CN117755938A - elevator compensation chain safety judgment and protection device and method - Google Patents
elevator compensation chain safety judgment and protection device and method Download PDFInfo
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- CN117755938A CN117755938A CN202410196136.8A CN202410196136A CN117755938A CN 117755938 A CN117755938 A CN 117755938A CN 202410196136 A CN202410196136 A CN 202410196136A CN 117755938 A CN117755938 A CN 117755938A
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Abstract
the invention provides a safety judgment and protection device and method for an elevator compensation chain, and belongs to the technical field of elevators. Before the elevator starts, the steel wire rope passes through the compensation chain and is fixed through the termination device, the connecting plate is driven to move along the shaft by applying different forces to the electromagnet, then the steel wire rope connected to the connecting plate through the guide wheel is driven to move, the pretightening force of the steel wire rope is adjusted, after the elevator starts, the control device determines whether the state of the compensation chain is normal according to the pressure signal received by the steel wire rope fed back by the pressure sensor, and if the state of the compensation chain is abnormal, the control device transmits an abnormal signal to the elevator control system to safely control the elevator. The invention can monitor the safety state of the compensation chain in real time, and the elevator control system can control the elevator safely when the compensation chain is abnormal, thereby ensuring the operation safety of the elevator.
Description
Technical Field
The invention belongs to the technical field of elevators, and particularly relates to a safety judgment and protection device and method for an elevator compensation chain.
Background
The elevator compensation chain is suspended on the car and the counterweight at both ends, and moves up and down along with the elevator and the counterweight. The main function of the elevator compensation chain is to balance the dynamic unbalance between the elevator car and the counterweight caused by the weight change of the steel wire rope. Specifically, the compensation chain is moved by its own weight, automatically adjusted according to the position of the elevator (top or bottom) to achieve stability and safety of the elevator operation. The working principle of the elevator is that a compensation chain is arranged on the side of an elevator car, and a corresponding compensation chain is also arranged on the side of a counterweight, so that the compensation chain can correspondingly move when a steel wire rope moves to different sides along with the up-and-down movement of the elevator, thereby counteracting the influence of dynamic unbalance.
In the operation process, the compensation chain is in a shaking state, and the conditions of hooking the compensation chain with internal components of a well exist. If this occurs, this may lead to breakage of the compensation chain or failure of the compensation chain suspension, which may create a hazard. Therefore, it is important to judge the safety state of the compensation chain in time and protect the elevator when the compensation chain is unsafe.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a safety judging and protecting device and method for an elevator compensation chain, and the technical problem to be solved by the invention is how to judge the safety state of the compensation chain and protect the elevator safety operation when the state of the compensation chain is abnormal.
In order to solve the technical problems, the invention provides a safety judging and protecting device for an elevator compensation chain, which comprises a car bottom frame, a compensation chain bracket, a first fixing device, a pressure sensor, a terminating device and a control device;
The car bottom frame is fixedly arranged outside the bottom of the car; the termination device and the control device are arranged at the bottom of the car bottom frame;
the compensation chain support is fixedly connected below the car bottom frame and is spaced from the car bottom frame by a preset distance;
The steel wire rope passes through the compensation chain and is fixed through the termination device; the pressure sensor is arranged on the steel wire rope and is connected with the control device;
The first fixing device is fixed on the compensation chain support, and the compensation chain on the car side is connected to the first fixing device.
Preferably, the termination device comprises a bottom plate, an electromagnet, a connecting plate, a group of shafts and two groups of shaft seats; the electromagnet, the connecting plate, the shaft and the shaft seat are all positioned on the bottom plate; the connecting plate and the shaft are positioned between the shaft seats, the connecting plate can move along the shaft, and one end of the steel wire rope is connected with the connecting plate; the electromagnet is positioned on one side of the shaft seat, which is far away from the steel wire rope.
Preferably, the termination device further comprises a guide wheel, the guide wheel is located at the opposite side of the electromagnet, and the steel wire rope is connected with the connecting plate through the guide wheel.
Preferably, the set of shafts comprises two shafts, and the set of shaft seats comprises two shaft seats, each shaft being perpendicular to and connected between two opposite shaft seats.
preferably, a second fixing means is also included.
preferably, the first fixing device is a U-shaped bolt, a gasket is arranged between nuts of the first fixing device, and the second fixing device is a U-shaped bolt.
