Lifting limiting mechanism for marine elevator traveling cable
Through the lifting limit mechanism designed with a combination of fixing frame, wire rope and pulley, the problem of accompanying cable wear of marine elevators is solved, and the safety and reliability of elevator operation are improved.
Patent Information
- Application Number
- CN202422009596.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-08-19
AI Technical Summary
In the prior art, the lifting limit mechanism of the accompanying cable of marine elevators is likely to cause cable wear and affect the safety of elevator operation.
The combination design includes a fixing frame, wire rope, accompanying cable suspender, upper pulley, lower pulley and tightening mechanism. Through the cooperation of the wire rope and pulley, the accompanying cable is restricted from moving in the annular groove, reduce friction and wear, and is equipped with a failure detection device to ensure safety.
It effectively reduces the wear of cables, improves the safety and reliability of elevator operation, and prevents failures caused by wear.
Smart Images
Figure CN223175575U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of machinery, in particular to elevators, and especially to a lifting and limiting mechanism for a marine elevator's trailing cable. Background Art
[0002] A marine elevator is affected by the ship's sway, and the swaying of the elevator's trailing cable easily affects the normal operation of the elevator. Therefore, a trailing cable lifting and limiting mechanism is set to limit the up and down movement of the marine elevator's trailing cable within a fixed range to ensure the safe operation of the marine elevator. In the prior art, in the commonly used trailing cable limiting structure of a marine elevator, the trailing cable is restricted to move up and down in a steel trough, and there is a lot of friction between the cable and the trough. After long-term operation, the surface of the trailing cable will be worn, and the marine elevator will malfunction. Summary of the Invention
[0003] The purpose of the utility model is to provide a lifting and limiting mechanism for a marine elevator's trailing cable, and the lifting and limiting mechanism for the marine elevator's trailing cable is to solve the technical problem that the existing trailing cable lifting and limiting mechanism is prone to wear the cable.
[0004] A lifting and limiting mechanism for a marine elevator's trailing cable of the utility model includes two fixed frames and a trailing cable pulley. Two mutually parallel vertical steel wires are connected between the two fixed frames. Tensioning mechanisms and failure detection devices are respectively arranged between the two ends of any one steel wire and the fixed frames. Fixed plates are respectively arranged at the front and rear ends of the trailing cable pulley. The axle of the trailing cable pulley is connected to the center of the fixed plate through a bearing mechanism. Two pairs of upper pulleys are arranged on the upper part of the fixed plate, and two pairs of lower pulleys are arranged on the lower part of the fixed plate. Any one of the upper pulleys and the lower pulleys is respectively connected to the fixed plate through an axle and a bearing mechanism. Two upper pulleys in one pair of upper pulleys are respectively arranged on both sides of one steel wire, and two upper pulleys in the other pair of upper pulleys are respectively arranged on both sides of the other steel wire. Two lower pulleys in one pair of the lower pulleys are respectively arranged on both sides of one steel wire, and two lower pulleys in the other pair of lower pulleys are respectively arranged on both sides of the other steel wire. An annular groove for winding the trailing cable is arranged on the outer circumferential surface of the trailing cable pulley.
[0005] Further, a groove matching with the steel wire is arranged on the outer circumferential surface of the upper pulley and the lower pulley. The cross-section of the groove is semi-circular, and the two grooves wrap the steel wire from both sides.
[0006] Further, trailing cable retaining ropes are respectively arranged on the left and right sides of the trailing cable pulley. Both ends of any one trailing cable retaining rope are connected to the front and rear fixed plates.
[0007] Further, the tensioning mechanism includes a rope end fixing member connected to the end of the steel wire rope. The rope end fixing member extends into the fixing frame. A pressing plate is fixedly connected to the rope end fixing member. A spring is sleeved on the rope end fixing member between the pressing plate and the fixing frame. The spring biases the pressing plate towards the outside of the end of the steel wire rope.
