the surface of a single strand of the steel wire rope 4 is: the elevator steel wire rope 4 is sequentially wound by multiple strands, and each strand is sequentially wound by multiple steel wires. The surface of the wheel 61 is provided with a groove 613 that cooperates with the strands of the steel wire rope 4 , the grooves 613 correspond to the strands one by one, and the strands are trapped in the grooves 613 during the rolling process of the detection wheel 61 .

Preferably, the specific method for obtaining the rolling resistance value of the detection wheel 61 during the rolling process of the detection wheel 61 on the surface of a single strand of the steel wire rope 4 is: the detection wheel 61 rolls on the surface of the steel wire rope 4. When the detection wheel 61 is subjected to the greater resistance of the steel wire rope 4, The larger the swing range of the wheel seat sleeve rod 64, the more the reset rod 66 stretches out. At this moment, the position of the reset rod 66 is detected by the second position detector 661, and the resistance value of the current steel wire rope 4 can be obtained.

Preferably, the detection wheel 61 swings along the direction of the strands: the detection wheel 61 inclines with the direction of the wire rope 4 during the rolling process of the single strand surface of the steel wire rope 4, so that the wheel seat connecting rod 63 rotates relative to the wheel seat sleeve rod 64 A certain angle; when the surface of the steel wire rope 4 is not smooth, the detection wheel 61 jumps up and down accordingly, the wheel seat connecting rod 63 jumps synchronously, and the first position detector 69 detects the front and rear displacement and rotation of the wheel seat 62 connecting rod and the wheel seat sleeve rod 64 Angle, the degree of swing of the detection wheel 61 along the direction of the strand can be obtained.

Through the above detection method, the resistance, surface runout and deformation of the steel wire rope can be automatically detected, and the steel wire rope is lubricated through the lubrication device, without manual intervention in the whole process, ensuring the stable operation of the elevator, safe and reliable.

The above disclosure is only a preferred embodiment of the present invention, which certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (6)

1. A method for elevator maintenance, characterized in that, comprises the following steps: S001. The detection wheel rolls on the surface of a single strand of the steel wire rope, and swings along the direction of the strand, and obtains the rolling resistance value, runout value and swing value of the detection wheel; S002. Comparing the rolling resistance value with the preset rolling resistance value, when the rolling resistance value is greater than the preset rolling resistance value, it is determined that the wire rope lacks lubrication, and the A mark is activated; When the value is greater than the preset jitter value, it is judged that the front of the wire rope is broken, and the B mark is activated; when the swing value is greater than the preset swing degree, it is judged that the back of the wire rope is broken, and the C mark is activated; S003. When the A mark is activated, send a signal to the wire rope lubricating device, and the wire rope lubricating device lubricates the wire rope; when the B mark and/or C mark are activated, send a fault signal; Wherein, the detection wheel is located in the wire rope detection device, and the wire rope detection device also includes a detection wheel seat, a wheel seat connecting rod, a wheel seat sleeve rod, a swing seat, a reset lever and an electromagnetic push rod; The detection wheel is arranged on the detection wheel seat, and the connecting rod of the wheel seat is fixedly connected with the top of the detection wheel seat; The wheel seat connecting rod is sleeved on the wheel seat sleeve rod, and a return spring is arranged between them. The wheel seat sleeve rod is also provided with a first device for detecting the relative position of the wheel seat connecting rod and the wheel seat sleeve rod. position detector; A first hinge shaft is provided on the wheel seat sleeve rod, and the first hinge shaft is hinged on the swing seat; A second hinge shaft is arranged above the first hinge shaft on the wheel seat cover rod, and one end of the reset lever is hinged to the second hinge shaft, and the other end is hinged to the swing seat; the reset lever can follow the wheel seat sleeve The rod swings and expands, and the reset rod is provided with a second position detector for detecting the extent of its own expansion and contraction; An electromagnetic push rod is arranged on the top of the swing seat. 2. The elevator maintenance method according to claim 1, wherein the wire rope lubricating device adds lubricating oil to a predetermined position of the wire rope; Wherein, the lubricating device includes an oil pipe, an oil nozzle, an oil pump, a lubricating oil tank and a timer; the oil pipe, an oil nozzle, an oil pump, and a lubricating oil tank are connected in sequence, and the oil pump pumps the lubricating oil in the lubricating oil tank into the oil pipe via The oil nozzle flows out, the oil nozzle is located directly above the traction sheave and is set towards the wire rope, and the timer is used to control the oil pump to work for a predetermined time. 3. The elevator maintenance method according to claim 2, wherein when the B mark and/or the C mark are activated, sending a fault signal refers to: when the B mark and/or the C mark are activated, send a fault signal to the elevator control The module sends out a fault signal, and the elevator control module sends out different fault codes according to different activated flags. 4. The elevator maintenance method as claimed in claim 3, characterized in that, the specific way in which the detection wheel rolls on the surface of a single strand of the steel wire rope is: the elevator steel wire rope is wound sequentially by multiple strands, and each strand is formed by A plurality of steel wires are wound sequentially. The surface of the detection wheel is provided with grooves matching with the strands of the steel wire rope. The grooves correspond to the strands one by one, and the strands are trapped in the grooves during the rolling process of the detection wheel. 5. The elevator maintenance method as claimed in claim 4, characterized in that, the specific method for obtaining the rolling resistance value of the detection wheel during the rolling process of the detection wheel on the single strand surface of the steel wire rope is: the detection wheel rolls on the steel wire rope surface, when the detection wheel The greater the resistance of the steel wire rope, the greater the swing range of the wheel seat cover rod, and the more the reset rod stretches out. At this time, the current resistance value of the wire rope can be obtained by detecting the position of the reset rod by the second position detector. 6. The elevator maintenance method as claimed in claim 5, characterized in that, the detection wheel swings along the direction of the rope strands: the detection wheel tilts along with the direction of the wire rope during the rolling process of the detection wheel on the surface of a single strand of the wire rope, so that the wheel seat The connecting rod rotates at a certain angle relative to the wheel seat rod; when the surface of the wire rope is uneven, the detection wheel jumps up and down accordingly, and the wheel seat connecting rod jumps synchronously, and the first position detector detects the front and rear displacement of the wheel seat connecting rod and the wheel seat rod and the rotation angle, the swing degree of the detection wheel following the direction of the rope strand can be obtained.