Preferably, one end point A of the compensation chain is connected to one U-shaped bolt, a compensation chain point B which is a preset distance away from the point A of the compensation chain is connected to the other U-shaped bolt, and a steel wire rope passes through the compensation chain point B to be connected with the terminating device.
preferably, the compensation chain is connected to the U-bolt by a hook.
Preferably, one end of the compensation chain support is connected with the car bottom frame through a first connecting device, the other end of the compensation chain support is connected with the car bottom frame through a second connecting device, and the second connecting device is aligned with the second fixing device in the vertical direction.
the invention also provides an elevator compensation chain safety judging and protecting method using the elevator compensation chain safety judging and protecting device, which comprises the following steps:
Before the elevator starts:
the steel wire rope passes through the compensation chain and is fixed by the termination device;
The pretightening force of the steel wire rope is regulated;
fixing a pressure sensor on a steel wire rope, connecting the pressure sensor with a control device, presetting a pressure value of the pressure sensor, and setting an elevator compensation chain safety judgment of the control device and an alarm value of a protection device;
After the elevator is started, during the up-and-down running of the elevator:
The control device determines whether the state of the compensation chain is normal according to the pressure signal received by the steel wire rope fed back by the pressure sensor, and if the state of the compensation chain is abnormal, the control device transmits an abnormal signal to the elevator control system to safely control the elevator.
preferably, the wire rope pretension is 50% of the force generated by the total weight of the compensation chain.
Preferably, the warning value f1=50% x the total weight of the compensation chain.
preferably, the determining whether the compensation chain state is normal or not by the control device according to the feedback signal of the pressure sensor specifically includes:
If the continuous pressure F is more than F1, judging that the compensation chain meets the resistance; the duration of the continuous pressure at this time is greater than a preset first time;
If the instantaneous pressure F is greater than F1, the counterweight-side compensation chain suspension device fails or the counterweight-side compensation chain breaks; duration of the instantaneous pressure; the duration of the instantaneous pressure at this time is less than a preset third time;
If the continuous pressure F <2% x the force generated by the total weight of the compensating chain during operation of the elevator, the car-side compensating chain suspension fails or the car-side compensating chain breaks, the duration of the continuous pressure at this time being greater than the preset second time.
preferably, the preset first time is 2s-3s, and the preset second time is 4s-5s.
Preferably, the third preset time is 0.8s-1s.
Preferably, the pressure value of the preset pressure sensor is specifically: the car is stopped at the bottom of the car, and a force of the same magnitude as the force generated by the total weight of the compensation chain is applied at the lower end of the compensation chain, at which time the wire rope length is adjusted so that the force displayed on the pressure sensor is of the magnitude of 45% of the force generated by the total weight of the compensation chain.
Preferably, after the control device judges the abnormal state of the compensation chain, the control device transmits an abnormal signal to the elevator control system, and the elevator control system can send an instruction of decelerating and stopping nearby the elevator, and then the elevator opens the door to release passengers.
Preferably, the elevator control system also displays an abc fault code corresponding to the compensation chain fault.
According to the safety judgment and protection device and method for the elevator compensation chain, before the elevator is started, the steel wire rope penetrates through the compensation chain and is fixed through the terminating device, the connecting plate is driven to move along the shaft by applying different forces to the electromagnet, the steel wire rope connected to the connecting plate through the guide wheel is further driven to move, the pretightening force of the steel wire rope is adjusted, after the elevator is started, the control device determines whether the state of the compensation chain is normal or not according to the pressure signal received by the steel wire rope fed back by the pressure sensor, and if the state of the compensation chain is abnormal, the control device transmits an abnormal signal to the elevator control system to safely control the elevator. The invention can monitor the safety state of the compensation chain in real time, and the elevator control system can control the elevator safely when the compensation chain is abnormal, thereby ensuring the operation safety of the elevator.
Drawings
fig. 1 is a schematic diagram of an elevator compensation chain safety judgment and protection device according to an embodiment of the present invention;
FIG. 2 is a sectional view in the E direction of FIG. 1;
Fig. 3 is a schematic perspective view of a termination device according to one embodiment of the present invention.
