Looseness detection device for lifting steel wire rope of residual coal bucket
By designing a wire rope relaxation detection device for lifting the slack of the wire rope by using proximity switch and induction block in real time, the equipment damage and random coiling problems caused by the slack of the wire rope in the coke oven coal hoist are solved, and the detection effect of high sensitivity and low failure rate is achieved.
Patent Information
- Application Number
- CN202421443628.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-21
AI Technical Summary
During operation, the coke oven residual coal hoist often loses stability due to the adhesion of coal powder, which may lead to wire rope breakage and equipment damage. It is difficult for the existing technology to effectively detect and prevent the problem of random coiling caused by the slack of wire rope.
A slack detection device for lifting steel wire ropes in the coal bucket is designed, including proximity switch, induction block, swing rod and fixed frame. Through the coordination of the induction block and proximity switch, the relaxation status of the wire rope is detected in real time. When the slack is detected, the power supply of the winch is immediately disconnected to prevent excessive relaxation and random rolling of the wire ropes.
It improves the sensitivity and accuracy of detection, reduces the failure rate, avoids wire rope breakage and equipment damage, and ensures the stable operation of the waste coal bucket and the normal use of the wire rope.
Smart Images
Figure CN222718912U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of coke oven auxiliary equipment, and more specifically to a residual coal hopper lifting wire rope slack detection device. Background Art
[0002] The operation of the coke oven residual coal hoist is manually operated. During operation, coal powder often sticks to the residual coal bucket and cannot be emptied cleanly, so it stays at the highest position. The operator presses the down button, but the residual coal bucket cannot fall back freely by gravity in time. When the operator fails to find it in time and continues to release the hoisting wire rope, the residual coal bucket loses the tension of the wire rope and is in an extremely unstable state. When the coal powder loosens and falls off, the residual coal bucket loses the restraint of the wire rope and suddenly falls. Due to the excessive release of the wire rope, the impact force of the residual coal bucket falling causes the wire rope to break and the equipment to be damaged.
[0003] If the limit fails after the remaining coal hopper reaches the bottom, continuing to release the winch wire rope will cause the wire rope on the drum to be released too much and coiled up. Utility Model Content
[0004] To solve the above problems, the utility model adopts the following technical solutions.
[0005] The utility model discloses a device for detecting slackness of a wire rope for hoisting a residual coal hopper, comprising a proximity switch, a sensing block, a rocker arm and a fixed frame, wherein the fixed frame comprises two columns and a column connecting plate, the column connecting plate connects the tops of the two columns, a rocker arm shaft is installed between the upper parts of the two columns, two rockers are installed on the rocker arm shaft, a steel pressure roller is installed between the lower ends of the two rockers, sensing blocks are installed on the outer sides of the tops of the two rockers, and proximity switches are respectively provided on the inner sides of the upper ends of the two columns.
[0006] Furthermore, the steel wire rope is located at the lower end of the steel pressure roller, one end of the steel wire rope is wound on the winch, the other end of the steel wire rope is passed around the steering wheel, and the fixed frame is located between the steering wheel and the winch.
[0007] Furthermore, a rocker shaft baffle is installed on the outer side of the rocker shaft of the two columns.
[0008] Furthermore, a first reinforcing connecting rod is installed between the two upright columns, and a second reinforcing connecting rod is installed between the lower ends of the two swing arms.
[0009] Furthermore, two proximity switches are connected by electric wires, wherein one proximity switch is connected to a control terminal of a rope-releasing AC contactor of a winch, and the other proximity switch is connected to a control power supply of a rope-releasing winch.
[0010] Furthermore, the steel wire rope is located between the two columns, and the bottoms of the two columns are fixed to the ground by expansion screws.
[0011] Furthermore, the proximity switch is a normally closed proximity switch.
[0012] Beneficial Effects
[0013] Compared with the prior art, the advantages of the present invention are:
[0014] The utility model has high sensitivity and accuracy. The utility model adopts a proximity switch, which is sensitive to reaction and reduces the delay of detection. The time of proximity switch action is determined by the degree of wire rope relaxation, which can be very accurate.
[0015] The utility model has a low failure rate: the utility model is equipped with two proximity switches. When the wire rope is loose, as long as one proximity switch detects a signal, the power supply of the winch can be cut off to stop the machine. The utility model has a simple structure and stable and reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a front view of an embodiment of the utility model.
[0017] Figure 2 It is a left view of an embodiment of the utility model.
[0018] Figure 3 This is a schematic diagram of the proximity switch wiring according to an embodiment of the utility model.
[0019] Figure 4 This is a diagram showing the normal state of the wire rope when the residual coal hoist is in operation according to one embodiment of the utility model.
