Elevator loose rope detecting and weighing integrated device

Abstract

The utility model discloses an elevator loose rope detection and weighing integrated device, which comprises a switch mounting piece, a trigger piece, a microswitch, a Hall switch and fasteners, rope heads on two sides of a double rope respectively penetrate through a car cross beam to be fixed, the switch mounting piece is fixed at the tail end of the rope head on one side through the fastener, the trigger piece is fixed at the tail end of the rope head on the other side through the fastener, and the microswitch is fixed on the other side of the switch mounting piece through the fastener. The microswitch is installed on the side, close to the trigger piece, of the switch installation piece through a fastener and connected into a safety circuit of the elevator. The Hall switch is installed on the other side, away from the trigger piece, of the switch installation piece through a fastener and connected into a weighing loop of the elevator. The magnet is attracted to the bottom of the cross beam of the car frame and right faces the Hall switch on the switch installation piece. Abnormal elongation of the elevator steel wire rope is monitored and recognized through the microswitch and the trigger piece on the switch installation piece, and elevator load recognition is achieved through the Hall switch and the magnet on the switch installation piece. The device is simple in structure, low in manufacturing, machining and assembling difficulty and extremely small in occupied space.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and more specifically, to an integrated device for detecting and weighing slack ropes in elevators. Background Technology

[0002] According to Clause 5.5.5.3 of GB / T 7588.1-2020, for elevator cars suspended by two wire ropes or chains, a device capable of detecting abnormal relative elongation of the wire ropes or chains should be installed; furthermore, according to Clause 5.12.1.2.1 of the same standard, an overload detection device for the car is also required. Currently, most elevators on the market use separate structures for slack rope detection and weighing, which suffers from high material consumption, complex structure, and large space occupation, and is gradually becoming unable to meet market demands. In addition, such separate devices also have the drawback of insufficient adaptability.

[0003] In an elevator structure with a traction ratio of 2:1, the slack rope detection device and the weighing device are located at the rope ends on the car side and the counterweight side, respectively, enabling simultaneous slack rope identification and overload detection. When this separate structure is applied to an elevator with a traction ratio of 1:1, since both rope ends are located in moving parts, a signal-emitting switch or additional traveling cables on the car and counterweight sides are required to connect to the circuit. The former requires periodic charging or battery replacement, while the latter has drawbacks such as large space occupation in the shaft and high cost. However, with an integrated design, the device can be integrated into the car side and connected through the existing power supply traveling cable, effectively avoiding the above-mentioned defects. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and provide an integrated elevator slack rope detection and weighing device. The device has a simple structure, is easy to manufacture, process and assemble, and occupies very little space.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An integrated elevator slack rope detection and weighing device includes a switch mounting component, a trigger component, a micro switch, a Hall effect switch, and fasteners. The ends of the two ropes on both sides pass through the car crossbeam and are fixed. The switch mounting component is fixed to the end of one rope end by fasteners, and the trigger component is fixed to the end of the other rope end by fasteners. The micro switch is mounted on the switch mounting component near the trigger component by fasteners and is connected to the elevator's safety circuit. The Hall effect switch is mounted on the switch mounting component away from the trigger component by fasteners and is connected to the elevator's weighing circuit. A magnet is attracted to the bottom of the car crossbeam and is positioned opposite the Hall effect switch on the switch mounting component.

[0007] Furthermore, the switch mounting component has a vertical base plate, a first mounting plate and a second mounting plate that are bent and extended from the top of the vertical base plate, and a third mounting plate and a fourth mounting plate that are bent and extended from the bottom of the vertical base plate.

[0008] Furthermore, the first and third mounting plates are positioned directly opposite each other, while the second and fourth mounting plates are positioned offset from each other.

[0009] Furthermore, the first mounting plate and the second mounting plate are located on the same horizontal plane, and the third mounting plate and the fourth mounting plate are located on the same horizontal plane.

[0010] Furthermore, the micro switch is mounted on the first and third mounting plates by fasteners, and the Hall switch is mounted on the second mounting plate by fasteners.

[0011] Furthermore, the trigger has a transverse base plate, a stop plate extending downward from one side of the transverse base plate, and a fixing plate extending bent from the bottom of the stop plate.

[0012] Furthermore, the fourth mounting plate of the switch mounting component is fixed to one end of the rope head by fasteners, and the fixing plate of the trigger is fixed to the other end of the rope head by fasteners.

[0013] Furthermore, the lateral substrate is located between the first mounting plate and the third mounting plate, and the fixing plate is located between the third mounting plate and the fourth mounting plate.

[0014] Furthermore, the fixing plate is located on the same horizontal plane as the third mounting plate and the fourth mounting plate.