In the figure, a 1-car bottom frame; 2-counterweight; 3-compensating chain brackets; 4-compensating chains; 5-a control device; a 6-termination device; 7-a pressure sensor; 8-a steel wire rope; 9-a first fixing device; 10-a second securing means; 11-first connecting means; 12-a second connection means; 13-a gasket; 14-lifting hook; 61-an electromagnet; 62-connecting plates; 63-a guide wheel; 64-axis; 65-shaft seat.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The present invention will be described in further detail with reference to the accompanying drawings for a better understanding of the objects, structures and functions of the present invention.
Example 1
According to one embodiment of the present invention, the elevator compensation chain safety judging and protecting device of the present invention will be described in detail.
The invention provides a safety judging and protecting device of an elevator compensation chain, which comprises a car bottom frame 1, a compensation chain bracket 3, a first fixing device 9, a pressure sensor 7, a terminating device 6 and a control device 5;
the car bottom frame 1 is fixedly arranged outside the bottom of the car; the termination device 6 and the control device 5 are arranged at the bottom of the car bottom frame 1;
the compensation chain support 3 is fixedly connected below the car bottom frame 1 and is spaced from the car bottom frame 1 by a preset distance;
The wire rope 8 is fixed through the compensating chain 4 by the termination means 6; the pressure sensor 7 is arranged on the steel wire rope 8 and is connected with the control device 5;
The first fixing device 9 is fixed to the compensation chain support 3, to which the compensation chain 4 on the car side is connected.
Example 2
According to one embodiment of the present invention, the elevator compensation chain safety judging and protecting device of the present invention will be described in detail.
The invention provides a safety judging and protecting device of an elevator compensation chain, which comprises a car bottom frame 1, a compensation chain bracket 3, a first fixing device 9, a pressure sensor 7, a terminating device 6 and a control device 5;
the car bottom frame 1 is fixedly arranged outside the bottom of the car; the termination device 6 and the control device 5 are arranged at the bottom of the car bottom frame 1;
the compensation chain support 3 is fixedly connected below the car bottom frame 1 and is spaced from the car bottom frame 1 by a preset distance;
The wire rope 8 is fixed through the compensating chain 4 by the termination means 6; the pressure sensor 7 is arranged on the steel wire rope 8 and is connected with the control device 5;
The first fixing device 9 is fixed to the compensation chain support 3, to which the compensation chain 4 on the car side is connected.
Wherein the termination device 6 comprises a bottom plate, an electromagnet 61, a connecting plate 62, a group of shafts 64 and two groups of shaft seats 65; the electromagnet 61, the connecting plate 62, the shaft 64 and the shaft seat 65 are all positioned on the bottom plate; the connecting plate 62 and the shaft 64 are positioned between the shaft seats 65, the connecting plate 62 can move along the shaft 64, and one end of the steel wire rope 8 is connected with the connecting plate 62; the electromagnet 61 is located on the side of the shaft seat 65 remote from the wire rope 8.
Wherein the termination device 6 further comprises a guide wheel located opposite the electromagnet 61, through which the wire rope 8 is connected to the connection plate 62.
Example 3
according to one embodiment of the present invention, the following describes in detail the elevator compensation chain safety judgment and protection method of the present invention.
The invention provides a safety judging and protecting device of an elevator compensation chain, which comprises a car bottom frame 1, a compensation chain bracket 3,2 first fixing devices 9, a pressure sensor 7, a terminating device 6 and a control device 5;
the car bottom frame 1 is fixedly arranged outside the bottom of the car; the termination device 6 and the control device 5 are arranged at the bottom of the car bottom frame 1;
the compensation chain support 3 is fixedly connected below the car bottom frame 1 and is spaced from the car bottom frame 1 by a preset distance;
The wire rope 8 is fixed through the compensating chain 4 by the termination means 6; the pressure sensor 7 is arranged on the steel wire rope 8 and is connected with the control device 5;
The first fixing device 9 is fixed to the compensation chain support 3, to which the compensation chain 4 on the car side is connected.
wherein the termination device 6 comprises a bottom plate, an electromagnet 61, a connecting plate 62, a group of shafts 64 and two groups of shaft seats 65; the electromagnet 61, the connecting plate 62, the shaft 64 and the shaft seat 65 are all positioned on the bottom plate; the connecting plate 62 and the shaft 64 are positioned between the shaft seats 65, the connecting plate 62 can move along the shaft 64, and one end of the steel wire rope 8 is connected with the connecting plate 62; the electromagnet 61 is located on the side of the shaft seat 65 remote from the wire rope 8. The connection plate 62 moves along the shaft 64 by the electromagnet 61 to adjust the length of the wire rope 8.
