A rope end anti-loosening detection device for elevator traction rope

Abstract

The utility model relates to the technical field of elevators, and specifically discloses a rope end loosening prevention detection device for an elevator traction rope, a support plate fixed on a traction machine beam, a plurality of rope end assemblies are installed on the support plate, each of the rope end assemblies comprises a connecting rod, a spring and a rope end wedge, the connecting rod is slidably connected to the support plate, a trigger plate is installed on the connecting rod, a monitoring switch is installed on the support rod through a bracket, and the loosening of the rope end assembly is monitored in real time through the monitoring switch. If a certain traction rope is slack or the tension is reduced, the pressure on the spring of the rope end assembly connected thereto is reduced, and the height of the spring increases under the action of the spring force, driving the trigger plate to move upward, and when the trigger plate moves upward a distance greater than the gap reserved by the monitoring switch, the monitoring switch will be triggered, and the signal of the monitoring switch will be sent to maintenance personnel for processing through the elevator remote monitoring system, thereby improving the safety of elevator operation.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a rope end anti-loosening detection device for an elevator traction rope. Background Art

[0002] The elevator wire rope is the suspension device for the elevator car and counterweight. During the use of the elevator, the length and tension of the wire rope are always in a state of change, especially in the early stage of installation, the elongation of the wire rope changes significantly, and the elongation of the wire rope causes the tension to change. When the elongation of multiple wire ropes on the same machine is inconsistent, the tension of the wire rope will be different. The contact surface pressure between the wire rope with greater tension and the sheave (car wheel, counterweight wheel, traction wheel) is also greater than that of other wire ropes, which will cause the wear of this wire rope and the corresponding sheave groove to increase. The wire rope with greater elongation has less pressure on the corresponding sheave groove. When the tension deviation of different wire ropes exceeds the reasonable range, it will cause the car to feel uncomfortable, and the newly installed rope with less tension will be more likely to fall out of the sheave groove, thereby introducing elevator safety accidents.

[0003] At present, the more common treatment method is to increase the frequency of wire rope tension inspection at the initial stage of wire rope installation, and adjust the wire rope tension in time when it is found that the wire rope tension exceeds the deviation reference. This is a passive countermeasure. When one or several wire ropes become loose, it is not convenient to notify the maintenance personnel in time, which poses certain safety hazards. Therefore, we need to propose an elevator traction rope rope head anti-loosening detection device to solve the above-mentioned problems, so that it can effectively monitor the anti-loosening of the rope head of the traction rope in real time, and can promptly notify the maintenance personnel when the rope head becomes loose, thereby improving the safety of elevator operation. Utility Model Content

[0004] The purpose of the utility model is to provide a rope end anti-loosening detection device for an elevator traction rope, which can effectively monitor the rope end of the traction rope in real time to prevent loosening, and can promptly notify maintenance personnel when the rope end is loose, thereby improving the safety of elevator operation and solving the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rope end loosening detection device for an elevator traction rope, a support plate fixed on a traction machine beam, a plurality of rope end assemblies are installed on the support plate, each of the rope end assemblies includes a connecting rod, a spring and a rope end wedge, the connecting rod is slidably connected to the support plate, the upper end of the connecting rod passes through the support plate and is threadedly connected to a nut, the spring is sleeved on the outside of the connecting rod located at the upper end of the support plate, and the outside of the connecting rod at both ends of the spring is sleeved with a gasket, a trigger plate is fixed on the outside of the connecting rod between the gasket and the nut at the upper end, a rope end wedge connected to the traction rope is installed on the lower end of the connecting rod, and a guide mechanism for preventing the rope end wedge from rotating is provided on the traction machine beam, and a bracket is detachably fixed on the upper surface of the support plate located on one side of the spring, a monitoring switch is installed on the bracket, and the monitoring switch is located directly above the trigger plate and there is a gap between the monitoring switch and the trigger plate.

[0006] Preferably, a sliding hole for the connecting rod to pass through is opened on the support plate, and the support plate is fixed to the traction machine beam by bolts.