[0020] Figure 5 This is a diagram of a residual coal hoist in a state of shutdown with its wire rope relaxed according to an embodiment of the utility model. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0022] As shown in the figure, the utility model discloses a residual coal hopper hoisting wire rope slack detection device, including a proximity switch 5, a sensing block 6, a swing rod 7 and a fixed frame 9, the fixed frame 9 includes two columns 91 and a column connecting plate 92, the column connecting plate 92 connects the tops of the two columns 91, a swing rod shaft 10 is installed between the upper parts of the two columns 91, two swing rods 7 are installed on the swing rod shaft 10, a steel pressure roller 11 is installed between the lower ends of the two swing rods 7, the top outer sides of the two swing rods 7 are both installed with a sensing block 6, and the inner sides of the upper ends of the two columns 91 are respectively provided with a proximity switch 5. The steel pressure roller is a conventional part, such as the stainless steel pressure roller mentioned in the patent with application number 2022218621707. The steel pressure roller 11 is located above the horizontal section of the wire rope 3.
[0023] The rocker 7 can rotate around the rocker axis 10 .
[0024] In one embodiment of the utility model, the wire rope 3 is located at the lower end of the steel pressure roller 11, one end of the wire rope 3 is wound on the winch 4, the other end of the wire rope 3 bypasses the steering wheel 1, and the fixed frame 9 is located between the steering wheel 1 and the winch 4.
[0025] In one embodiment of the utility model, a swing rod shaft baffle plate 2 is installed on the outer side of the two columns 91 where the swing rod shaft 10 is installed. The swing rod shaft baffle plate 2 prevents the swing rod shaft 10 from moving, ensuring that the rotation trajectory of the swing rod 7 is stable.
[0026] In an embodiment of the utility model, a reinforcing link 12 is installed between the two uprights 91, and the reinforcing link 12 plays a reinforcing role. A reinforcing link 2 13 is installed between the lower ends of the two swing rods 7. The reinforcing link 2 13 plays a role in keeping the two swing rods 7 stable, and the two swing rods 7 can move synchronously.
[0027] In one embodiment of the present invention, Figure 3 , two proximity switches 5 are connected by wires, one proximity switch 5 is connected to the winch rope release AC contactor control terminal 14, and the other proximity switch 5 is connected to the winch rope release control power supply 15. The winch rope release AC contactor control terminal 14 and the winch rope release control power supply 15 in the figure are both schematic, and the appearance is not the shape in the figure.
[0028] In an embodiment of the present invention, the steel wire rope 3 is located between two columns 91, and the bottoms of the two columns 91 are fixed to the ground by expansion screws.
[0029] In an embodiment of the present invention, the proximity switch 5 is a normally closed proximity switch.
[0030] When the residual coal hoist operates normally, the wire rope 3 is straightened by force, the steel pressure roller 11 is lifted, driving the swing rod 7 to rotate counterclockwise, the distance between the induction block 6 and the proximity switch 5 cannot trigger the proximity switch action, and the winch power supply is normal.
[0031] When the wire rope 3 becomes loose during the downward movement of the residual coal hoist, the steel pressure roller 11 drives the rocker arm 7 to rotate clockwise as the wire rope 3 falls, and the distance between the induction block 6 and the proximity switch 5 becomes smaller and smaller. When it is small enough to trigger the proximity switch, the winch rope release control power supply 15 is instantly disconnected, the winch is immediately powered off and stopped, and the residual coal bucket hoisting wire rope stops in a slightly loose state to prevent the bucket from falling or the rope from being tangled.
[0032] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.
Claims
1. A device for detecting slackness of the steel wire rope for hoisting the residual coal hopper, characterized in that: It includes a proximity switch, a sensing block, a rocker arm and a fixed frame. The fixed frame includes two columns and a column connecting plate. The column connecting plate connects the tops of the two columns. A rocker arm shaft is installed between the upper parts of the two columns. Two rockers are installed on the rocker arm shaft. A steel pressure roller is installed between the lower ends of the two rockers. Sensing blocks are installed on the outer sides of the tops of the two rockers. Proximity switches are respectively provided on the inner sides of the upper ends of the two columns.
2. The residual coal hopper hoisting wire rope slack detection device according to claim 1 is characterized in that: The steel wire rope is located at the lower end of the steel pressure roller, one end of the steel wire rope is wound on the winch, and the other end of the steel wire rope is passed around the steering wheel, and the fixed frame is located between the steering wheel and the winch.
3. The residual coal hopper hoisting wire rope slack detection device according to claim 1 is characterized in that: A rocker shaft baffle is installed on the outer side of the rocker shaft of the two columns.
4. The residual coal hopper hoisting wire rope slack detection device according to claim 1 is characterized in that: A first reinforcing connecting rod is installed between the two upright columns, and a second reinforcing connecting rod is installed between the lower ends of the two swing arms.
5. The residual coal hopper hoisting wire rope slack detection device according to claim 1 is characterized in that: The two proximity switches are connected through electric wires, one of which is connected to the control terminal of the winch rope-releasing AC contactor, and the other is connected to the winch rope-releasing control power supply.
6. The residual coal hopper hoisting wire rope slack detection device according to claim 2 is characterized in that: The wire rope is located between the two columns, and the bottoms of the two columns are fixed to the ground by expansion screws.
7. The residual coal hopper hoisting wire rope slack detection device according to claim 1 is characterized in that: The proximity switch is a normally closed proximity switch.