Wherein the termination device 6 further comprises a guide wheel located opposite the electromagnet 61, through which the wire rope 8 is connected to the connection plate 62.
Wherein the set of shafts 64 comprises two shafts 64 and the set of shaft seats 65 comprises two shaft seats 65, each shaft 64 being perpendicular to between two opposite shaft seats 65 and being connected to the two shaft seats 65.
The first fixing device 9 is a U-shaped bolt, a gasket 13 is arranged between nuts of the first fixing device 9, and the second fixing device 10 is a U-shaped bolt.
One end A point of the compensation chain 4 is connected to one U-shaped bolt, a point B of the compensation chain 4, which is a preset distance away from the point A of the compensation chain 4, is connected to the other U-shaped bolt, and a steel wire rope 8 passes through the point B of the compensation chain 4 and is connected with the terminating device 6.
wherein the compensation chain 4 is connected to the U-bolt by means of a hook 14.
Wherein, compensation chain support 3 one end is connected with sedan-chair underframe 1 through first connecting device 11, compensation chain support 3 other end is connected with sedan-chair underframe 1 through second connecting device 12, second connecting device 12 with second fixing device 10 is in vertical alignment.
Example 4
according to one embodiment of the present invention, the following describes in detail the elevator compensation chain safety judgment and protection method of the present invention.
the invention provides an elevator compensation chain safety judging and protecting method using the elevator compensation chain safety judging and protecting device, which comprises the following steps:
Before the elevator starts:
The wire rope 8 is fixed through the compensating chain 4 by the termination device 6;
The pretightening force of the steel wire rope 8 is regulated;
the pressure sensor 7 is fixed on the steel wire rope 8 and is communicated with the control device 5, the pressure value of the pressure sensor 7 is preset, and the safety judgment of the elevator compensation chain of the control device 5 and the warning value of the protection device are set;
After the elevator is started, during the up-and-down running of the elevator:
the control device 5 determines whether the state of the compensation chain 4 is normal according to the pressure signal received by the steel wire rope 8 fed back by the pressure sensor 7, and if the state of the compensation chain 4 is abnormal, the control device 5 transmits an abnormal signal to the elevator control system to safely control the elevator.
Example 5
according to one embodiment of the present invention, the following describes in detail the elevator compensation chain safety judgment and protection method of the present invention.
the invention provides an elevator compensation chain safety judging and protecting method using the elevator compensation chain safety judging and protecting device, which comprises the following steps:
Before the elevator starts:
The wire rope 8 is fixed through the compensating chain 4 by the termination device 6;
The pretightening force of the steel wire rope 8 is regulated;
the pressure sensor 7 is fixed on the steel wire rope 8 and is communicated with the control device 5, the pressure value of the pressure sensor 7 is preset, and the safety judgment of the elevator compensation chain of the control device 5 and the warning value of the protection device are set;
After the elevator is started, during the up-and-down running of the elevator:
the control device 5 determines whether the state of the compensation chain 4 is normal according to the pressure signal received by the steel wire rope 8 fed back by the pressure sensor 7, and if the state of the compensation chain 4 is abnormal, the control device 5 transmits an abnormal signal to the elevator control system to safely control the elevator.
wherein the pre-tightening force of the wire rope 8 is 50% of the force generated by the total weight of the compensation chain 4. As the car moves up or down, the weight of the compensating chain 4 suspended from the car changes, and the pressure value on the pressure sensor 7 changes, and the maximum value is not greater than 50% by the force generated by the total weight of the compensating chain 4.
Wherein the warning value f1=50% x the total weight of the compensation chain 4.