[0007] Preferably, the guiding mechanism comprises limit plates located on both sides of each rope head wedge, the limit plates are fixed on one side of the traction machine beam, and the distance between the two limit plates is the same as the width of the rope head wedge.

[0008] Preferably, a through hole is provided on the rope head wedge block, and a plurality of the rope head wedge blocks are connected by a steel wire rope, and the diameter of the steel wire rope matches the diameter of the through hole.

[0009] Preferably, the bracket includes a second L-shaped plate, one side of each connecting rod corresponds to a second L-shaped plate, the lower end of the second L-shaped plate is fixed to the support plate by screws, and the monitoring switch is installed on the upper end of the second L-shaped plate.

[0010] Preferably, the bracket includes a first L-shaped plate fixed at both ends of the support plate, a mounting plate is detachably installed between the two first L-shaped plates, the monitoring switch is installed on the mounting plate, and a through hole is opened on the mounting plate for the sensing head of the monitoring switch to pass through.

[0011] Preferably, a support block is fixed to the upper end of the first L-shaped plate, and both ends of the mounting plate are connected to the support block by screws.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model has a trigger plate installed on the connecting rod, and a monitoring switch installed on the supporting rod through a bracket. The loosening of the rope head assembly is monitored in real time through the monitoring switch. When the rope head assembly works normally, the traction rope is connected to the elevator car, so that the spring on the rope head assembly is in a compressed state. If a certain traction rope is relaxed or the tension is reduced, the pressure on the spring of the rope head assembly connected thereto is reduced. Under the action of the spring force, the height of the spring increases, driving the trigger plate to move upward. When the trigger plate moves upward a distance greater than the gap reserved by the monitoring switch, the monitoring switch will be triggered. The signal of the monitoring switch will be sent to the maintenance personnel through the elevator remote monitoring system for processing, thereby improving the safety of the elevator operation.

[0014] 2. The detachable connection between the bracket and the support plate of the utility model improves the convenience of installing the monitoring switch and the support plate on the traction machine beam.

[0015] 3. The utility model can ensure the direction of movement of the trigger plate by setting the guide mechanism, so that the trigger plate does not rotate with the connecting rod, and can trigger the monitoring switch, thereby improving the accuracy of the touch between the trigger plate and the monitoring switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a side view of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of Embodiment 1 of the present utility model;

[0018] Figure 3 This is a schematic diagram of the support structure of Example 1 of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the utility model in normal condition;

[0020] Figure 5 This is a schematic diagram of the structure of the utility model when one of the traction ropes is loose;

[0021] Figure 6 This is a schematic diagram of the three-dimensional structure of Embodiment 2 of the present utility model;

[0022] Figure 7 This is a schematic diagram of the bracket structure of Example 2 of the utility model.

[0023] In the figure: 1. traction machine beam; 2. support plate; 3. bracket; 31. first L-shaped plate; 32. support block; 33. mounting plate; 34. second L-shaped plate; 4. trigger plate; 5. rope head wedge; 6. traction rope; 7. limit plate; 8. wire rope; 9. spring; 10. monitoring switch; 11. gasket; 12. connecting rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] See also Figure 1-5 The utility model provides a technical solution: a rope end anti-loosening detection device for an elevator traction rope, a support plate 2 fixed on a traction machine beam 1, a plurality of rope end assemblies are installed on the support plate 2, each of the rope end assemblies includes a connecting rod 12, a spring 9 and a rope end wedge 5, the connecting rod 12 is slidably connected to the support plate 2, the upper end of the connecting rod 12 passes through the support plate 2 and is threadedly connected with a nut, the spring 9 is sleeved on the outside of the connecting rod 12 located at the upper end of the support plate 2, and the outside of the connecting rod 12 at both ends of the spring 9 is sleeved with a gasket 11, and the outside of the connecting rod 12 between the gasket 11 and the nut at the upper end is fixed with a trigger plate 4, the lower end of the connecting rod 12 is installed with a rope end wedge 5 connected to the traction rope 6, and the traction machine beam 1 is provided with a guide mechanism for preventing the rope end wedge 5 from rotating, and a bracket 3 is detachably fixed on the upper surface of the support plate 2 on one side of the spring 9, and a monitoring switch 10 is installed on the bracket 3, and the monitoring switch 10 is located just above the trigger plate 4 and there is a gap between the monitoring switch 10 and the trigger plate 4.