[0015] Furthermore, the first mounting plate, the second mounting plate, the third mounting plate, the fourth mounting plate, and the fixing plate are all provided with mounting holes.

[0016] Compared with existing technologies, this utility model of an integrated elevator slack rope detection and weighing device uses a microswitch and trigger mounted on the switch mounting component to monitor and identify abnormal relative elongation of the elevator wire rope, and uses a Hall switch mounted on the switch mounting component and a magnet on the car frame beam to identify the elevator load. This utility model device has a simple structure, is easy to manufacture and assemble, and occupies very little space, making it particularly suitable for home elevators with high requirements for shaft space utilization. Attached Figure Description

[0017] Figure 1 A three-dimensional schematic diagram of an integrated elevator rope slack detection and weighing device.

[0018] Figure 2 An exploded 3D diagram showing the elevator slack rope detection and weighing integrated device hidden behind the car frame beam.

[0019] Figure 3This is a three-dimensional structural diagram of the switch mounting component.

[0020] Figure 4 This is a three-dimensional structural diagram of the trigger element.

[0021] Explanation of icon numbers:

[0022] 1-Switch mounting component; 11-Vertical base plate; 12-First mounting plate; 13-Second mounting plate; 14-Third mounting plate; 15-Fourth mounting plate; 2-Trigger element; 21-Horizontal base plate; 22-Stop plate; 23-Fixing plate; 3-Micro switch; 4-Hall switch; 5-Fastener; 6-Car frame crossbeam; 7-Magnet. Detailed Implementation

[0023] The following description, in conjunction with the accompanying drawings and specific embodiments, further illustrates the integrated elevator slack rope detection and weighing device of this utility model.

[0024] Please see Figure 1 This utility model discloses an integrated elevator slack rope detection and weighing device, including a switch mounting component 1, a trigger component 2, a micro switch 3, a Hall switch 4, and fasteners 5. The ends of the two ropes on both sides pass through the car frame crossbeam 6 and are fixed. The switch mounting component 1 is fixed to one end of the rope by the fasteners 5, and the trigger component 2 is fixed to the other end of the rope by the fasteners 5. The micro switch 3 is mounted on the switch mounting component 1 near the trigger component 2 by the fasteners 5 and is connected to the elevator's safety circuit. The Hall switch 4 is mounted on the switch mounting component 1 away from the trigger component 2 by the fasteners 5 and is connected to the elevator's weighing circuit. A magnet 7 is attached to the bottom of the car frame crossbeam 6 and is positioned opposite the Hall switch 4 on the switch mounting component 1.

[0025] Please see Figure 1 , Figure 2 and Figure 3 The switch mounting component 1 has a vertical base plate 11, a first mounting plate 12 and a second mounting plate 13 extending from the top of the vertical base plate 11 respectively, and a third mounting plate 14 and a fourth mounting plate 15 extending from the bottom of the vertical base plate 11 respectively. The first mounting plate 12 and the third mounting plate 14 are arranged facing each other, while the second mounting plate 13 and the fourth mounting plate 15 are staggered. The first mounting plate 12 and the second mounting plate 13 are located on the same horizontal plane, and the third mounting plate 14 and the fourth mounting plate 15 are located on the same horizontal plane. A micro switch 3 is mounted on the first mounting plate 12 and the third mounting plate 14 by fasteners 5, and a Hall switch 4 is mounted on the second mounting plate 13 by fasteners 5.

[0026] Please see Figure 1 , Figure 2 and Figure 4The trigger 2 has a transverse base plate 21, a stop plate 22 extending downward from one side of the transverse base plate 21, and a fixing plate 23 extending bent from the bottom of the stop plate 22. The fourth mounting plate 15 of the switch mounting member 1 is fixed to one end of the rope head by fasteners 5, and the fixing plate 23 of the trigger 2 is fixed to the other end of the rope head by fasteners 5. The transverse base plate 21 is located between the first mounting plate 12 and the third mounting plate 14, and the fixing plate 23 is located between the third mounting plate 14 and the fourth mounting plate 15. The fixing plate 23 is on the same horizontal plane as the third mounting plate 14 and the fourth mounting plate 15.

[0027] Please see Figure 1 , Figure 3 and Figure 4 The first mounting plate 12, the second mounting plate 13, the third mounting plate 14, the fourth mounting plate 15, and the fixing plate 23 are all provided with mounting holes. Two microswitches 3 extend into the mounting holes of the first mounting plate 12 and the third mounting plate 14, respectively, and are fixed by fasteners 5. A Hall switch 4 extends into the mounting hole of the second mounting plate 13 and is fixed by fasteners 5. The ends of the double ropes on both sides extend into the mounting holes of the fourth mounting plate 15 and the fixing plate 23, respectively, and are fixed by fasteners 5.