Example 6
according to one embodiment of the present invention, the following describes in detail the elevator compensation chain safety judgment and protection method of the present invention.
the invention provides an elevator compensation chain safety judging and protecting method using the elevator compensation chain safety judging and protecting device, which comprises the following steps:
Before the elevator starts:
The wire rope 8 is fixed through the compensating chain 4 by the termination device 6;
The pretightening force of the steel wire rope 8 is regulated;
the pressure sensor 7 is fixed on the steel wire rope 8 and is communicated with the control device 5, the pressure value of the pressure sensor 7 is preset, and the safety judgment of the elevator compensation chain of the control device 5 and the warning value of the protection device are set;
After the elevator is started, during the up-and-down running of the elevator:
the control device 5 determines whether the state of the compensation chain 4 is normal according to the pressure signal received by the steel wire rope 8 fed back by the pressure sensor 7, and if the state of the compensation chain 4 is abnormal, the control device 5 transmits an abnormal signal to the elevator control system to safely control the elevator.
wherein the pre-tightening force of the wire rope 8 is 50% of the force generated by the total weight of the compensation chain 4.
Wherein the warning value f1=50% x the total weight of the compensation chain 4.
Wherein, the control device 5 determines whether the state of the compensation chain 4 is normal according to the feedback signal of the pressure sensor 7 specifically comprises:
If the continuous pressure F is greater than F1, judging that the compensation chain 4 meets resistance; the duration of the continuous pressure at this time is greater than a preset first time;
If the instantaneous pressure F > F1, the suspension device of the compensating chain 4 on the counterweight 2 side fails or the compensating chain 4 on the counterweight 2 side breaks; duration of the instantaneous pressure; the duration of the instantaneous pressure at this time is less than a preset third time;
If the continuous pressure F <2% x the force generated by the total weight of the compensating chain 4 during operation of the elevator, the suspension of the car-side compensating chain 4 fails or the car-side compensating chain 4 breaks, the duration of the continuous pressure being greater than the preset second time.
Example 7
according to one embodiment of the present invention, the following describes in detail the elevator compensation chain safety judgment and protection method of the present invention.
the invention provides an elevator compensation chain safety judging and protecting method using the elevator compensation chain safety judging and protecting device, which comprises the following steps:
Before the elevator starts:
The wire rope 8 is fixed through the compensating chain 4 by the termination device 6;
The pretightening force of the steel wire rope 8 is regulated;
the pressure sensor 7 is fixed on the steel wire rope 8 and is communicated with the control device 5, the pressure value of the pressure sensor 7 is preset, and the safety judgment of the elevator compensation chain of the control device 5 and the warning value of the protection device are set;
After the elevator is started, during the up-and-down running of the elevator:
the control device 5 determines whether the state of the compensation chain 4 is normal according to the pressure signal received by the steel wire rope 8 fed back by the pressure sensor 7, and if the state of the compensation chain 4 is abnormal, the control device 5 transmits an abnormal signal to the elevator control system to safely control the elevator.
wherein the pre-tightening force of the wire rope 8 is 50% of the force generated by the total weight of the compensation chain 4.
Wherein the warning value f1=50% x the total weight of the compensation chain 4.
Wherein, the control device 5 determines whether the state of the compensation chain 4 is normal according to the feedback signal of the pressure sensor 7 specifically comprises:
If the continuous pressure F is greater than F1, judging that the compensation chain 4 meets resistance; the duration of the continuous pressure at this time is greater than a preset first time;
If the instantaneous pressure F > F1, the suspension device of the compensating chain 4 on the counterweight 2 side fails or the compensating chain 4 on the counterweight 2 side breaks; duration of the instantaneous pressure; the duration of the instantaneous pressure at this time is less than a preset third time;
If the continuous pressure F <2% x the force generated by the total weight of the compensating chain 4 during operation of the elevator, the suspension of the car-side compensating chain 4 fails or the car-side compensating chain 4 breaks, the duration of the continuous pressure being greater than the preset second time.
Wherein, the preset first time is 2s-3s, and the preset second time is 4s-5s.
Wherein the third preset time is 0.8s-1s.
Example 8
according to one embodiment of the present invention, the following describes in detail the elevator compensation chain safety judgment and protection method of the present invention.
the invention provides an elevator compensation chain safety judging and protecting method using the elevator compensation chain safety judging and protecting device, which comprises the following steps:
Before the elevator starts:
The wire rope 8 is fixed through the compensating chain 4 by the termination device 6;
The pretightening force of the steel wire rope 8 is regulated;
the pressure sensor 7 is fixed on the steel wire rope 8 and is communicated with the control device 5, the pressure value of the pressure sensor 7 is preset, and the safety judgment of the elevator compensation chain of the control device 5 and the warning value of the protection device are set;
After the elevator is started, during the up-and-down running of the elevator:
the control device 5 determines whether the state of the compensation chain 4 is normal according to the pressure signal received by the steel wire rope 8 fed back by the pressure sensor 7, and if the state of the compensation chain 4 is abnormal, the control device 5 transmits an abnormal signal to the elevator control system to safely control the elevator.