[0027] like Figure 4 and Figure 5 As shown, the looseness of the rope end assembly is monitored in real time through the monitoring switch 10. When the rope end assembly is working normally, the traction rope 6 is connected to the elevator car, so that the spring 9 on the rope end assembly is in a compressed state. If a certain traction rope 6 is relaxed or the tension is reduced, the pressure on the spring 9 on the rope end assembly connected thereto is reduced. Under the action of the spring 9 force, the height of the spring 9 increases, driving the trigger plate 4 to move upward. When the trigger plate 4 moves upward a distance greater than the gap reserved by the monitoring switch 10, the monitoring switch 10 will be triggered. The signal of the monitoring switch 10 will be sent to the maintenance personnel through the elevator remote monitoring system for processing, thereby improving the safety of the elevator operation.

[0028] The signal of the monitoring switch 10 can be connected to the elevator control system. When the elongation deviation of the traction rope 6 is close to the limit value, the elongation of the traction rope 6 is sent to the maintenance personnel through the remote monitoring system of the elevator. When the tension of the traction rope 6 exceeds the limit value, the situation of the traction rope 6 being out of the groove or broken may be sent. While notifying the maintenance personnel to handle it, the control system will stop the elevator operation to prevent more serious elevator accidents.

[0029] The support plate 2 is provided with a sliding hole for the connecting rod 12 to pass through. The support plate 2 is fixed to the traction machine beam 1 by bolts, so that the connecting rod 12 can slide on the support plate 2. When the traction rope 6 becomes loose or broken, the resilience of the spring 9 can be used to drive the trigger plate 4 to move upward, so that the trigger plate 4 can touch the sensor head of the monitoring switch 10 for real-time monitoring.

[0030] The guiding mechanism includes limit plates 7 located on both sides of each rope head wedge 5, and the limit plates 7 are fixed on one side of the traction machine beam 1. The distance between the two limit plates 7 is the same as the width of the rope head wedge 5, which can ensure the direction of movement of the trigger plate 4, so that the trigger plate 4 does not rotate with the connecting rod 12, and can trigger the monitoring switch 10, thereby improving the accuracy of the touch between the trigger plate 4 and the monitoring switch 10.

[0031] A through hole is provided on the rope end wedge block 5, and a plurality of the rope end wedge blocks 5 are connected by a steel wire rope 8. The diameter of the steel wire rope 8 matches the diameter of the through hole. The steel wire rope 8 is used to limit the relative rotation of the rope end wedge blocks 5, thereby reducing the twisting phenomenon of the rope end wedge blocks 5.

[0032] The bracket 3 includes a second L-shaped plate 34, and each side of the connecting rod 12 corresponds to a second L-shaped plate 34. The lower end of the second L-shaped plate 34 is fixed to the support plate 2 by screws, and the monitoring switch 10 is installed on the upper end of the second L-shaped plate 34, so that the second L-shaped plate 34 and the support plate 2 are detachably arranged, which is convenient for improving the convenience of installation between the second L-shaped plate 34 and the support plate 2. At the same time, the second L-shaped plate 34 is used to provide support force for the monitoring switch 10, thereby improving the stability of the installation of the monitoring switch 10.

[0033] Example 2

[0034] The similarities are not repeated here. The difference from Example 1 is that the bracket 3 includes a first L-shaped plate 31 fixed at both ends of the support plate 2, and a mounting plate 33 is detachably installed between the two first L-shaped plates 31. The monitoring switch 10 is installed on the mounting plate 33. The mounting plate 33 is provided with a through hole for the sensing head of the monitoring switch 10 to pass through. The first L-shaped plate 31 provides support force to the mounting plate 33, and the mounting plate 33 provides support force to the monitoring switch 10, so that the monitoring switch 10 can be installed directly above the trigger plate 4.