[0008] Further, the failure detection device includes an electrical switch disposed in the fixing frame. The electrical switch is located outside the pressing plate.
[0009] Compared with the prior art, the effects of the present utility model are positive and obvious. The trailing cable pulley of the present utility model restricts the trailing cable within the annular groove. The upper pulley and the lower pulley roll along the two steel wire ropes, enabling the trailing cable pulley to move up and down along the steel wire ropes, thereby ensuring that the trailing cable moves up and down at the restricted position, reducing cable wear, and ensuring the safe operation of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 FIG. 1 is a schematic diagram of the first use state of a lifting and limiting mechanism for a trailing cable of a marine elevator according to the present utility model.
[0011] Figure 2 is Figure 1 a partially enlarged schematic diagram of FIG.
[0012] Figure 3 is Figure 1 a sectional view taken along line A-A of FIG.
[0013] Figure 4 is Figure 1 a sectional view taken along line B-B of FIG.
[0014] Figure 5 FIG. 2 is a schematic diagram of the second use state of a lifting and limiting mechanism for a trailing cable of a marine elevator according to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] The present utility model will be further described below in conjunction with embodiments. However, the present utility model is not limited to these embodiments. Any similar structures and similar changes using the present utility model should be included in the protection scope of the present utility model. The use of directions such as up, down, front, back, left, and right in the present utility model is only for the convenience of clear description and is not a limitation to the technical solution of the present utility model.
[0016] As Figures 1-5As shown in the figure, a lifting limit mechanism for a marine elevator trailing cable of the present utility model includes two fixed frames 1 and a trailing cable pulley 2. Two mutually parallel vertical steel wire ropes 3 are connected between the two fixed frames 1. A tensioning mechanism and a failure detection device are respectively arranged between the two ends of any one of the steel wire ropes 3 and the fixed frame 1. Fixed plates 15 are respectively arranged at the front and rear ends of the trailing cable pulley 2. The axle of the trailing cable pulley 2 is connected to the center of the fixed plate 15 through a bearing mechanism. Two pairs of upper pulleys 4 are arranged on the upper part of the fixed plate 15, and two pairs of lower pulleys 5 are arranged on the lower part of the fixed plate 15. Any one of the upper pulleys 4 and the lower pulleys 5 is connected to the fixed plate 15 through an axle and a bearing mechanism. The two upper pulleys 4 in one pair of upper pulleys 4 are respectively arranged on both sides of one steel wire rope 3, the two upper pulleys 4 in the other pair of upper pulleys 4 are respectively arranged on both sides of the other steel wire rope 3, the two lower pulleys 5 in one pair of the lower pulleys 5 are respectively arranged on both sides of one steel wire rope 3, and the two lower pulleys 5 in the other pair of lower pulleys 5 are respectively arranged on both sides of the other steel wire rope 3. An annular groove 6 for winding the trailing cable 14 is arranged on the outer circumferential surface of the trailing cable pulley 2.
[0017] Further, a groove 7 matching with the steel wire rope 3 is arranged on the outer circumferential surfaces of the upper pulley 4 and the lower pulley 5. The cross section of the groove 7 is semi-circular, and the two grooves 7 wrap the steel wire rope 3 from both sides.
[0018] Further, trailing cable retaining ropes 16 are respectively arranged on the left and right sides of the trailing cable pulley 2. Both ends of any one of the trailing cable retaining ropes 16 are connected to the front and rear fixed plates 15.
[0019] Further, the tensioning mechanism includes a rope end fixing member 8 connected to the end of the steel wire rope 3. The rope end fixing member 8 extends into the fixed frame 1. A pressing plate 9 is fixedly connected to the rope end fixing member 8. A spring 10 is sleeved on the rope end fixing member 8 between the pressing plate 9 and the fixed frame 1. The spring 10 biases the pressing plate 9 towards the outside of the end of the steel wire rope 3.
[0020] Further, the failure detection device includes an electrical switch 11 arranged in the fixed frame 1. The electrical switch 11 is located outside the pressing plate 9.