The pressure value of the preset pressure sensor 7 is specifically: the car is stopped at the bottom of the car, and a force of the same magnitude as the force generated by the total weight of the compensating chain 4 is applied at the lower end of the compensating chain 4, whereupon the length of the wire rope 8 is adjusted so that the force displayed on the pressure sensor 7 is of the magnitude of 45% of the force generated by the total weight of the compensating chain 4. The shorter the length of the wire rope 8, the larger the pressure value on the pressure sensor 7, and vice versa.
example 9
according to one embodiment of the present invention, the following describes in detail the elevator compensation chain safety judgment and protection method of the present invention.
the invention provides an elevator compensation chain safety judging and protecting method using the elevator compensation chain safety judging and protecting device, which comprises the following steps:
Before the elevator starts:
The wire rope 8 is fixed through the compensating chain 4 by the termination device 6;
The pretightening force of the steel wire rope 8 is regulated;
the pressure sensor 7 is fixed on the steel wire rope 8 and is communicated with the control device 5, the pressure value of the pressure sensor 7 is preset, and the safety judgment of the elevator compensation chain of the control device 5 and the warning value of the protection device are set;
After the elevator is started, during the up-and-down running of the elevator:
the control device 5 determines whether the state of the compensation chain 4 is normal according to the pressure signal received by the steel wire rope 8 fed back by the pressure sensor 7, and if the state of the compensation chain 4 is abnormal, the control device 5 transmits an abnormal signal to the elevator control system to safely control the elevator.
After judging the abnormal state of the compensation chain 4, the control device 5 transmits an abnormal signal to the elevator control system, the elevator control system can send an instruction of decelerating and stopping nearby, and then the elevator opens the door to release passengers, so that the elevator is kept to be self-protected, and dangerous situations are avoided.
The elevator control system also displays an abc fault code corresponding to the compensation chain fault, so that maintenance personnel can conveniently and rapidly find the problem to carry out targeted maintenance.
Example 10
according to one embodiment of the present invention, the following describes in detail the elevator compensation chain safety judgment and protection method of the present invention.
the invention provides an elevator compensation chain safety judging and protecting method using the elevator compensation chain safety judging and protecting device, which comprises the following steps:
Before the elevator starts:
The wire rope 8 is fixed through the compensating chain 4 by the termination device 6;
The pretightening force of the steel wire rope 8 is regulated;
the pressure sensor 7 is fixed on the steel wire rope 8 and is communicated with the control device 5, the pressure value of the pressure sensor 7 is preset, and the safety judgment of the elevator compensation chain of the control device 5 and the warning value of the protection device are set;
After the elevator is started, during the up-and-down running of the elevator:
the control device 5 determines whether the state of the compensation chain 4 is normal according to the pressure signal received by the steel wire rope 8 fed back by the pressure sensor 7, and if the state of the compensation chain 4 is abnormal, the control device 5 transmits an abnormal signal to the elevator control system to safely control the elevator.
wherein the pre-tightening force of the wire rope 8 is 50% of the force generated by the total weight of the compensation chain 4.
Wherein the warning value f1=50% x the total weight of the compensation chain 4.
Wherein, the control device 5 determines whether the state of the compensation chain 4 is normal according to the feedback signal of the pressure sensor 7 specifically comprises:
If the continuous pressure F is greater than F1, judging that the compensation chain 4 meets resistance; the duration of the continuous pressure at this time is greater than a preset first time;
If the instantaneous pressure F > F1, the suspension device of the compensating chain 4 on the counterweight 2 side fails or the compensating chain 4 on the counterweight 2 side breaks; duration of the instantaneous pressure; the duration of the instantaneous pressure at this time is less than a preset third time;
If the continuous pressure F <2% x the force generated by the total weight of the compensating chain 4 during operation of the elevator, the suspension of the car-side compensating chain 4 fails or the car-side compensating chain 4 breaks, the duration of the continuous pressure being greater than the preset second time.