[0035] A support block 32 is fixed to the upper end of the first L-shaped plate 31, and both ends of the mounting plate 33 are connected to the support block 32 by screws, so that the mounting plate 33 and the first L-shaped plate 31 are detachably arranged to improve the convenience of installing the monitoring switch 10. A monitoring switch 10 or a number of monitoring switches 10 corresponding to the number of trigger plates 4 is installed on the mounting plate 33. When one monitoring switch 10 is installed, the induction head of the monitoring switch 10 needs to be connected to multiple trigger plates 4 with the help of the induction plate, so that no matter which trigger plate 4 moves upward, the monitoring switch 10 can be triggered to work.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rope end anti-loosening detection device for an elevator traction rope, characterized in that: A support plate (2) is fixed on the traction machine beam (1), and a plurality of rope head assemblies are installed on the support plate (2), each of the rope head assemblies comprises a connecting rod (12), a spring (9) and a rope head wedge (5), the connecting rod (12) is slidably connected to the support plate (2), the upper end of the connecting rod (12) passes through the support plate (2) and is threadedly connected to a nut, the spring (9) is sleeved on the outside of the connecting rod (12) located at the upper end of the support plate (2), and the connecting rods (12) at both ends of the spring (9) are sleeved on the outside with gaskets (11), and the upper end of the connecting rod (12) is connected to the supporting plate (2). A trigger plate (4) is fixed to the outside of the connecting rod (12) between the gasket (11) and the nut, a rope head wedge (5) connected to the traction rope (6) is installed at the lower end of the connecting rod (12), a guide mechanism for preventing the rope head wedge (5) from rotating is provided on the traction machine beam (1), a bracket (3) is detachably fixed to the upper surface of the support plate (2) located on one side of the spring (9), a monitoring switch (10) is installed on the bracket (3), and the monitoring switch (10) is located directly above the trigger plate (4) and there is a gap between the monitoring switch (10) and the trigger plate (4).

2. The device for detecting the loosening of the end of an elevator traction rope according to claim 1, characterized in that: The support plate (2) is provided with a sliding hole for the connecting rod (12) to pass through, and the support plate (2) is fixed to the traction machine beam (1) by bolts.

3. The device for detecting the loosening of the end of an elevator traction rope according to claim 2, characterized in that: The guide mechanism comprises limit plates (7) located on both sides of each rope head wedge (5), the limit plates (7) are fixed on one side of the traction machine beam (1), and the distance between the two limit plates (7) is the same as the width of the rope head wedge (5).

4. The device for detecting the loosening of the end of an elevator traction rope according to claim 3, characterized in that: A through hole is provided on the rope end wedge block (5), and a plurality of the rope end wedge blocks (5) are connected by a steel wire rope (8), wherein the diameter of the steel wire rope (8) matches the diameter of the through hole.

5. The device for detecting the loosening of the end of an elevator traction rope according to claim 4, characterized in that: The bracket (3) comprises a second L-shaped plate (34), one side of each connecting rod (12) corresponds to a second L-shaped plate (34), the lower end of the second L-shaped plate (34) is fixed to the support plate (2) by screws, and the monitoring switch (10) is installed on the upper end of the second L-shaped plate (34).

6. The device for detecting the loosening of the end of an elevator traction rope according to claim 3, characterized in that: The bracket (3) comprises a first L-shaped plate (31) fixed at both ends of the support plate (2); a mounting plate (33) is detachably mounted between the two first L-shaped plates (31); the monitoring switch (10) is mounted on the mounting plate (33); and a through hole is provided on the mounting plate (33) for the induction head of the monitoring switch (10) to pass through.

7. The device for detecting the loosening of the end of an elevator traction rope according to claim 6, characterized in that: A support block (32) is fixed to the upper end of the first L-shaped plate (31), and both ends of the mounting plate (33) are connected to the support block (32) via screws.

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