[0028] Taking a traction double-strand steel wire rope elevator as an example, after the rope tension balance is adjusted during the installation stage, the allowable difference in tension between the two sides of the steel wire rope is set by adjusting the distance between the micro switch 3 and the trigger 2, and the allowable load of the elevator is set by adjusting the distance between the Hall switch 4 and the magnet 7.

[0029] When the elevator is in good condition, the wire rope is normal, and it is used within the rated load, the tension of the wire ropes on both sides is balanced. At this time, the trigger 2 does not contact the micro switch 3, and the elevator can operate normally.

[0030] If the elevator rope head is not properly adjusted or the wire rope exhibits abnormal elongation or slackness, the spring compression on one side of the rope head will change relative to the other side. If this exceeds the set allowable tolerance, regardless of which side of the wire rope is relatively slack, a significant height difference in the rope head springs will trigger the actuator 2, causing one of the microswitches 3 to activate. At this point, the elevator's safety circuit will be disconnected, the drive unit will stop, and the elevator will be unable to operate normally.

[0031] If the elevator rope head is properly adjusted and the wire rope is normal, but a weight exceeding the allowable load enters the car, the Hall switch 4 will be too close to the magnet 7, triggering an overload signal. The elevator will not start normally, the car will sound an alarm, and the door will remain open.

[0032] In summary, this utility model of an integrated elevator slack rope detection and weighing device uses a microswitch 3 and a trigger 2 mounted on the switch mounting component 1 to monitor and identify abnormal relative elongation of the elevator wire rope. It also uses a Hall effect switch 4 mounted on the switch mounting component 1 and a magnet 7 on the car frame beam 6 to identify the elevator load. This utility model device has a simple structure, is easy to manufacture and assemble, and occupies very little space, making it particularly suitable for home elevators where high utilization of shaft space is required.

[0033] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit disclosed in the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. An elevator rope slack detection and weighing integrated device, characterized by, The switch mounting piece, the trigger piece, the micro switch, the Hall switch and the fastener are included, the two rope heads on both sides of the double rope pass through the car beam and are fixed, the switch mounting piece is fixed to the end of one side of the rope head through the fastener, the trigger piece is fixed to the end of the other side of the rope head through the fastener, the micro switch is installed on one side of the switch mounting piece close to the trigger piece through the fastener and is connected to the safety loop of the elevator, and the Hall switch is installed on the other side of the switch mounting piece away from the trigger piece through the fastener and is connected to the weighing loop of the elevator; the magnet is adsorbed to the bottom of the car beam and is arranged opposite to the Hall switch on the switch mounting piece.

2. The elevator rope-off detection and weighing integration apparatus according to claim 1, characterized by, The switch mounting piece has a vertical base plate, a first mounting plate and a second mounting plate which are respectively bent and extended from the top of the vertical base plate, and a third mounting plate and a fourth mounting plate which are respectively bent and extended from the bottom of the vertical base plate.

3. The elevator rope-off detection and weighing integration apparatus according to claim 2, characterized by, The first mounting plate and the third mounting plate are arranged opposite to each other, and the second mounting plate and the fourth mounting plate are arranged in a staggered manner.

4. The elevator rope-off detection and weighing integration apparatus according to claim 2, characterized by, The first mounting plate and the second mounting plate are located in the same horizontal plane, and the third mounting plate and the fourth mounting plate are located in the same horizontal plane.

5. The elevator slack rope detection and weighing integration apparatus according to claim 2, characterized by, The micro switch is installed on the first mounting plate and the third mounting plate through the fastener, and the Hall switch is installed on the second mounting plate through the fastener.

6. The elevator rope slack detection and weighing integration apparatus according to claim 5, characterized by The trigger piece has a horizontal base plate, a stop plate which is extended downward from one side of the horizontal base plate, and a fixing plate which is bent and extended from the bottom of the stop plate.

7. The elevator rope-off detection and weighing integration apparatus according to claim 6, characterized by The fourth mounting plate of the switch mounting piece is fixed to the end of one side of the rope head through the fastener, and the fixing plate of the trigger piece is fixed to the end of the other side of the rope head through the fastener.

8. The elevator rope-off detection and weighing integration apparatus according to claim 6, characterized by, The horizontal base plate is located between the first mounting plate and the third mounting plate, and the fixing plate is located between the third mounting plate and the fourth mounting plate.

9. The elevator rope-off detection and weighing integration apparatus according to claim 8, characterized by The fixing plate is located in the same horizontal plane as the third mounting plate and the fourth mounting plate.

10. The elevator rope-off detection and weighing integration apparatus according to claim 6, characterized by, The first mounting plate, the second mounting plate, the third mounting plate, the fourth mounting plate and the fixing plate are all provided with mounting holes.

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