Wherein, the preset first time is 2s-3s, and the preset second time is 4s-5s.
Wherein the third preset time is 0.8s-1s.
The pressure value of the preset pressure sensor 7 is specifically: the car is stopped at the bottom of the car, and a force of the same magnitude as the force generated by the total weight of the compensating chain 4 is applied at the lower end of the compensating chain 4, whereupon the length of the wire rope 8 is adjusted so that the force displayed on the pressure sensor 7 is of the magnitude of 45% of the force generated by the total weight of the compensating chain 4.
After judging the abnormal state of the compensation chain 4, the control device 5 transmits an abnormal signal to the elevator control system, and the elevator control system can send an instruction of decelerating and stopping nearby, and then the elevator opens the door to release passengers.
Wherein the elevator control system also displays an abc fault code corresponding to the compensation chain fault.
the above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (18)
1. The elevator compensation chain safety judging and protecting device is characterized by comprising a car bottom frame, a compensation chain bracket, a first fixing device, a pressure sensor, a terminating device and a control device;
The car bottom frame is fixedly arranged outside the bottom of the car; the termination device and the control device are arranged at the bottom of the car bottom frame;
the compensation chain support is fixedly connected below the car bottom frame and is spaced from the car bottom frame by a preset distance;
The steel wire rope passes through the compensation chain and is fixed by the termination device; the pressure sensor is arranged on the steel wire rope and is connected with the control device;
The first fixing device is fixed on the compensation chain support, and the compensation chain on the car side is connected to the first fixing device.
2. The elevator compensation chain safety judging and protecting device of claim 1, wherein the termination device comprises a base plate, an electromagnet, a connecting plate, a set of shafts, and two sets of shaft seats; the electromagnet, the connecting plate, the shaft and the shaft seat are all positioned on the bottom plate; the connecting plate and the shaft are positioned between the shaft seats, the connecting plate can move along the shaft, and one end of the steel wire rope is connected with the connecting plate; the electromagnet is positioned on one side of the shaft seat, which is far away from the steel wire rope.
3. The elevator compensation chain safety judging and protecting device according to claim 2, wherein the termination device further comprises a guide wheel located at an opposite side of the electromagnet, the wire rope being connected to the connection plate through the guide wheel.
4. The elevator compensation chain safety judging and protecting device of claim 2, wherein the set of shafts includes two shafts, and the set of shafts includes two shafts, each shaft being perpendicular to and connected between two opposing shafts.
5. The elevator compensation chain safety judging and protecting device of claim 1, further comprising a second securing means.
6. the safety judging and protecting device for elevator compensation chain according to claim 5, wherein the first fixing device is a U-bolt, a spacer is provided between nuts of the first fixing device, and the second fixing device is a U-bolt.
7. The apparatus according to claim 6, wherein an end point a of the compensation chain is connected to one of the U-bolts, a compensation chain point B, which is a predetermined distance from the end point a of the compensation chain, is connected to the other of the U-bolts, and a wire rope is connected to the termination apparatus through the compensation chain point B.
8. The elevator compensation chain safety judging and protecting device according to claim 7, wherein the compensation chain is attached to the U-bolt by a hook.
9. The elevator compensation chain safety judging and protecting device according to claim 5, wherein one end of the compensation chain bracket is connected to the car bottom frame by a first connecting means, and the other end of the compensation chain bracket is connected to the car bottom frame by a second connecting means, the second connecting means being vertically aligned with the second fixing means.
10. elevator compensation chain safety judging and protecting method using the elevator compensation chain safety judging and protecting device according to any one of claims 1-9, characterized by comprising the steps of:
Before the elevator starts:
the steel wire rope passes through the compensation chain and is fixed by the termination device;
The pretightening force of the steel wire rope is regulated;
fixing a pressure sensor on a steel wire rope, connecting the pressure sensor with a control device, presetting a pressure value of the pressure sensor, and setting an elevator compensation chain safety judgment of the control device and an alarm value of a protection device;
After the elevator is started, during the up-and-down running of the elevator:
The control device determines whether the state of the compensation chain is normal according to the pressure signal received by the steel wire rope fed back by the pressure sensor, and if the state of the compensation chain is abnormal, the control device transmits an abnormal signal to the elevator control system to safely control the elevator.