[0021] Specifically, the steel wire rope 3, the tensioning mechanism, the upper pulley 4, the lower pulley 5, the electrical switch 11, etc. in this embodiment all adopt well-known solutions in the prior art, which are already understood by those skilled in the art and will not be elaborated here.
[0022] The working principle of this embodiment:
[0023] During installation, the fixing bracket 1 is installed on the wire rope 3 in the hoistway. One end of the trailing cable 14 is connected to the machine room side 12, and the other end is connected to the car side 13 after passing around the annular groove 6 of the trailing cable pulley 2. During operation, the two end springs 10 tighten the wire rope 3. When the car and the trailing cable 14 rise, the trailing cable 14 lifts the trailing cable pulley 2. When the car and the trailing cable 14 descend, the trailing cable pulley 2 descends by gravity. During this process, the trailing cable pulley 2 confines the trailing cable 14 within the annular groove 6. The upper pulley 4 and the lower pulley 5 roll along the two wire ropes 3, enabling the trailing cable pulley 2 to move up and down along the wire rope 3, thereby ensuring that the trailing cable 14 moves up and down within the confined position, reducing cable wear and ensuring the safe operation of the elevator.
[0024] If one end spring 10 of the wire rope 3 fails, the other end spring 10 pushes the pressure plate 9 outward. The pressure plate 9 contacts and triggers the electrical switch 11, stopping the operation of the elevator.
Claims
1. A lifting limit mechanism for a marine elevator trailing cable, characterized in that: It includes two fixed frames and a trailing cable hanger pulley. There are two mutually parallel vertical steel wires connected between the two fixed frames. Tensioning mechanisms and failure detection devices are respectively arranged between the two ends of any one steel wire and the fixed frame. Fixed plates are respectively arranged at the front and rear ends of the trailing cable hanger pulley. The axle of the trailing cable hanger pulley is connected to the center of the fixed plate through a bearing mechanism. Two pairs of upper pulleys are arranged on the upper part of the fixed plate, and two pairs of lower pulleys are arranged on the lower part of the fixed plate. Any one of the upper and lower pulleys is respectively connected to the fixed plate through an axle and a bearing mechanism. The two upper pulleys in one pair of upper pulleys are respectively arranged on both sides of one steel wire, and the two upper pulleys in the other pair of upper pulleys are respectively arranged on both sides of the other steel wire. The two lower pulleys in one pair of the lower pulleys are respectively arranged on both sides of one steel wire, and the two lower pulleys in the other pair of lower pulleys are respectively arranged on both sides of the other steel wire. An annular groove for winding the trailing cable is arranged on the outer circumferential surface of the trailing cable hanger pulley.
2. The lifting limit mechanism for a marine elevator trailing cable according to claim 1, characterized in that: Grooves matching with the steel wire are arranged on the outer circumferential surfaces of the upper pulley and the lower pulley. The cross-section of the groove is semi-circular, and the two grooves wrap the steel wire from both sides.
3. The lifting limit mechanism for the trailing cable of a marine elevator according to claim 1, characterized in that: Trailing cable retaining ropes are respectively arranged on the left and right sides of the trailing cable hanger pulley. Both ends of any one trailing cable retaining rope are connected to the front and rear fixed plates.
4. The lifting limit mechanism for the trailing cable of a marine elevator according to claim 1, characterized in that: The tensioning mechanism includes a rope end fixing piece connected to the end of the steel wire. The rope end fixing piece extends into the fixed frame. A pressing plate is fixedly connected to the rope end fixing piece. A spring is sleeved on the rope end fixing piece between the pressing plate and the fixed frame. The spring biases the pressing plate towards the outside of the steel wire end.
5. The lifting limit mechanism for the trailing cable of a marine elevator according to claim 4, characterized in that: The failure detection device includes an electrical switch arranged in the fixed frame. The electrical switch is located outside the pressing plate.