11. The method of claim 10, wherein the rope pretension is 50% of the force generated by the total weight of the compensating chain.
12. The method for judging and protecting the safety of an elevator compensation chain according to claim 10, wherein the warning value f1=50% x the total weight of the compensation chain.
13. the elevator compensation chain safety judging and protecting method according to claim 12, wherein the control device determining whether the compensation chain state is normal based on the feedback signal of the pressure sensor comprises:
If the continuous pressure F is more than F1, judging that the compensation chain meets the resistance; the duration of the continuous pressure at this time is greater than a preset first time;
If the instantaneous pressure F is greater than F1, the counterweight-side compensation chain suspension device fails or the counterweight-side compensation chain breaks; duration of the instantaneous pressure; the duration of the instantaneous pressure at this time is less than a preset third time;
If the continuous pressure F <2% x the force generated by the total weight of the compensating chain during operation of the elevator, the car-side compensating chain suspension fails or the car-side compensating chain breaks, the duration of the continuous pressure at this time being greater than the preset second time.
14. The method of claim 13, wherein the first time is preset to be 2s-3s and the second time is preset to be 4s-5s.
15. the elevator compensation chain safety judging and protecting method according to claim 13, wherein the third preset time is 0.8s-1s.
16. the elevator compensation chain safety judging and protecting method according to claim 10, wherein the pressure value of the preset pressure sensor is specifically: the car is stopped at the bottom of the car, and a force of the same magnitude as the force generated by the total weight of the compensation chain is applied at the lower end of the compensation chain, at which time the wire rope length is adjusted so that the force displayed on the pressure sensor is of the magnitude of 45% of the force generated by the total weight of the compensation chain.
17. the method according to claim 10, wherein the control device transmits an abnormality signal to the elevator control system after judging the abnormal state of the compensation chain, the elevator control system gives an instruction to decelerate and stop nearby the elevator, and then the elevator opens the door to release the passengers.
18. the elevator compensation chain safety judging and protecting method according to claim 16, wherein the elevator control system further displays an abc fault code corresponding to the compensation chain fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410196136.8A CN117755938A (en) | 2024-02-22 | 2024-02-22 | elevator compensation chain safety judgment and protection device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410196136.8A CN117755938A (en) | 2024-02-22 | 2024-02-22 | elevator compensation chain safety judgment and protection device and method |
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| CN208071059U (en) * | 2018-04-26 | 2018-11-09 | 宋宝焱 | A kind of elevator compensation chain of automatic adjustment |
| CN109399422A (en) * | 2018-12-29 | 2019-03-01 | 江苏兴华胶带股份有限公司 | A kind of novel elevating elevator balanced compensated chain fittable slackening device |
| CN111960215A (en) * | 2020-08-20 | 2020-11-20 | 永大电梯设备（中国）有限公司 | Elevator safety compensation system |
| CN214167042U (en) * | 2020-12-22 | 2021-09-10 | 广州维亚通用实业有限公司 | Guide roller assembly for elevator |
| CN215326271U (en) * | 2021-07-10 | 2021-12-28 | 湖南快杰电梯有限公司 | Elevator compensation chain breakage safety protection structure |
| CN115339982A (en) * | 2022-08-25 | 2022-11-15 | 江苏兴华胶带股份有限公司 | Suspension device with cleaning function for elevator compensation chain |
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2024
- 2024-02-22 CN CN202410196136.8A patent/CN117755938A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208071059U (en) * | 2018-04-26 | 2018-11-09 | 宋宝焱 | A kind of elevator compensation chain of automatic adjustment |
| CN109399422A (en) * | 2018-12-29 | 2019-03-01 | 江苏兴华胶带股份有限公司 | A kind of novel elevating elevator balanced compensated chain fittable slackening device |
| CN111960215A (en) * | 2020-08-20 | 2020-11-20 | 永大电梯设备（中国）有限公司 | Elevator safety compensation system |
| CN214167042U (en) * | 2020-12-22 | 2021-09-10 | 广州维亚通用实业有限公司 | Guide roller assembly for elevator |
| CN215326271U (en) * | 2021-07-10 | 2021-12-28 | 湖南快杰电梯有限公司 | Elevator compensation chain breakage safety protection structure |
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